./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem18_label09.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0acca0-d0eb-482b-a384-bc009d7ccdaa/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0acca0-d0eb-482b-a384-bc009d7ccdaa/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0acca0-d0eb-482b-a384-bc009d7ccdaa/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0acca0-d0eb-482b-a384-bc009d7ccdaa/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem18_label09.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0acca0-d0eb-482b-a384-bc009d7ccdaa/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0acca0-d0eb-482b-a384-bc009d7ccdaa/bin/uautomizer-ZsLfNo2U6R --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 8238f3d69c5a2ce68eeddb740d20da5e42c16de126d9f09bc4b980c86c1ce0e1 --- 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-38b53e6 [2022-11-25 18:11:21,704 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:11:21,707 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:11:21,754 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:11:21,755 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:11:21,756 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:11:21,758 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:11:21,760 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:11:21,762 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:11:21,772 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:11:21,774 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:11:21,778 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:11:21,783 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:11:21,784 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:11:21,786 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:11:21,788 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:11:21,790 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:11:21,792 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:11:21,794 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:11:21,802 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:11:21,804 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:11:21,807 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:11:21,810 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:11:21,811 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:11:21,823 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:11:21,824 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:11:21,824 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:11:21,827 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:11:21,827 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:11:21,829 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:11:21,829 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:11:21,830 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:11:21,833 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:11:21,834 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:11:21,835 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:11:21,836 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:11:21,837 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:11:21,837 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:11:21,838 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:11:21,839 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:11:21,840 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:11:21,841 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0acca0-d0eb-482b-a384-bc009d7ccdaa/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 18:11:21,888 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:11:21,888 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:11:21,889 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:11:21,890 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:11:21,891 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:11:21,891 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:11:21,892 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:11:21,893 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:11:21,893 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:11:21,893 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:11:21,895 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 18:11:21,895 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 18:11:21,895 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 18:11:21,895 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:11:21,896 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 18:11:21,896 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:11:21,896 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 18:11:21,897 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 18:11:21,897 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 18:11:21,897 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:11:21,897 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 18:11:21,898 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:11:21,898 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:11:21,898 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:11:21,899 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:11:21,899 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:11:21,899 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:11:21,910 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 18:11:21,911 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 18:11:21,911 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 18:11:21,911 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 18:11:21,911 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 18:11:21,911 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 18:11:21,912 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 18:11:21,912 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0acca0-d0eb-482b-a384-bc009d7ccdaa/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0acca0-d0eb-482b-a384-bc009d7ccdaa/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8238f3d69c5a2ce68eeddb740d20da5e42c16de126d9f09bc4b980c86c1ce0e1 [2022-11-25 18:11:22,221 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:11:22,259 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:11:22,262 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:11:22,264 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:11:22,264 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:11:22,266 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0acca0-d0eb-482b-a384-bc009d7ccdaa/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/eca-rers2012/Problem18_label09.c [2022-11-25 18:11:25,436 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:11:26,091 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:11:26,092 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0acca0-d0eb-482b-a384-bc009d7ccdaa/sv-benchmarks/c/eca-rers2012/Problem18_label09.c [2022-11-25 18:11:26,120 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0acca0-d0eb-482b-a384-bc009d7ccdaa/bin/uautomizer-ZsLfNo2U6R/data/1d348ed0a/4dcb0080a5ba40fcbdcc84396fded2c7/FLAGdb3983625 [2022-11-25 18:11:26,139 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0acca0-d0eb-482b-a384-bc009d7ccdaa/bin/uautomizer-ZsLfNo2U6R/data/1d348ed0a/4dcb0080a5ba40fcbdcc84396fded2c7 [2022-11-25 18:11:26,142 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:11:26,144 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:11:26,145 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:11:26,146 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:11:26,150 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:11:26,151 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:11:26" (1/1) ... [2022-11-25 18:11:26,152 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43c6ba8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:26, skipping insertion in model container [2022-11-25 18:11:26,153 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:11:26" (1/1) ... [2022-11-25 18:11:26,162 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:11:26,267 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:11:26,469 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0acca0-d0eb-482b-a384-bc009d7ccdaa/sv-benchmarks/c/eca-rers2012/Problem18_label09.c[1446,1459] [2022-11-25 18:11:27,464 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:11:27,479 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 18:11:27,505 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0acca0-d0eb-482b-a384-bc009d7ccdaa/sv-benchmarks/c/eca-rers2012/Problem18_label09.c[1446,1459] [2022-11-25 18:11:27,925 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:11:27,988 INFO L208 MainTranslator]: Completed translation [2022-11-25 18:11:27,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:27 WrapperNode [2022-11-25 18:11:27,989 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:11:27,991 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 18:11:27,992 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 18:11:27,992 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 18:11:28,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:27" (1/1) ... [2022-11-25 18:11:28,096 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:27" (1/1) ... [2022-11-25 18:11:28,355 INFO L138 Inliner]: procedures = 16, calls = 10, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 4132 [2022-11-25 18:11:28,355 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 18:11:28,356 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 18:11:28,356 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 18:11:28,357 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 18:11:28,368 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:27" (1/1) ... [2022-11-25 18:11:28,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:27" (1/1) ... [2022-11-25 18:11:28,411 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:27" (1/1) ... [2022-11-25 18:11:28,412 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:27" (1/1) ... [2022-11-25 18:11:28,521 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:27" (1/1) ... [2022-11-25 18:11:28,557 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:27" (1/1) ... [2022-11-25 18:11:28,579 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:27" (1/1) ... [2022-11-25 18:11:28,595 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:27" (1/1) ... [2022-11-25 18:11:28,625 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 18:11:28,627 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 18:11:28,628 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 18:11:28,628 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 18:11:28,629 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:27" (1/1) ... [2022-11-25 18:11:28,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:11:28,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0acca0-d0eb-482b-a384-bc009d7ccdaa/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:11:28,675 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0acca0-d0eb-482b-a384-bc009d7ccdaa/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 18:11:28,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0acca0-d0eb-482b-a384-bc009d7ccdaa/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 18:11:28,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 18:11:28,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 18:11:28,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 18:11:28,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 18:11:28,837 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 18:11:28,839 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 18:11:33,474 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 18:11:33,505 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 18:11:33,505 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 18:11:33,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:11:33 BoogieIcfgContainer [2022-11-25 18:11:33,509 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 18:11:33,513 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 18:11:33,513 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 18:11:33,516 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 18:11:33,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:11:26" (1/3) ... [2022-11-25 18:11:33,519 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10e7987c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:11:33, skipping insertion in model container [2022-11-25 18:11:33,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:27" (2/3) ... [2022-11-25 18:11:33,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10e7987c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:11:33, skipping insertion in model container [2022-11-25 18:11:33,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:11:33" (3/3) ... [2022-11-25 18:11:33,523 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label09.c [2022-11-25 18:11:33,544 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 18:11:33,544 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 18:11:33,643 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:11:33,653 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;@20cbdc76, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:11:33,654 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 18:11:33,665 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) [2022-11-25 18:11:33,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-25 18:11:33,675 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:11:33,676 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:11:33,677 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:11:33,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:11:33,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1417350502, now seen corresponding path program 1 times [2022-11-25 18:11:33,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:11:33,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850877853] [2022-11-25 18:11:33,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:11:33,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:11:33,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:33,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:11:34,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:11:34,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850877853] [2022-11-25 18:11:34,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850877853] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:11:34,052 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:11:34,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:11:34,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455902031] [2022-11-25 18:11:34,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:11:34,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:11:34,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:11:34,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:11:34,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:11:34,112 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 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:38,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:11:38,691 INFO L93 Difference]: Finished difference Result 2205 states and 4266 transitions. [2022-11-25 18:11:38,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:11:38,695 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2022-11-25 18:11:38,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:11:38,726 INFO L225 Difference]: With dead ends: 2205 [2022-11-25 18:11:38,726 INFO L226 Difference]: Without dead ends: 1384 [2022-11-25 18:11:38,731 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 [2022-11-25 18:11:38,734 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 753 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 2402 mSolverCounterSat, 547 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 753 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 2949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 547 IncrementalHoareTripleChecker+Valid, 2402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-25 18:11:38,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [753 Valid, 71 Invalid, 2949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [547 Valid, 2402 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-25 18:11:38,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1384 states. [2022-11-25 18:11:38,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1384 to 1384. [2022-11-25 18:11:38,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1384 states, 1383 states have (on average 1.8770788141720895) internal successors, (2596), 1383 states have internal predecessors, (2596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:38,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1384 states to 1384 states and 2596 transitions. [2022-11-25 18:11:38,850 INFO L78 Accepts]: Start accepts. Automaton has 1384 states and 2596 transitions. Word has length 10 [2022-11-25 18:11:38,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:11:38,850 INFO L495 AbstractCegarLoop]: Abstraction has 1384 states and 2596 transitions. [2022-11-25 18:11:38,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:38,851 INFO L276 IsEmpty]: Start isEmpty. Operand 1384 states and 2596 transitions. [2022-11-25 18:11:38,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-25 18:11:38,853 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:11:38,853 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-25 18:11:38,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 18:11:38,854 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:11:38,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:11:38,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1120386966, now seen corresponding path program 1 times [2022-11-25 18:11:38,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:11:38,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466750037] [2022-11-25 18:11:38,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:11:38,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:11:38,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:39,091 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:11:39,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:11:39,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466750037] [2022-11-25 18:11:39,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466750037] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:11:39,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:11:39,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:11:39,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844477627] [2022-11-25 18:11:39,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:11:39,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:11:39,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:11:39,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:11:39,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:11:39,095 INFO L87 Difference]: Start difference. First operand 1384 states and 2596 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:43,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:11:43,018 INFO L93 Difference]: Finished difference Result 4146 states and 7783 transitions. [2022-11-25 18:11:43,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:11:43,019 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2022-11-25 18:11:43,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:11:43,032 INFO L225 Difference]: With dead ends: 4146 [2022-11-25 18:11:43,033 INFO L226 Difference]: Without dead ends: 2764 [2022-11-25 18:11:43,040 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 [2022-11-25 18:11:43,044 INFO L413 NwaCegarLoop]: 532 mSDtfsCounter, 709 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1703 mSolverCounterSat, 918 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 2621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 918 IncrementalHoareTripleChecker+Valid, 1703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-25 18:11:43,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [709 Valid, 537 Invalid, 2621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [918 Valid, 1703 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-25 18:11:43,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2764 states. [2022-11-25 18:11:43,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2764 to 2764. [2022-11-25 18:11:43,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2764 states, 2763 states have (on average 1.5153818313427434) internal successors, (4187), 2763 states have internal predecessors, (4187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:43,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2764 states to 2764 states and 4187 transitions. [2022-11-25 18:11:43,140 INFO L78 Accepts]: Start accepts. Automaton has 2764 states and 4187 transitions. Word has length 75 [2022-11-25 18:11:43,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:11:43,142 INFO L495 AbstractCegarLoop]: Abstraction has 2764 states and 4187 transitions. [2022-11-25 18:11:43,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:43,143 INFO L276 IsEmpty]: Start isEmpty. Operand 2764 states and 4187 transitions. [2022-11-25 18:11:43,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-25 18:11:43,149 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:11:43,152 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:11:43,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 18:11:43,153 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:11:43,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:11:43,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1612276894, now seen corresponding path program 1 times [2022-11-25 18:11:43,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:11:43,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789043849] [2022-11-25 18:11:43,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:11:43,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:11:43,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:43,408 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:11:43,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:11:43,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789043849] [2022-11-25 18:11:43,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789043849] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:11:43,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:11:43,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:11:43,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048055280] [2022-11-25 18:11:43,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:11:43,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:11:43,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:11:43,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:11:43,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:11:43,412 INFO L87 Difference]: Start difference. First operand 2764 states and 4187 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:47,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:11:47,560 INFO L93 Difference]: Finished difference Result 8286 states and 12556 transitions. [2022-11-25 18:11:47,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:11:47,560 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-11-25 18:11:47,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:11:47,617 INFO L225 Difference]: With dead ends: 8286 [2022-11-25 18:11:47,618 INFO L226 Difference]: Without dead ends: 5524 [2022-11-25 18:11:47,624 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 [2022-11-25 18:11:47,629 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 732 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1934 mSolverCounterSat, 1075 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 732 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 3009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1075 IncrementalHoareTripleChecker+Valid, 1934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-25 18:11:47,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [732 Valid, 109 Invalid, 3009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1075 Valid, 1934 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-25 18:11:47,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5524 states. [2022-11-25 18:11:47,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5524 to 5524. [2022-11-25 18:11:47,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5524 states, 5523 states have (on average 1.463516204961072) internal successors, (8083), 5523 states have internal predecessors, (8083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:47,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5524 states to 5524 states and 8083 transitions. [2022-11-25 18:11:47,753 INFO L78 Accepts]: Start accepts. Automaton has 5524 states and 8083 transitions. Word has length 78 [2022-11-25 18:11:47,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:11:47,756 INFO L495 AbstractCegarLoop]: Abstraction has 5524 states and 8083 transitions. [2022-11-25 18:11:47,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:47,756 INFO L276 IsEmpty]: Start isEmpty. Operand 5524 states and 8083 transitions. [2022-11-25 18:11:47,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-25 18:11:47,763 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:11:47,763 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:11:47,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 18:11:47,764 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:11:47,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:11:47,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1046866268, now seen corresponding path program 1 times [2022-11-25 18:11:47,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:11:47,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233571846] [2022-11-25 18:11:47,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:11:47,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:11:47,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:48,171 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:11:48,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:11:48,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233571846] [2022-11-25 18:11:48,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233571846] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:11:48,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:11:48,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:11:48,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852743902] [2022-11-25 18:11:48,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:11:48,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:11:48,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:11:48,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:11:48,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:11:48,177 INFO L87 Difference]: Start difference. First operand 5524 states and 8083 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:54,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:11:54,024 INFO L93 Difference]: Finished difference Result 13116 states and 18840 transitions. [2022-11-25 18:11:54,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:11:54,024 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 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 103 [2022-11-25 18:11:54,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:11:54,052 INFO L225 Difference]: With dead ends: 13116 [2022-11-25 18:11:54,052 INFO L226 Difference]: Without dead ends: 7594 [2022-11-25 18:11:54,058 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 [2022-11-25 18:11:54,060 INFO L413 NwaCegarLoop]: 624 mSDtfsCounter, 1923 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 4348 mSolverCounterSat, 435 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1923 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 4783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 435 IncrementalHoareTripleChecker+Valid, 4348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-11-25 18:11:54,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1923 Valid, 641 Invalid, 4783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [435 Valid, 4348 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-11-25 18:11:54,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7594 states. [2022-11-25 18:11:54,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7594 to 6904. [2022-11-25 18:11:54,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6904 states, 6903 states have (on average 1.3925829349558163) internal successors, (9613), 6903 states have internal predecessors, (9613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:54,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6904 states to 6904 states and 9613 transitions. [2022-11-25 18:11:54,255 INFO L78 Accepts]: Start accepts. Automaton has 6904 states and 9613 transitions. Word has length 103 [2022-11-25 18:11:54,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:11:54,256 INFO L495 AbstractCegarLoop]: Abstraction has 6904 states and 9613 transitions. [2022-11-25 18:11:54,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:54,256 INFO L276 IsEmpty]: Start isEmpty. Operand 6904 states and 9613 transitions. [2022-11-25 18:11:54,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-11-25 18:11:54,259 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:11:54,260 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-25 18:11:54,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 18:11:54,260 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:11:54,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:11:54,261 INFO L85 PathProgramCache]: Analyzing trace with hash 291166817, now seen corresponding path program 1 times [2022-11-25 18:11:54,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:11:54,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749841737] [2022-11-25 18:11:54,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:11:54,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:11:54,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:54,547 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-25 18:11:54,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:11:54,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749841737] [2022-11-25 18:11:54,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749841737] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:11:54,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:11:54,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:11:54,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932160180] [2022-11-25 18:11:54,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:11:54,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:11:54,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:11:54,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:11:54,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:11:54,554 INFO L87 Difference]: Start difference. First operand 6904 states and 9613 transitions. Second operand has 3 states, 3 states have (on average 62.0) internal successors, (186), 2 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:58,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:11:58,217 INFO L93 Difference]: Finished difference Result 18636 states and 25989 transitions. [2022-11-25 18:11:58,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:11:58,218 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 2 states have internal predecessors, (186), 0 states have call successors, (0), 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 192 [2022-11-25 18:11:58,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:11:58,257 INFO L225 Difference]: With dead ends: 18636 [2022-11-25 18:11:58,257 INFO L226 Difference]: Without dead ends: 11734 [2022-11-25 18:11:58,266 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 [2022-11-25 18:11:58,267 INFO L413 NwaCegarLoop]: 454 mSDtfsCounter, 590 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2003 mSolverCounterSat, 673 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 590 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 2676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 673 IncrementalHoareTripleChecker+Valid, 2003 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-25 18:11:58,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [590 Valid, 460 Invalid, 2676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [673 Valid, 2003 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-25 18:11:58,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11734 states. [2022-11-25 18:11:58,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11734 to 10354. [2022-11-25 18:11:58,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10354 states, 10353 states have (on average 1.3185550082101807) internal successors, (13651), 10353 states have internal predecessors, (13651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:58,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10354 states to 10354 states and 13651 transitions. [2022-11-25 18:11:58,525 INFO L78 Accepts]: Start accepts. Automaton has 10354 states and 13651 transitions. Word has length 192 [2022-11-25 18:11:58,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:11:58,532 INFO L495 AbstractCegarLoop]: Abstraction has 10354 states and 13651 transitions. [2022-11-25 18:11:58,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.0) internal successors, (186), 2 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:11:58,533 INFO L276 IsEmpty]: Start isEmpty. Operand 10354 states and 13651 transitions. [2022-11-25 18:11:58,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2022-11-25 18:11:58,543 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:11:58,543 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:11:58,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 18:11:58,544 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:11:58,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:11:58,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1023726276, now seen corresponding path program 1 times [2022-11-25 18:11:58,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:11:58,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774634251] [2022-11-25 18:11:58,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:11:58,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:11:58,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:11:59,312 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 247 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-25 18:11:59,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:11:59,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774634251] [2022-11-25 18:11:59,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774634251] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:11:59,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:11:59,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:11:59,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723215848] [2022-11-25 18:11:59,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:11:59,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:11:59,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:11:59,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:11:59,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:11:59,316 INFO L87 Difference]: Start difference. First operand 10354 states and 13651 transitions. Second operand has 4 states, 4 states have (on average 88.75) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:12:02,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:12:02,711 INFO L93 Difference]: Finished difference Result 22829 states and 29483 transitions. [2022-11-25 18:12:02,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:12:02,716 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 88.75) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 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 375 [2022-11-25 18:12:02,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:12:02,749 INFO L225 Difference]: With dead ends: 22829 [2022-11-25 18:12:02,750 INFO L226 Difference]: Without dead ends: 12424 [2022-11-25 18:12:02,759 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 [2022-11-25 18:12:02,760 INFO L413 NwaCegarLoop]: 625 mSDtfsCounter, 529 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 2590 mSolverCounterSat, 381 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 2971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 381 IncrementalHoareTripleChecker+Valid, 2590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-25 18:12:02,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [529 Valid, 637 Invalid, 2971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [381 Valid, 2590 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-25 18:12:02,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12424 states. [2022-11-25 18:12:02,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12424 to 12424. [2022-11-25 18:12:02,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12424 states, 12423 states have (on average 1.2051034371729856) internal successors, (14971), 12423 states have internal predecessors, (14971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:12:02,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12424 states to 12424 states and 14971 transitions. [2022-11-25 18:12:02,961 INFO L78 Accepts]: Start accepts. Automaton has 12424 states and 14971 transitions. Word has length 375 [2022-11-25 18:12:02,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:12:02,961 INFO L495 AbstractCegarLoop]: Abstraction has 12424 states and 14971 transitions. [2022-11-25 18:12:02,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.75) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:12:02,962 INFO L276 IsEmpty]: Start isEmpty. Operand 12424 states and 14971 transitions. [2022-11-25 18:12:02,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2022-11-25 18:12:02,969 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:12:02,970 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:12:02,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 18:12:02,970 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:12:02,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:12:02,971 INFO L85 PathProgramCache]: Analyzing trace with hash 192007006, now seen corresponding path program 1 times [2022-11-25 18:12:02,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:12:02,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400761590] [2022-11-25 18:12:02,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:12:02,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:12:03,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:12:03,890 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:12:03,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:12:03,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400761590] [2022-11-25 18:12:03,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400761590] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:12:03,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:12:03,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:12:03,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353133929] [2022-11-25 18:12:03,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:12:03,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:12:03,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:12:03,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:12:03,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:12:03,894 INFO L87 Difference]: Start difference. First operand 12424 states and 14971 transitions. Second operand has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:12:07,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:12:07,140 INFO L93 Difference]: Finished difference Result 31056 states and 37518 transitions. [2022-11-25 18:12:07,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:12:07,141 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 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 402 [2022-11-25 18:12:07,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:12:07,181 INFO L225 Difference]: With dead ends: 31056 [2022-11-25 18:12:07,181 INFO L226 Difference]: Without dead ends: 18634 [2022-11-25 18:12:07,196 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 [2022-11-25 18:12:07,197 INFO L413 NwaCegarLoop]: 972 mSDtfsCounter, 600 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1955 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 600 SdHoareTripleChecker+Valid, 979 SdHoareTripleChecker+Invalid, 2277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 1955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-25 18:12:07,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [600 Valid, 979 Invalid, 2277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 1955 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-25 18:12:07,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18634 states. [2022-11-25 18:12:07,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18634 to 18634. [2022-11-25 18:12:07,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18634 states, 18633 states have (on average 1.1674985241238662) internal successors, (21754), 18633 states have internal predecessors, (21754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:12:07,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18634 states to 18634 states and 21754 transitions. [2022-11-25 18:12:07,589 INFO L78 Accepts]: Start accepts. Automaton has 18634 states and 21754 transitions. Word has length 402 [2022-11-25 18:12:07,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:12:07,590 INFO L495 AbstractCegarLoop]: Abstraction has 18634 states and 21754 transitions. [2022-11-25 18:12:07,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:12:07,591 INFO L276 IsEmpty]: Start isEmpty. Operand 18634 states and 21754 transitions. [2022-11-25 18:12:07,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2022-11-25 18:12:07,600 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:12:07,601 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:12:07,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 18:12:07,601 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:12:07,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:12:07,602 INFO L85 PathProgramCache]: Analyzing trace with hash 446592561, now seen corresponding path program 1 times [2022-11-25 18:12:07,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:12:07,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838097819] [2022-11-25 18:12:07,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:12:07,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:12:07,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:12:08,459 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:12:08,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:12:08,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838097819] [2022-11-25 18:12:08,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838097819] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:12:08,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:12:08,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:12:08,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302731246] [2022-11-25 18:12:08,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:12:08,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:12:08,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:12:08,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:12:08,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:12:08,463 INFO L87 Difference]: Start difference. First operand 18634 states and 21754 transitions. Second operand has 4 states, 4 states have (on average 102.25) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:12:13,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:12:13,416 INFO L93 Difference]: Finished difference Result 40716 states and 47643 transitions. [2022-11-25 18:12:13,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:12:13,423 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 102.25) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 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 409 [2022-11-25 18:12:13,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:12:13,454 INFO L225 Difference]: With dead ends: 40716 [2022-11-25 18:12:13,454 INFO L226 Difference]: Without dead ends: 22084 [2022-11-25 18:12:13,466 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 [2022-11-25 18:12:13,467 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 1060 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 3111 mSolverCounterSat, 936 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1060 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 4047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 936 IncrementalHoareTripleChecker+Valid, 3111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-25 18:12:13,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1060 Valid, 100 Invalid, 4047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [936 Valid, 3111 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-11-25 18:12:13,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22084 states. [2022-11-25 18:12:13,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22084 to 22084. [2022-11-25 18:12:13,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22084 states, 22083 states have (on average 1.1541910066567043) internal successors, (25488), 22083 states have internal predecessors, (25488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:12:13,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22084 states to 22084 states and 25488 transitions. [2022-11-25 18:12:13,785 INFO L78 Accepts]: Start accepts. Automaton has 22084 states and 25488 transitions. Word has length 409 [2022-11-25 18:12:13,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:12:13,786 INFO L495 AbstractCegarLoop]: Abstraction has 22084 states and 25488 transitions. [2022-11-25 18:12:13,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 102.25) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:12:13,787 INFO L276 IsEmpty]: Start isEmpty. Operand 22084 states and 25488 transitions. [2022-11-25 18:12:13,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 939 [2022-11-25 18:12:13,824 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:12:13,828 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:12:13,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 18:12:13,829 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:12:13,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:12:13,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1757608893, now seen corresponding path program 1 times [2022-11-25 18:12:13,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:12:13,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288373055] [2022-11-25 18:12:13,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:12:13,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:12:14,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:12:15,270 INFO L134 CoverageAnalysis]: Checked inductivity of 548 backedges. 251 proven. 0 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2022-11-25 18:12:15,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:12:15,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288373055] [2022-11-25 18:12:15,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288373055] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:12:15,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:12:15,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:12:15,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311660158] [2022-11-25 18:12:15,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:12:15,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:12:15,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:12:15,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:12:15,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:12:15,275 INFO L87 Difference]: Start difference. First operand 22084 states and 25488 transitions. Second operand has 3 states, 3 states have (on average 214.0) internal successors, (642), 3 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:12:18,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:12:18,314 INFO L93 Difference]: Finished difference Result 53136 states and 61908 transitions. [2022-11-25 18:12:18,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:12:18,319 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 214.0) internal successors, (642), 3 states have internal predecessors, (642), 0 states have call successors, (0), 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 938 [2022-11-25 18:12:18,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:12:18,367 INFO L225 Difference]: With dead ends: 53136 [2022-11-25 18:12:18,367 INFO L226 Difference]: Without dead ends: 31054 [2022-11-25 18:12:18,386 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 [2022-11-25 18:12:18,389 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 666 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1885 mSolverCounterSat, 466 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 666 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 2351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 466 IncrementalHoareTripleChecker+Valid, 1885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-25 18:12:18,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [666 Valid, 223 Invalid, 2351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [466 Valid, 1885 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-25 18:12:18,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31054 states. [2022-11-25 18:12:18,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31054 to 30364. [2022-11-25 18:12:18,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30364 states, 30363 states have (on average 1.148997134670487) internal successors, (34887), 30363 states have internal predecessors, (34887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:12:18,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30364 states to 30364 states and 34887 transitions. [2022-11-25 18:12:18,841 INFO L78 Accepts]: Start accepts. Automaton has 30364 states and 34887 transitions. Word has length 938 [2022-11-25 18:12:18,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:12:18,843 INFO L495 AbstractCegarLoop]: Abstraction has 30364 states and 34887 transitions. [2022-11-25 18:12:18,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 214.0) internal successors, (642), 3 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:12:18,844 INFO L276 IsEmpty]: Start isEmpty. Operand 30364 states and 34887 transitions. [2022-11-25 18:12:18,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1057 [2022-11-25 18:12:18,895 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:12:18,896 INFO L195 NwaCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:12:18,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 18:12:18,897 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:12:18,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:12:18,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1406532645, now seen corresponding path program 1 times [2022-11-25 18:12:18,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:12:18,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661678251] [2022-11-25 18:12:18,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:12:18,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:12:19,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:12:22,990 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 353 proven. 531 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:12:22,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:12:22,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661678251] [2022-11-25 18:12:22,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661678251] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:12:22,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123662880] [2022-11-25 18:12:22,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:12:22,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:12:22,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0acca0-d0eb-482b-a384-bc009d7ccdaa/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:12:22,999 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0acca0-d0eb-482b-a384-bc009d7ccdaa/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:12:23,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0acca0-d0eb-482b-a384-bc009d7ccdaa/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 18:12:23,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:12:23,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 1228 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 18:12:23,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:12:26,029 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 309 proven. 0 refuted. 0 times theorem prover too weak. 575 trivial. 0 not checked. [2022-11-25 18:12:26,029 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:12:26,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123662880] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:12:26,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:12:26,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 10 [2022-11-25 18:12:26,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717418278] [2022-11-25 18:12:26,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:12:26,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:12:26,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:12:26,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:12:26,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-11-25 18:12:26,035 INFO L87 Difference]: Start difference. First operand 30364 states and 34887 transitions. Second operand has 4 states, 4 states have (on average 155.25) internal successors, (621), 3 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:12:31,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:12:31,375 INFO L93 Difference]: Finished difference Result 67628 states and 77888 transitions. [2022-11-25 18:12:31,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:12:31,376 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 155.25) internal successors, (621), 3 states have internal predecessors, (621), 0 states have call successors, (0), 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 1056 [2022-11-25 18:12:31,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:12:31,430 INFO L225 Difference]: With dead ends: 67628 [2022-11-25 18:12:31,431 INFO L226 Difference]: Without dead ends: 37266 [2022-11-25 18:12:31,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1063 GetRequests, 1054 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-11-25 18:12:31,449 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 1070 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2779 mSolverCounterSat, 1450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1070 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 4229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1450 IncrementalHoareTripleChecker+Valid, 2779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-25 18:12:31,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1070 Valid, 116 Invalid, 4229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1450 Valid, 2779 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-11-25 18:12:31,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37266 states. [2022-11-25 18:12:31,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37266 to 35884. [2022-11-25 18:12:31,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35884 states, 35883 states have (on average 1.1495973023437283) internal successors, (41251), 35883 states have internal predecessors, (41251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:12:31,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35884 states to 35884 states and 41251 transitions. [2022-11-25 18:12:31,923 INFO L78 Accepts]: Start accepts. Automaton has 35884 states and 41251 transitions. Word has length 1056 [2022-11-25 18:12:31,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:12:31,927 INFO L495 AbstractCegarLoop]: Abstraction has 35884 states and 41251 transitions. [2022-11-25 18:12:31,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 155.25) internal successors, (621), 3 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:12:31,927 INFO L276 IsEmpty]: Start isEmpty. Operand 35884 states and 41251 transitions. [2022-11-25 18:12:31,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1150 [2022-11-25 18:12:31,943 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:12:31,946 INFO L195 NwaCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:12:31,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0acca0-d0eb-482b-a384-bc009d7ccdaa/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 18:12:32,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0acca0-d0eb-482b-a384-bc009d7ccdaa/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-25 18:12:32,155 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:12:32,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:12:32,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1364661412, now seen corresponding path program 1 times [2022-11-25 18:12:32,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:12:32,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550574766] [2022-11-25 18:12:32,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:12:32,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:12:32,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:12:33,612 INFO L134 CoverageAnalysis]: Checked inductivity of 1242 backedges. 452 proven. 0 refuted. 0 times theorem prover too weak. 790 trivial. 0 not checked. [2022-11-25 18:12:33,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:12:33,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550574766] [2022-11-25 18:12:33,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550574766] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:12:33,613 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:12:33,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 18:12:33,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201703952] [2022-11-25 18:12:33,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:12:33,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:12:33,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:12:33,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:12:33,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:12:33,617 INFO L87 Difference]: Start difference. First operand 35884 states and 41251 transitions. Second operand has 4 states, 4 states have (on average 160.75) internal successors, (643), 4 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:12:39,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:12:39,338 INFO L93 Difference]: Finished difference Result 93846 states and 108105 transitions. [2022-11-25 18:12:39,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:12:39,341 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 160.75) internal successors, (643), 4 states have internal predecessors, (643), 0 states have call successors, (0), 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 1149 [2022-11-25 18:12:39,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:12:39,424 INFO L225 Difference]: With dead ends: 93846 [2022-11-25 18:12:39,425 INFO L226 Difference]: Without dead ends: 57964 [2022-11-25 18:12:39,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:12:39,451 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 1433 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 4049 mSolverCounterSat, 771 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1433 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 4820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 771 IncrementalHoareTripleChecker+Valid, 4049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-11-25 18:12:39,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1433 Valid, 208 Invalid, 4820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [771 Valid, 4049 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-11-25 18:12:39,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57964 states. [2022-11-25 18:12:40,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57964 to 46924. [2022-11-25 18:12:40,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46924 states, 46923 states have (on average 1.1579822262003707) internal successors, (54336), 46923 states have internal predecessors, (54336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:12:40,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46924 states to 46924 states and 54336 transitions. [2022-11-25 18:12:40,334 INFO L78 Accepts]: Start accepts. Automaton has 46924 states and 54336 transitions. Word has length 1149 [2022-11-25 18:12:40,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:12:40,337 INFO L495 AbstractCegarLoop]: Abstraction has 46924 states and 54336 transitions. [2022-11-25 18:12:40,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 160.75) internal successors, (643), 4 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:12:40,338 INFO L276 IsEmpty]: Start isEmpty. Operand 46924 states and 54336 transitions. [2022-11-25 18:12:40,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1164 [2022-11-25 18:12:40,354 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:12:40,356 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:12:40,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 18:12:40,357 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:12:40,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:12:40,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1387350716, now seen corresponding path program 1 times [2022-11-25 18:12:40,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:12:40,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196321669] [2022-11-25 18:12:40,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:12:40,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:12:40,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:12:43,124 INFO L134 CoverageAnalysis]: Checked inductivity of 1305 backedges. 637 proven. 93 refuted. 0 times theorem prover too weak. 575 trivial. 0 not checked. [2022-11-25 18:12:43,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:12:43,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196321669] [2022-11-25 18:12:43,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196321669] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:12:43,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613565] [2022-11-25 18:12:43,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:12:43,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:12:43,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0acca0-d0eb-482b-a384-bc009d7ccdaa/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:12:43,128 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0acca0-d0eb-482b-a384-bc009d7ccdaa/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:12:43,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0acca0-d0eb-482b-a384-bc009d7ccdaa/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 18:12:43,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:12:43,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 1359 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 18:12:43,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:12:44,092 INFO L134 CoverageAnalysis]: Checked inductivity of 1305 backedges. 410 proven. 0 refuted. 0 times theorem prover too weak. 895 trivial. 0 not checked. [2022-11-25 18:12:44,092 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:12:44,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1613565] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:12:44,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:12:44,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-25 18:12:44,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563389990] [2022-11-25 18:12:44,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:12:44,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:12:44,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:12:44,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:12:44,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:12:44,097 INFO L87 Difference]: Start difference. First operand 46924 states and 54336 transitions. Second operand has 3 states, 3 states have (on average 207.33333333333334) internal successors, (622), 3 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:12:47,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:12:47,365 INFO L93 Difference]: Finished difference Result 95226 states and 110186 transitions. [2022-11-25 18:12:47,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:12:47,366 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 207.33333333333334) internal successors, (622), 3 states have internal predecessors, (622), 0 states have call successors, (0), 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 1163 [2022-11-25 18:12:47,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:12:47,435 INFO L225 Difference]: With dead ends: 95226 [2022-11-25 18:12:47,435 INFO L226 Difference]: Without dead ends: 48304 [2022-11-25 18:12:47,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1167 GetRequests, 1163 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:12:47,465 INFO L413 NwaCegarLoop]: 1128 mSDtfsCounter, 598 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1849 mSolverCounterSat, 406 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 598 SdHoareTripleChecker+Valid, 1135 SdHoareTripleChecker+Invalid, 2255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 406 IncrementalHoareTripleChecker+Valid, 1849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-25 18:12:47,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [598 Valid, 1135 Invalid, 2255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [406 Valid, 1849 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-25 18:12:47,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48304 states. [2022-11-25 18:12:48,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48304 to 48304. [2022-11-25 18:12:48,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48304 states, 48303 states have (on average 1.1366581785810406) internal successors, (54904), 48303 states have internal predecessors, (54904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:12:48,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48304 states to 48304 states and 54904 transitions. [2022-11-25 18:12:48,252 INFO L78 Accepts]: Start accepts. Automaton has 48304 states and 54904 transitions. Word has length 1163 [2022-11-25 18:12:48,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:12:48,253 INFO L495 AbstractCegarLoop]: Abstraction has 48304 states and 54904 transitions. [2022-11-25 18:12:48,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 207.33333333333334) internal successors, (622), 3 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:12:48,253 INFO L276 IsEmpty]: Start isEmpty. Operand 48304 states and 54904 transitions. [2022-11-25 18:12:48,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1182 [2022-11-25 18:12:48,269 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:12:48,270 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:12:48,276 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0acca0-d0eb-482b-a384-bc009d7ccdaa/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 18:12:48,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0acca0-d0eb-482b-a384-bc009d7ccdaa/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-25 18:12:48,471 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:12:48,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:12:48,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1509107861, now seen corresponding path program 1 times [2022-11-25 18:12:48,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:12:48,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377419288] [2022-11-25 18:12:48,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:12:48,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:12:48,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:12:51,248 INFO L134 CoverageAnalysis]: Checked inductivity of 1470 backedges. 435 proven. 815 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-11-25 18:12:51,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:12:51,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377419288] [2022-11-25 18:12:51,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377419288] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:12:51,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233448525] [2022-11-25 18:12:51,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:12:51,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:12:51,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0acca0-d0eb-482b-a384-bc009d7ccdaa/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:12:51,251 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0acca0-d0eb-482b-a384-bc009d7ccdaa/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:12:51,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0acca0-d0eb-482b-a384-bc009d7ccdaa/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 18:12:51,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:12:51,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 1409 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 18:12:51,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:12:51,926 INFO L134 CoverageAnalysis]: Checked inductivity of 1470 backedges. 371 proven. 0 refuted. 0 times theorem prover too weak. 1099 trivial. 0 not checked. [2022-11-25 18:12:51,926 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:12:51,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233448525] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:12:51,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:12:51,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-11-25 18:12:51,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129563478] [2022-11-25 18:12:51,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:12:51,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:12:51,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:12:51,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:12:51,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-25 18:12:51,934 INFO L87 Difference]: Start difference. First operand 48304 states and 54904 transitions. Second operand has 3 states, 3 states have (on average 198.33333333333334) internal successors, (595), 3 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:12:55,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:12:55,175 INFO L93 Difference]: Finished difference Result 111786 states and 129013 transitions. [2022-11-25 18:12:55,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:12:55,176 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 198.33333333333334) internal successors, (595), 3 states have internal predecessors, (595), 0 states have call successors, (0), 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 1181 [2022-11-25 18:12:55,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:12:55,376 INFO L225 Difference]: With dead ends: 111786 [2022-11-25 18:12:55,376 INFO L226 Difference]: Without dead ends: 63484 [2022-11-25 18:12:55,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1187 GetRequests, 1181 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-25 18:12:55,407 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 695 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 1862 mSolverCounterSat, 474 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 695 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 2336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 474 IncrementalHoareTripleChecker+Valid, 1862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-25 18:12:55,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [695 Valid, 275 Invalid, 2336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [474 Valid, 1862 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-25 18:12:55,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63484 states. [2022-11-25 18:12:56,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63484 to 63484. [2022-11-25 18:12:56,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63484 states, 63483 states have (on average 1.1366665091441803) internal successors, (72159), 63483 states have internal predecessors, (72159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:12:56,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63484 states to 63484 states and 72159 transitions. [2022-11-25 18:12:56,162 INFO L78 Accepts]: Start accepts. Automaton has 63484 states and 72159 transitions. Word has length 1181 [2022-11-25 18:12:56,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:12:56,164 INFO L495 AbstractCegarLoop]: Abstraction has 63484 states and 72159 transitions. [2022-11-25 18:12:56,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 198.33333333333334) internal successors, (595), 3 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:12:56,164 INFO L276 IsEmpty]: Start isEmpty. Operand 63484 states and 72159 transitions. [2022-11-25 18:12:56,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1241 [2022-11-25 18:12:56,184 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:12:56,185 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-25 18:12:56,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0acca0-d0eb-482b-a384-bc009d7ccdaa/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 18:12:56,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0acca0-d0eb-482b-a384-bc009d7ccdaa/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:12:56,392 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:12:56,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:12:56,393 INFO L85 PathProgramCache]: Analyzing trace with hash -164636011, now seen corresponding path program 1 times [2022-11-25 18:12:56,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:12:56,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172277457] [2022-11-25 18:12:56,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:12:56,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:12:56,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:12:58,661 INFO L134 CoverageAnalysis]: Checked inductivity of 1686 backedges. 376 proven. 0 refuted. 0 times theorem prover too weak. 1310 trivial. 0 not checked. [2022-11-25 18:12:58,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:12:58,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172277457] [2022-11-25 18:12:58,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172277457] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:12:58,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:12:58,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:12:58,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616170585] [2022-11-25 18:12:58,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:12:58,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:12:58,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:12:58,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:12:58,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:12:58,667 INFO L87 Difference]: Start difference. First operand 63484 states and 72159 transitions. Second operand has 3 states, 3 states have (on average 198.66666666666666) internal successors, (596), 3 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:13:02,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:13:02,356 INFO L93 Difference]: Finished difference Result 149046 states and 170609 transitions. [2022-11-25 18:13:02,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:13:02,356 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 198.66666666666666) internal successors, (596), 3 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1240 [2022-11-25 18:13:02,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:13:02,457 INFO L225 Difference]: With dead ends: 149046 [2022-11-25 18:13:02,458 INFO L226 Difference]: Without dead ends: 77284 [2022-11-25 18:13:02,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:13:02,491 INFO L413 NwaCegarLoop]: 935 mSDtfsCounter, 667 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1808 mSolverCounterSat, 571 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 667 SdHoareTripleChecker+Valid, 941 SdHoareTripleChecker+Invalid, 2379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 571 IncrementalHoareTripleChecker+Valid, 1808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-25 18:13:02,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [667 Valid, 941 Invalid, 2379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [571 Valid, 1808 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-25 18:13:02,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77284 states. [2022-11-25 18:13:03,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77284 to 73834. [2022-11-25 18:13:03,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73834 states, 73833 states have (on average 1.0949710833908957) internal successors, (80845), 73833 states have internal predecessors, (80845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:13:03,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73834 states to 73834 states and 80845 transitions. [2022-11-25 18:13:03,726 INFO L78 Accepts]: Start accepts. Automaton has 73834 states and 80845 transitions. Word has length 1240 [2022-11-25 18:13:03,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:13:03,727 INFO L495 AbstractCegarLoop]: Abstraction has 73834 states and 80845 transitions. [2022-11-25 18:13:03,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 198.66666666666666) internal successors, (596), 3 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:13:03,728 INFO L276 IsEmpty]: Start isEmpty. Operand 73834 states and 80845 transitions. [2022-11-25 18:13:03,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1243 [2022-11-25 18:13:03,747 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:13:03,749 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:13:03,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-25 18:13:03,750 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:13:03,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:13:03,750 INFO L85 PathProgramCache]: Analyzing trace with hash 962935002, now seen corresponding path program 1 times [2022-11-25 18:13:03,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:13:03,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391239331] [2022-11-25 18:13:03,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:13:03,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:13:04,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:13:05,858 INFO L134 CoverageAnalysis]: Checked inductivity of 1693 backedges. 301 proven. 189 refuted. 0 times theorem prover too weak. 1203 trivial. 0 not checked. [2022-11-25 18:13:05,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:13:05,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391239331] [2022-11-25 18:13:05,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391239331] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:13:05,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715254306] [2022-11-25 18:13:05,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:13:05,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:13:05,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0acca0-d0eb-482b-a384-bc009d7ccdaa/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:13:05,861 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0acca0-d0eb-482b-a384-bc009d7ccdaa/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:13:05,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0acca0-d0eb-482b-a384-bc009d7ccdaa/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 18:13:06,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:13:06,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 1463 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-25 18:13:06,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:13:09,397 INFO L134 CoverageAnalysis]: Checked inductivity of 1693 backedges. 903 proven. 0 refuted. 0 times theorem prover too weak. 790 trivial. 0 not checked. [2022-11-25 18:13:09,398 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:13:09,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715254306] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:13:09,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:13:09,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2022-11-25 18:13:09,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139169067] [2022-11-25 18:13:09,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:13:09,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:13:09,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:13:09,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:13:09,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-25 18:13:09,403 INFO L87 Difference]: Start difference. First operand 73834 states and 80845 transitions. Second operand has 5 states, 5 states have (on average 147.2) internal successors, (736), 4 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:13:13,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:13:13,673 INFO L93 Difference]: Finished difference Result 150479 states and 164555 transitions. [2022-11-25 18:13:13,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:13:13,673 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 147.2) internal successors, (736), 4 states have internal predecessors, (736), 0 states have call successors, (0), 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 1242 [2022-11-25 18:13:13,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:13:13,747 INFO L225 Difference]: With dead ends: 150479 [2022-11-25 18:13:13,747 INFO L226 Difference]: Without dead ends: 77284 [2022-11-25 18:13:13,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1246 GetRequests, 1240 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-25 18:13:13,768 INFO L413 NwaCegarLoop]: 299 mSDtfsCounter, 969 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 3213 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 969 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 3420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 3213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-25 18:13:13,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [969 Valid, 316 Invalid, 3420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 3213 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-25 18:13:13,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77284 states. [2022-11-25 18:13:14,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77284 to 75214. [2022-11-25 18:13:14,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75214 states, 75213 states have (on average 1.0935875447063672) internal successors, (82252), 75213 states have internal predecessors, (82252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:13:14,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75214 states to 75214 states and 82252 transitions. [2022-11-25 18:13:14,914 INFO L78 Accepts]: Start accepts. Automaton has 75214 states and 82252 transitions. Word has length 1242 [2022-11-25 18:13:14,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:13:14,915 INFO L495 AbstractCegarLoop]: Abstraction has 75214 states and 82252 transitions. [2022-11-25 18:13:14,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 147.2) internal successors, (736), 4 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:13:14,915 INFO L276 IsEmpty]: Start isEmpty. Operand 75214 states and 82252 transitions. [2022-11-25 18:13:14,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1251 [2022-11-25 18:13:14,934 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:13:14,935 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:13:14,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0acca0-d0eb-482b-a384-bc009d7ccdaa/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 18:13:15,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0acca0-d0eb-482b-a384-bc009d7ccdaa/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-25 18:13:15,144 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:13:15,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:13:15,144 INFO L85 PathProgramCache]: Analyzing trace with hash 928551054, now seen corresponding path program 1 times [2022-11-25 18:13:15,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:13:15,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180175015] [2022-11-25 18:13:15,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:13:15,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:13:15,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:13:18,050 INFO L134 CoverageAnalysis]: Checked inductivity of 1700 backedges. 468 proven. 719 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2022-11-25 18:13:18,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:13:18,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180175015] [2022-11-25 18:13:18,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180175015] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:13:18,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617094458] [2022-11-25 18:13:18,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:13:18,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:13:18,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0acca0-d0eb-482b-a384-bc009d7ccdaa/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:13:18,055 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0acca0-d0eb-482b-a384-bc009d7ccdaa/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:13:18,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0acca0-d0eb-482b-a384-bc009d7ccdaa/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 18:13:18,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:13:18,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 1482 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 18:13:18,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:13:18,823 INFO L134 CoverageAnalysis]: Checked inductivity of 1700 backedges. 601 proven. 0 refuted. 0 times theorem prover too weak. 1099 trivial. 0 not checked. [2022-11-25 18:13:18,823 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:13:18,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617094458] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:13:18,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:13:18,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-25 18:13:18,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964001845] [2022-11-25 18:13:18,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:13:18,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:13:18,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:13:18,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:13:18,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:13:18,831 INFO L87 Difference]: Start difference. First operand 75214 states and 82252 transitions. Second operand has 3 states, 3 states have (on average 221.33333333333334) internal successors, (664), 3 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:13:21,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:13:21,848 INFO L93 Difference]: Finished difference Result 171126 states and 187742 transitions. [2022-11-25 18:13:21,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:13:21,849 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 221.33333333333334) internal successors, (664), 3 states have internal predecessors, (664), 0 states have call successors, (0), 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 1250 [2022-11-25 18:13:21,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:13:21,948 INFO L225 Difference]: With dead ends: 171126 [2022-11-25 18:13:21,948 INFO L226 Difference]: Without dead ends: 95224 [2022-11-25 18:13:21,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1255 GetRequests, 1250 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:13:21,986 INFO L413 NwaCegarLoop]: 894 mSDtfsCounter, 595 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1663 mSolverCounterSat, 305 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 595 SdHoareTripleChecker+Valid, 900 SdHoareTripleChecker+Invalid, 1968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 305 IncrementalHoareTripleChecker+Valid, 1663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-25 18:13:21,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [595 Valid, 900 Invalid, 1968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [305 Valid, 1663 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-25 18:13:22,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95224 states. [2022-11-25 18:13:23,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95224 to 92464. [2022-11-25 18:13:23,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92464 states, 92463 states have (on average 1.0890193915403998) internal successors, (100694), 92463 states have internal predecessors, (100694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:13:23,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92464 states to 92464 states and 100694 transitions. [2022-11-25 18:13:23,248 INFO L78 Accepts]: Start accepts. Automaton has 92464 states and 100694 transitions. Word has length 1250 [2022-11-25 18:13:23,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:13:23,249 INFO L495 AbstractCegarLoop]: Abstraction has 92464 states and 100694 transitions. [2022-11-25 18:13:23,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 221.33333333333334) internal successors, (664), 3 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:13:23,249 INFO L276 IsEmpty]: Start isEmpty. Operand 92464 states and 100694 transitions. [2022-11-25 18:13:23,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1258 [2022-11-25 18:13:23,264 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:13:23,265 INFO L195 NwaCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:13:23,273 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0acca0-d0eb-482b-a384-bc009d7ccdaa/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 18:13:23,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0acca0-d0eb-482b-a384-bc009d7ccdaa/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-25 18:13:23,473 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:13:23,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:13:23,474 INFO L85 PathProgramCache]: Analyzing trace with hash 2138275601, now seen corresponding path program 1 times [2022-11-25 18:13:23,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:13:23,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762714210] [2022-11-25 18:13:23,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:13:23,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:13:23,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:13:25,588 INFO L134 CoverageAnalysis]: Checked inductivity of 1553 backedges. 871 proven. 107 refuted. 0 times theorem prover too weak. 575 trivial. 0 not checked. [2022-11-25 18:13:25,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:13:25,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762714210] [2022-11-25 18:13:25,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762714210] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:13:25,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018221401] [2022-11-25 18:13:25,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:13:25,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:13:25,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0acca0-d0eb-482b-a384-bc009d7ccdaa/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:13:25,591 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0acca0-d0eb-482b-a384-bc009d7ccdaa/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:13:25,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0acca0-d0eb-482b-a384-bc009d7ccdaa/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 18:13:26,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:13:26,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 1456 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 18:13:26,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:13:27,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1553 backedges. 863 proven. 115 refuted. 0 times theorem prover too weak. 575 trivial. 0 not checked. [2022-11-25 18:13:27,017 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:13:27,993 INFO L134 CoverageAnalysis]: Checked inductivity of 1553 backedges. 978 proven. 0 refuted. 0 times theorem prover too weak. 575 trivial. 0 not checked. [2022-11-25 18:13:27,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018221401] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-25 18:13:27,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:13:27,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2022-11-25 18:13:27,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430194355] [2022-11-25 18:13:27,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:13:27,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:13:27,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:13:27,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:13:27,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=58, Unknown=0, NotChecked=0, Total=110 [2022-11-25 18:13:27,999 INFO L87 Difference]: Start difference. First operand 92464 states and 100694 transitions. Second operand has 5 states, 5 states have (on average 164.4) internal successors, (822), 5 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:13:32,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:13:32,026 INFO L93 Difference]: Finished difference Result 187686 states and 204603 transitions. [2022-11-25 18:13:32,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:13:32,027 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 164.4) internal successors, (822), 5 states have internal predecessors, (822), 0 states have call successors, (0), 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 1257 [2022-11-25 18:13:32,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:13:32,126 INFO L225 Difference]: With dead ends: 187686 [2022-11-25 18:13:32,126 INFO L226 Difference]: Without dead ends: 95224 [2022-11-25 18:13:32,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2517 GetRequests, 2508 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=58, Unknown=0, NotChecked=0, Total=110 [2022-11-25 18:13:32,165 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 1766 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2050 mSolverCounterSat, 620 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1766 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 2670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 620 IncrementalHoareTripleChecker+Valid, 2050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-25 18:13:32,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1766 Valid, 14 Invalid, 2670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [620 Valid, 2050 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-25 18:13:32,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95224 states. [2022-11-25 18:13:33,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95224 to 91084. [2022-11-25 18:13:33,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91084 states, 91083 states have (on average 1.0850323331466905) internal successors, (98828), 91083 states have internal predecessors, (98828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:13:33,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91084 states to 91084 states and 98828 transitions. [2022-11-25 18:13:33,708 INFO L78 Accepts]: Start accepts. Automaton has 91084 states and 98828 transitions. Word has length 1257 [2022-11-25 18:13:33,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:13:33,711 INFO L495 AbstractCegarLoop]: Abstraction has 91084 states and 98828 transitions. [2022-11-25 18:13:33,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 164.4) internal successors, (822), 5 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:13:33,711 INFO L276 IsEmpty]: Start isEmpty. Operand 91084 states and 98828 transitions. [2022-11-25 18:13:33,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1297 [2022-11-25 18:13:33,755 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:13:33,756 INFO L195 NwaCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:13:33,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0acca0-d0eb-482b-a384-bc009d7ccdaa/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-25 18:13:33,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0acca0-d0eb-482b-a384-bc009d7ccdaa/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-25 18:13:33,964 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:13:33,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:13:33,965 INFO L85 PathProgramCache]: Analyzing trace with hash -321539557, now seen corresponding path program 1 times [2022-11-25 18:13:33,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:13:33,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315634674] [2022-11-25 18:13:33,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:13:33,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:13:34,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:13:38,504 INFO L134 CoverageAnalysis]: Checked inductivity of 1631 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 1592 trivial. 0 not checked. [2022-11-25 18:13:38,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:13:38,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315634674] [2022-11-25 18:13:38,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315634674] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:13:38,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:13:38,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:13:38,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624950201] [2022-11-25 18:13:38,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:13:38,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:13:38,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:13:38,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:13:38,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:13:38,511 INFO L87 Difference]: Start difference. First operand 91084 states and 98828 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) [2022-11-25 18:13:41,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:13:41,695 INFO L93 Difference]: Finished difference Result 181476 states and 196963 transitions. [2022-11-25 18:13:41,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:13:41,696 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 1296 [2022-11-25 18:13:41,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:13:42,015 INFO L225 Difference]: With dead ends: 181476 [2022-11-25 18:13:42,015 INFO L226 Difference]: Without dead ends: 91084 [2022-11-25 18:13:42,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:13:42,046 INFO L413 NwaCegarLoop]: 746 mSDtfsCounter, 787 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1705 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 1868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 1705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-25 18:13:42,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [787 Valid, 753 Invalid, 1868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 1705 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-25 18:13:42,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91084 states. [2022-11-25 18:13:43,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91084 to 91084. [2022-11-25 18:13:43,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91084 states, 91083 states have (on average 1.0811457681455376) internal successors, (98474), 91083 states have internal predecessors, (98474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:13:43,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91084 states to 91084 states and 98474 transitions. [2022-11-25 18:13:43,203 INFO L78 Accepts]: Start accepts. Automaton has 91084 states and 98474 transitions. Word has length 1296 [2022-11-25 18:13:43,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:13:43,204 INFO L495 AbstractCegarLoop]: Abstraction has 91084 states and 98474 transitions. [2022-11-25 18:13:43,205 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) [2022-11-25 18:13:43,205 INFO L276 IsEmpty]: Start isEmpty. Operand 91084 states and 98474 transitions. [2022-11-25 18:13:43,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1337 [2022-11-25 18:13:43,223 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:13:43,224 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:13:43,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-25 18:13:43,224 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:13:43,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:13:43,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1787462448, now seen corresponding path program 1 times [2022-11-25 18:13:43,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:13:43,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196423037] [2022-11-25 18:13:43,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:13:43,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:13:43,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:13:46,080 INFO L134 CoverageAnalysis]: Checked inductivity of 2452 backedges. 830 proven. 1123 refuted. 0 times theorem prover too weak. 499 trivial. 0 not checked. [2022-11-25 18:13:46,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:13:46,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196423037] [2022-11-25 18:13:46,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196423037] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:13:46,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255687640] [2022-11-25 18:13:46,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:13:46,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:13:46,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0acca0-d0eb-482b-a384-bc009d7ccdaa/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:13:46,083 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0acca0-d0eb-482b-a384-bc009d7ccdaa/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:13:46,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0acca0-d0eb-482b-a384-bc009d7ccdaa/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 18:13:46,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:13:46,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 1616 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 18:13:46,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:13:46,897 INFO L134 CoverageAnalysis]: Checked inductivity of 2452 backedges. 937 proven. 0 refuted. 0 times theorem prover too weak. 1515 trivial. 0 not checked. [2022-11-25 18:13:46,897 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:13:46,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255687640] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:13:46,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:13:46,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-11-25 18:13:46,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211650805] [2022-11-25 18:13:46,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:13:46,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:13:46,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:13:46,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:13:46,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-25 18:13:46,902 INFO L87 Difference]: Start difference. First operand 91084 states and 98474 transitions. Second operand has 3 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:13:49,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:13:49,502 INFO L93 Difference]: Finished difference Result 180786 states and 195545 transitions. [2022-11-25 18:13:49,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:13:49,503 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 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 1336 [2022-11-25 18:13:49,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:13:49,588 INFO L225 Difference]: With dead ends: 180786 [2022-11-25 18:13:49,588 INFO L226 Difference]: Without dead ends: 90394 [2022-11-25 18:13:49,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1342 GetRequests, 1336 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-25 18:13:49,628 INFO L413 NwaCegarLoop]: 895 mSDtfsCounter, 679 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1629 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 679 SdHoareTripleChecker+Valid, 902 SdHoareTripleChecker+Invalid, 1835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 1629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-25 18:13:49,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [679 Valid, 902 Invalid, 1835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 1629 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-25 18:13:49,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90394 states. [2022-11-25 18:13:50,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90394 to 80044. [2022-11-25 18:13:50,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80044 states, 80043 states have (on average 1.0531464337918368) internal successors, (84297), 80043 states have internal predecessors, (84297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:13:50,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80044 states to 80044 states and 84297 transitions. [2022-11-25 18:13:50,937 INFO L78 Accepts]: Start accepts. Automaton has 80044 states and 84297 transitions. Word has length 1336 [2022-11-25 18:13:50,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:13:50,938 INFO L495 AbstractCegarLoop]: Abstraction has 80044 states and 84297 transitions. [2022-11-25 18:13:50,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:13:50,939 INFO L276 IsEmpty]: Start isEmpty. Operand 80044 states and 84297 transitions. [2022-11-25 18:13:50,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1356 [2022-11-25 18:13:50,956 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:13:50,957 INFO L195 NwaCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:13:50,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0acca0-d0eb-482b-a384-bc009d7ccdaa/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-25 18:13:51,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf0acca0-d0eb-482b-a384-bc009d7ccdaa/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:13:51,158 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:13:51,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:13:51,158 INFO L85 PathProgramCache]: Analyzing trace with hash 381800583, now seen corresponding path program 1 times [2022-11-25 18:13:51,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:13:51,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922580329] [2022-11-25 18:13:51,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:13:51,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:13:51,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:13:52,513 INFO L134 CoverageAnalysis]: Checked inductivity of 1731 backedges. 432 proven. 0 refuted. 0 times theorem prover too weak. 1299 trivial. 0 not checked. [2022-11-25 18:13:52,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:13:52,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922580329] [2022-11-25 18:13:52,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922580329] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:13:52,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:13:52,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:13:52,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874295776] [2022-11-25 18:13:52,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:13:52,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:13:52,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:13:52,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:13:52,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:13:52,517 INFO L87 Difference]: Start difference. First operand 80044 states and 84297 transitions. Second operand has 3 states, 3 states have (on average 209.33333333333334) internal successors, (628), 3 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:13:55,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:13:55,564 INFO L93 Difference]: Finished difference Result 174578 states and 183875 transitions. [2022-11-25 18:13:55,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:13:55,565 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 209.33333333333334) internal successors, (628), 3 states have internal predecessors, (628), 0 states have call successors, (0), 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 1355 [2022-11-25 18:13:55,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:13:55,662 INFO L225 Difference]: With dead ends: 174578 [2022-11-25 18:13:55,662 INFO L226 Difference]: Without dead ends: 95226 [2022-11-25 18:13:55,685 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 [2022-11-25 18:13:55,686 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 627 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1817 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 2037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 1817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-25 18:13:55,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [627 Valid, 241 Invalid, 2037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 1817 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-25 18:13:55,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95226 states. [2022-11-25 18:13:56,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95226 to 86254. [2022-11-25 18:13:56,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86254 states, 86253 states have (on average 1.0530184457352207) internal successors, (90826), 86253 states have internal predecessors, (90826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:13:57,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86254 states to 86254 states and 90826 transitions. [2022-11-25 18:13:57,036 INFO L78 Accepts]: Start accepts. Automaton has 86254 states and 90826 transitions. Word has length 1355 [2022-11-25 18:13:57,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:13:57,037 INFO L495 AbstractCegarLoop]: Abstraction has 86254 states and 90826 transitions. [2022-11-25 18:13:57,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 209.33333333333334) internal successors, (628), 3 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:13:57,037 INFO L276 IsEmpty]: Start isEmpty. Operand 86254 states and 90826 transitions. [2022-11-25 18:13:57,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1360 [2022-11-25 18:13:57,052 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:13:57,052 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-25 18:13:57,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-25 18:13:57,053 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:13:57,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:13:57,053 INFO L85 PathProgramCache]: Analyzing trace with hash 701912596, now seen corresponding path program 1 times [2022-11-25 18:13:57,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:13:57,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403389529] [2022-11-25 18:13:57,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:13:57,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:13:57,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:13:58,254 INFO L134 CoverageAnalysis]: Checked inductivity of 2534 backedges. 1085 proven. 0 refuted. 0 times theorem prover too weak. 1449 trivial. 0 not checked. [2022-11-25 18:13:58,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:13:58,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403389529] [2022-11-25 18:13:58,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403389529] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:13:58,255 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:13:58,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:13:58,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663431500] [2022-11-25 18:13:58,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:13:58,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:13:58,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:13:58,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:13:58,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:13:58,260 INFO L87 Difference]: Start difference. First operand 86254 states and 90826 transitions. Second operand has 3 states, 3 states have (on average 232.66666666666666) internal successors, (698), 3 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:14:00,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:14:00,703 INFO L93 Difference]: Finished difference Result 188376 states and 198369 transitions. [2022-11-25 18:14:00,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:14:00,704 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 232.66666666666666) internal successors, (698), 3 states have internal predecessors, (698), 0 states have call successors, (0), 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 1359 [2022-11-25 18:14:00,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:14:00,808 INFO L225 Difference]: With dead ends: 188376 [2022-11-25 18:14:00,808 INFO L226 Difference]: Without dead ends: 102814 [2022-11-25 18:14:01,133 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 [2022-11-25 18:14:01,135 INFO L413 NwaCegarLoop]: 971 mSDtfsCounter, 624 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1683 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 977 SdHoareTripleChecker+Invalid, 1834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 1683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-25 18:14:01,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [624 Valid, 977 Invalid, 1834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 1683 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-25 18:14:01,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102814 states. [2022-11-25 18:14:02,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102814 to 98674. [2022-11-25 18:14:02,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98674 states, 98673 states have (on average 1.049142115877697) internal successors, (103522), 98673 states have internal predecessors, (103522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:14:02,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98674 states to 98674 states and 103522 transitions. [2022-11-25 18:14:02,366 INFO L78 Accepts]: Start accepts. Automaton has 98674 states and 103522 transitions. Word has length 1359 [2022-11-25 18:14:02,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:14:02,367 INFO L495 AbstractCegarLoop]: Abstraction has 98674 states and 103522 transitions. [2022-11-25 18:14:02,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 232.66666666666666) internal successors, (698), 3 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:14:02,367 INFO L276 IsEmpty]: Start isEmpty. Operand 98674 states and 103522 transitions. [2022-11-25 18:14:02,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1371 [2022-11-25 18:14:02,396 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:14:02,396 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-25 18:14:02,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-25 18:14:02,397 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:14:02,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:14:02,397 INFO L85 PathProgramCache]: Analyzing trace with hash -117302160, now seen corresponding path program 1 times [2022-11-25 18:14:02,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:14:02,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536086718] [2022-11-25 18:14:02,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:14:02,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:14:02,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:14:03,649 INFO L134 CoverageAnalysis]: Checked inductivity of 2008 backedges. 416 proven. 0 refuted. 0 times theorem prover too weak. 1592 trivial. 0 not checked. [2022-11-25 18:14:03,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:14:03,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536086718] [2022-11-25 18:14:03,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536086718] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:14:03,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:14:03,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:14:03,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166851572] [2022-11-25 18:14:03,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:14:03,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:14:03,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:14:03,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:14:03,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:14:03,653 INFO L87 Difference]: Start difference. First operand 98674 states and 103522 transitions. Second operand has 3 states, 3 states have (on average 201.33333333333334) internal successors, (604), 3 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:14:06,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:14:06,118 INFO L93 Difference]: Finished difference Result 196656 states and 206318 transitions. [2022-11-25 18:14:06,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:14:06,121 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 201.33333333333334) internal successors, (604), 3 states have internal predecessors, (604), 0 states have call successors, (0), 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 1370 [2022-11-25 18:14:06,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:14:06,213 INFO L225 Difference]: With dead ends: 196656 [2022-11-25 18:14:06,213 INFO L226 Difference]: Without dead ends: 97984 [2022-11-25 18:14:06,252 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 [2022-11-25 18:14:06,253 INFO L413 NwaCegarLoop]: 937 mSDtfsCounter, 634 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1674 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 634 SdHoareTripleChecker+Valid, 944 SdHoareTripleChecker+Invalid, 1802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 1674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-25 18:14:06,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [634 Valid, 944 Invalid, 1802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 1674 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-25 18:14:06,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97984 states.