./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/locks/test_locks_15-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b 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_03d394c0-6ebe-4070-802b-4e81c3bbb699/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d394c0-6ebe-4070-802b-4e81c3bbb699/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d394c0-6ebe-4070-802b-4e81c3bbb699/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d394c0-6ebe-4070-802b-4e81c3bbb699/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/locks/test_locks_15-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d394c0-6ebe-4070-802b-4e81c3bbb699/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d394c0-6ebe-4070-802b-4e81c3bbb699/bin/uautomizer-ug76WZFUDN --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 ad13fcacd201ae20f6800b42387b8ec1153fb1bf63cee7a12ec23f4a302be7c7 --- 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-6b4ec56 [2022-11-20 09:27:07,772 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 09:27:07,775 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 09:27:07,819 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 09:27:07,819 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 09:27:07,824 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 09:27:07,827 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 09:27:07,830 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 09:27:07,832 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 09:27:07,838 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 09:27:07,840 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 09:27:07,842 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 09:27:07,843 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 09:27:07,846 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 09:27:07,848 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 09:27:07,852 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 09:27:07,854 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 09:27:07,855 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 09:27:07,857 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 09:27:07,864 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 09:27:07,865 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 09:27:07,868 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 09:27:07,869 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 09:27:07,870 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 09:27:07,883 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 09:27:07,885 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 09:27:07,885 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 09:27:07,887 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 09:27:07,888 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 09:27:07,889 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 09:27:07,890 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 09:27:07,891 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 09:27:07,893 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 09:27:07,895 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 09:27:07,897 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 09:27:07,897 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 09:27:07,898 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 09:27:07,898 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 09:27:07,899 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 09:27:07,900 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 09:27:07,901 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 09:27:07,902 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d394c0-6ebe-4070-802b-4e81c3bbb699/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 09:27:07,943 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 09:27:07,943 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 09:27:07,944 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 09:27:07,945 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 09:27:07,946 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 09:27:07,946 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 09:27:07,959 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 09:27:07,960 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 09:27:07,960 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 09:27:07,961 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 09:27:07,962 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 09:27:07,962 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 09:27:07,962 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 09:27:07,963 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 09:27:07,963 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 09:27:07,963 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 09:27:07,963 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 09:27:07,964 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 09:27:07,964 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 09:27:07,964 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 09:27:07,965 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 09:27:07,965 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 09:27:07,965 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 09:27:07,966 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 09:27:07,966 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:27:07,966 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 09:27:07,967 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 09:27:07,967 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 09:27:07,968 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 09:27:07,968 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 09:27:07,968 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 09:27:07,969 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 09:27:07,969 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 09:27:07,969 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d394c0-6ebe-4070-802b-4e81c3bbb699/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d394c0-6ebe-4070-802b-4e81c3bbb699/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ad13fcacd201ae20f6800b42387b8ec1153fb1bf63cee7a12ec23f4a302be7c7 [2022-11-20 09:27:08,312 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 09:27:08,350 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 09:27:08,353 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 09:27:08,354 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 09:27:08,355 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 09:27:08,356 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d394c0-6ebe-4070-802b-4e81c3bbb699/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/locks/test_locks_15-2.c [2022-11-20 09:27:11,508 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 09:27:11,756 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 09:27:11,759 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d394c0-6ebe-4070-802b-4e81c3bbb699/sv-benchmarks/c/locks/test_locks_15-2.c [2022-11-20 09:27:11,769 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d394c0-6ebe-4070-802b-4e81c3bbb699/bin/uautomizer-ug76WZFUDN/data/5b03a1209/dc138e9517a347d98a466ffdfdadc2bb/FLAG12ccc9731 [2022-11-20 09:27:11,787 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d394c0-6ebe-4070-802b-4e81c3bbb699/bin/uautomizer-ug76WZFUDN/data/5b03a1209/dc138e9517a347d98a466ffdfdadc2bb [2022-11-20 09:27:11,790 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 09:27:11,792 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 09:27:11,795 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 09:27:11,796 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 09:27:11,800 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 09:27:11,801 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:27:11" (1/1) ... [2022-11-20 09:27:11,802 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@446a4ea8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:11, skipping insertion in model container [2022-11-20 09:27:11,802 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:27:11" (1/1) ... [2022-11-20 09:27:11,810 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 09:27:11,838 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 09:27:12,014 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_03d394c0-6ebe-4070-802b-4e81c3bbb699/sv-benchmarks/c/locks/test_locks_15-2.c[5628,5641] [2022-11-20 09:27:12,019 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:27:12,030 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 09:27:12,059 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_03d394c0-6ebe-4070-802b-4e81c3bbb699/sv-benchmarks/c/locks/test_locks_15-2.c[5628,5641] [2022-11-20 09:27:12,060 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:27:12,074 INFO L208 MainTranslator]: Completed translation [2022-11-20 09:27:12,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:12 WrapperNode [2022-11-20 09:27:12,075 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 09:27:12,076 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 09:27:12,076 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 09:27:12,077 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 09:27:12,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:12" (1/1) ... [2022-11-20 09:27:12,106 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:12" (1/1) ... [2022-11-20 09:27:12,138 INFO L138 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 193 [2022-11-20 09:27:12,143 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 09:27:12,144 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 09:27:12,144 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 09:27:12,144 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 09:27:12,155 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:12" (1/1) ... [2022-11-20 09:27:12,155 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:12" (1/1) ... [2022-11-20 09:27:12,166 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:12" (1/1) ... [2022-11-20 09:27:12,168 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:12" (1/1) ... [2022-11-20 09:27:12,176 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:12" (1/1) ... [2022-11-20 09:27:12,192 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:12" (1/1) ... [2022-11-20 09:27:12,193 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:12" (1/1) ... [2022-11-20 09:27:12,194 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:12" (1/1) ... [2022-11-20 09:27:12,203 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 09:27:12,204 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 09:27:12,204 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 09:27:12,204 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 09:27:12,205 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:12" (1/1) ... [2022-11-20 09:27:12,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:27:12,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d394c0-6ebe-4070-802b-4e81c3bbb699/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:12,239 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d394c0-6ebe-4070-802b-4e81c3bbb699/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 09:27:12,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03d394c0-6ebe-4070-802b-4e81c3bbb699/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 09:27:12,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 09:27:12,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 09:27:12,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 09:27:12,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 09:27:12,408 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 09:27:12,410 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 09:27:12,796 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 09:27:12,818 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 09:27:12,818 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 09:27:12,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:27:12 BoogieIcfgContainer [2022-11-20 09:27:12,820 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 09:27:12,823 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 09:27:12,823 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 09:27:12,827 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 09:27:12,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:27:11" (1/3) ... [2022-11-20 09:27:12,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19537da5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:27:12, skipping insertion in model container [2022-11-20 09:27:12,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:12" (2/3) ... [2022-11-20 09:27:12,831 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19537da5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:27:12, skipping insertion in model container [2022-11-20 09:27:12,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:27:12" (3/3) ... [2022-11-20 09:27:12,844 INFO L112 eAbstractionObserver]: Analyzing ICFG test_locks_15-2.c [2022-11-20 09:27:12,865 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 09:27:12,866 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 09:27:12,946 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 09:27:12,955 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;@2c448290, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 09:27:12,956 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 09:27:12,961 INFO L276 IsEmpty]: Start isEmpty. Operand has 55 states, 53 states have (on average 1.9245283018867925) internal successors, (102), 54 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:12,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-20 09:27:12,969 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:12,970 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] [2022-11-20 09:27:12,971 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:12,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:12,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1188560455, now seen corresponding path program 1 times [2022-11-20 09:27:12,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:12,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830008759] [2022-11-20 09:27:12,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:12,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:13,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:13,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:13,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:13,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830008759] [2022-11-20 09:27:13,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830008759] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:13,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:13,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:27:13,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560877863] [2022-11-20 09:27:13,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:13,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:27:13,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:13,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:27:13,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:27:13,375 INFO L87 Difference]: Start difference. First operand has 55 states, 53 states have (on average 1.9245283018867925) internal successors, (102), 54 states have internal predecessors, (102), 0 states have call successors, (0), 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 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:13,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:13,460 INFO L93 Difference]: Finished difference Result 113 states and 205 transitions. [2022-11-20 09:27:13,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:27:13,465 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2022-11-20 09:27:13,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:13,476 INFO L225 Difference]: With dead ends: 113 [2022-11-20 09:27:13,476 INFO L226 Difference]: Without dead ends: 99 [2022-11-20 09:27:13,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:27:13,483 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 77 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:13,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 199 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:27:13,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-11-20 09:27:13,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 67. [2022-11-20 09:27:13,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.9090909090909092) internal successors, (126), 66 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:13,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 126 transitions. [2022-11-20 09:27:13,558 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 126 transitions. Word has length 22 [2022-11-20 09:27:13,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:13,559 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 126 transitions. [2022-11-20 09:27:13,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:13,560 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 126 transitions. [2022-11-20 09:27:13,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-20 09:27:13,561 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:13,561 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] [2022-11-20 09:27:13,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 09:27:13,562 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:13,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:13,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1112262135, now seen corresponding path program 1 times [2022-11-20 09:27:13,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:13,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699106647] [2022-11-20 09:27:13,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:13,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:13,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:13,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:13,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:13,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699106647] [2022-11-20 09:27:13,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699106647] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:13,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:13,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:27:13,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444512085] [2022-11-20 09:27:13,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:13,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:27:13,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:13,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:27:13,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:27:13,682 INFO L87 Difference]: Start difference. First operand 67 states and 126 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:13,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:13,722 INFO L93 Difference]: Finished difference Result 164 states and 309 transitions. [2022-11-20 09:27:13,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:27:13,723 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2022-11-20 09:27:13,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:13,725 INFO L225 Difference]: With dead ends: 164 [2022-11-20 09:27:13,725 INFO L226 Difference]: Without dead ends: 99 [2022-11-20 09:27:13,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:27:13,728 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 73 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:13,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 213 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:27:13,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-11-20 09:27:13,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 97. [2022-11-20 09:27:13,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.8958333333333333) internal successors, (182), 96 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) [2022-11-20 09:27:13,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 182 transitions. [2022-11-20 09:27:13,742 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 182 transitions. Word has length 22 [2022-11-20 09:27:13,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:13,743 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 182 transitions. [2022-11-20 09:27:13,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:13,743 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 182 transitions. [2022-11-20 09:27:13,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-20 09:27:13,744 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:13,745 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] [2022-11-20 09:27:13,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 09:27:13,745 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:13,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:13,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1809543287, now seen corresponding path program 1 times [2022-11-20 09:27:13,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:13,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435195612] [2022-11-20 09:27:13,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:13,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:13,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:13,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:13,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:13,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435195612] [2022-11-20 09:27:13,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435195612] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:13,833 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:13,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:27:13,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34753723] [2022-11-20 09:27:13,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:13,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:27:13,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:13,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:27:13,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:27:13,836 INFO L87 Difference]: Start difference. First operand 97 states and 182 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:13,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:13,885 INFO L93 Difference]: Finished difference Result 150 states and 276 transitions. [2022-11-20 09:27:13,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:27:13,886 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2022-11-20 09:27:13,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:13,887 INFO L225 Difference]: With dead ends: 150 [2022-11-20 09:27:13,893 INFO L226 Difference]: Without dead ends: 102 [2022-11-20 09:27:13,893 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 [2022-11-20 09:27:13,895 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 75 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:13,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 240 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:27:13,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-11-20 09:27:13,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 100. [2022-11-20 09:27:13,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.8585858585858586) internal successors, (184), 99 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:13,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 184 transitions. [2022-11-20 09:27:13,917 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 184 transitions. Word has length 23 [2022-11-20 09:27:13,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:13,917 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 184 transitions. [2022-11-20 09:27:13,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:13,918 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 184 transitions. [2022-11-20 09:27:13,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-20 09:27:13,919 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:13,919 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] [2022-11-20 09:27:13,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 09:27:13,920 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:13,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:13,921 INFO L85 PathProgramCache]: Analyzing trace with hash 120599545, now seen corresponding path program 1 times [2022-11-20 09:27:13,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:13,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778978629] [2022-11-20 09:27:13,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:13,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:13,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:14,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:14,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:14,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778978629] [2022-11-20 09:27:14,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778978629] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:14,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:14,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:27:14,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107113103] [2022-11-20 09:27:14,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:14,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:27:14,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:14,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:27:14,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:27:14,022 INFO L87 Difference]: Start difference. First operand 100 states and 184 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:14,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:14,044 INFO L93 Difference]: Finished difference Result 193 states and 357 transitions. [2022-11-20 09:27:14,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:27:14,045 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2022-11-20 09:27:14,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:14,047 INFO L225 Difference]: With dead ends: 193 [2022-11-20 09:27:14,047 INFO L226 Difference]: Without dead ends: 191 [2022-11-20 09:27:14,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:27:14,049 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 70 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:14,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 185 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:27:14,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2022-11-20 09:27:14,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 133. [2022-11-20 09:27:14,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.856060606060606) internal successors, (245), 132 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:14,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 245 transitions. [2022-11-20 09:27:14,065 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 245 transitions. Word has length 23 [2022-11-20 09:27:14,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:14,065 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 245 transitions. [2022-11-20 09:27:14,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:14,066 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 245 transitions. [2022-11-20 09:27:14,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-20 09:27:14,067 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:14,067 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] [2022-11-20 09:27:14,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 09:27:14,067 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:14,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:14,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1873545161, now seen corresponding path program 1 times [2022-11-20 09:27:14,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:14,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196014437] [2022-11-20 09:27:14,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:14,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:14,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:14,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:14,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:14,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196014437] [2022-11-20 09:27:14,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196014437] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:14,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:14,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:27:14,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376643366] [2022-11-20 09:27:14,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:14,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:27:14,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:14,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:27:14,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:27:14,125 INFO L87 Difference]: Start difference. First operand 133 states and 245 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:14,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:14,149 INFO L93 Difference]: Finished difference Result 321 states and 595 transitions. [2022-11-20 09:27:14,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:27:14,149 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2022-11-20 09:27:14,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:14,151 INFO L225 Difference]: With dead ends: 321 [2022-11-20 09:27:14,151 INFO L226 Difference]: Without dead ends: 193 [2022-11-20 09:27:14,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:27:14,153 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 72 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:14,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 214 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:27:14,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2022-11-20 09:27:14,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 191. [2022-11-20 09:27:14,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 190 states have (on average 1.8473684210526315) internal successors, (351), 190 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:14,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 351 transitions. [2022-11-20 09:27:14,170 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 351 transitions. Word has length 23 [2022-11-20 09:27:14,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:14,170 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 351 transitions. [2022-11-20 09:27:14,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:14,171 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 351 transitions. [2022-11-20 09:27:14,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-20 09:27:14,187 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:14,187 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:14,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 09:27:14,187 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:14,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:14,188 INFO L85 PathProgramCache]: Analyzing trace with hash -556169332, now seen corresponding path program 1 times [2022-11-20 09:27:14,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:14,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131372010] [2022-11-20 09:27:14,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:14,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:14,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:14,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:14,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:14,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131372010] [2022-11-20 09:27:14,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131372010] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:14,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:14,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:27:14,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811932520] [2022-11-20 09:27:14,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:14,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:27:14,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:14,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:27:14,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:27:14,245 INFO L87 Difference]: Start difference. First operand 191 states and 351 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:14,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:14,265 INFO L93 Difference]: Finished difference Result 288 states and 526 transitions. [2022-11-20 09:27:14,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:27:14,266 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-20 09:27:14,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:14,267 INFO L225 Difference]: With dead ends: 288 [2022-11-20 09:27:14,267 INFO L226 Difference]: Without dead ends: 195 [2022-11-20 09:27:14,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:27:14,269 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 74 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:14,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 236 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:27:14,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2022-11-20 09:27:14,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 193. [2022-11-20 09:27:14,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 192 states have (on average 1.828125) internal successors, (351), 192 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:14,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 351 transitions. [2022-11-20 09:27:14,286 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 351 transitions. Word has length 24 [2022-11-20 09:27:14,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:14,286 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 351 transitions. [2022-11-20 09:27:14,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:14,286 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 351 transitions. [2022-11-20 09:27:14,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-20 09:27:14,287 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:14,288 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:14,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 09:27:14,288 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:14,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:14,289 INFO L85 PathProgramCache]: Analyzing trace with hash 2049854222, now seen corresponding path program 1 times [2022-11-20 09:27:14,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:14,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499566889] [2022-11-20 09:27:14,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:14,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:14,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:14,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:14,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:14,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499566889] [2022-11-20 09:27:14,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499566889] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:14,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:14,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:27:14,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582796118] [2022-11-20 09:27:14,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:14,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:27:14,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:14,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:27:14,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:27:14,335 INFO L87 Difference]: Start difference. First operand 193 states and 351 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:14,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:14,359 INFO L93 Difference]: Finished difference Result 561 states and 1025 transitions. [2022-11-20 09:27:14,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:27:14,359 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-20 09:27:14,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:14,362 INFO L225 Difference]: With dead ends: 561 [2022-11-20 09:27:14,362 INFO L226 Difference]: Without dead ends: 375 [2022-11-20 09:27:14,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:27:14,365 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 72 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:14,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 187 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:27:14,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2022-11-20 09:27:14,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 373. [2022-11-20 09:27:14,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 372 states have (on average 1.814516129032258) internal successors, (675), 372 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:14,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 675 transitions. [2022-11-20 09:27:14,399 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 675 transitions. Word has length 24 [2022-11-20 09:27:14,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:14,400 INFO L495 AbstractCegarLoop]: Abstraction has 373 states and 675 transitions. [2022-11-20 09:27:14,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:14,400 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 675 transitions. [2022-11-20 09:27:14,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-20 09:27:14,402 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:14,402 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 09:27:14,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 09:27:14,415 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:14,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:14,416 INFO L85 PathProgramCache]: Analyzing trace with hash -250968368, now seen corresponding path program 1 times [2022-11-20 09:27:14,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:14,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105772455] [2022-11-20 09:27:14,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:14,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:14,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:14,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:14,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:14,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105772455] [2022-11-20 09:27:14,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105772455] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:14,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:14,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:27:14,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489884956] [2022-11-20 09:27:14,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:14,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:27:14,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:14,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:27:14,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:27:14,508 INFO L87 Difference]: Start difference. First operand 373 states and 675 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:14,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:14,542 INFO L93 Difference]: Finished difference Result 481 states and 877 transitions. [2022-11-20 09:27:14,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:27:14,543 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-20 09:27:14,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:14,545 INFO L225 Difference]: With dead ends: 481 [2022-11-20 09:27:14,545 INFO L226 Difference]: Without dead ends: 479 [2022-11-20 09:27:14,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:27:14,553 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 67 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:14,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 260 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:27:14,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2022-11-20 09:27:14,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 373. [2022-11-20 09:27:14,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 372 states have (on average 1.803763440860215) internal successors, (671), 372 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:14,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 671 transitions. [2022-11-20 09:27:14,591 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 671 transitions. Word has length 24 [2022-11-20 09:27:14,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:14,593 INFO L495 AbstractCegarLoop]: Abstraction has 373 states and 671 transitions. [2022-11-20 09:27:14,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:14,595 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 671 transitions. [2022-11-20 09:27:14,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-20 09:27:14,598 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:14,599 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] [2022-11-20 09:27:14,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 09:27:14,599 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:14,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:14,600 INFO L85 PathProgramCache]: Analyzing trace with hash -878816148, now seen corresponding path program 1 times [2022-11-20 09:27:14,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:14,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239006288] [2022-11-20 09:27:14,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:14,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:14,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:14,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:14,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:14,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239006288] [2022-11-20 09:27:14,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239006288] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:14,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:14,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:27:14,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347501980] [2022-11-20 09:27:14,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:14,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:27:14,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:14,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:27:14,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:27:14,656 INFO L87 Difference]: Start difference. First operand 373 states and 671 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:14,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:14,699 INFO L93 Difference]: Finished difference Result 709 states and 1289 transitions. [2022-11-20 09:27:14,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:27:14,701 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2022-11-20 09:27:14,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:14,704 INFO L225 Difference]: With dead ends: 709 [2022-11-20 09:27:14,704 INFO L226 Difference]: Without dead ends: 707 [2022-11-20 09:27:14,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:27:14,709 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 64 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:14,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 181 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:27:14,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2022-11-20 09:27:14,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 513. [2022-11-20 09:27:14,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 512 states have (on average 1.779296875) internal successors, (911), 512 states have internal predecessors, (911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:14,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 911 transitions. [2022-11-20 09:27:14,734 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 911 transitions. Word has length 25 [2022-11-20 09:27:14,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:14,736 INFO L495 AbstractCegarLoop]: Abstraction has 513 states and 911 transitions. [2022-11-20 09:27:14,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:14,736 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 911 transitions. [2022-11-20 09:27:14,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-20 09:27:14,738 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:14,738 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] [2022-11-20 09:27:14,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 09:27:14,739 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:14,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:14,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1422006442, now seen corresponding path program 1 times [2022-11-20 09:27:14,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:14,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652851603] [2022-11-20 09:27:14,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:14,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:14,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:14,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:14,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:14,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652851603] [2022-11-20 09:27:14,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652851603] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:14,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:14,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:27:14,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140470930] [2022-11-20 09:27:14,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:14,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:27:14,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:14,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:27:14,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:27:14,811 INFO L87 Difference]: Start difference. First operand 513 states and 911 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:14,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:14,842 INFO L93 Difference]: Finished difference Result 1237 states and 2209 transitions. [2022-11-20 09:27:14,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:27:14,844 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2022-11-20 09:27:14,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:14,848 INFO L225 Difference]: With dead ends: 1237 [2022-11-20 09:27:14,848 INFO L226 Difference]: Without dead ends: 731 [2022-11-20 09:27:14,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:27:14,850 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 70 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:14,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 216 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:27:14,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2022-11-20 09:27:14,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 729. [2022-11-20 09:27:14,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 729 states, 728 states have (on average 1.7733516483516483) internal successors, (1291), 728 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:14,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 1291 transitions. [2022-11-20 09:27:14,876 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 1291 transitions. Word has length 25 [2022-11-20 09:27:14,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:14,876 INFO L495 AbstractCegarLoop]: Abstraction has 729 states and 1291 transitions. [2022-11-20 09:27:14,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:14,877 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 1291 transitions. [2022-11-20 09:27:14,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-20 09:27:14,881 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:14,882 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] [2022-11-20 09:27:14,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 09:27:14,882 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:14,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:14,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1473284061, now seen corresponding path program 1 times [2022-11-20 09:27:14,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:14,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280757237] [2022-11-20 09:27:14,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:14,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:14,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:14,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:14,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:14,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280757237] [2022-11-20 09:27:14,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280757237] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:14,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:14,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:27:14,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136201367] [2022-11-20 09:27:14,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:14,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:27:14,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:14,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:27:14,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:27:14,919 INFO L87 Difference]: Start difference. First operand 729 states and 1291 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:14,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:14,942 INFO L93 Difference]: Finished difference Result 1101 states and 1945 transitions. [2022-11-20 09:27:14,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:27:14,942 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2022-11-20 09:27:14,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:14,945 INFO L225 Difference]: With dead ends: 1101 [2022-11-20 09:27:14,946 INFO L226 Difference]: Without dead ends: 743 [2022-11-20 09:27:14,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:27:14,947 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 72 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:14,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 228 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:27:14,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2022-11-20 09:27:14,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 741. [2022-11-20 09:27:14,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 741 states, 740 states have (on average 1.7554054054054054) internal successors, (1299), 740 states have internal predecessors, (1299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:14,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 1299 transitions. [2022-11-20 09:27:14,969 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 1299 transitions. Word has length 26 [2022-11-20 09:27:14,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:14,969 INFO L495 AbstractCegarLoop]: Abstraction has 741 states and 1299 transitions. [2022-11-20 09:27:14,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:14,970 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 1299 transitions. [2022-11-20 09:27:14,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-20 09:27:14,971 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:14,971 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] [2022-11-20 09:27:14,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 09:27:14,972 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:14,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:14,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1132739493, now seen corresponding path program 1 times [2022-11-20 09:27:14,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:14,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208955278] [2022-11-20 09:27:14,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:14,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:14,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:15,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:15,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:15,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208955278] [2022-11-20 09:27:15,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208955278] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:15,005 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:15,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:27:15,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38957355] [2022-11-20 09:27:15,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:15,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:27:15,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:15,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:27:15,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:27:15,007 INFO L87 Difference]: Start difference. First operand 741 states and 1299 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:15,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:15,037 INFO L93 Difference]: Finished difference Result 1385 states and 2461 transitions. [2022-11-20 09:27:15,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:27:15,037 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2022-11-20 09:27:15,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:15,042 INFO L225 Difference]: With dead ends: 1385 [2022-11-20 09:27:15,043 INFO L226 Difference]: Without dead ends: 1383 [2022-11-20 09:27:15,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:27:15,044 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 61 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:15,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 179 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:27:15,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1383 states. [2022-11-20 09:27:15,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1383 to 1029. [2022-11-20 09:27:15,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1029 states, 1028 states have (on average 1.722762645914397) internal successors, (1771), 1028 states have internal predecessors, (1771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:15,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1029 states to 1029 states and 1771 transitions. [2022-11-20 09:27:15,077 INFO L78 Accepts]: Start accepts. Automaton has 1029 states and 1771 transitions. Word has length 26 [2022-11-20 09:27:15,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:15,078 INFO L495 AbstractCegarLoop]: Abstraction has 1029 states and 1771 transitions. [2022-11-20 09:27:15,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:15,078 INFO L276 IsEmpty]: Start isEmpty. Operand 1029 states and 1771 transitions. [2022-11-20 09:27:15,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-20 09:27:15,080 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:15,080 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] [2022-11-20 09:27:15,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 09:27:15,080 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:15,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:15,081 INFO L85 PathProgramCache]: Analyzing trace with hash -861405213, now seen corresponding path program 1 times [2022-11-20 09:27:15,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:15,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156751947] [2022-11-20 09:27:15,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:15,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:15,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:15,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:15,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:15,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156751947] [2022-11-20 09:27:15,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156751947] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:15,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:15,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:27:15,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527349310] [2022-11-20 09:27:15,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:15,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:27:15,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:15,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:27:15,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:27:15,116 INFO L87 Difference]: Start difference. First operand 1029 states and 1771 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:15,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:15,159 INFO L93 Difference]: Finished difference Result 2457 states and 4253 transitions. [2022-11-20 09:27:15,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:27:15,159 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2022-11-20 09:27:15,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:15,165 INFO L225 Difference]: With dead ends: 2457 [2022-11-20 09:27:15,165 INFO L226 Difference]: Without dead ends: 1447 [2022-11-20 09:27:15,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:27:15,167 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 69 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:15,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 217 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:27:15,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1447 states. [2022-11-20 09:27:15,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1447 to 1445. [2022-11-20 09:27:15,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1444 states have (on average 1.7195290858725762) internal successors, (2483), 1444 states have internal predecessors, (2483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:15,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 2483 transitions. [2022-11-20 09:27:15,219 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 2483 transitions. Word has length 26 [2022-11-20 09:27:15,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:15,219 INFO L495 AbstractCegarLoop]: Abstraction has 1445 states and 2483 transitions. [2022-11-20 09:27:15,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:15,220 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 2483 transitions. [2022-11-20 09:27:15,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-20 09:27:15,221 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:15,221 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] [2022-11-20 09:27:15,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 09:27:15,222 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:15,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:15,223 INFO L85 PathProgramCache]: Analyzing trace with hash 755399007, now seen corresponding path program 1 times [2022-11-20 09:27:15,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:15,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921713391] [2022-11-20 09:27:15,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:15,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:15,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:15,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:15,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:15,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921713391] [2022-11-20 09:27:15,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921713391] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:15,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:15,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:27:15,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587969298] [2022-11-20 09:27:15,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:15,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:27:15,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:15,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:27:15,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:27:15,286 INFO L87 Difference]: Start difference. First operand 1445 states and 2483 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:15,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:15,350 INFO L93 Difference]: Finished difference Result 2169 states and 3717 transitions. [2022-11-20 09:27:15,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:27:15,351 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2022-11-20 09:27:15,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:15,356 INFO L225 Difference]: With dead ends: 2169 [2022-11-20 09:27:15,363 INFO L226 Difference]: Without dead ends: 1463 [2022-11-20 09:27:15,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:27:15,365 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 71 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:15,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 224 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:27:15,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1463 states. [2022-11-20 09:27:15,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1463 to 1461. [2022-11-20 09:27:15,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1461 states, 1460 states have (on average 1.7006849315068493) internal successors, (2483), 1460 states have internal predecessors, (2483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:15,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1461 states to 1461 states and 2483 transitions. [2022-11-20 09:27:15,424 INFO L78 Accepts]: Start accepts. Automaton has 1461 states and 2483 transitions. Word has length 27 [2022-11-20 09:27:15,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:15,424 INFO L495 AbstractCegarLoop]: Abstraction has 1461 states and 2483 transitions. [2022-11-20 09:27:15,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:15,425 INFO L276 IsEmpty]: Start isEmpty. Operand 1461 states and 2483 transitions. [2022-11-20 09:27:15,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-20 09:27:15,426 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:15,426 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] [2022-11-20 09:27:15,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 09:27:15,427 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:15,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:15,427 INFO L85 PathProgramCache]: Analyzing trace with hash -933544735, now seen corresponding path program 1 times [2022-11-20 09:27:15,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:15,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539423763] [2022-11-20 09:27:15,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:15,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:15,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:15,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:15,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:15,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539423763] [2022-11-20 09:27:15,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539423763] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:15,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:15,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:27:15,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522928507] [2022-11-20 09:27:15,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:15,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:27:15,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:15,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:27:15,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:27:15,464 INFO L87 Difference]: Start difference. First operand 1461 states and 2483 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:15,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:15,524 INFO L93 Difference]: Finished difference Result 2697 states and 4661 transitions. [2022-11-20 09:27:15,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:27:15,525 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2022-11-20 09:27:15,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:15,534 INFO L225 Difference]: With dead ends: 2697 [2022-11-20 09:27:15,535 INFO L226 Difference]: Without dead ends: 2695 [2022-11-20 09:27:15,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:27:15,541 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 58 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:15,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 177 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:27:15,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2695 states. [2022-11-20 09:27:15,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2695 to 2053. [2022-11-20 09:27:15,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2053 states, 2052 states have (on average 1.662280701754386) internal successors, (3411), 2052 states have internal predecessors, (3411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:15,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2053 states to 2053 states and 3411 transitions. [2022-11-20 09:27:15,621 INFO L78 Accepts]: Start accepts. Automaton has 2053 states and 3411 transitions. Word has length 27 [2022-11-20 09:27:15,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:15,621 INFO L495 AbstractCegarLoop]: Abstraction has 2053 states and 3411 transitions. [2022-11-20 09:27:15,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:15,622 INFO L276 IsEmpty]: Start isEmpty. Operand 2053 states and 3411 transitions. [2022-11-20 09:27:15,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-20 09:27:15,625 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:15,625 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] [2022-11-20 09:27:15,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 09:27:15,625 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:15,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:15,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1367277855, now seen corresponding path program 1 times [2022-11-20 09:27:15,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:15,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194926501] [2022-11-20 09:27:15,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:15,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:15,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:15,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:15,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:15,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194926501] [2022-11-20 09:27:15,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194926501] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:15,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:15,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:27:15,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940546109] [2022-11-20 09:27:15,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:15,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:27:15,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:15,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:27:15,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:27:15,658 INFO L87 Difference]: Start difference. First operand 2053 states and 3411 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:15,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:15,724 INFO L93 Difference]: Finished difference Result 4873 states and 8149 transitions. [2022-11-20 09:27:15,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:27:15,725 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2022-11-20 09:27:15,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:15,734 INFO L225 Difference]: With dead ends: 4873 [2022-11-20 09:27:15,734 INFO L226 Difference]: Without dead ends: 2855 [2022-11-20 09:27:15,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:27:15,737 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 68 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:15,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 218 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:27:15,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2855 states. [2022-11-20 09:27:15,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2855 to 2853. [2022-11-20 09:27:15,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2853 states, 2852 states have (on average 1.66164095371669) internal successors, (4739), 2852 states have internal predecessors, (4739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:15,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2853 states to 2853 states and 4739 transitions. [2022-11-20 09:27:15,837 INFO L78 Accepts]: Start accepts. Automaton has 2853 states and 4739 transitions. Word has length 27 [2022-11-20 09:27:15,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:15,837 INFO L495 AbstractCegarLoop]: Abstraction has 2853 states and 4739 transitions. [2022-11-20 09:27:15,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:15,838 INFO L276 IsEmpty]: Start isEmpty. Operand 2853 states and 4739 transitions. [2022-11-20 09:27:15,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-20 09:27:15,840 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:15,840 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] [2022-11-20 09:27:15,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 09:27:15,841 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:15,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:15,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1125097720, now seen corresponding path program 1 times [2022-11-20 09:27:15,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:15,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407163814] [2022-11-20 09:27:15,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:15,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:15,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:15,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:15,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:15,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407163814] [2022-11-20 09:27:15,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407163814] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:15,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:15,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:27:15,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583355191] [2022-11-20 09:27:15,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:15,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:27:15,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:15,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:27:15,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:27:15,873 INFO L87 Difference]: Start difference. First operand 2853 states and 4739 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:15,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:15,949 INFO L93 Difference]: Finished difference Result 4281 states and 7093 transitions. [2022-11-20 09:27:15,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:27:15,949 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2022-11-20 09:27:15,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:15,958 INFO L225 Difference]: With dead ends: 4281 [2022-11-20 09:27:15,958 INFO L226 Difference]: Without dead ends: 2887 [2022-11-20 09:27:15,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:27:15,961 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 70 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:15,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 220 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:27:15,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2887 states. [2022-11-20 09:27:16,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2887 to 2885. [2022-11-20 09:27:16,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2885 states, 2884 states have (on average 1.6432038834951457) internal successors, (4739), 2884 states have internal predecessors, (4739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:16,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2885 states to 2885 states and 4739 transitions. [2022-11-20 09:27:16,054 INFO L78 Accepts]: Start accepts. Automaton has 2885 states and 4739 transitions. Word has length 28 [2022-11-20 09:27:16,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:16,054 INFO L495 AbstractCegarLoop]: Abstraction has 2885 states and 4739 transitions. [2022-11-20 09:27:16,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:16,055 INFO L276 IsEmpty]: Start isEmpty. Operand 2885 states and 4739 transitions. [2022-11-20 09:27:16,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-20 09:27:16,057 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:16,058 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] [2022-11-20 09:27:16,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 09:27:16,058 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:16,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:16,059 INFO L85 PathProgramCache]: Analyzing trace with hash -563846022, now seen corresponding path program 1 times [2022-11-20 09:27:16,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:16,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971298733] [2022-11-20 09:27:16,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:16,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:16,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:16,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:16,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:16,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971298733] [2022-11-20 09:27:16,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971298733] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:16,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:16,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:27:16,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172990033] [2022-11-20 09:27:16,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:16,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:27:16,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:16,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:27:16,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:27:16,088 INFO L87 Difference]: Start difference. First operand 2885 states and 4739 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:16,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:16,181 INFO L93 Difference]: Finished difference Result 5257 states and 8805 transitions. [2022-11-20 09:27:16,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:27:16,182 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2022-11-20 09:27:16,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:16,201 INFO L225 Difference]: With dead ends: 5257 [2022-11-20 09:27:16,201 INFO L226 Difference]: Without dead ends: 5255 [2022-11-20 09:27:16,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:27:16,204 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 55 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:16,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 175 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:27:16,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5255 states. [2022-11-20 09:27:16,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5255 to 4101. [2022-11-20 09:27:16,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4101 states, 4100 states have (on average 1.6007317073170733) internal successors, (6563), 4100 states have internal predecessors, (6563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:16,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4101 states to 4101 states and 6563 transitions. [2022-11-20 09:27:16,339 INFO L78 Accepts]: Start accepts. Automaton has 4101 states and 6563 transitions. Word has length 28 [2022-11-20 09:27:16,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:16,339 INFO L495 AbstractCegarLoop]: Abstraction has 4101 states and 6563 transitions. [2022-11-20 09:27:16,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:16,339 INFO L276 IsEmpty]: Start isEmpty. Operand 4101 states and 6563 transitions. [2022-11-20 09:27:16,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-20 09:27:16,358 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:16,358 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] [2022-11-20 09:27:16,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 09:27:16,359 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:16,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:16,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1736976568, now seen corresponding path program 1 times [2022-11-20 09:27:16,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:16,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272997549] [2022-11-20 09:27:16,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:16,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:16,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:16,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:16,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:16,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272997549] [2022-11-20 09:27:16,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272997549] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:16,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:16,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:27:16,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520210194] [2022-11-20 09:27:16,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:16,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:27:16,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:16,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:27:16,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:27:16,390 INFO L87 Difference]: Start difference. First operand 4101 states and 6563 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:16,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:16,513 INFO L93 Difference]: Finished difference Result 9673 states and 15589 transitions. [2022-11-20 09:27:16,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:27:16,514 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2022-11-20 09:27:16,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:16,545 INFO L225 Difference]: With dead ends: 9673 [2022-11-20 09:27:16,545 INFO L226 Difference]: Without dead ends: 5639 [2022-11-20 09:27:16,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:27:16,550 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 67 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:16,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 219 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:27:16,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5639 states. [2022-11-20 09:27:16,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5639 to 5637. [2022-11-20 09:27:16,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5637 states, 5636 states have (on average 1.60166784953868) internal successors, (9027), 5636 states have internal predecessors, (9027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:16,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5637 states to 5637 states and 9027 transitions. [2022-11-20 09:27:16,756 INFO L78 Accepts]: Start accepts. Automaton has 5637 states and 9027 transitions. Word has length 28 [2022-11-20 09:27:16,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:16,756 INFO L495 AbstractCegarLoop]: Abstraction has 5637 states and 9027 transitions. [2022-11-20 09:27:16,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:16,757 INFO L276 IsEmpty]: Start isEmpty. Operand 5637 states and 9027 transitions. [2022-11-20 09:27:16,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-20 09:27:16,764 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:16,765 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] [2022-11-20 09:27:16,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-20 09:27:16,765 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:16,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:16,766 INFO L85 PathProgramCache]: Analyzing trace with hash -299143724, now seen corresponding path program 1 times [2022-11-20 09:27:16,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:16,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405751797] [2022-11-20 09:27:16,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:16,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:16,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:16,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:16,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:16,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405751797] [2022-11-20 09:27:16,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405751797] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:16,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:16,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:27:16,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147393330] [2022-11-20 09:27:16,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:16,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:27:16,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:16,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:27:16,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:27:16,816 INFO L87 Difference]: Start difference. First operand 5637 states and 9027 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:16,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:16,948 INFO L93 Difference]: Finished difference Result 8457 states and 13509 transitions. [2022-11-20 09:27:16,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:27:16,949 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2022-11-20 09:27:16,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:16,961 INFO L225 Difference]: With dead ends: 8457 [2022-11-20 09:27:16,962 INFO L226 Difference]: Without dead ends: 5703 [2022-11-20 09:27:16,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:27:16,967 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 69 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:16,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 216 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:27:16,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5703 states. [2022-11-20 09:27:17,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5703 to 5701. [2022-11-20 09:27:17,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5701 states, 5700 states have (on average 1.5836842105263158) internal successors, (9027), 5700 states have internal predecessors, (9027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:17,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5701 states to 5701 states and 9027 transitions. [2022-11-20 09:27:17,144 INFO L78 Accepts]: Start accepts. Automaton has 5701 states and 9027 transitions. Word has length 29 [2022-11-20 09:27:17,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:17,144 INFO L495 AbstractCegarLoop]: Abstraction has 5701 states and 9027 transitions. [2022-11-20 09:27:17,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:17,145 INFO L276 IsEmpty]: Start isEmpty. Operand 5701 states and 9027 transitions. [2022-11-20 09:27:17,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-20 09:27:17,150 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:17,150 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] [2022-11-20 09:27:17,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-20 09:27:17,150 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:17,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:17,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1988087466, now seen corresponding path program 1 times [2022-11-20 09:27:17,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:17,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730577351] [2022-11-20 09:27:17,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:17,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:17,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:17,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:17,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:17,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730577351] [2022-11-20 09:27:17,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730577351] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:17,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:17,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:27:17,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748944132] [2022-11-20 09:27:17,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:17,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:27:17,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:17,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:27:17,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:27:17,180 INFO L87 Difference]: Start difference. First operand 5701 states and 9027 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:17,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:17,354 INFO L93 Difference]: Finished difference Result 10249 states and 16581 transitions. [2022-11-20 09:27:17,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:27:17,355 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2022-11-20 09:27:17,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:17,373 INFO L225 Difference]: With dead ends: 10249 [2022-11-20 09:27:17,373 INFO L226 Difference]: Without dead ends: 10247 [2022-11-20 09:27:17,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:27:17,376 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 52 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:17,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 173 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:27:17,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10247 states. [2022-11-20 09:27:17,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10247 to 8197. [2022-11-20 09:27:17,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8197 states, 8196 states have (on average 1.5386774036115178) internal successors, (12611), 8196 states have internal predecessors, (12611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:17,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8197 states to 8197 states and 12611 transitions. [2022-11-20 09:27:17,585 INFO L78 Accepts]: Start accepts. Automaton has 8197 states and 12611 transitions. Word has length 29 [2022-11-20 09:27:17,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:17,585 INFO L495 AbstractCegarLoop]: Abstraction has 8197 states and 12611 transitions. [2022-11-20 09:27:17,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:17,586 INFO L276 IsEmpty]: Start isEmpty. Operand 8197 states and 12611 transitions. [2022-11-20 09:27:17,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-20 09:27:17,593 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:17,594 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] [2022-11-20 09:27:17,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-20 09:27:17,594 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:17,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:17,595 INFO L85 PathProgramCache]: Analyzing trace with hash 312735124, now seen corresponding path program 1 times [2022-11-20 09:27:17,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:17,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886518662] [2022-11-20 09:27:17,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:17,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:17,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:17,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:17,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:17,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886518662] [2022-11-20 09:27:17,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886518662] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:17,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:17,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:27:17,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794956820] [2022-11-20 09:27:17,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:17,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:27:17,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:17,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:27:17,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:27:17,644 INFO L87 Difference]: Start difference. First operand 8197 states and 12611 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:17,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:17,853 INFO L93 Difference]: Finished difference Result 19209 states and 29765 transitions. [2022-11-20 09:27:17,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:27:17,856 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2022-11-20 09:27:17,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:17,875 INFO L225 Difference]: With dead ends: 19209 [2022-11-20 09:27:17,875 INFO L226 Difference]: Without dead ends: 11143 [2022-11-20 09:27:17,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:27:17,886 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 66 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:17,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 220 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:27:17,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11143 states. [2022-11-20 09:27:18,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11143 to 11141. [2022-11-20 09:27:18,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11141 states, 11140 states have (on average 1.5399461400359067) internal successors, (17155), 11140 states have internal predecessors, (17155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:18,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11141 states to 11141 states and 17155 transitions. [2022-11-20 09:27:18,245 INFO L78 Accepts]: Start accepts. Automaton has 11141 states and 17155 transitions. Word has length 29 [2022-11-20 09:27:18,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:18,245 INFO L495 AbstractCegarLoop]: Abstraction has 11141 states and 17155 transitions. [2022-11-20 09:27:18,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:18,246 INFO L276 IsEmpty]: Start isEmpty. Operand 11141 states and 17155 transitions. [2022-11-20 09:27:18,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-20 09:27:18,254 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:18,254 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] [2022-11-20 09:27:18,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-20 09:27:18,255 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:18,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:18,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1500955187, now seen corresponding path program 1 times [2022-11-20 09:27:18,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:18,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200160462] [2022-11-20 09:27:18,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:18,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:18,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:18,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:18,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:18,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200160462] [2022-11-20 09:27:18,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200160462] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:18,280 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:18,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:27:18,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418740286] [2022-11-20 09:27:18,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:18,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:27:18,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:18,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:27:18,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:27:18,281 INFO L87 Difference]: Start difference. First operand 11141 states and 17155 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:18,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:18,506 INFO L93 Difference]: Finished difference Result 16713 states and 25669 transitions. [2022-11-20 09:27:18,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:27:18,507 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2022-11-20 09:27:18,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:18,530 INFO L225 Difference]: With dead ends: 16713 [2022-11-20 09:27:18,530 INFO L226 Difference]: Without dead ends: 11271 [2022-11-20 09:27:18,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:27:18,538 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 68 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:18,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 212 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:27:18,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11271 states. [2022-11-20 09:27:18,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11271 to 11269. [2022-11-20 09:27:18,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11269 states, 11268 states have (on average 1.522452964146255) internal successors, (17155), 11268 states have internal predecessors, (17155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:18,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11269 states to 11269 states and 17155 transitions. [2022-11-20 09:27:18,876 INFO L78 Accepts]: Start accepts. Automaton has 11269 states and 17155 transitions. Word has length 30 [2022-11-20 09:27:18,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:18,877 INFO L495 AbstractCegarLoop]: Abstraction has 11269 states and 17155 transitions. [2022-11-20 09:27:18,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:18,877 INFO L276 IsEmpty]: Start isEmpty. Operand 11269 states and 17155 transitions. [2022-11-20 09:27:18,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-20 09:27:18,932 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:18,933 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] [2022-11-20 09:27:18,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-20 09:27:18,933 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:18,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:18,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1105068367, now seen corresponding path program 1 times [2022-11-20 09:27:18,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:18,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545970936] [2022-11-20 09:27:18,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:18,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:18,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:18,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:18,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:18,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545970936] [2022-11-20 09:27:18,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545970936] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:18,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:18,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:27:18,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639328396] [2022-11-20 09:27:18,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:18,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:27:18,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:18,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:27:18,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:27:18,986 INFO L87 Difference]: Start difference. First operand 11269 states and 17155 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:19,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:19,223 INFO L93 Difference]: Finished difference Result 19977 states and 31109 transitions. [2022-11-20 09:27:19,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:27:19,223 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2022-11-20 09:27:19,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:19,263 INFO L225 Difference]: With dead ends: 19977 [2022-11-20 09:27:19,263 INFO L226 Difference]: Without dead ends: 19975 [2022-11-20 09:27:19,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:27:19,272 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 49 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:19,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 171 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:27:19,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19975 states. [2022-11-20 09:27:19,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19975 to 16389. [2022-11-20 09:27:19,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16389 states, 16388 states have (on average 1.476385159873078) internal successors, (24195), 16388 states have internal predecessors, (24195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:19,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16389 states to 16389 states and 24195 transitions. [2022-11-20 09:27:19,672 INFO L78 Accepts]: Start accepts. Automaton has 16389 states and 24195 transitions. Word has length 30 [2022-11-20 09:27:19,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:19,673 INFO L495 AbstractCegarLoop]: Abstraction has 16389 states and 24195 transitions. [2022-11-20 09:27:19,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:19,673 INFO L276 IsEmpty]: Start isEmpty. Operand 16389 states and 24195 transitions. [2022-11-20 09:27:19,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-20 09:27:19,739 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:19,739 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] [2022-11-20 09:27:19,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-20 09:27:19,739 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:19,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:19,740 INFO L85 PathProgramCache]: Analyzing trace with hash -889076339, now seen corresponding path program 1 times [2022-11-20 09:27:19,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:19,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364920623] [2022-11-20 09:27:19,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:19,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:19,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:19,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:19,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:19,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364920623] [2022-11-20 09:27:19,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364920623] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:19,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:19,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:27:19,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331520541] [2022-11-20 09:27:19,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:19,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:27:19,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:19,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:27:19,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:27:19,783 INFO L87 Difference]: Start difference. First operand 16389 states and 24195 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:20,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:20,183 INFO L93 Difference]: Finished difference Result 38153 states and 56709 transitions. [2022-11-20 09:27:20,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:27:20,183 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2022-11-20 09:27:20,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:20,229 INFO L225 Difference]: With dead ends: 38153 [2022-11-20 09:27:20,229 INFO L226 Difference]: Without dead ends: 22023 [2022-11-20 09:27:20,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:27:20,245 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 65 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:20,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 221 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:27:20,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22023 states. [2022-11-20 09:27:21,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22023 to 22021. [2022-11-20 09:27:21,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22021 states, 22020 states have (on average 1.4766121707538602) internal successors, (32515), 22020 states have internal predecessors, (32515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:21,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22021 states to 22021 states and 32515 transitions. [2022-11-20 09:27:21,077 INFO L78 Accepts]: Start accepts. Automaton has 22021 states and 32515 transitions. Word has length 30 [2022-11-20 09:27:21,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:21,078 INFO L495 AbstractCegarLoop]: Abstraction has 22021 states and 32515 transitions. [2022-11-20 09:27:21,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:21,078 INFO L276 IsEmpty]: Start isEmpty. Operand 22021 states and 32515 transitions. [2022-11-20 09:27:21,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-20 09:27:21,101 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:21,101 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] [2022-11-20 09:27:21,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-20 09:27:21,103 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:21,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:21,103 INFO L85 PathProgramCache]: Analyzing trace with hash -102404535, now seen corresponding path program 1 times [2022-11-20 09:27:21,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:21,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420409733] [2022-11-20 09:27:21,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:21,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:21,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:21,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:21,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:21,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420409733] [2022-11-20 09:27:21,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420409733] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:21,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:21,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:27:21,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958379172] [2022-11-20 09:27:21,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:21,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:27:21,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:21,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:27:21,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:27:21,137 INFO L87 Difference]: Start difference. First operand 22021 states and 32515 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:21,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:21,487 INFO L93 Difference]: Finished difference Result 33033 states and 48645 transitions. [2022-11-20 09:27:21,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:27:21,487 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 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 31 [2022-11-20 09:27:21,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:21,587 INFO L225 Difference]: With dead ends: 33033 [2022-11-20 09:27:21,587 INFO L226 Difference]: Without dead ends: 22279 [2022-11-20 09:27:21,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:27:21,598 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 67 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:21,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 208 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:27:21,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22279 states. [2022-11-20 09:27:22,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22279 to 22277. [2022-11-20 09:27:22,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22277 states, 22276 states have (on average 1.4596426647513019) internal successors, (32515), 22276 states have internal predecessors, (32515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:22,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22277 states to 22277 states and 32515 transitions. [2022-11-20 09:27:22,233 INFO L78 Accepts]: Start accepts. Automaton has 22277 states and 32515 transitions. Word has length 31 [2022-11-20 09:27:22,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:22,233 INFO L495 AbstractCegarLoop]: Abstraction has 22277 states and 32515 transitions. [2022-11-20 09:27:22,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:22,234 INFO L276 IsEmpty]: Start isEmpty. Operand 22277 states and 32515 transitions. [2022-11-20 09:27:22,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-20 09:27:22,249 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:22,249 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] [2022-11-20 09:27:22,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-20 09:27:22,249 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:22,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:22,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1791348277, now seen corresponding path program 1 times [2022-11-20 09:27:22,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:22,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39354506] [2022-11-20 09:27:22,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:22,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:22,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:22,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:22,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:22,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39354506] [2022-11-20 09:27:22,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39354506] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:22,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:22,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:27:22,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028780779] [2022-11-20 09:27:22,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:22,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:27:22,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:22,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:27:22,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:27:22,281 INFO L87 Difference]: Start difference. First operand 22277 states and 32515 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:22,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:22,908 INFO L93 Difference]: Finished difference Result 38921 states and 58117 transitions. [2022-11-20 09:27:22,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:27:22,909 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 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 31 [2022-11-20 09:27:22,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:22,954 INFO L225 Difference]: With dead ends: 38921 [2022-11-20 09:27:22,955 INFO L226 Difference]: Without dead ends: 38919 [2022-11-20 09:27:22,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:27:22,970 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 46 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:22,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 169 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:27:22,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38919 states. [2022-11-20 09:27:23,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38919 to 32773. [2022-11-20 09:27:23,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32773 states, 32772 states have (on average 1.4139814475772001) internal successors, (46339), 32772 states have internal predecessors, (46339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:23,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32773 states to 32773 states and 46339 transitions. [2022-11-20 09:27:23,853 INFO L78 Accepts]: Start accepts. Automaton has 32773 states and 46339 transitions. Word has length 31 [2022-11-20 09:27:23,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:23,854 INFO L495 AbstractCegarLoop]: Abstraction has 32773 states and 46339 transitions. [2022-11-20 09:27:23,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:23,854 INFO L276 IsEmpty]: Start isEmpty. Operand 32773 states and 46339 transitions. [2022-11-20 09:27:23,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-20 09:27:23,895 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:23,895 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] [2022-11-20 09:27:23,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-20 09:27:23,895 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:23,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:23,896 INFO L85 PathProgramCache]: Analyzing trace with hash 509474313, now seen corresponding path program 1 times [2022-11-20 09:27:23,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:23,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249609996] [2022-11-20 09:27:23,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:23,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:23,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:23,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:23,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:23,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249609996] [2022-11-20 09:27:23,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249609996] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:23,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:23,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:27:23,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130090216] [2022-11-20 09:27:23,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:23,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:27:23,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:23,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:27:23,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:27:23,939 INFO L87 Difference]: Start difference. First operand 32773 states and 46339 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:24,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:24,887 INFO L93 Difference]: Finished difference Result 75785 states and 107781 transitions. [2022-11-20 09:27:24,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:27:24,888 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 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 31 [2022-11-20 09:27:24,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:24,964 INFO L225 Difference]: With dead ends: 75785 [2022-11-20 09:27:24,965 INFO L226 Difference]: Without dead ends: 43527 [2022-11-20 09:27:24,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:27:24,999 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 64 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:25,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 222 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:27:25,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43527 states. [2022-11-20 09:27:26,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43527 to 43525. [2022-11-20 09:27:26,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43525 states, 43524 states have (on average 1.4117038875103392) internal successors, (61443), 43524 states have internal predecessors, (61443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:26,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43525 states to 43525 states and 61443 transitions. [2022-11-20 09:27:26,508 INFO L78 Accepts]: Start accepts. Automaton has 43525 states and 61443 transitions. Word has length 31 [2022-11-20 09:27:26,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:26,509 INFO L495 AbstractCegarLoop]: Abstraction has 43525 states and 61443 transitions. [2022-11-20 09:27:26,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:26,509 INFO L276 IsEmpty]: Start isEmpty. Operand 43525 states and 61443 transitions. [2022-11-20 09:27:26,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-20 09:27:26,707 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:26,707 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] [2022-11-20 09:27:26,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-20 09:27:26,707 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:26,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:26,709 INFO L85 PathProgramCache]: Analyzing trace with hash 302993058, now seen corresponding path program 1 times [2022-11-20 09:27:26,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:26,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207042164] [2022-11-20 09:27:26,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:26,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:26,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:26,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:26,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:26,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207042164] [2022-11-20 09:27:26,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207042164] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:26,759 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:26,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:27:26,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125504452] [2022-11-20 09:27:26,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:26,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:27:26,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:26,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:27:26,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:27:26,761 INFO L87 Difference]: Start difference. First operand 43525 states and 61443 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:27,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:27,495 INFO L93 Difference]: Finished difference Result 65289 states and 91909 transitions. [2022-11-20 09:27:27,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:27:27,496 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-20 09:27:27,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:27,551 INFO L225 Difference]: With dead ends: 65289 [2022-11-20 09:27:27,552 INFO L226 Difference]: Without dead ends: 44039 [2022-11-20 09:27:27,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:27:27,567 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 66 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:27,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 204 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:27:27,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44039 states. [2022-11-20 09:27:28,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44039 to 44037. [2022-11-20 09:27:28,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44037 states, 44036 states have (on average 1.395290217095104) internal successors, (61443), 44036 states have internal predecessors, (61443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:28,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44037 states to 44037 states and 61443 transitions. [2022-11-20 09:27:28,465 INFO L78 Accepts]: Start accepts. Automaton has 44037 states and 61443 transitions. Word has length 32 [2022-11-20 09:27:28,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:28,465 INFO L495 AbstractCegarLoop]: Abstraction has 44037 states and 61443 transitions. [2022-11-20 09:27:28,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:28,465 INFO L276 IsEmpty]: Start isEmpty. Operand 44037 states and 61443 transitions. [2022-11-20 09:27:28,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-20 09:27:28,486 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:28,486 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] [2022-11-20 09:27:28,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-20 09:27:28,486 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:28,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:28,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1385950684, now seen corresponding path program 1 times [2022-11-20 09:27:28,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:28,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113722266] [2022-11-20 09:27:28,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:28,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:28,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:28,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:28,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:28,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113722266] [2022-11-20 09:27:28,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113722266] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:28,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:28,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:27:28,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973410380] [2022-11-20 09:27:28,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:28,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:27:28,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:28,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:27:28,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:27:28,525 INFO L87 Difference]: Start difference. First operand 44037 states and 61443 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:29,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:29,836 INFO L93 Difference]: Finished difference Result 129033 states and 178181 transitions. [2022-11-20 09:27:29,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:27:29,837 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-20 09:27:29,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:29,922 INFO L225 Difference]: With dead ends: 129033 [2022-11-20 09:27:29,923 INFO L226 Difference]: Without dead ends: 86023 [2022-11-20 09:27:29,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:27:29,959 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 64 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:29,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 187 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:27:30,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86023 states. [2022-11-20 09:27:31,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86023 to 86021. [2022-11-20 09:27:31,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86021 states, 86020 states have (on average 1.357114624505929) internal successors, (116739), 86020 states have internal predecessors, (116739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:31,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86021 states to 86021 states and 116739 transitions. [2022-11-20 09:27:31,813 INFO L78 Accepts]: Start accepts. Automaton has 86021 states and 116739 transitions. Word has length 32 [2022-11-20 09:27:31,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:31,813 INFO L495 AbstractCegarLoop]: Abstraction has 86021 states and 116739 transitions. [2022-11-20 09:27:31,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:31,814 INFO L276 IsEmpty]: Start isEmpty. Operand 86021 states and 116739 transitions. [2022-11-20 09:27:31,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-20 09:27:31,883 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:31,883 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] [2022-11-20 09:27:31,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-20 09:27:31,883 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:31,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:31,884 INFO L85 PathProgramCache]: Analyzing trace with hash 608194022, now seen corresponding path program 1 times [2022-11-20 09:27:31,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:31,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68507363] [2022-11-20 09:27:31,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:31,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:31,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:31,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:31,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:31,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68507363] [2022-11-20 09:27:31,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68507363] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:31,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:31,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:27:31,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166678470] [2022-11-20 09:27:31,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:31,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:27:31,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:31,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:27:31,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:27:31,919 INFO L87 Difference]: Start difference. First operand 86021 states and 116739 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:33,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:33,678 INFO L93 Difference]: Finished difference Result 96265 states and 135173 transitions. [2022-11-20 09:27:33,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:27:33,679 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-20 09:27:33,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:33,777 INFO L225 Difference]: With dead ends: 96265 [2022-11-20 09:27:33,777 INFO L226 Difference]: Without dead ends: 96263 [2022-11-20 09:27:33,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:27:33,791 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 43 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:33,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 220 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:27:33,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96263 states. [2022-11-20 09:27:35,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96263 to 86021. [2022-11-20 09:27:35,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86021 states, 86020 states have (on average 1.345210416182283) internal successors, (115715), 86020 states have internal predecessors, (115715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:35,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86021 states to 86021 states and 115715 transitions. [2022-11-20 09:27:35,690 INFO L78 Accepts]: Start accepts. Automaton has 86021 states and 115715 transitions. Word has length 32 [2022-11-20 09:27:35,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:35,691 INFO L495 AbstractCegarLoop]: Abstraction has 86021 states and 115715 transitions. [2022-11-20 09:27:35,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:35,691 INFO L276 IsEmpty]: Start isEmpty. Operand 86021 states and 115715 transitions. [2022-11-20 09:27:35,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-20 09:27:35,734 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:35,734 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] [2022-11-20 09:27:35,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-20 09:27:35,734 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:35,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:35,735 INFO L85 PathProgramCache]: Analyzing trace with hash -14583106, now seen corresponding path program 1 times [2022-11-20 09:27:35,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:35,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119773275] [2022-11-20 09:27:35,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:35,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:35,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:35,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:35,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:35,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119773275] [2022-11-20 09:27:35,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119773275] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:35,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:35,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:27:35,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319591839] [2022-11-20 09:27:35,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:35,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:27:35,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:35,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:27:35,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:27:35,765 INFO L87 Difference]: Start difference. First operand 86021 states and 115715 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:37,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:37,634 INFO L93 Difference]: Finished difference Result 146441 states and 200709 transitions. [2022-11-20 09:27:37,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:27:37,635 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2022-11-20 09:27:37,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:37,818 INFO L225 Difference]: With dead ends: 146441 [2022-11-20 09:27:37,818 INFO L226 Difference]: Without dead ends: 146439 [2022-11-20 09:27:37,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:27:37,944 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 40 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:37,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 165 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:27:38,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146439 states. [2022-11-20 09:27:40,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146439 to 130053. [2022-11-20 09:27:40,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130053 states, 130052 states have (on average 1.3070694799003475) internal successors, (169987), 130052 states have internal predecessors, (169987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:40,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130053 states to 130053 states and 169987 transitions. [2022-11-20 09:27:40,593 INFO L78 Accepts]: Start accepts. Automaton has 130053 states and 169987 transitions. Word has length 33 [2022-11-20 09:27:40,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:40,593 INFO L495 AbstractCegarLoop]: Abstraction has 130053 states and 169987 transitions. [2022-11-20 09:27:40,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:40,593 INFO L276 IsEmpty]: Start isEmpty. Operand 130053 states and 169987 transitions. [2022-11-20 09:27:40,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-20 09:27:40,688 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:40,688 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] [2022-11-20 09:27:40,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-20 09:27:40,689 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:40,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:40,690 INFO L85 PathProgramCache]: Analyzing trace with hash -2008727812, now seen corresponding path program 1 times [2022-11-20 09:27:40,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:40,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259478177] [2022-11-20 09:27:40,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:40,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:40,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:40,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:40,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:40,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259478177] [2022-11-20 09:27:40,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259478177] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:40,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:40,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:27:40,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725390355] [2022-11-20 09:27:40,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:40,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:27:40,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:40,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:27:40,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:27:40,717 INFO L87 Difference]: Start difference. First operand 130053 states and 169987 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:43,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:43,123 INFO L93 Difference]: Finished difference Result 297993 states and 391173 transitions. [2022-11-20 09:27:43,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:27:43,135 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2022-11-20 09:27:43,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:43,328 INFO L225 Difference]: With dead ends: 297993 [2022-11-20 09:27:43,328 INFO L226 Difference]: Without dead ends: 168967 [2022-11-20 09:27:43,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:27:43,399 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 62 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:43,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 224 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:27:43,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168967 states. [2022-11-20 09:27:46,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168967 to 168965. [2022-11-20 09:27:46,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168965 states, 168964 states have (on average 1.2969567481830448) internal successors, (219139), 168964 states have internal predecessors, (219139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:47,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168965 states to 168965 states and 219139 transitions. [2022-11-20 09:27:47,227 INFO L78 Accepts]: Start accepts. Automaton has 168965 states and 219139 transitions. Word has length 33 [2022-11-20 09:27:47,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 09:27:47,227 INFO L495 AbstractCegarLoop]: Abstraction has 168965 states and 219139 transitions. [2022-11-20 09:27:47,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:47,227 INFO L276 IsEmpty]: Start isEmpty. Operand 168965 states and 219139 transitions. [2022-11-20 09:27:47,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-20 09:27:47,309 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 09:27:47,309 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] [2022-11-20 09:27:47,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-20 09:27:47,310 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 09:27:47,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:47,310 INFO L85 PathProgramCache]: Analyzing trace with hash -451860807, now seen corresponding path program 1 times [2022-11-20 09:27:47,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:47,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470981223] [2022-11-20 09:27:47,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:47,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:47,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:47,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:47,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:47,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470981223] [2022-11-20 09:27:47,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470981223] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:47,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:47,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 09:27:47,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201711847] [2022-11-20 09:27:47,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:47,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 09:27:47,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:47,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 09:27:47,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:27:47,336 INFO L87 Difference]: Start difference. First operand 168965 states and 219139 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:49,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 09:27:49,691 INFO L93 Difference]: Finished difference Result 254985 states and 330757 transitions. [2022-11-20 09:27:49,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 09:27:49,691 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2022-11-20 09:27:49,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 09:27:49,882 INFO L225 Difference]: With dead ends: 254985 [2022-11-20 09:27:49,883 INFO L226 Difference]: Without dead ends: 172039 [2022-11-20 09:27:49,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 09:27:49,929 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 64 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 09:27:49,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 196 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 09:27:50,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172039 states.