./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.7_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1af051-e8d4-4441-9206-a4f9f502125e/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1af051-e8d4-4441-9206-a4f9f502125e/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1af051-e8d4-4441-9206-a4f9f502125e/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1af051-e8d4-4441-9206-a4f9f502125e/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.7_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1af051-e8d4-4441-9206-a4f9f502125e/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1af051-e8d4-4441-9206-a4f9f502125e/bin/uautomizer-IVEQpCNsaX --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 596f65ba5fc98de39aedf2c9c49963dd6a8ddc81196892688e9bbe3427474102 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 08:33:39,907 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 08:33:39,910 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 08:33:39,967 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 08:33:39,968 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 08:33:39,971 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 08:33:39,973 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 08:33:39,977 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 08:33:39,980 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 08:33:39,985 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 08:33:39,987 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 08:33:39,988 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 08:33:39,989 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 08:33:39,992 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 08:33:39,994 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 08:33:39,999 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 08:33:40,001 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 08:33:40,002 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 08:33:40,004 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 08:33:40,012 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 08:33:40,014 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 08:33:40,016 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 08:33:40,019 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 08:33:40,020 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 08:33:40,029 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 08:33:40,029 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 08:33:40,030 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 08:33:40,032 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 08:33:40,032 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 08:33:40,034 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 08:33:40,034 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 08:33:40,035 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 08:33:40,037 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 08:33:40,038 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 08:33:40,040 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 08:33:40,040 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 08:33:40,041 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 08:33:40,041 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 08:33:40,041 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 08:33:40,042 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 08:33:40,043 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 08:33:40,044 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1af051-e8d4-4441-9206-a4f9f502125e/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-09 08:33:40,088 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 08:33:40,088 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 08:33:40,089 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 08:33:40,089 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 08:33:40,097 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 08:33:40,097 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 08:33:40,097 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 08:33:40,098 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 08:33:40,098 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 08:33:40,098 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 08:33:40,099 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 08:33:40,099 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 08:33:40,100 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 08:33:40,100 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 08:33:40,100 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 08:33:40,100 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 08:33:40,101 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 08:33:40,101 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 08:33:40,101 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 08:33:40,101 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 08:33:40,102 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 08:33:40,102 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 08:33:40,102 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:33:40,102 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 08:33:40,103 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 08:33:40,103 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 08:33:40,103 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 08:33:40,103 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 08:33:40,104 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 08:33:40,105 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 08:33:40,105 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 08:33:40,106 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 08:33:40,106 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1af051-e8d4-4441-9206-a4f9f502125e/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1af051-e8d4-4441-9206-a4f9f502125e/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 596f65ba5fc98de39aedf2c9c49963dd6a8ddc81196892688e9bbe3427474102 [2021-11-09 08:33:40,377 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 08:33:40,397 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 08:33:40,400 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 08:33:40,401 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 08:33:40,402 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 08:33:40,403 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1af051-e8d4-4441-9206-a4f9f502125e/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/combinations/pals_lcr.7_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c [2021-11-09 08:33:40,476 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1af051-e8d4-4441-9206-a4f9f502125e/bin/uautomizer-IVEQpCNsaX/data/2202fa1f1/a02cfcae717b4b9a9e3a72b18b2b6f66/FLAGb6cb57f65 [2021-11-09 08:33:41,372 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 08:33:41,373 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1af051-e8d4-4441-9206-a4f9f502125e/sv-benchmarks/c/combinations/pals_lcr.7_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c [2021-11-09 08:33:41,446 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1af051-e8d4-4441-9206-a4f9f502125e/bin/uautomizer-IVEQpCNsaX/data/2202fa1f1/a02cfcae717b4b9a9e3a72b18b2b6f66/FLAGb6cb57f65 [2021-11-09 08:33:41,876 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1af051-e8d4-4441-9206-a4f9f502125e/bin/uautomizer-IVEQpCNsaX/data/2202fa1f1/a02cfcae717b4b9a9e3a72b18b2b6f66 [2021-11-09 08:33:41,879 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 08:33:41,880 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 08:33:41,882 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 08:33:41,882 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 08:33:41,892 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 08:33:41,893 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:33:41" (1/1) ... [2021-11-09 08:33:41,894 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fad68f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:33:41, skipping insertion in model container [2021-11-09 08:33:41,895 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:33:41" (1/1) ... [2021-11-09 08:33:41,901 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 08:33:42,066 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 08:33:42,547 WARN L228 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_2b1af051-e8d4-4441-9206-a4f9f502125e/sv-benchmarks/c/combinations/pals_lcr.7_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c[20646,20659] [2021-11-09 08:33:42,607 WARN L228 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_2b1af051-e8d4-4441-9206-a4f9f502125e/sv-benchmarks/c/combinations/pals_lcr.7_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c[25958,25971] [2021-11-09 08:33:43,535 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:33:43,549 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 08:33:43,614 WARN L228 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_2b1af051-e8d4-4441-9206-a4f9f502125e/sv-benchmarks/c/combinations/pals_lcr.7_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c[20646,20659] [2021-11-09 08:33:43,630 WARN L228 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_2b1af051-e8d4-4441-9206-a4f9f502125e/sv-benchmarks/c/combinations/pals_lcr.7_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c[25958,25971] [2021-11-09 08:33:44,180 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:33:44,256 INFO L208 MainTranslator]: Completed translation [2021-11-09 08:33:44,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:33:44 WrapperNode [2021-11-09 08:33:44,257 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 08:33:44,259 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 08:33:44,259 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 08:33:44,260 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 08:33:44,267 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:33:44" (1/1) ... [2021-11-09 08:33:44,327 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:33:44" (1/1) ... [2021-11-09 08:33:44,711 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 08:33:44,712 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 08:33:44,712 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 08:33:44,712 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 08:33:44,721 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:33:44" (1/1) ... [2021-11-09 08:33:44,721 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:33:44" (1/1) ... [2021-11-09 08:33:44,762 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:33:44" (1/1) ... [2021-11-09 08:33:44,763 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:33:44" (1/1) ... [2021-11-09 08:33:45,032 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:33:44" (1/1) ... [2021-11-09 08:33:45,068 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:33:44" (1/1) ... [2021-11-09 08:33:45,127 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:33:44" (1/1) ... [2021-11-09 08:33:45,296 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 08:33:45,297 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 08:33:45,298 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 08:33:45,299 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 08:33:45,300 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:33:44" (1/1) ... [2021-11-09 08:33:45,307 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:33:45,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1af051-e8d4-4441-9206-a4f9f502125e/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:33:45,384 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1af051-e8d4-4441-9206-a4f9f502125e/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 08:33:45,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1af051-e8d4-4441-9206-a4f9f502125e/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 08:33:45,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 08:33:45,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 08:33:45,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 08:33:45,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 08:33:50,440 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 08:33:50,440 INFO L299 CfgBuilder]: Removed 40 assume(true) statements. [2021-11-09 08:33:50,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:33:50 BoogieIcfgContainer [2021-11-09 08:33:50,454 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 08:33:50,456 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 08:33:50,457 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 08:33:50,460 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 08:33:50,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 08:33:41" (1/3) ... [2021-11-09 08:33:50,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@454e5b93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:33:50, skipping insertion in model container [2021-11-09 08:33:50,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:33:44" (2/3) ... [2021-11-09 08:33:50,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@454e5b93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:33:50, skipping insertion in model container [2021-11-09 08:33:50,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:33:50" (3/3) ... [2021-11-09 08:33:50,470 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.7_overflow.ufo.UNBOUNDED.pals+Problem12_label01.c [2021-11-09 08:33:50,476 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 08:33:50,476 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-09 08:33:50,532 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 08:33:50,538 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-09 08:33:50,538 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-09 08:33:50,629 INFO L276 IsEmpty]: Start isEmpty. Operand has 943 states, 940 states have (on average 1.898936170212766) internal successors, (1785), 942 states have internal predecessors, (1785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:33:50,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-09 08:33:50,649 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:33:50,649 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:33:50,650 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:33:50,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:33:50,666 INFO L85 PathProgramCache]: Analyzing trace with hash 720070723, now seen corresponding path program 1 times [2021-11-09 08:33:50,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:33:50,676 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477778365] [2021-11-09 08:33:50,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:33:50,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:33:50,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:33:51,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:33:51,019 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:33:51,020 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477778365] [2021-11-09 08:33:51,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477778365] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:33:51,021 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:33:51,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-09 08:33:51,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901674159] [2021-11-09 08:33:51,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-09 08:33:51,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:33:51,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-09 08:33:51,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 08:33:51,054 INFO L87 Difference]: Start difference. First operand has 943 states, 940 states have (on average 1.898936170212766) internal successors, (1785), 942 states have internal predecessors, (1785), 0 states have call successors, (0), 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 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:33:51,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:33:51,148 INFO L93 Difference]: Finished difference Result 1828 states and 3460 transitions. [2021-11-09 08:33:51,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-09 08:33:51,150 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2021-11-09 08:33:51,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:33:51,177 INFO L225 Difference]: With dead ends: 1828 [2021-11-09 08:33:51,177 INFO L226 Difference]: Without dead ends: 877 [2021-11-09 08:33:51,186 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 08:33:51,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 877 states. [2021-11-09 08:33:51,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 877 to 877. [2021-11-09 08:33:51,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 877 states, 875 states have (on average 1.888) internal successors, (1652), 876 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:33:51,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1652 transitions. [2021-11-09 08:33:51,291 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1652 transitions. Word has length 42 [2021-11-09 08:33:51,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:33:51,292 INFO L470 AbstractCegarLoop]: Abstraction has 877 states and 1652 transitions. [2021-11-09 08:33:51,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:33:51,292 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1652 transitions. [2021-11-09 08:33:51,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-09 08:33:51,297 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:33:51,297 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:33:51,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 08:33:51,298 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:33:51,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:33:51,299 INFO L85 PathProgramCache]: Analyzing trace with hash 325703937, now seen corresponding path program 1 times [2021-11-09 08:33:51,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:33:51,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172990543] [2021-11-09 08:33:51,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:33:51,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:33:51,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:33:51,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:33:51,464 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:33:51,464 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172990543] [2021-11-09 08:33:51,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172990543] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:33:51,465 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:33:51,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 08:33:51,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758519175] [2021-11-09 08:33:51,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 08:33:51,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:33:51,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 08:33:51,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:33:51,472 INFO L87 Difference]: Start difference. First operand 877 states and 1652 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:33:51,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:33:51,624 INFO L93 Difference]: Finished difference Result 948 states and 1763 transitions. [2021-11-09 08:33:51,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 08:33:51,624 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2021-11-09 08:33:51,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:33:51,630 INFO L225 Difference]: With dead ends: 948 [2021-11-09 08:33:51,631 INFO L226 Difference]: Without dead ends: 877 [2021-11-09 08:33:51,632 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-09 08:33:51,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 877 states. [2021-11-09 08:33:51,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 877 to 877. [2021-11-09 08:33:51,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 877 states, 875 states have (on average 1.830857142857143) internal successors, (1602), 876 states have internal predecessors, (1602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:33:51,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1602 transitions. [2021-11-09 08:33:51,682 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1602 transitions. Word has length 42 [2021-11-09 08:33:51,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:33:51,683 INFO L470 AbstractCegarLoop]: Abstraction has 877 states and 1602 transitions. [2021-11-09 08:33:51,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:33:51,683 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1602 transitions. [2021-11-09 08:33:51,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-09 08:33:51,693 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:33:51,693 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:33:51,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-09 08:33:51,694 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:33:51,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:33:51,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1144208085, now seen corresponding path program 1 times [2021-11-09 08:33:51,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:33:51,695 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000572446] [2021-11-09 08:33:51,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:33:51,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:33:51,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:33:51,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:33:51,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:33:51,847 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000572446] [2021-11-09 08:33:51,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000572446] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:33:51,847 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:33:51,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-09 08:33:51,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940403005] [2021-11-09 08:33:51,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:33:51,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:33:51,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:33:51,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:33:51,850 INFO L87 Difference]: Start difference. First operand 877 states and 1602 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:33:56,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:33:56,159 INFO L93 Difference]: Finished difference Result 2381 states and 4475 transitions. [2021-11-09 08:33:56,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:33:56,160 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-11-09 08:33:56,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:33:56,173 INFO L225 Difference]: With dead ends: 2381 [2021-11-09 08:33:56,173 INFO L226 Difference]: Without dead ends: 1628 [2021-11-09 08:33:56,175 INFO L786 BasicCegarLoop]: 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 [2021-11-09 08:33:56,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1628 states. [2021-11-09 08:33:56,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1628 to 1628. [2021-11-09 08:33:56,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1628 states, 1626 states have (on average 1.8308733087330873) internal successors, (2977), 1627 states have internal predecessors, (2977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:33:56,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1628 states to 1628 states and 2977 transitions. [2021-11-09 08:33:56,290 INFO L78 Accepts]: Start accepts. Automaton has 1628 states and 2977 transitions. Word has length 48 [2021-11-09 08:33:56,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:33:56,291 INFO L470 AbstractCegarLoop]: Abstraction has 1628 states and 2977 transitions. [2021-11-09 08:33:56,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:33:56,292 INFO L276 IsEmpty]: Start isEmpty. Operand 1628 states and 2977 transitions. [2021-11-09 08:33:56,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-09 08:33:56,295 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:33:56,295 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:33:56,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-09 08:33:56,296 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:33:56,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:33:56,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1207745120, now seen corresponding path program 1 times [2021-11-09 08:33:56,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:33:56,298 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105410910] [2021-11-09 08:33:56,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:33:56,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:33:56,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:33:56,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:33:56,433 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:33:56,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105410910] [2021-11-09 08:33:56,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105410910] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:33:56,434 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:33:56,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:33:56,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933445236] [2021-11-09 08:33:56,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:33:56,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:33:56,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:33:56,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:33:56,437 INFO L87 Difference]: Start difference. First operand 1628 states and 2977 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:33:56,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:33:56,477 INFO L93 Difference]: Finished difference Result 1756 states and 3181 transitions. [2021-11-09 08:33:56,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:33:56,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2021-11-09 08:33:56,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:33:56,489 INFO L225 Difference]: With dead ends: 1756 [2021-11-09 08:33:56,489 INFO L226 Difference]: Without dead ends: 1689 [2021-11-09 08:33:56,490 INFO L786 BasicCegarLoop]: 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 [2021-11-09 08:33:56,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1689 states. [2021-11-09 08:33:56,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1689 to 1687. [2021-11-09 08:33:56,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1687 states, 1685 states have (on average 1.8231454005934717) internal successors, (3072), 1686 states have internal predecessors, (3072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:33:56,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1687 states to 1687 states and 3072 transitions. [2021-11-09 08:33:56,538 INFO L78 Accepts]: Start accepts. Automaton has 1687 states and 3072 transitions. Word has length 91 [2021-11-09 08:33:56,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:33:56,539 INFO L470 AbstractCegarLoop]: Abstraction has 1687 states and 3072 transitions. [2021-11-09 08:33:56,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:33:56,540 INFO L276 IsEmpty]: Start isEmpty. Operand 1687 states and 3072 transitions. [2021-11-09 08:33:56,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-09 08:33:56,541 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:33:56,541 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:33:56,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-09 08:33:56,542 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:33:56,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:33:56,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1564953708, now seen corresponding path program 1 times [2021-11-09 08:33:56,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:33:56,543 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593289417] [2021-11-09 08:33:56,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:33:56,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:33:56,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:33:56,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:33:56,612 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:33:56,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593289417] [2021-11-09 08:33:56,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593289417] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:33:56,612 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:33:56,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:33:56,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861025430] [2021-11-09 08:33:56,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:33:56,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:33:56,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:33:56,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:33:56,615 INFO L87 Difference]: Start difference. First operand 1687 states and 3072 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:33:56,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:33:56,657 INFO L93 Difference]: Finished difference Result 1927 states and 3456 transitions. [2021-11-09 08:33:56,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:33:56,657 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2021-11-09 08:33:56,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:33:56,669 INFO L225 Difference]: With dead ends: 1927 [2021-11-09 08:33:56,670 INFO L226 Difference]: Without dead ends: 1801 [2021-11-09 08:33:56,671 INFO L786 BasicCegarLoop]: 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 [2021-11-09 08:33:56,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1801 states. [2021-11-09 08:33:56,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1801 to 1799. [2021-11-09 08:33:56,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1799 states, 1797 states have (on average 1.8091263216471898) internal successors, (3251), 1798 states have internal predecessors, (3251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:33:56,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1799 states to 1799 states and 3251 transitions. [2021-11-09 08:33:56,723 INFO L78 Accepts]: Start accepts. Automaton has 1799 states and 3251 transitions. Word has length 91 [2021-11-09 08:33:56,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:33:56,724 INFO L470 AbstractCegarLoop]: Abstraction has 1799 states and 3251 transitions. [2021-11-09 08:33:56,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:33:56,724 INFO L276 IsEmpty]: Start isEmpty. Operand 1799 states and 3251 transitions. [2021-11-09 08:33:56,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-09 08:33:56,725 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:33:56,726 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:33:56,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-09 08:33:56,726 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:33:56,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:33:56,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1479108296, now seen corresponding path program 1 times [2021-11-09 08:33:56,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:33:56,727 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516171663] [2021-11-09 08:33:56,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:33:56,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:33:56,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:33:56,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:33:56,806 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:33:56,807 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516171663] [2021-11-09 08:33:56,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516171663] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:33:56,807 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:33:56,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:33:56,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062165233] [2021-11-09 08:33:56,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:33:56,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:33:56,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:33:56,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:33:56,810 INFO L87 Difference]: Start difference. First operand 1799 states and 3251 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:33:56,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:33:56,865 INFO L93 Difference]: Finished difference Result 2251 states and 3973 transitions. [2021-11-09 08:33:56,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:33:56,874 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2021-11-09 08:33:56,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:33:56,890 INFO L225 Difference]: With dead ends: 2251 [2021-11-09 08:33:56,890 INFO L226 Difference]: Without dead ends: 2013 [2021-11-09 08:33:56,891 INFO L786 BasicCegarLoop]: 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 [2021-11-09 08:33:56,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2013 states. [2021-11-09 08:33:56,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2013 to 2011. [2021-11-09 08:33:56,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2011 states, 2009 states have (on average 1.785465405674465) internal successors, (3587), 2010 states have internal predecessors, (3587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:33:56,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2011 states to 2011 states and 3587 transitions. [2021-11-09 08:33:56,955 INFO L78 Accepts]: Start accepts. Automaton has 2011 states and 3587 transitions. Word has length 91 [2021-11-09 08:33:56,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:33:56,956 INFO L470 AbstractCegarLoop]: Abstraction has 2011 states and 3587 transitions. [2021-11-09 08:33:56,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:33:56,957 INFO L276 IsEmpty]: Start isEmpty. Operand 2011 states and 3587 transitions. [2021-11-09 08:33:56,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-09 08:33:56,964 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:33:56,964 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:33:56,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-09 08:33:56,964 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:33:56,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:33:56,965 INFO L85 PathProgramCache]: Analyzing trace with hash 733525566, now seen corresponding path program 1 times [2021-11-09 08:33:56,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:33:56,967 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032521423] [2021-11-09 08:33:56,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:33:56,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:33:56,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:33:57,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:33:57,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:33:57,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032521423] [2021-11-09 08:33:57,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032521423] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:33:57,028 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:33:57,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:33:57,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805337987] [2021-11-09 08:33:57,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:33:57,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:33:57,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:33:57,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:33:57,030 INFO L87 Difference]: Start difference. First operand 2011 states and 3587 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:33:57,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:33:57,086 INFO L93 Difference]: Finished difference Result 2863 states and 4941 transitions. [2021-11-09 08:33:57,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:33:57,087 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2021-11-09 08:33:57,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:33:57,102 INFO L225 Difference]: With dead ends: 2863 [2021-11-09 08:33:57,102 INFO L226 Difference]: Without dead ends: 2413 [2021-11-09 08:33:57,106 INFO L786 BasicCegarLoop]: 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 [2021-11-09 08:33:57,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2413 states. [2021-11-09 08:33:57,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2413 to 2411. [2021-11-09 08:33:57,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2411 states, 2409 states have (on average 1.7496886674968868) internal successors, (4215), 2410 states have internal predecessors, (4215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:33:57,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2411 states to 2411 states and 4215 transitions. [2021-11-09 08:33:57,180 INFO L78 Accepts]: Start accepts. Automaton has 2411 states and 4215 transitions. Word has length 91 [2021-11-09 08:33:57,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:33:57,180 INFO L470 AbstractCegarLoop]: Abstraction has 2411 states and 4215 transitions. [2021-11-09 08:33:57,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:33:57,181 INFO L276 IsEmpty]: Start isEmpty. Operand 2411 states and 4215 transitions. [2021-11-09 08:33:57,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-09 08:33:57,182 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:33:57,182 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:33:57,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-09 08:33:57,182 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:33:57,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:33:57,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1206505292, now seen corresponding path program 1 times [2021-11-09 08:33:57,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:33:57,183 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883917566] [2021-11-09 08:33:57,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:33:57,184 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:33:57,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:33:57,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:33:57,252 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:33:57,253 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883917566] [2021-11-09 08:33:57,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883917566] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:33:57,253 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:33:57,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:33:57,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73343630] [2021-11-09 08:33:57,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:33:57,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:33:57,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:33:57,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:33:57,255 INFO L87 Difference]: Start difference. First operand 2411 states and 4215 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:33:57,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:33:57,332 INFO L93 Difference]: Finished difference Result 4015 states and 6745 transitions. [2021-11-09 08:33:57,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:33:57,333 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2021-11-09 08:33:57,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:33:57,352 INFO L225 Difference]: With dead ends: 4015 [2021-11-09 08:33:57,352 INFO L226 Difference]: Without dead ends: 3165 [2021-11-09 08:33:57,355 INFO L786 BasicCegarLoop]: 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 [2021-11-09 08:33:57,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3165 states. [2021-11-09 08:33:57,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3165 to 3163. [2021-11-09 08:33:57,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3163 states, 3161 states have (on average 1.7029421069281874) internal successors, (5383), 3162 states have internal predecessors, (5383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:33:57,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3163 states to 3163 states and 5383 transitions. [2021-11-09 08:33:57,462 INFO L78 Accepts]: Start accepts. Automaton has 3163 states and 5383 transitions. Word has length 91 [2021-11-09 08:33:57,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:33:57,462 INFO L470 AbstractCegarLoop]: Abstraction has 3163 states and 5383 transitions. [2021-11-09 08:33:57,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:33:57,463 INFO L276 IsEmpty]: Start isEmpty. Operand 3163 states and 5383 transitions. [2021-11-09 08:33:57,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-09 08:33:57,464 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:33:57,464 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:33:57,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-09 08:33:57,465 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:33:57,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:33:57,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1494177322, now seen corresponding path program 1 times [2021-11-09 08:33:57,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:33:57,466 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144270552] [2021-11-09 08:33:57,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:33:57,466 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:33:57,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:33:57,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:33:57,621 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:33:57,621 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144270552] [2021-11-09 08:33:57,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144270552] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:33:57,622 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:33:57,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-09 08:33:57,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195077233] [2021-11-09 08:33:57,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 08:33:57,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:33:57,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 08:33:57,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-09 08:33:57,630 INFO L87 Difference]: Start difference. First operand 3163 states and 5383 transitions. Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:33:58,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:33:58,858 INFO L93 Difference]: Finished difference Result 25591 states and 40565 transitions. [2021-11-09 08:33:58,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-09 08:33:58,859 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2021-11-09 08:33:58,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:33:58,974 INFO L225 Difference]: With dead ends: 25591 [2021-11-09 08:33:58,974 INFO L226 Difference]: Without dead ends: 23989 [2021-11-09 08:33:58,986 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2021-11-09 08:33:59,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23989 states. [2021-11-09 08:33:59,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23989 to 4763. [2021-11-09 08:33:59,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4763 states, 4761 states have (on average 1.6448225162780927) internal successors, (7831), 4762 states have internal predecessors, (7831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:33:59,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4763 states to 4763 states and 7831 transitions. [2021-11-09 08:33:59,430 INFO L78 Accepts]: Start accepts. Automaton has 4763 states and 7831 transitions. Word has length 91 [2021-11-09 08:33:59,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:33:59,433 INFO L470 AbstractCegarLoop]: Abstraction has 4763 states and 7831 transitions. [2021-11-09 08:33:59,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:33:59,433 INFO L276 IsEmpty]: Start isEmpty. Operand 4763 states and 7831 transitions. [2021-11-09 08:33:59,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-09 08:33:59,434 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:33:59,435 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:33:59,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-09 08:33:59,436 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:33:59,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:33:59,483 INFO L85 PathProgramCache]: Analyzing trace with hash -30360326, now seen corresponding path program 1 times [2021-11-09 08:33:59,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:33:59,483 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419253395] [2021-11-09 08:33:59,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:33:59,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:33:59,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:33:59,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:33:59,567 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:33:59,568 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419253395] [2021-11-09 08:33:59,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419253395] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:33:59,568 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:33:59,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:33:59,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809016159] [2021-11-09 08:33:59,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:33:59,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:33:59,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:33:59,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:33:59,570 INFO L87 Difference]: Start difference. First operand 4763 states and 7831 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:33:59,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:33:59,872 INFO L93 Difference]: Finished difference Result 9489 states and 15147 transitions. [2021-11-09 08:33:59,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:33:59,872 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2021-11-09 08:33:59,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:33:59,888 INFO L225 Difference]: With dead ends: 9489 [2021-11-09 08:33:59,889 INFO L226 Difference]: Without dead ends: 6287 [2021-11-09 08:33:59,895 INFO L786 BasicCegarLoop]: 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 [2021-11-09 08:33:59,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6287 states. [2021-11-09 08:34:00,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6287 to 6285. [2021-11-09 08:34:00,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6285 states, 6283 states have (on average 1.6134012414451695) internal successors, (10137), 6284 states have internal predecessors, (10137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:00,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6285 states to 6285 states and 10137 transitions. [2021-11-09 08:34:00,272 INFO L78 Accepts]: Start accepts. Automaton has 6285 states and 10137 transitions. Word has length 93 [2021-11-09 08:34:00,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:34:00,272 INFO L470 AbstractCegarLoop]: Abstraction has 6285 states and 10137 transitions. [2021-11-09 08:34:00,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:00,273 INFO L276 IsEmpty]: Start isEmpty. Operand 6285 states and 10137 transitions. [2021-11-09 08:34:00,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-09 08:34:00,275 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:34:00,275 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:34:00,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-09 08:34:00,276 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:34:00,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:34:00,276 INFO L85 PathProgramCache]: Analyzing trace with hash 36133186, now seen corresponding path program 1 times [2021-11-09 08:34:00,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:34:00,279 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272615951] [2021-11-09 08:34:00,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:34:00,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:34:00,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:34:00,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:34:00,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:34:00,628 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272615951] [2021-11-09 08:34:00,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272615951] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:34:00,628 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:34:00,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-09 08:34:00,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245962626] [2021-11-09 08:34:00,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 08:34:00,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:34:00,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 08:34:00,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-09 08:34:00,632 INFO L87 Difference]: Start difference. First operand 6285 states and 10137 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:01,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:34:01,355 INFO L93 Difference]: Finished difference Result 11009 states and 17403 transitions. [2021-11-09 08:34:01,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-09 08:34:01,356 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2021-11-09 08:34:01,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:34:01,372 INFO L225 Difference]: With dead ends: 11009 [2021-11-09 08:34:01,373 INFO L226 Difference]: Without dead ends: 6287 [2021-11-09 08:34:01,380 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2021-11-09 08:34:01,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6287 states. [2021-11-09 08:34:01,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6287 to 6285. [2021-11-09 08:34:01,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6285 states, 6283 states have (on average 1.6057615788636002) internal successors, (10089), 6284 states have internal predecessors, (10089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:01,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6285 states to 6285 states and 10089 transitions. [2021-11-09 08:34:01,789 INFO L78 Accepts]: Start accepts. Automaton has 6285 states and 10089 transitions. Word has length 93 [2021-11-09 08:34:01,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:34:01,789 INFO L470 AbstractCegarLoop]: Abstraction has 6285 states and 10089 transitions. [2021-11-09 08:34:01,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:01,790 INFO L276 IsEmpty]: Start isEmpty. Operand 6285 states and 10089 transitions. [2021-11-09 08:34:01,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-09 08:34:01,791 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:34:01,792 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:34:01,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-09 08:34:01,792 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:34:01,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:34:01,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1825047262, now seen corresponding path program 1 times [2021-11-09 08:34:01,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:34:01,793 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837645129] [2021-11-09 08:34:01,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:34:01,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:34:01,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:34:01,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:34:01,858 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:34:01,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837645129] [2021-11-09 08:34:01,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837645129] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:34:01,859 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:34:01,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:34:01,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763738141] [2021-11-09 08:34:01,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:34:01,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:34:01,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:34:01,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:34:01,861 INFO L87 Difference]: Start difference. First operand 6285 states and 10089 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:02,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:34:02,419 INFO L93 Difference]: Finished difference Result 15153 states and 23563 transitions. [2021-11-09 08:34:02,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:34:02,420 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2021-11-09 08:34:02,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:34:02,445 INFO L225 Difference]: With dead ends: 15153 [2021-11-09 08:34:02,445 INFO L226 Difference]: Without dead ends: 10431 [2021-11-09 08:34:02,454 INFO L786 BasicCegarLoop]: 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 [2021-11-09 08:34:02,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10431 states. [2021-11-09 08:34:03,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10431 to 10429. [2021-11-09 08:34:03,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10429 states, 10427 states have (on average 1.558358108756114) internal successors, (16249), 10428 states have internal predecessors, (16249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:03,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10429 states to 10429 states and 16249 transitions. [2021-11-09 08:34:03,103 INFO L78 Accepts]: Start accepts. Automaton has 10429 states and 16249 transitions. Word has length 93 [2021-11-09 08:34:03,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:34:03,103 INFO L470 AbstractCegarLoop]: Abstraction has 10429 states and 16249 transitions. [2021-11-09 08:34:03,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:03,104 INFO L276 IsEmpty]: Start isEmpty. Operand 10429 states and 16249 transitions. [2021-11-09 08:34:03,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-09 08:34:03,105 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:34:03,105 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:34:03,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-09 08:34:03,105 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:34:03,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:34:03,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1222412418, now seen corresponding path program 1 times [2021-11-09 08:34:03,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:34:03,106 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866670973] [2021-11-09 08:34:03,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:34:03,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:34:03,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:34:03,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:34:03,167 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:34:03,167 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866670973] [2021-11-09 08:34:03,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866670973] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:34:03,167 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:34:03,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 08:34:03,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150903106] [2021-11-09 08:34:03,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:34:03,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:34:03,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:34:03,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:34:03,170 INFO L87 Difference]: Start difference. First operand 10429 states and 16249 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:04,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:34:04,198 INFO L93 Difference]: Finished difference Result 27009 states and 41083 transitions. [2021-11-09 08:34:04,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:34:04,199 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2021-11-09 08:34:04,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:34:04,238 INFO L225 Difference]: With dead ends: 27009 [2021-11-09 08:34:04,238 INFO L226 Difference]: Without dead ends: 18143 [2021-11-09 08:34:04,251 INFO L786 BasicCegarLoop]: 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 [2021-11-09 08:34:04,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18143 states. [2021-11-09 08:34:05,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18143 to 18141. [2021-11-09 08:34:05,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18141 states, 18139 states have (on average 1.5167870334638072) internal successors, (27513), 18140 states have internal predecessors, (27513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:05,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18141 states to 18141 states and 27513 transitions. [2021-11-09 08:34:05,505 INFO L78 Accepts]: Start accepts. Automaton has 18141 states and 27513 transitions. Word has length 93 [2021-11-09 08:34:05,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:34:05,505 INFO L470 AbstractCegarLoop]: Abstraction has 18141 states and 27513 transitions. [2021-11-09 08:34:05,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:05,506 INFO L276 IsEmpty]: Start isEmpty. Operand 18141 states and 27513 transitions. [2021-11-09 08:34:05,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-09 08:34:05,507 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:34:05,507 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:34:05,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-09 08:34:05,508 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:34:05,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:34:05,508 INFO L85 PathProgramCache]: Analyzing trace with hash 705405902, now seen corresponding path program 1 times [2021-11-09 08:34:05,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:34:05,509 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378969646] [2021-11-09 08:34:05,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:34:05,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:34:05,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:34:05,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:34:05,606 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:34:05,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378969646] [2021-11-09 08:34:05,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378969646] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:34:05,607 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:34:05,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 08:34:05,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737225746] [2021-11-09 08:34:05,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 08:34:05,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:34:05,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 08:34:05,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-09 08:34:05,609 INFO L87 Difference]: Start difference. First operand 18141 states and 27513 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:06,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:34:06,862 INFO L93 Difference]: Finished difference Result 34719 states and 52154 transitions. [2021-11-09 08:34:06,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 08:34:06,863 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2021-11-09 08:34:06,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:34:06,905 INFO L225 Difference]: With dead ends: 34719 [2021-11-09 08:34:06,905 INFO L226 Difference]: Without dead ends: 18141 [2021-11-09 08:34:06,924 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-09 08:34:06,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18141 states. [2021-11-09 08:34:08,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18141 to 18141. [2021-11-09 08:34:08,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18141 states, 18139 states have (on average 1.5026737967914439) internal successors, (27257), 18140 states have internal predecessors, (27257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:08,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18141 states to 18141 states and 27257 transitions. [2021-11-09 08:34:08,163 INFO L78 Accepts]: Start accepts. Automaton has 18141 states and 27257 transitions. Word has length 94 [2021-11-09 08:34:08,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:34:08,163 INFO L470 AbstractCegarLoop]: Abstraction has 18141 states and 27257 transitions. [2021-11-09 08:34:08,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:08,164 INFO L276 IsEmpty]: Start isEmpty. Operand 18141 states and 27257 transitions. [2021-11-09 08:34:08,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-09 08:34:08,165 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:34:08,165 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:34:08,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-09 08:34:08,166 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:34:08,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:34:08,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1549411404, now seen corresponding path program 1 times [2021-11-09 08:34:08,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:34:08,167 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304299299] [2021-11-09 08:34:08,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:34:08,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:34:08,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:34:08,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:34:08,263 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:34:08,263 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304299299] [2021-11-09 08:34:08,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304299299] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:34:08,263 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:34:08,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 08:34:08,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460471333] [2021-11-09 08:34:08,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 08:34:08,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:34:08,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 08:34:08,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-09 08:34:08,265 INFO L87 Difference]: Start difference. First operand 18141 states and 27257 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:09,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:34:09,216 INFO L93 Difference]: Finished difference Result 34719 states and 51642 transitions. [2021-11-09 08:34:09,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 08:34:09,217 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2021-11-09 08:34:09,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:34:09,258 INFO L225 Difference]: With dead ends: 34719 [2021-11-09 08:34:09,258 INFO L226 Difference]: Without dead ends: 18141 [2021-11-09 08:34:09,279 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-09 08:34:09,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18141 states. [2021-11-09 08:34:10,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18141 to 18141. [2021-11-09 08:34:10,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18141 states, 18139 states have (on average 1.4920888692871712) internal successors, (27065), 18140 states have internal predecessors, (27065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:10,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18141 states to 18141 states and 27065 transitions. [2021-11-09 08:34:10,434 INFO L78 Accepts]: Start accepts. Automaton has 18141 states and 27065 transitions. Word has length 94 [2021-11-09 08:34:10,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:34:10,434 INFO L470 AbstractCegarLoop]: Abstraction has 18141 states and 27065 transitions. [2021-11-09 08:34:10,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:10,435 INFO L276 IsEmpty]: Start isEmpty. Operand 18141 states and 27065 transitions. [2021-11-09 08:34:10,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-09 08:34:10,436 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:34:10,436 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:34:10,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-09 08:34:10,437 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:34:10,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:34:10,437 INFO L85 PathProgramCache]: Analyzing trace with hash 847811530, now seen corresponding path program 1 times [2021-11-09 08:34:10,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:34:10,439 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101366740] [2021-11-09 08:34:10,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:34:10,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:34:10,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:34:10,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:34:10,570 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:34:10,570 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101366740] [2021-11-09 08:34:10,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101366740] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:34:10,572 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:34:10,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-09 08:34:10,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813975600] [2021-11-09 08:34:10,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 08:34:10,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:34:10,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 08:34:10,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-09 08:34:10,574 INFO L87 Difference]: Start difference. First operand 18141 states and 27065 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:12,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:34:12,958 INFO L93 Difference]: Finished difference Result 32384 states and 47459 transitions. [2021-11-09 08:34:12,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-09 08:34:12,959 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2021-11-09 08:34:12,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:34:13,024 INFO L225 Difference]: With dead ends: 32384 [2021-11-09 08:34:13,024 INFO L226 Difference]: Without dead ends: 32382 [2021-11-09 08:34:13,033 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-11-09 08:34:13,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32382 states. [2021-11-09 08:34:14,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32382 to 18909. [2021-11-09 08:34:14,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18909 states, 18907 states have (on average 1.468715290633099) internal successors, (27769), 18908 states have internal predecessors, (27769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:14,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18909 states to 18909 states and 27769 transitions. [2021-11-09 08:34:14,539 INFO L78 Accepts]: Start accepts. Automaton has 18909 states and 27769 transitions. Word has length 94 [2021-11-09 08:34:14,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:34:14,540 INFO L470 AbstractCegarLoop]: Abstraction has 18909 states and 27769 transitions. [2021-11-09 08:34:14,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:14,540 INFO L276 IsEmpty]: Start isEmpty. Operand 18909 states and 27769 transitions. [2021-11-09 08:34:14,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-09 08:34:14,546 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:34:14,547 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:34:14,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-09 08:34:14,547 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:34:14,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:34:14,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1908723870, now seen corresponding path program 1 times [2021-11-09 08:34:14,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:34:14,548 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502137445] [2021-11-09 08:34:14,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:34:14,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:34:14,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:34:14,611 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:34:14,612 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:34:14,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502137445] [2021-11-09 08:34:14,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502137445] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:34:14,612 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:34:14,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-09 08:34:14,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285012491] [2021-11-09 08:34:14,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:34:14,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:34:14,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:34:14,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:34:14,614 INFO L87 Difference]: Start difference. First operand 18909 states and 27769 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:19,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:34:19,238 INFO L93 Difference]: Finished difference Result 21917 states and 33393 transitions. [2021-11-09 08:34:19,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:34:19,239 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2021-11-09 08:34:19,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:34:19,273 INFO L225 Difference]: With dead ends: 21917 [2021-11-09 08:34:19,274 INFO L226 Difference]: Without dead ends: 20413 [2021-11-09 08:34:19,282 INFO L786 BasicCegarLoop]: 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 [2021-11-09 08:34:19,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20413 states. [2021-11-09 08:34:20,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20413 to 20411. [2021-11-09 08:34:20,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20411 states, 20409 states have (on average 1.4557303150570826) internal successors, (29710), 20410 states have internal predecessors, (29710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:20,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20411 states to 20411 states and 29710 transitions. [2021-11-09 08:34:20,489 INFO L78 Accepts]: Start accepts. Automaton has 20411 states and 29710 transitions. Word has length 121 [2021-11-09 08:34:20,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:34:20,490 INFO L470 AbstractCegarLoop]: Abstraction has 20411 states and 29710 transitions. [2021-11-09 08:34:20,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 2 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:20,490 INFO L276 IsEmpty]: Start isEmpty. Operand 20411 states and 29710 transitions. [2021-11-09 08:34:20,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-09 08:34:20,496 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:34:20,497 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:34:20,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-09 08:34:20,497 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:34:20,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:34:20,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1317201341, now seen corresponding path program 1 times [2021-11-09 08:34:20,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:34:20,498 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871600538] [2021-11-09 08:34:20,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:34:20,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:34:20,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:34:20,558 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:34:20,559 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:34:20,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871600538] [2021-11-09 08:34:20,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871600538] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:34:20,559 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:34:20,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-09 08:34:20,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918353042] [2021-11-09 08:34:20,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:34:20,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:34:20,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:34:20,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:34:20,561 INFO L87 Difference]: Start difference. First operand 20411 states and 29710 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:24,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:34:24,781 INFO L93 Difference]: Finished difference Result 26423 states and 39216 transitions. [2021-11-09 08:34:24,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:34:24,781 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 0 states have call successors, (0), 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 123 [2021-11-09 08:34:24,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:34:24,811 INFO L225 Difference]: With dead ends: 26423 [2021-11-09 08:34:24,811 INFO L226 Difference]: Without dead ends: 23417 [2021-11-09 08:34:24,817 INFO L786 BasicCegarLoop]: 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 [2021-11-09 08:34:24,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23417 states. [2021-11-09 08:34:25,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23417 to 23415. [2021-11-09 08:34:25,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23415 states, 23413 states have (on average 1.4350147354034084) internal successors, (33598), 23414 states have internal predecessors, (33598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:25,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23415 states to 23415 states and 33598 transitions. [2021-11-09 08:34:25,884 INFO L78 Accepts]: Start accepts. Automaton has 23415 states and 33598 transitions. Word has length 123 [2021-11-09 08:34:25,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:34:25,884 INFO L470 AbstractCegarLoop]: Abstraction has 23415 states and 33598 transitions. [2021-11-09 08:34:25,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:25,884 INFO L276 IsEmpty]: Start isEmpty. Operand 23415 states and 33598 transitions. [2021-11-09 08:34:25,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-09 08:34:25,898 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:34:25,899 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-09 08:34:25,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-09 08:34:25,899 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:34:25,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:34:25,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1704205326, now seen corresponding path program 1 times [2021-11-09 08:34:25,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:34:25,900 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901166264] [2021-11-09 08:34:25,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:34:25,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:34:25,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:34:26,026 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-09 08:34:26,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:34:26,026 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901166264] [2021-11-09 08:34:26,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901166264] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:34:26,027 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:34:26,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-09 08:34:26,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344129951] [2021-11-09 08:34:26,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 08:34:26,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:34:26,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 08:34:26,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-09 08:34:26,030 INFO L87 Difference]: Start difference. First operand 23415 states and 33598 transitions. Second operand has 9 states, 9 states have (on average 13.222222222222221) internal successors, (119), 9 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:33,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:34:33,067 INFO L93 Difference]: Finished difference Result 148231 states and 212582 transitions. [2021-11-09 08:34:33,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-09 08:34:33,067 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.222222222222221) internal successors, (119), 9 states have internal predecessors, (119), 0 states have call successors, (0), 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 129 [2021-11-09 08:34:33,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:34:33,274 INFO L225 Difference]: With dead ends: 148231 [2021-11-09 08:34:33,274 INFO L226 Difference]: Without dead ends: 130885 [2021-11-09 08:34:33,315 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2021-11-09 08:34:33,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130885 states. [2021-11-09 08:34:36,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130885 to 40759. [2021-11-09 08:34:36,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40759 states, 40757 states have (on average 1.4304782000637928) internal successors, (58302), 40758 states have internal predecessors, (58302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:36,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40759 states to 40759 states and 58302 transitions. [2021-11-09 08:34:36,864 INFO L78 Accepts]: Start accepts. Automaton has 40759 states and 58302 transitions. Word has length 129 [2021-11-09 08:34:36,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:34:36,864 INFO L470 AbstractCegarLoop]: Abstraction has 40759 states and 58302 transitions. [2021-11-09 08:34:36,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.222222222222221) internal successors, (119), 9 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:36,864 INFO L276 IsEmpty]: Start isEmpty. Operand 40759 states and 58302 transitions. [2021-11-09 08:34:36,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-09 08:34:36,880 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:34:36,880 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-09 08:34:36,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-09 08:34:36,880 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:34:36,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:34:36,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1343254354, now seen corresponding path program 1 times [2021-11-09 08:34:36,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:34:36,881 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151579529] [2021-11-09 08:34:36,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:34:36,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:34:36,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:34:37,002 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-09 08:34:37,002 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:34:37,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151579529] [2021-11-09 08:34:37,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151579529] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:34:37,003 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:34:37,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-09 08:34:37,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87405233] [2021-11-09 08:34:37,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 08:34:37,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:34:37,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 08:34:37,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-09 08:34:37,005 INFO L87 Difference]: Start difference. First operand 40759 states and 58302 transitions. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:46,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:34:46,631 INFO L93 Difference]: Finished difference Result 165575 states and 237286 transitions. [2021-11-09 08:34:46,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-09 08:34:46,632 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 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 129 [2021-11-09 08:34:46,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:34:46,845 INFO L225 Difference]: With dead ends: 165575 [2021-11-09 08:34:46,845 INFO L226 Difference]: Without dead ends: 148229 [2021-11-09 08:34:46,878 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2021-11-09 08:34:46,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148229 states. [2021-11-09 08:34:52,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148229 to 66807. [2021-11-09 08:34:52,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66807 states, 66805 states have (on average 1.4250130978220192) internal successors, (95198), 66806 states have internal predecessors, (95198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:52,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66807 states to 66807 states and 95198 transitions. [2021-11-09 08:34:52,217 INFO L78 Accepts]: Start accepts. Automaton has 66807 states and 95198 transitions. Word has length 129 [2021-11-09 08:34:52,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:34:52,218 INFO L470 AbstractCegarLoop]: Abstraction has 66807 states and 95198 transitions. [2021-11-09 08:34:52,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:52,218 INFO L276 IsEmpty]: Start isEmpty. Operand 66807 states and 95198 transitions. [2021-11-09 08:34:52,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-09 08:34:52,234 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:34:52,234 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-09 08:34:52,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-09 08:34:52,235 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:34:52,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:34:52,235 INFO L85 PathProgramCache]: Analyzing trace with hash 126178628, now seen corresponding path program 1 times [2021-11-09 08:34:52,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:34:52,236 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502397966] [2021-11-09 08:34:52,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:34:52,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:34:52,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:34:52,355 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-09 08:34:52,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:34:52,355 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502397966] [2021-11-09 08:34:52,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502397966] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:34:52,356 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:34:52,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-09 08:34:52,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976297081] [2021-11-09 08:34:52,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 08:34:52,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:34:52,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 08:34:52,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-09 08:34:52,357 INFO L87 Difference]: Start difference. First operand 66807 states and 95198 transitions. Second operand has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)