./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem18_label20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_671dbf18-d9c2-4b6d-8e71-ba517db1a682/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_671dbf18-d9c2-4b6d-8e71-ba517db1a682/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_671dbf18-d9c2-4b6d-8e71-ba517db1a682/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_671dbf18-d9c2-4b6d-8e71-ba517db1a682/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem18_label20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_671dbf18-d9c2-4b6d-8e71-ba517db1a682/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_671dbf18-d9c2-4b6d-8e71-ba517db1a682/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 839a6dcefe0eda0c15199e733b50fa28a6af9f9aed319dba01e519ca448457f3 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 11:27:32,986 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:27:32,989 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:27:33,026 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:27:33,028 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:27:33,030 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:27:33,034 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:27:33,039 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:27:33,045 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:27:33,047 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:27:33,049 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:27:33,054 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:27:33,055 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:27:33,060 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:27:33,062 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:27:33,065 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:27:33,068 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:27:33,078 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:27:33,080 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:27:33,082 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:27:33,087 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:27:33,089 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:27:33,090 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:27:33,093 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:27:33,099 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:27:33,105 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:27:33,106 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:27:33,107 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:27:33,109 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:27:33,110 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:27:33,111 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:27:33,113 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:27:33,115 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:27:33,117 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:27:33,118 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:27:33,119 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:27:33,120 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:27:33,120 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:27:33,120 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:27:33,122 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:27:33,123 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:27:33,124 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_671dbf18-d9c2-4b6d-8e71-ba517db1a682/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 11:27:33,182 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:27:33,183 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:27:33,183 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:27:33,183 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:27:33,184 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:27:33,185 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:27:33,186 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:27:33,186 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:27:33,187 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:27:33,187 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:27:33,187 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:27:33,188 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:27:33,188 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:27:33,189 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:27:33,189 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:27:33,189 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:27:33,189 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:27:33,190 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:27:33,190 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:27:33,190 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:27:33,191 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:27:33,191 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:27:33,192 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:27:33,192 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:27:33,192 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:27:33,193 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:27:33,193 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:27:33,193 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:27:33,194 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:27:33,206 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:27:33,206 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:27:33,206 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:27:33,207 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:27:33,207 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_671dbf18-d9c2-4b6d-8e71-ba517db1a682/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_671dbf18-d9c2-4b6d-8e71-ba517db1a682/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 839a6dcefe0eda0c15199e733b50fa28a6af9f9aed319dba01e519ca448457f3 [2022-11-16 11:27:33,563 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:27:33,597 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:27:33,600 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:27:33,602 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:27:33,603 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:27:33,605 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_671dbf18-d9c2-4b6d-8e71-ba517db1a682/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/eca-rers2012/Problem18_label20.c [2022-11-16 11:27:33,686 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_671dbf18-d9c2-4b6d-8e71-ba517db1a682/bin/uautomizer-tPACEb0tL8/data/d2e7060f2/fbf5d33430c744859a37c844f0a860bd/FLAG59ddb78f8 [2022-11-16 11:27:34,696 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:27:34,697 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_671dbf18-d9c2-4b6d-8e71-ba517db1a682/sv-benchmarks/c/eca-rers2012/Problem18_label20.c [2022-11-16 11:27:34,721 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_671dbf18-d9c2-4b6d-8e71-ba517db1a682/bin/uautomizer-tPACEb0tL8/data/d2e7060f2/fbf5d33430c744859a37c844f0a860bd/FLAG59ddb78f8 [2022-11-16 11:27:35,226 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_671dbf18-d9c2-4b6d-8e71-ba517db1a682/bin/uautomizer-tPACEb0tL8/data/d2e7060f2/fbf5d33430c744859a37c844f0a860bd [2022-11-16 11:27:35,229 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:27:35,233 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:27:35,240 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:27:35,240 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:27:35,245 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:27:35,246 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:27:35" (1/1) ... [2022-11-16 11:27:35,247 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ba5b7cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:27:35, skipping insertion in model container [2022-11-16 11:27:35,248 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:27:35" (1/1) ... [2022-11-16 11:27:35,258 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:27:35,415 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:27:35,765 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_671dbf18-d9c2-4b6d-8e71-ba517db1a682/sv-benchmarks/c/eca-rers2012/Problem18_label20.c[1084,1097] [2022-11-16 11:27:36,847 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:27:36,860 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:27:36,885 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_671dbf18-d9c2-4b6d-8e71-ba517db1a682/sv-benchmarks/c/eca-rers2012/Problem18_label20.c[1084,1097] [2022-11-16 11:27:37,445 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:27:37,475 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:27:37,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:27:37 WrapperNode [2022-11-16 11:27:37,476 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:27:37,477 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:27:37,478 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:27:37,478 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:27:37,488 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:27:37" (1/1) ... [2022-11-16 11:27:37,569 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:27:37" (1/1) ... [2022-11-16 11:27:37,866 INFO L138 Inliner]: procedures = 16, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 4132 [2022-11-16 11:27:37,867 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:27:37,868 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:27:37,868 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:27:37,868 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:27:37,881 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:27:37" (1/1) ... [2022-11-16 11:27:37,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:27:37" (1/1) ... [2022-11-16 11:27:37,920 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:27:37" (1/1) ... [2022-11-16 11:27:37,921 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:27:37" (1/1) ... [2022-11-16 11:27:38,131 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:27:37" (1/1) ... [2022-11-16 11:27:38,156 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:27:37" (1/1) ... [2022-11-16 11:27:38,194 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:27:37" (1/1) ... [2022-11-16 11:27:38,208 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:27:37" (1/1) ... [2022-11-16 11:27:38,264 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:27:38,266 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:27:38,268 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:27:38,268 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:27:38,269 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:27:37" (1/1) ... [2022-11-16 11:27:38,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:27:38,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_671dbf18-d9c2-4b6d-8e71-ba517db1a682/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:27:38,310 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_671dbf18-d9c2-4b6d-8e71-ba517db1a682/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:27:38,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_671dbf18-d9c2-4b6d-8e71-ba517db1a682/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:27:38,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:27:38,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:27:38,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:27:38,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:27:38,547 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:27:38,550 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:27:44,146 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:27:44,172 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:27:44,172 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 11:27:44,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:27:44 BoogieIcfgContainer [2022-11-16 11:27:44,177 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:27:44,181 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:27:44,181 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:27:44,186 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:27:44,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:27:35" (1/3) ... [2022-11-16 11:27:44,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45a8ae25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:27:44, skipping insertion in model container [2022-11-16 11:27:44,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:27:37" (2/3) ... [2022-11-16 11:27:44,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45a8ae25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:27:44, skipping insertion in model container [2022-11-16 11:27:44,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:27:44" (3/3) ... [2022-11-16 11:27:44,191 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label20.c [2022-11-16 11:27:44,217 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:27:44,217 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 11:27:44,352 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:27:44,359 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;@7fd2bedf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:27:44,359 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 11:27:44,375 INFO L276 IsEmpty]: Start isEmpty. Operand has 757 states, 755 states have (on average 1.9125827814569536) internal successors, (1444), 756 states have internal predecessors, (1444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:44,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-16 11:27:44,381 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:27:44,382 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-16 11:27:44,383 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:27:44,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:27:44,388 INFO L85 PathProgramCache]: Analyzing trace with hash 889694410, now seen corresponding path program 1 times [2022-11-16 11:27:44,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:27:44,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823418498] [2022-11-16 11:27:44,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:27:44,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:27:44,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:27:44,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:27:44,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:27:44,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823418498] [2022-11-16 11:27:44,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823418498] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:27:44,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:27:44,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:27:44,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103672704] [2022-11-16 11:27:44,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:27:44,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:27:44,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:27:44,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:27:44,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:27:44,677 INFO L87 Difference]: Start difference. First operand has 757 states, 755 states have (on average 1.9125827814569536) internal successors, (1444), 756 states have internal predecessors, (1444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:49,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:27:49,939 INFO L93 Difference]: Finished difference Result 2205 states and 4266 transitions. [2022-11-16 11:27:49,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:27:49,942 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2022-11-16 11:27:49,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:27:49,971 INFO L225 Difference]: With dead ends: 2205 [2022-11-16 11:27:49,971 INFO L226 Difference]: Without dead ends: 1384 [2022-11-16 11:27:49,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:27:49,984 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 713 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 2232 mSolverCounterSat, 530 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 2762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 530 IncrementalHoareTripleChecker+Valid, 2232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:27:49,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [713 Valid, 430 Invalid, 2762 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [530 Valid, 2232 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-11-16 11:27:50,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1384 states. [2022-11-16 11:27:50,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1384 to 1384. [2022-11-16 11:27:50,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1384 states, 1383 states have (on average 1.6514822848879247) internal successors, (2284), 1383 states have internal predecessors, (2284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:50,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1384 states to 1384 states and 2284 transitions. [2022-11-16 11:27:50,107 INFO L78 Accepts]: Start accepts. Automaton has 1384 states and 2284 transitions. Word has length 6 [2022-11-16 11:27:50,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:27:50,108 INFO L495 AbstractCegarLoop]: Abstraction has 1384 states and 2284 transitions. [2022-11-16 11:27:50,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:50,109 INFO L276 IsEmpty]: Start isEmpty. Operand 1384 states and 2284 transitions. [2022-11-16 11:27:50,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-16 11:27:50,111 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:27:50,111 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:27:50,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:27:50,112 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:27:50,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:27:50,113 INFO L85 PathProgramCache]: Analyzing trace with hash -400028237, now seen corresponding path program 1 times [2022-11-16 11:27:50,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:27:50,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798409621] [2022-11-16 11:27:50,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:27:50,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:27:50,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:27:50,477 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:27:50,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:27:50,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798409621] [2022-11-16 11:27:50,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798409621] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:27:50,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:27:50,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:27:50,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149134629] [2022-11-16 11:27:50,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:27:50,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:27:50,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:27:50,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:27:50,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:27:50,482 INFO L87 Difference]: Start difference. First operand 1384 states and 2284 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 2 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:55,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:27:55,167 INFO L93 Difference]: Finished difference Result 4146 states and 6847 transitions. [2022-11-16 11:27:55,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:27:55,169 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 2 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-11-16 11:27:55,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:27:55,182 INFO L225 Difference]: With dead ends: 4146 [2022-11-16 11:27:55,182 INFO L226 Difference]: Without dead ends: 2764 [2022-11-16 11:27:55,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:27:55,189 INFO L413 NwaCegarLoop]: 526 mSDtfsCounter, 712 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1701 mSolverCounterSat, 918 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 712 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 2619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 918 IncrementalHoareTripleChecker+Valid, 1701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:27:55,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [712 Valid, 531 Invalid, 2619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [918 Valid, 1701 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-11-16 11:27:55,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2764 states. [2022-11-16 11:27:55,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2764 to 2764. [2022-11-16 11:27:55,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2764 states, 2763 states have (on average 1.404632645674991) internal successors, (3881), 2763 states have internal predecessors, (3881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:55,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2764 states to 2764 states and 3881 transitions. [2022-11-16 11:27:55,268 INFO L78 Accepts]: Start accepts. Automaton has 2764 states and 3881 transitions. Word has length 72 [2022-11-16 11:27:55,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:27:55,272 INFO L495 AbstractCegarLoop]: Abstraction has 2764 states and 3881 transitions. [2022-11-16 11:27:55,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 2 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:55,273 INFO L276 IsEmpty]: Start isEmpty. Operand 2764 states and 3881 transitions. [2022-11-16 11:27:55,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-16 11:27:55,280 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:27:55,281 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:27:55,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:27:55,286 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:27:55,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:27:55,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1916140395, now seen corresponding path program 1 times [2022-11-16 11:27:55,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:27:55,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607538126] [2022-11-16 11:27:55,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:27:55,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:27:55,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:27:55,549 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:27:55,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:27:55,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607538126] [2022-11-16 11:27:55,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607538126] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:27:55,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:27:55,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:27:55,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405734921] [2022-11-16 11:27:55,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:27:55,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:27:55,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:27:55,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:27:55,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:27:55,561 INFO L87 Difference]: Start difference. First operand 2764 states and 3881 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:00,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:28:00,410 INFO L93 Difference]: Finished difference Result 8288 states and 11639 transitions. [2022-11-16 11:28:00,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:28:00,411 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2022-11-16 11:28:00,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:28:00,435 INFO L225 Difference]: With dead ends: 8288 [2022-11-16 11:28:00,435 INFO L226 Difference]: Without dead ends: 5526 [2022-11-16 11:28:00,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:28:00,442 INFO L413 NwaCegarLoop]: 428 mSDtfsCounter, 709 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1994 mSolverCounterSat, 672 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 2666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 672 IncrementalHoareTripleChecker+Valid, 1994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:28:00,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [709 Valid, 434 Invalid, 2666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [672 Valid, 1994 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-11-16 11:28:00,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5526 states. [2022-11-16 11:28:00,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5526 to 5524. [2022-11-16 11:28:00,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5524 states, 5523 states have (on average 1.2657975737823646) internal successors, (6991), 5523 states have internal predecessors, (6991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:00,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5524 states to 5524 states and 6991 transitions. [2022-11-16 11:28:00,642 INFO L78 Accepts]: Start accepts. Automaton has 5524 states and 6991 transitions. Word has length 73 [2022-11-16 11:28:00,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:28:00,643 INFO L495 AbstractCegarLoop]: Abstraction has 5524 states and 6991 transitions. [2022-11-16 11:28:00,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:00,643 INFO L276 IsEmpty]: Start isEmpty. Operand 5524 states and 6991 transitions. [2022-11-16 11:28:00,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-16 11:28:00,646 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:28:00,646 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:28:00,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:28:00,647 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:28:00,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:28:00,648 INFO L85 PathProgramCache]: Analyzing trace with hash 510443924, now seen corresponding path program 1 times [2022-11-16 11:28:00,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:28:00,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373310938] [2022-11-16 11:28:00,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:28:00,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:28:00,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:28:00,836 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:28:00,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:28:00,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373310938] [2022-11-16 11:28:00,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373310938] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:28:00,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:28:00,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:28:00,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700993353] [2022-11-16 11:28:00,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:28:00,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:28:00,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:28:00,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:28:00,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:28:00,841 INFO L87 Difference]: Start difference. First operand 5524 states and 6991 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:05,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:28:05,045 INFO L93 Difference]: Finished difference Result 13806 states and 17710 transitions. [2022-11-16 11:28:05,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:28:05,048 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2022-11-16 11:28:05,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:28:05,076 INFO L225 Difference]: With dead ends: 13806 [2022-11-16 11:28:05,077 INFO L226 Difference]: Without dead ends: 6904 [2022-11-16 11:28:05,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:28:05,150 INFO L413 NwaCegarLoop]: 1195 mSDtfsCounter, 749 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1721 mSolverCounterSat, 904 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 749 SdHoareTripleChecker+Valid, 1202 SdHoareTripleChecker+Invalid, 2625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 904 IncrementalHoareTripleChecker+Valid, 1721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:28:05,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [749 Valid, 1202 Invalid, 2625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [904 Valid, 1721 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-16 11:28:05,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6904 states. [2022-11-16 11:28:05,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6904 to 6904. [2022-11-16 11:28:05,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6904 states, 6903 states have (on average 1.105606258148631) internal successors, (7632), 6903 states have internal predecessors, (7632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:05,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6904 states to 6904 states and 7632 transitions. [2022-11-16 11:28:05,333 INFO L78 Accepts]: Start accepts. Automaton has 6904 states and 7632 transitions. Word has length 99 [2022-11-16 11:28:05,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:28:05,334 INFO L495 AbstractCegarLoop]: Abstraction has 6904 states and 7632 transitions. [2022-11-16 11:28:05,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:05,335 INFO L276 IsEmpty]: Start isEmpty. Operand 6904 states and 7632 transitions. [2022-11-16 11:28:05,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2022-11-16 11:28:05,353 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:28:05,354 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:28:05,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:28:05,355 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:28:05,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:28:05,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1450133345, now seen corresponding path program 1 times [2022-11-16 11:28:05,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:28:05,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949447495] [2022-11-16 11:28:05,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:28:05,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:28:05,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:28:06,453 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-11-16 11:28:06,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:28:06,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949447495] [2022-11-16 11:28:06,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949447495] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:28:06,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:28:06,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:28:06,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72507951] [2022-11-16 11:28:06,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:28:06,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:28:06,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:28:06,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:28:06,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:28:06,463 INFO L87 Difference]: Start difference. First operand 6904 states and 7632 transitions. Second operand has 4 states, 4 states have (on average 56.0) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:11,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:28:11,456 INFO L93 Difference]: Finished difference Result 17258 states and 18886 transitions. [2022-11-16 11:28:11,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:28:11,463 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.0) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 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 293 [2022-11-16 11:28:11,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:28:11,509 INFO L225 Difference]: With dead ends: 17258 [2022-11-16 11:28:11,509 INFO L226 Difference]: Without dead ends: 10356 [2022-11-16 11:28:11,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:28:11,519 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 1875 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 3369 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1875 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 3438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:28:11,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1875 Valid, 260 Invalid, 3438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 3369 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-11-16 11:28:11,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10356 states. [2022-11-16 11:28:11,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10356 to 10354. [2022-11-16 11:28:11,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10354 states, 10353 states have (on average 1.0801699990340965) internal successors, (11183), 10353 states have internal predecessors, (11183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:11,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10354 states to 10354 states and 11183 transitions. [2022-11-16 11:28:11,784 INFO L78 Accepts]: Start accepts. Automaton has 10354 states and 11183 transitions. Word has length 293 [2022-11-16 11:28:11,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:28:11,787 INFO L495 AbstractCegarLoop]: Abstraction has 10354 states and 11183 transitions. [2022-11-16 11:28:11,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.0) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:11,796 INFO L276 IsEmpty]: Start isEmpty. Operand 10354 states and 11183 transitions. [2022-11-16 11:28:11,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2022-11-16 11:28:11,804 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:28:11,805 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:28:11,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:28:11,805 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:28:11,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:28:11,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1097986831, now seen corresponding path program 1 times [2022-11-16 11:28:11,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:28:11,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249916764] [2022-11-16 11:28:11,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:28:11,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:28:11,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:28:12,352 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-16 11:28:12,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:28:12,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249916764] [2022-11-16 11:28:12,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249916764] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:28:12,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:28:12,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:28:12,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356074735] [2022-11-16 11:28:12,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:28:12,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:28:12,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:28:12,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:28:12,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:28:12,356 INFO L87 Difference]: Start difference. First operand 10354 states and 11183 transitions. Second operand has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 2 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:15,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:28:15,340 INFO L93 Difference]: Finished difference Result 23466 states and 25322 transitions. [2022-11-16 11:28:15,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:28:15,344 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 2 states have internal predecessors, (307), 0 states have call successors, (0), 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 372 [2022-11-16 11:28:15,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:28:15,377 INFO L225 Difference]: With dead ends: 23466 [2022-11-16 11:28:15,377 INFO L226 Difference]: Without dead ends: 13114 [2022-11-16 11:28:15,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:28:15,389 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 444 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1653 mSolverCounterSat, 309 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 1962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 309 IncrementalHoareTripleChecker+Valid, 1653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:28:15,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [444 Valid, 59 Invalid, 1962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [309 Valid, 1653 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-16 11:28:15,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13114 states. [2022-11-16 11:28:15,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13114 to 13114. [2022-11-16 11:28:15,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13114 states, 13113 states have (on average 1.0654312514298787) internal successors, (13971), 13113 states have internal predecessors, (13971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:15,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13114 states to 13114 states and 13971 transitions. [2022-11-16 11:28:15,703 INFO L78 Accepts]: Start accepts. Automaton has 13114 states and 13971 transitions. Word has length 372 [2022-11-16 11:28:15,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:28:15,704 INFO L495 AbstractCegarLoop]: Abstraction has 13114 states and 13971 transitions. [2022-11-16 11:28:15,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 2 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:15,705 INFO L276 IsEmpty]: Start isEmpty. Operand 13114 states and 13971 transitions. [2022-11-16 11:28:15,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2022-11-16 11:28:15,717 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:28:15,717 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:28:15,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:28:15,718 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:28:15,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:28:15,719 INFO L85 PathProgramCache]: Analyzing trace with hash 797065656, now seen corresponding path program 1 times [2022-11-16 11:28:15,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:28:15,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936844223] [2022-11-16 11:28:15,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:28:15,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:28:15,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:28:17,407 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2022-11-16 11:28:17,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:28:17,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936844223] [2022-11-16 11:28:17,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936844223] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:28:17,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:28:17,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:28:17,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641981367] [2022-11-16 11:28:17,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:28:17,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:28:17,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:28:17,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:28:17,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:28:17,411 INFO L87 Difference]: Start difference. First operand 13114 states and 13971 transitions. Second operand has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:20,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:28:20,272 INFO L93 Difference]: Finished difference Result 26226 states and 27940 transitions. [2022-11-16 11:28:20,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:28:20,273 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 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 458 [2022-11-16 11:28:20,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:28:20,302 INFO L225 Difference]: With dead ends: 26226 [2022-11-16 11:28:20,302 INFO L226 Difference]: Without dead ends: 13114 [2022-11-16 11:28:20,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:28:20,315 INFO L413 NwaCegarLoop]: 739 mSDtfsCounter, 791 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1696 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 791 SdHoareTripleChecker+Valid, 746 SdHoareTripleChecker+Invalid, 1853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:28:20,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [791 Valid, 746 Invalid, 1853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1696 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-16 11:28:20,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13114 states. [2022-11-16 11:28:20,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13114 to 13114. [2022-11-16 11:28:20,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13114 states, 13113 states have (on average 1.0573476702508962) internal successors, (13865), 13113 states have internal predecessors, (13865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:20,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13114 states to 13114 states and 13865 transitions. [2022-11-16 11:28:20,656 INFO L78 Accepts]: Start accepts. Automaton has 13114 states and 13865 transitions. Word has length 458 [2022-11-16 11:28:20,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:28:20,657 INFO L495 AbstractCegarLoop]: Abstraction has 13114 states and 13865 transitions. [2022-11-16 11:28:20,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:20,658 INFO L276 IsEmpty]: Start isEmpty. Operand 13114 states and 13865 transitions. [2022-11-16 11:28:20,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 549 [2022-11-16 11:28:20,675 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:28:20,676 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:28:20,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:28:20,676 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:28:20,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:28:20,677 INFO L85 PathProgramCache]: Analyzing trace with hash -69953179, now seen corresponding path program 1 times [2022-11-16 11:28:20,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:28:20,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534132095] [2022-11-16 11:28:20,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:28:20,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:28:20,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:28:21,282 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 257 proven. 0 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2022-11-16 11:28:21,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:28:21,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534132095] [2022-11-16 11:28:21,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534132095] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:28:21,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:28:21,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:28:21,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150062599] [2022-11-16 11:28:21,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:28:21,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:28:21,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:28:21,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:28:21,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:28:21,287 INFO L87 Difference]: Start difference. First operand 13114 states and 13865 transitions. Second operand has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:24,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:28:24,479 INFO L93 Difference]: Finished difference Result 28986 states and 30868 transitions. [2022-11-16 11:28:24,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:28:24,483 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 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 548 [2022-11-16 11:28:24,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:28:24,519 INFO L225 Difference]: With dead ends: 28986 [2022-11-16 11:28:24,520 INFO L226 Difference]: Without dead ends: 15874 [2022-11-16 11:28:24,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:28:24,531 INFO L413 NwaCegarLoop]: 932 mSDtfsCounter, 619 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1659 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 938 SdHoareTripleChecker+Invalid, 1916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 1659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:28:24,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [619 Valid, 938 Invalid, 1916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [257 Valid, 1659 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-16 11:28:24,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15874 states. [2022-11-16 11:28:24,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15874 to 15184. [2022-11-16 11:28:24,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15184 states, 15183 states have (on average 1.055851939669367) internal successors, (16031), 15183 states have internal predecessors, (16031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:24,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15184 states to 15184 states and 16031 transitions. [2022-11-16 11:28:24,809 INFO L78 Accepts]: Start accepts. Automaton has 15184 states and 16031 transitions. Word has length 548 [2022-11-16 11:28:24,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:28:24,811 INFO L495 AbstractCegarLoop]: Abstraction has 15184 states and 16031 transitions. [2022-11-16 11:28:24,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:24,812 INFO L276 IsEmpty]: Start isEmpty. Operand 15184 states and 16031 transitions. [2022-11-16 11:28:24,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 610 [2022-11-16 11:28:24,835 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:28:24,836 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:28:24,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:28:24,840 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:28:24,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:28:24,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1495544034, now seen corresponding path program 1 times [2022-11-16 11:28:24,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:28:24,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776475149] [2022-11-16 11:28:24,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:28:24,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:28:24,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:28:26,006 INFO L134 CoverageAnalysis]: Checked inductivity of 586 backedges. 494 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-11-16 11:28:26,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:28:26,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776475149] [2022-11-16 11:28:26,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776475149] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:28:26,007 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:28:26,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:28:26,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207583338] [2022-11-16 11:28:26,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:28:26,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:28:26,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:28:26,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:28:26,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:28:26,012 INFO L87 Difference]: Start difference. First operand 15184 states and 16031 transitions. Second operand has 3 states, 3 states have (on average 174.33333333333334) internal successors, (523), 3 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:29,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:28:29,115 INFO L93 Difference]: Finished difference Result 40716 states and 43099 transitions. [2022-11-16 11:28:29,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:28:29,123 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 174.33333333333334) internal successors, (523), 3 states have internal predecessors, (523), 0 states have call successors, (0), 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 609 [2022-11-16 11:28:29,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:28:29,166 INFO L225 Difference]: With dead ends: 40716 [2022-11-16 11:28:29,166 INFO L226 Difference]: Without dead ends: 24844 [2022-11-16 11:28:29,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:28:29,186 INFO L413 NwaCegarLoop]: 917 mSDtfsCounter, 574 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1772 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 924 SdHoareTripleChecker+Invalid, 2015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 1772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:28:29,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [574 Valid, 924 Invalid, 2015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [243 Valid, 1772 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-16 11:28:29,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24844 states. [2022-11-16 11:28:29,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24844 to 24844. [2022-11-16 11:28:29,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24844 states, 24843 states have (on average 1.045244133156221) internal successors, (25967), 24843 states have internal predecessors, (25967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:29,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24844 states to 24844 states and 25967 transitions. [2022-11-16 11:28:29,772 INFO L78 Accepts]: Start accepts. Automaton has 24844 states and 25967 transitions. Word has length 609 [2022-11-16 11:28:29,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:28:29,778 INFO L495 AbstractCegarLoop]: Abstraction has 24844 states and 25967 transitions. [2022-11-16 11:28:29,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.33333333333334) internal successors, (523), 3 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:29,779 INFO L276 IsEmpty]: Start isEmpty. Operand 24844 states and 25967 transitions. [2022-11-16 11:28:29,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 683 [2022-11-16 11:28:29,792 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:28:29,793 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:28:29,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:28:29,794 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:28:29,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:28:29,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1956431564, now seen corresponding path program 1 times [2022-11-16 11:28:29,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:28:29,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248901437] [2022-11-16 11:28:29,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:28:29,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:28:29,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:28:30,413 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 841 trivial. 0 not checked. [2022-11-16 11:28:30,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:28:30,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248901437] [2022-11-16 11:28:30,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248901437] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:28:30,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:28:30,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:28:30,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056250136] [2022-11-16 11:28:30,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:28:30,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:28:30,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:28:30,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:28:30,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:28:30,417 INFO L87 Difference]: Start difference. First operand 24844 states and 25967 transitions. Second operand has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:33,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:28:33,523 INFO L93 Difference]: Finished difference Result 49686 states and 51932 transitions. [2022-11-16 11:28:33,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:28:33,525 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 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 682 [2022-11-16 11:28:33,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:28:33,575 INFO L225 Difference]: With dead ends: 49686 [2022-11-16 11:28:33,576 INFO L226 Difference]: Without dead ends: 23464 [2022-11-16 11:28:33,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:28:33,594 INFO L413 NwaCegarLoop]: 934 mSDtfsCounter, 696 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1684 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 941 SdHoareTripleChecker+Invalid, 1907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 1684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:28:33,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [696 Valid, 941 Invalid, 1907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [223 Valid, 1684 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-16 11:28:33,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23464 states. [2022-11-16 11:28:33,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23464 to 23464. [2022-11-16 11:28:33,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23464 states, 23463 states have (on average 1.0317095000639305) internal successors, (24207), 23463 states have internal predecessors, (24207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:33,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23464 states to 23464 states and 24207 transitions. [2022-11-16 11:28:33,951 INFO L78 Accepts]: Start accepts. Automaton has 23464 states and 24207 transitions. Word has length 682 [2022-11-16 11:28:33,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:28:33,952 INFO L495 AbstractCegarLoop]: Abstraction has 23464 states and 24207 transitions. [2022-11-16 11:28:33,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:33,953 INFO L276 IsEmpty]: Start isEmpty. Operand 23464 states and 24207 transitions. [2022-11-16 11:28:33,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 730 [2022-11-16 11:28:33,968 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:28:33,970 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:28:33,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 11:28:33,970 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:28:33,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:28:33,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1536609846, now seen corresponding path program 1 times [2022-11-16 11:28:33,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:28:33,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940618965] [2022-11-16 11:28:33,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:28:33,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:28:34,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:28:34,853 INFO L134 CoverageAnalysis]: Checked inductivity of 698 backedges. 280 proven. 0 refuted. 0 times theorem prover too weak. 418 trivial. 0 not checked. [2022-11-16 11:28:34,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:28:34,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940618965] [2022-11-16 11:28:34,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940618965] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:28:34,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:28:34,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:28:34,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069498832] [2022-11-16 11:28:34,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:28:34,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:28:34,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:28:34,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:28:34,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:28:34,858 INFO L87 Difference]: Start difference. First operand 23464 states and 24207 transitions. Second operand has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:37,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:28:37,919 INFO L93 Difference]: Finished difference Result 54516 states and 56364 transitions. [2022-11-16 11:28:37,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:28:37,920 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 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 729 [2022-11-16 11:28:37,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:28:37,952 INFO L225 Difference]: With dead ends: 54516 [2022-11-16 11:28:37,952 INFO L226 Difference]: Without dead ends: 31054 [2022-11-16 11:28:37,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:28:37,975 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 606 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1785 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 606 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 1982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 1785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:28:37,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [606 Valid, 263 Invalid, 1982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 1785 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-16 11:28:38,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31054 states. [2022-11-16 11:28:38,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31054 to 30364. [2022-11-16 11:28:38,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30364 states, 30363 states have (on average 1.0294107960346475) internal successors, (31256), 30363 states have internal predecessors, (31256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:38,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30364 states to 30364 states and 31256 transitions. [2022-11-16 11:28:38,608 INFO L78 Accepts]: Start accepts. Automaton has 30364 states and 31256 transitions. Word has length 729 [2022-11-16 11:28:38,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:28:38,609 INFO L495 AbstractCegarLoop]: Abstraction has 30364 states and 31256 transitions. [2022-11-16 11:28:38,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:38,611 INFO L276 IsEmpty]: Start isEmpty. Operand 30364 states and 31256 transitions. [2022-11-16 11:28:38,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1273 [2022-11-16 11:28:38,646 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:28:38,650 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:28:38,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 11:28:38,651 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:28:38,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:28:38,652 INFO L85 PathProgramCache]: Analyzing trace with hash 422605137, now seen corresponding path program 1 times [2022-11-16 11:28:38,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:28:38,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945136017] [2022-11-16 11:28:38,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:28:38,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:28:38,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:28:41,811 INFO L134 CoverageAnalysis]: Checked inductivity of 1593 backedges. 1135 proven. 0 refuted. 0 times theorem prover too weak. 458 trivial. 0 not checked. [2022-11-16 11:28:41,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:28:41,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945136017] [2022-11-16 11:28:41,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945136017] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:28:41,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:28:41,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:28:41,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116737197] [2022-11-16 11:28:41,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:28:41,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:28:41,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:28:41,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:28:41,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:28:41,816 INFO L87 Difference]: Start difference. First operand 30364 states and 31256 transitions. Second operand has 4 states, 4 states have (on average 205.25) internal successors, (821), 3 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:46,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:28:46,083 INFO L93 Difference]: Finished difference Result 60726 states and 62510 transitions. [2022-11-16 11:28:46,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:28:46,084 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 205.25) internal successors, (821), 3 states have internal predecessors, (821), 0 states have call successors, (0), 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 1272 [2022-11-16 11:28:46,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:28:46,130 INFO L225 Difference]: With dead ends: 60726 [2022-11-16 11:28:46,131 INFO L226 Difference]: Without dead ends: 31054 [2022-11-16 11:28:46,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:28:46,151 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 975 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 2674 mSolverCounterSat, 333 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 975 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 3007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 333 IncrementalHoareTripleChecker+Valid, 2674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:28:46,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [975 Valid, 91 Invalid, 3007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [333 Valid, 2674 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-16 11:28:46,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31054 states. [2022-11-16 11:28:46,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31054 to 30364. [2022-11-16 11:28:46,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30364 states, 30363 states have (on average 1.0293119915686855) internal successors, (31253), 30363 states have internal predecessors, (31253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:46,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30364 states to 30364 states and 31253 transitions. [2022-11-16 11:28:46,608 INFO L78 Accepts]: Start accepts. Automaton has 30364 states and 31253 transitions. Word has length 1272 [2022-11-16 11:28:46,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:28:46,610 INFO L495 AbstractCegarLoop]: Abstraction has 30364 states and 31253 transitions. [2022-11-16 11:28:46,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 205.25) internal successors, (821), 3 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:46,611 INFO L276 IsEmpty]: Start isEmpty. Operand 30364 states and 31253 transitions. [2022-11-16 11:28:46,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1321 [2022-11-16 11:28:46,643 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:28:46,644 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:28:46,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 11:28:46,645 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:28:46,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:28:46,646 INFO L85 PathProgramCache]: Analyzing trace with hash -739889051, now seen corresponding path program 1 times [2022-11-16 11:28:46,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:28:46,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119459322] [2022-11-16 11:28:46,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:28:46,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:28:46,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:28:48,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1834 backedges. 1107 proven. 0 refuted. 0 times theorem prover too weak. 727 trivial. 0 not checked. [2022-11-16 11:28:48,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:28:48,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119459322] [2022-11-16 11:28:48,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119459322] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:28:48,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:28:48,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:28:48,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356950188] [2022-11-16 11:28:48,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:28:48,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:28:48,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:28:48,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:28:48,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:28:48,168 INFO L87 Difference]: Start difference. First operand 30364 states and 31253 transitions. Second operand has 3 states, 3 states have (on average 283.6666666666667) internal successors, (851), 3 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:51,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:28:51,453 INFO L93 Difference]: Finished difference Result 69006 states and 71188 transitions. [2022-11-16 11:28:51,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:28:51,454 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 283.6666666666667) internal successors, (851), 3 states have internal predecessors, (851), 0 states have call successors, (0), 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 1320 [2022-11-16 11:28:51,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:28:51,492 INFO L225 Difference]: With dead ends: 69006 [2022-11-16 11:28:51,492 INFO L226 Difference]: Without dead ends: 38644 [2022-11-16 11:28:51,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:28:51,510 INFO L413 NwaCegarLoop]: 953 mSDtfsCounter, 453 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1761 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 960 SdHoareTripleChecker+Invalid, 1984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 1761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:28:51,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 960 Invalid, 1984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [223 Valid, 1761 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-16 11:28:51,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38644 states. [2022-11-16 11:28:51,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38644 to 38644. [2022-11-16 11:28:51,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38644 states, 38643 states have (on average 1.0281034081204876) internal successors, (39729), 38643 states have internal predecessors, (39729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:52,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38644 states to 38644 states and 39729 transitions. [2022-11-16 11:28:52,033 INFO L78 Accepts]: Start accepts. Automaton has 38644 states and 39729 transitions. Word has length 1320 [2022-11-16 11:28:52,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:28:52,034 INFO L495 AbstractCegarLoop]: Abstraction has 38644 states and 39729 transitions. [2022-11-16 11:28:52,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 283.6666666666667) internal successors, (851), 3 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:52,035 INFO L276 IsEmpty]: Start isEmpty. Operand 38644 states and 39729 transitions. [2022-11-16 11:28:52,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1373 [2022-11-16 11:28:52,073 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:28:52,074 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:28:52,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 11:28:52,075 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:28:52,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:28:52,076 INFO L85 PathProgramCache]: Analyzing trace with hash -91139209, now seen corresponding path program 1 times [2022-11-16 11:28:52,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:28:52,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134993656] [2022-11-16 11:28:52,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:28:52,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:28:52,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:28:55,920 INFO L134 CoverageAnalysis]: Checked inductivity of 2233 backedges. 1454 proven. 614 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2022-11-16 11:28:55,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:28:55,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134993656] [2022-11-16 11:28:55,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134993656] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:28:55,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359198517] [2022-11-16 11:28:55,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:28:55,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:28:55,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_671dbf18-d9c2-4b6d-8e71-ba517db1a682/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:28:55,927 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_671dbf18-d9c2-4b6d-8e71-ba517db1a682/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:28:55,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_671dbf18-d9c2-4b6d-8e71-ba517db1a682/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:28:56,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:28:56,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 1626 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 11:28:56,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:28:56,946 INFO L134 CoverageAnalysis]: Checked inductivity of 2233 backedges. 1466 proven. 0 refuted. 0 times theorem prover too weak. 767 trivial. 0 not checked. [2022-11-16 11:28:56,946 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:28:56,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1359198517] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:28:56,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:28:56,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-11-16 11:28:56,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024142302] [2022-11-16 11:28:56,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:28:56,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:28:56,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:28:56,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:28:56,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:28:56,951 INFO L87 Difference]: Start difference. First operand 38644 states and 39729 transitions. Second operand has 3 states, 3 states have (on average 277.3333333333333) internal successors, (832), 3 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:29:00,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:29:00,321 INFO L93 Difference]: Finished difference Result 90396 states and 93144 transitions. [2022-11-16 11:29:00,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:29:00,322 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 277.3333333333333) internal successors, (832), 3 states have internal predecessors, (832), 0 states have call successors, (0), 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 1372 [2022-11-16 11:29:00,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:29:00,382 INFO L225 Difference]: With dead ends: 90396 [2022-11-16 11:29:00,382 INFO L226 Difference]: Without dead ends: 52444 [2022-11-16 11:29:00,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1378 GetRequests, 1372 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:29:00,404 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 645 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1722 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 645 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 1941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 1722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:29:00,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [645 Valid, 129 Invalid, 1941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 1722 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-16 11:29:00,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52444 states. [2022-11-16 11:29:00,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52444 to 51754. [2022-11-16 11:29:00,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51754 states, 51753 states have (on average 1.0255637354356268) internal successors, (53076), 51753 states have internal predecessors, (53076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:29:00,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51754 states to 51754 states and 53076 transitions. [2022-11-16 11:29:00,980 INFO L78 Accepts]: Start accepts. Automaton has 51754 states and 53076 transitions. Word has length 1372 [2022-11-16 11:29:00,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:29:00,981 INFO L495 AbstractCegarLoop]: Abstraction has 51754 states and 53076 transitions. [2022-11-16 11:29:00,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 277.3333333333333) internal successors, (832), 3 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:29:00,982 INFO L276 IsEmpty]: Start isEmpty. Operand 51754 states and 53076 transitions. [2022-11-16 11:29:01,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1429 [2022-11-16 11:29:01,019 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:29:01,020 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:29:01,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_671dbf18-d9c2-4b6d-8e71-ba517db1a682/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:29:01,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_671dbf18-d9c2-4b6d-8e71-ba517db1a682/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-16 11:29:01,221 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:29:01,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:29:01,223 INFO L85 PathProgramCache]: Analyzing trace with hash -2105960827, now seen corresponding path program 1 times [2022-11-16 11:29:01,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:29:01,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497699817] [2022-11-16 11:29:01,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:29:01,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:29:01,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:29:04,691 INFO L134 CoverageAnalysis]: Checked inductivity of 2519 backedges. 576 proven. 1316 refuted. 0 times theorem prover too weak. 627 trivial. 0 not checked. [2022-11-16 11:29:04,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:29:04,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497699817] [2022-11-16 11:29:04,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497699817] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:29:04,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144190255] [2022-11-16 11:29:04,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:29:04,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:29:04,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_671dbf18-d9c2-4b6d-8e71-ba517db1a682/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:29:04,695 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_671dbf18-d9c2-4b6d-8e71-ba517db1a682/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:29:04,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_671dbf18-d9c2-4b6d-8e71-ba517db1a682/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:29:05,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:29:05,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 1679 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 11:29:05,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:29:05,803 INFO L134 CoverageAnalysis]: Checked inductivity of 2519 backedges. 562 proven. 0 refuted. 0 times theorem prover too weak. 1957 trivial. 0 not checked. [2022-11-16 11:29:05,804 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:29:05,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144190255] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:29:05,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:29:05,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-11-16 11:29:05,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644807760] [2022-11-16 11:29:05,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:29:05,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:29:05,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:29:05,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:29:05,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:29:05,810 INFO L87 Difference]: Start difference. First operand 51754 states and 53076 transitions. Second operand has 3 states, 3 states have (on average 205.66666666666666) internal successors, (617), 3 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:29:09,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:29:09,043 INFO L93 Difference]: Finished difference Result 102126 states and 104761 transitions. [2022-11-16 11:29:09,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:29:09,046 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 205.66666666666666) internal successors, (617), 3 states have internal predecessors, (617), 0 states have call successors, (0), 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 1428 [2022-11-16 11:29:09,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:29:09,121 INFO L225 Difference]: With dead ends: 102126 [2022-11-16 11:29:09,121 INFO L226 Difference]: Without dead ends: 51064 [2022-11-16 11:29:09,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1434 GetRequests, 1428 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:29:09,147 INFO L413 NwaCegarLoop]: 883 mSDtfsCounter, 667 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1605 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 667 SdHoareTripleChecker+Valid, 890 SdHoareTripleChecker+Invalid, 1806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 1605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:29:09,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [667 Valid, 890 Invalid, 1806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 1605 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-16 11:29:09,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51064 states. [2022-11-16 11:29:09,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51064 to 48304. [2022-11-16 11:29:09,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48304 states, 48303 states have (on average 1.0190257333913006) internal successors, (49222), 48303 states have internal predecessors, (49222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:29:09,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48304 states to 48304 states and 49222 transitions. [2022-11-16 11:29:09,796 INFO L78 Accepts]: Start accepts. Automaton has 48304 states and 49222 transitions. Word has length 1428 [2022-11-16 11:29:09,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:29:09,798 INFO L495 AbstractCegarLoop]: Abstraction has 48304 states and 49222 transitions. [2022-11-16 11:29:09,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 205.66666666666666) internal successors, (617), 3 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:29:09,798 INFO L276 IsEmpty]: Start isEmpty. Operand 48304 states and 49222 transitions. [2022-11-16 11:29:09,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1452 [2022-11-16 11:29:09,831 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:29:09,832 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:29:09,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_671dbf18-d9c2-4b6d-8e71-ba517db1a682/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:29:10,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_671dbf18-d9c2-4b6d-8e71-ba517db1a682/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:29:10,034 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:29:10,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:29:10,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1712515049, now seen corresponding path program 1 times [2022-11-16 11:29:10,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:29:10,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585756853] [2022-11-16 11:29:10,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:29:10,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:29:10,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:29:11,350 INFO L134 CoverageAnalysis]: Checked inductivity of 2241 backedges. 1574 proven. 0 refuted. 0 times theorem prover too weak. 667 trivial. 0 not checked. [2022-11-16 11:29:11,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:29:11,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585756853] [2022-11-16 11:29:11,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585756853] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:29:11,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:29:11,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:29:11,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315364539] [2022-11-16 11:29:11,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:29:11,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:29:11,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:29:11,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:29:11,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:29:11,356 INFO L87 Difference]: Start difference. First operand 48304 states and 49222 transitions. Second operand has 3 states, 3 states have (on average 292.3333333333333) internal successors, (877), 3 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:29:14,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:29:14,389 INFO L93 Difference]: Finished difference Result 94536 states and 96363 transitions. [2022-11-16 11:29:14,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:29:14,390 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 292.3333333333333) internal successors, (877), 3 states have internal predecessors, (877), 0 states have call successors, (0), 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 1451 [2022-11-16 11:29:14,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:29:14,446 INFO L225 Difference]: With dead ends: 94536 [2022-11-16 11:29:14,446 INFO L226 Difference]: Without dead ends: 46924 [2022-11-16 11:29:14,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:29:14,467 INFO L413 NwaCegarLoop]: 935 mSDtfsCounter, 587 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1675 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 587 SdHoareTripleChecker+Valid, 942 SdHoareTripleChecker+Invalid, 1747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:29:14,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [587 Valid, 942 Invalid, 1747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1675 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-16 11:29:14,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46924 states. [2022-11-16 11:29:15,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46924 to 46924. [2022-11-16 11:29:15,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46924 states, 46923 states have (on average 1.0175606845257124) internal successors, (47747), 46923 states have internal predecessors, (47747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:29:15,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46924 states to 46924 states and 47747 transitions. [2022-11-16 11:29:15,127 INFO L78 Accepts]: Start accepts. Automaton has 46924 states and 47747 transitions. Word has length 1451 [2022-11-16 11:29:15,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:29:15,129 INFO L495 AbstractCegarLoop]: Abstraction has 46924 states and 47747 transitions. [2022-11-16 11:29:15,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 292.3333333333333) internal successors, (877), 3 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:29:15,129 INFO L276 IsEmpty]: Start isEmpty. Operand 46924 states and 47747 transitions. [2022-11-16 11:29:15,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1454 [2022-11-16 11:29:15,160 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:29:15,160 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:29:15,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 11:29:15,161 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:29:15,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:29:15,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1472813563, now seen corresponding path program 1 times [2022-11-16 11:29:15,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:29:15,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809332711] [2022-11-16 11:29:15,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:29:15,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:29:15,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:29:16,385 INFO L134 CoverageAnalysis]: Checked inductivity of 1884 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 1865 trivial. 0 not checked. [2022-11-16 11:29:16,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:29:16,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809332711] [2022-11-16 11:29:16,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809332711] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:29:16,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:29:16,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:29:16,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824307395] [2022-11-16 11:29:16,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:29:16,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:29:16,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:29:16,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:29:16,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:29:16,391 INFO L87 Difference]: Start difference. First operand 46924 states and 47747 transitions. Second operand has 3 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:29:19,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:29:19,840 INFO L93 Difference]: Finished difference Result 102816 states and 104791 transitions. [2022-11-16 11:29:19,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:29:19,852 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1453 [2022-11-16 11:29:19,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:29:19,931 INFO L225 Difference]: With dead ends: 102816 [2022-11-16 11:29:19,931 INFO L226 Difference]: Without dead ends: 55894 [2022-11-16 11:29:19,944 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 [2022-11-16 11:29:19,945 INFO L413 NwaCegarLoop]: 939 mSDtfsCounter, 689 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1770 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 946 SdHoareTripleChecker+Invalid, 2003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 1770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:29:19,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [689 Valid, 946 Invalid, 2003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 1770 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-16 11:29:19,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55894 states. [2022-11-16 11:29:20,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55894 to 55894. [2022-11-16 11:29:20,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55894 states, 55893 states have (on average 1.017014652997692) internal successors, (56844), 55893 states have internal predecessors, (56844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:29:20,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55894 states to 55894 states and 56844 transitions. [2022-11-16 11:29:20,786 INFO L78 Accepts]: Start accepts. Automaton has 55894 states and 56844 transitions. Word has length 1453 [2022-11-16 11:29:20,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:29:20,796 INFO L495 AbstractCegarLoop]: Abstraction has 55894 states and 56844 transitions. [2022-11-16 11:29:20,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.33333333333334) internal successors, (526), 3 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:29:20,796 INFO L276 IsEmpty]: Start isEmpty. Operand 55894 states and 56844 transitions. [2022-11-16 11:29:20,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1481 [2022-11-16 11:29:20,820 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:29:20,821 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:29:20,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-16 11:29:20,822 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:29:20,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:29:20,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1543450942, now seen corresponding path program 1 times [2022-11-16 11:29:20,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:29:20,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775795937] [2022-11-16 11:29:20,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:29:20,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:29:21,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:29:21,895 INFO L134 CoverageAnalysis]: Checked inductivity of 1955 backedges. 378 proven. 0 refuted. 0 times theorem prover too weak. 1577 trivial. 0 not checked. [2022-11-16 11:29:21,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:29:21,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775795937] [2022-11-16 11:29:21,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775795937] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:29:21,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:29:21,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:29:21,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344210278] [2022-11-16 11:29:21,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:29:21,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:29:21,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:29:21,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:29:21,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:29:21,902 INFO L87 Difference]: Start difference. First operand 55894 states and 56844 transitions. Second operand has 3 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:29:24,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:29:24,339 INFO L93 Difference]: Finished difference Result 111786 states and 113691 transitions. [2022-11-16 11:29:24,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:29:24,340 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 0 states have call successors, (0), 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 1480 [2022-11-16 11:29:24,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:29:24,394 INFO L225 Difference]: With dead ends: 111786 [2022-11-16 11:29:24,394 INFO L226 Difference]: Without dead ends: 56584 [2022-11-16 11:29:24,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:29:24,418 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 619 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1701 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 1969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 1701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:29:24,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [619 Valid, 64 Invalid, 1969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 1701 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-16 11:29:24,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56584 states. [2022-11-16 11:29:25,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56584 to 55894. [2022-11-16 11:29:25,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55894 states, 55893 states have (on average 1.0165852611239332) internal successors, (56820), 55893 states have internal predecessors, (56820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:29:25,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55894 states to 55894 states and 56820 transitions. [2022-11-16 11:29:25,236 INFO L78 Accepts]: Start accepts. Automaton has 55894 states and 56820 transitions. Word has length 1480 [2022-11-16 11:29:25,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:29:25,236 INFO L495 AbstractCegarLoop]: Abstraction has 55894 states and 56820 transitions. [2022-11-16 11:29:25,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:29:25,237 INFO L276 IsEmpty]: Start isEmpty. Operand 55894 states and 56820 transitions. [2022-11-16 11:29:25,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1539 [2022-11-16 11:29:25,272 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:29:25,273 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:29:25,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-16 11:29:25,273 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:29:25,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:29:25,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1976121575, now seen corresponding path program 1 times [2022-11-16 11:29:25,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:29:25,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253714930] [2022-11-16 11:29:25,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:29:25,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:29:25,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:29:26,472 INFO L134 CoverageAnalysis]: Checked inductivity of 2184 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 2161 trivial. 0 not checked. [2022-11-16 11:29:26,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:29:26,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253714930] [2022-11-16 11:29:26,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253714930] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:29:26,473 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:29:26,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:29:26,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986602047] [2022-11-16 11:29:26,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:29:26,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:29:26,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:29:26,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:29:26,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:29:26,477 INFO L87 Difference]: Start difference. First operand 55894 states and 56820 transitions. Second operand has 3 states, 3 states have (on average 175.66666666666666) internal successors, (527), 3 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:29:29,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:29:29,126 INFO L93 Difference]: Finished difference Result 112476 states and 114334 transitions. [2022-11-16 11:29:29,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:29:29,126 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 175.66666666666666) internal successors, (527), 3 states have internal predecessors, (527), 0 states have call successors, (0), 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 1538 [2022-11-16 11:29:29,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:29:29,285 INFO L225 Difference]: With dead ends: 112476 [2022-11-16 11:29:29,285 INFO L226 Difference]: Without dead ends: 56584 [2022-11-16 11:29:29,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:29:29,297 INFO L413 NwaCegarLoop]: 935 mSDtfsCounter, 691 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1778 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 691 SdHoareTripleChecker+Valid, 942 SdHoareTripleChecker+Invalid, 1979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 1778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:29:29,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [691 Valid, 942 Invalid, 1979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 1778 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-16 11:29:29,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56584 states. [2022-11-16 11:29:29,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56584 to 55204. [2022-11-16 11:29:29,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55204 states, 55203 states have (on average 1.0135137583102367) internal successors, (55949), 55203 states have internal predecessors, (55949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:29:29,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55204 states to 55204 states and 55949 transitions. [2022-11-16 11:29:29,969 INFO L78 Accepts]: Start accepts. Automaton has 55204 states and 55949 transitions. Word has length 1538 [2022-11-16 11:29:29,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:29:29,970 INFO L495 AbstractCegarLoop]: Abstraction has 55204 states and 55949 transitions. [2022-11-16 11:29:29,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.66666666666666) internal successors, (527), 3 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:29:29,971 INFO L276 IsEmpty]: Start isEmpty. Operand 55204 states and 55949 transitions. [2022-11-16 11:29:30,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1621 [2022-11-16 11:29:30,072 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:29:30,074 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:29:30,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-16 11:29:30,075 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:29:30,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:29:30,076 INFO L85 PathProgramCache]: Analyzing trace with hash -865142546, now seen corresponding path program 1 times [2022-11-16 11:29:30,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:29:30,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494829364] [2022-11-16 11:29:30,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:29:30,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:29:30,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:29:31,599 INFO L134 CoverageAnalysis]: Checked inductivity of 2488 backedges. 1769 proven. 0 refuted. 0 times theorem prover too weak. 719 trivial. 0 not checked. [2022-11-16 11:29:31,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:29:31,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494829364] [2022-11-16 11:29:31,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494829364] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:29:31,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:29:31,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:29:31,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094094857] [2022-11-16 11:29:31,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:29:31,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:29:31,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:29:31,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:29:31,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:29:31,604 INFO L87 Difference]: Start difference. First operand 55204 states and 55949 transitions. Second operand has 3 states, 3 states have (on average 335.0) internal successors, (1005), 3 states have internal predecessors, (1005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:29:34,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:29:34,680 INFO L93 Difference]: Finished difference Result 135936 states and 137886 transitions. [2022-11-16 11:29:34,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:29:34,681 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 335.0) internal successors, (1005), 3 states have internal predecessors, (1005), 0 states have call successors, (0), 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 1620 [2022-11-16 11:29:34,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:29:34,765 INFO L225 Difference]: With dead ends: 135936 [2022-11-16 11:29:34,765 INFO L226 Difference]: Without dead ends: 81424 [2022-11-16 11:29:34,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:29:34,800 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 615 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1749 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 615 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 1990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 1749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:29:34,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [615 Valid, 236 Invalid, 1990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 1749 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-16 11:29:34,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81424 states. [2022-11-16 11:29:35,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81424 to 80044. [2022-11-16 11:29:35,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80044 states, 80043 states have (on average 1.0127306572717165) internal successors, (81062), 80043 states have internal predecessors, (81062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:29:35,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80044 states to 80044 states and 81062 transitions. [2022-11-16 11:29:35,836 INFO L78 Accepts]: Start accepts. Automaton has 80044 states and 81062 transitions. Word has length 1620 [2022-11-16 11:29:35,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:29:35,837 INFO L495 AbstractCegarLoop]: Abstraction has 80044 states and 81062 transitions. [2022-11-16 11:29:35,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 335.0) internal successors, (1005), 3 states have internal predecessors, (1005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:29:35,837 INFO L276 IsEmpty]: Start isEmpty. Operand 80044 states and 81062 transitions. [2022-11-16 11:29:36,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1781 [2022-11-16 11:29:36,187 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:29:36,200 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:29:36,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-16 11:29:36,201 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:29:36,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:29:36,202 INFO L85 PathProgramCache]: Analyzing trace with hash 616427303, now seen corresponding path program 1 times [2022-11-16 11:29:36,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:29:36,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563333961] [2022-11-16 11:29:36,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:29:36,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:29:36,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:29:39,758 INFO L134 CoverageAnalysis]: Checked inductivity of 3336 backedges. 2466 proven. 291 refuted. 0 times theorem prover too weak. 579 trivial. 0 not checked. [2022-11-16 11:29:39,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:29:39,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563333961] [2022-11-16 11:29:39,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563333961] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:29:39,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861798122] [2022-11-16 11:29:39,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:29:39,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:29:39,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_671dbf18-d9c2-4b6d-8e71-ba517db1a682/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:29:39,763 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_671dbf18-d9c2-4b6d-8e71-ba517db1a682/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:29:39,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_671dbf18-d9c2-4b6d-8e71-ba517db1a682/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:29:40,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:29:40,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 2040 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 11:29:40,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:29:40,559 INFO L134 CoverageAnalysis]: Checked inductivity of 3336 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 3307 trivial. 0 not checked. [2022-11-16 11:29:40,559 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:29:40,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861798122] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:29:40,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:29:40,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-16 11:29:40,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142519333] [2022-11-16 11:29:40,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:29:40,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:29:40,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:29:40,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:29:40,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:29:40,563 INFO L87 Difference]: Start difference. First operand 80044 states and 81062 transitions. Second operand has 3 states, 3 states have (on average 176.33333333333334) internal successors, (529), 3 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:29:43,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:29:43,540 INFO L93 Difference]: Finished difference Result 177336 states and 179676 transitions. [2022-11-16 11:29:43,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:29:43,541 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 176.33333333333334) internal successors, (529), 3 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1780 [2022-11-16 11:29:43,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:29:43,629 INFO L225 Difference]: With dead ends: 177336 [2022-11-16 11:29:43,629 INFO L226 Difference]: Without dead ends: 97294 [2022-11-16 11:29:43,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1784 GetRequests, 1780 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:29:43,666 INFO L413 NwaCegarLoop]: 953 mSDtfsCounter, 695 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1714 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 695 SdHoareTripleChecker+Valid, 960 SdHoareTripleChecker+Invalid, 1874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 1714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:29:43,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [695 Valid, 960 Invalid, 1874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 1714 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-16 11:29:43,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97294 states. [2022-11-16 11:29:44,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97294 to 96604. [2022-11-16 11:29:44,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96604 states, 96603 states have (on average 1.0116248977775018) internal successors, (97726), 96603 states have internal predecessors, (97726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:29:44,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96604 states to 96604 states and 97726 transitions. [2022-11-16 11:29:44,797 INFO L78 Accepts]: Start accepts. Automaton has 96604 states and 97726 transitions. Word has length 1780 [2022-11-16 11:29:44,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:29:44,798 INFO L495 AbstractCegarLoop]: Abstraction has 96604 states and 97726 transitions. [2022-11-16 11:29:44,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 176.33333333333334) internal successors, (529), 3 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:29:44,798 INFO L276 IsEmpty]: Start isEmpty. Operand 96604 states and 97726 transitions. [2022-11-16 11:29:45,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1981 [2022-11-16 11:29:45,327 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:29:45,328 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:29:45,335 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_671dbf18-d9c2-4b6d-8e71-ba517db1a682/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:29:45,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_671dbf18-d9c2-4b6d-8e71-ba517db1a682/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:29:45,536 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:29:45,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:29:45,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1157477949, now seen corresponding path program 1 times [2022-11-16 11:29:45,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:29:45,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505410273] [2022-11-16 11:29:45,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:29:45,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:29:45,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:29:47,140 INFO L134 CoverageAnalysis]: Checked inductivity of 4397 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 4364 trivial. 0 not checked. [2022-11-16 11:29:47,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:29:47,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505410273] [2022-11-16 11:29:47,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505410273] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:29:47,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:29:47,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:29:47,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667821434] [2022-11-16 11:29:47,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:29:47,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:29:47,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:29:47,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:29:47,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:29:47,144 INFO L87 Difference]: Start difference. First operand 96604 states and 97726 transitions. Second operand has 3 states, 3 states have (on average 176.66666666666666) internal successors, (530), 3 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:29:50,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:29:50,111 INFO L93 Difference]: Finished difference Result 204936 states and 207349 transitions. [2022-11-16 11:29:50,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:29:50,115 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 176.66666666666666) internal successors, (530), 3 states have internal predecessors, (530), 0 states have call successors, (0), 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 1980 [2022-11-16 11:29:50,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:29:50,219 INFO L225 Difference]: With dead ends: 204936 [2022-11-16 11:29:50,220 INFO L226 Difference]: Without dead ends: 108334 [2022-11-16 11:29:50,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:29:50,244 INFO L413 NwaCegarLoop]: 800 mSDtfsCounter, 726 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1665 mSolverCounterSat, 280 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 1945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 280 IncrementalHoareTripleChecker+Valid, 1665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:29:50,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [726 Valid, 807 Invalid, 1945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [280 Valid, 1665 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-16 11:29:50,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108334 states. [2022-11-16 11:29:51,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108334 to 103504. [2022-11-16 11:29:51,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103504 states, 103503 states have (on average 1.0104827879385139) internal successors, (104588), 103503 states have internal predecessors, (104588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:29:51,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103504 states to 103504 states and 104588 transitions. [2022-11-16 11:29:51,477 INFO L78 Accepts]: Start accepts. Automaton has 103504 states and 104588 transitions. Word has length 1980 [2022-11-16 11:29:51,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:29:51,478 INFO L495 AbstractCegarLoop]: Abstraction has 103504 states and 104588 transitions. [2022-11-16 11:29:51,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 176.66666666666666) internal successors, (530), 3 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:29:51,479 INFO L276 IsEmpty]: Start isEmpty. Operand 103504 states and 104588 transitions. [2022-11-16 11:29:51,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2113 [2022-11-16 11:29:51,555 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:29:51,556 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:29:51,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-16 11:29:51,556 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:29:51,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:29:51,556 INFO L85 PathProgramCache]: Analyzing trace with hash -129545450, now seen corresponding path program 1 times [2022-11-16 11:29:51,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:29:51,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686405924] [2022-11-16 11:29:51,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:29:51,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:29:52,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:29:55,221 INFO L134 CoverageAnalysis]: Checked inductivity of 3235 backedges. 2553 proven. 107 refuted. 0 times theorem prover too weak. 575 trivial. 0 not checked. [2022-11-16 11:29:55,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:29:55,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686405924] [2022-11-16 11:29:55,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686405924] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:29:55,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526959495] [2022-11-16 11:29:55,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:29:55,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:29:55,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_671dbf18-d9c2-4b6d-8e71-ba517db1a682/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:29:55,238 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_671dbf18-d9c2-4b6d-8e71-ba517db1a682/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:29:55,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_671dbf18-d9c2-4b6d-8e71-ba517db1a682/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 11:29:55,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:29:55,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 2361 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 11:29:55,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:29:58,198 INFO L134 CoverageAnalysis]: Checked inductivity of 3235 backedges. 2446 proven. 214 refuted. 0 times theorem prover too weak. 575 trivial. 0 not checked. [2022-11-16 11:29:58,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:30:01,129 INFO L134 CoverageAnalysis]: Checked inductivity of 3235 backedges. 2660 proven. 0 refuted. 0 times theorem prover too weak. 575 trivial. 0 not checked. [2022-11-16 11:30:01,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [526959495] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 11:30:01,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:30:01,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 10 [2022-11-16 11:30:01,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851286499] [2022-11-16 11:30:01,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:30:01,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:30:01,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:30:01,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:30:01,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=47, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:30:01,135 INFO L87 Difference]: Start difference. First operand 103504 states and 104588 transitions. Second operand has 5 states, 5 states have (on average 335.4) internal successors, (1677), 5 states have internal predecessors, (1677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:30:04,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:30:04,789 INFO L93 Difference]: Finished difference Result 209076 states and 211278 transitions. [2022-11-16 11:30:04,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:30:04,790 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 335.4) internal successors, (1677), 5 states have internal predecessors, (1677), 0 states have call successors, (0), 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 2112 [2022-11-16 11:30:04,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:30:04,898 INFO L225 Difference]: With dead ends: 209076 [2022-11-16 11:30:04,898 INFO L226 Difference]: Without dead ends: 106264 [2022-11-16 11:30:04,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4227 GetRequests, 4218 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=47, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:30:04,942 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 1957 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1931 mSolverCounterSat, 515 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1957 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 2446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 515 IncrementalHoareTripleChecker+Valid, 1931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:30:04,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1957 Valid, 13 Invalid, 2446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [515 Valid, 1931 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-16 11:30:05,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106264 states. [2022-11-16 11:30:06,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106264 to 100054. [2022-11-16 11:30:06,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100054 states, 100053 states have (on average 1.0103245280001598) internal successors, (101086), 100053 states have internal predecessors, (101086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:30:06,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100054 states to 100054 states and 101086 transitions. [2022-11-16 11:30:06,552 INFO L78 Accepts]: Start accepts. Automaton has 100054 states and 101086 transitions. Word has length 2112 [2022-11-16 11:30:06,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:30:06,554 INFO L495 AbstractCegarLoop]: Abstraction has 100054 states and 101086 transitions. [2022-11-16 11:30:06,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 335.4) internal successors, (1677), 5 states have internal predecessors, (1677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:30:06,554 INFO L276 IsEmpty]: Start isEmpty. Operand 100054 states and 101086 transitions. [2022-11-16 11:30:06,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2146 [2022-11-16 11:30:06,661 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:30:06,661 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:30:06,671 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_671dbf18-d9c2-4b6d-8e71-ba517db1a682/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 11:30:06,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_671dbf18-d9c2-4b6d-8e71-ba517db1a682/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-16 11:30:06,868 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:30:06,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:30:06,869 INFO L85 PathProgramCache]: Analyzing trace with hash -152647459, now seen corresponding path program 1 times [2022-11-16 11:30:06,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:30:06,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66815413] [2022-11-16 11:30:06,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:30:06,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:30:07,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:30:11,386 INFO L134 CoverageAnalysis]: Checked inductivity of 3334 backedges. 2366 proven. 581 refuted. 0 times theorem prover too weak. 387 trivial. 0 not checked. [2022-11-16 11:30:11,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:30:11,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66815413] [2022-11-16 11:30:11,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66815413] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:30:11,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149911171] [2022-11-16 11:30:11,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:30:11,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:30:11,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_671dbf18-d9c2-4b6d-8e71-ba517db1a682/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:30:11,389 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_671dbf18-d9c2-4b6d-8e71-ba517db1a682/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:30:11,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_671dbf18-d9c2-4b6d-8e71-ba517db1a682/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 11:30:12,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:30:12,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 2392 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:30:12,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:30:13,968 INFO L134 CoverageAnalysis]: Checked inductivity of 3334 backedges. 2372 proven. 0 refuted. 0 times theorem prover too weak. 962 trivial. 0 not checked. [2022-11-16 11:30:13,968 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:30:13,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149911171] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:30:13,969 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:30:13,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 10 [2022-11-16 11:30:13,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080340192] [2022-11-16 11:30:13,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:30:13,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:30:13,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:30:13,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:30:13,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:30:13,975 INFO L87 Difference]: Start difference. First operand 100054 states and 101086 transitions. Second operand has 4 states, 4 states have (on average 332.25) internal successors, (1329), 3 states have internal predecessors, (1329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:30:17,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:30:17,629 INFO L93 Difference]: Finished difference Result 211836 states and 214103 transitions. [2022-11-16 11:30:17,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:30:17,629 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 332.25) internal successors, (1329), 3 states have internal predecessors, (1329), 0 states have call successors, (0), 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 2145 [2022-11-16 11:30:17,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:30:17,734 INFO L225 Difference]: With dead ends: 211836 [2022-11-16 11:30:17,734 INFO L226 Difference]: Without dead ends: 112474 [2022-11-16 11:30:17,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2152 GetRequests, 2143 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:30:17,776 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 790 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 2605 mSolverCounterSat, 292 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 790 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 2897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 292 IncrementalHoareTripleChecker+Valid, 2605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:30:17,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [790 Valid, 64 Invalid, 2897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [292 Valid, 2605 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-16 11:30:17,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112474 states. [2022-11-16 11:30:18,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112474 to 108334. [2022-11-16 11:30:18,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108334 states, 108333 states have (on average 1.0105231093018747) internal successors, (109473), 108333 states have internal predecessors, (109473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:30:19,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108334 states to 108334 states and 109473 transitions. [2022-11-16 11:30:19,449 INFO L78 Accepts]: Start accepts. Automaton has 108334 states and 109473 transitions. Word has length 2145 [2022-11-16 11:30:19,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:30:19,450 INFO L495 AbstractCegarLoop]: Abstraction has 108334 states and 109473 transitions. [2022-11-16 11:30:19,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 332.25) internal successors, (1329), 3 states have internal predecessors, (1329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:30:19,451 INFO L276 IsEmpty]: Start isEmpty. Operand 108334 states and 109473 transitions. [2022-11-16 11:30:19,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2191 [2022-11-16 11:30:19,520 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:30:19,521 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:30:19,528 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_671dbf18-d9c2-4b6d-8e71-ba517db1a682/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 11:30:19,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_671dbf18-d9c2-4b6d-8e71-ba517db1a682/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-16 11:30:19,722 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:30:19,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:30:19,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1219596017, now seen corresponding path program 1 times [2022-11-16 11:30:19,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:30:19,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207859631] [2022-11-16 11:30:19,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:30:19,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:30:19,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:30:21,921 INFO L134 CoverageAnalysis]: Checked inductivity of 3700 backedges. 2397 proven. 0 refuted. 0 times theorem prover too weak. 1303 trivial. 0 not checked. [2022-11-16 11:30:21,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:30:21,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207859631] [2022-11-16 11:30:21,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207859631] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:30:21,922 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:30:21,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:30:21,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217679028] [2022-11-16 11:30:21,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:30:21,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:30:21,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:30:21,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:30:21,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:30:21,925 INFO L87 Difference]: Start difference. First operand 108334 states and 109473 transitions. Second operand has 3 states, 3 states have (on average 486.6666666666667) internal successors, (1460), 3 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)