./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e6446f-e6ba-4824-b8ca-789d03beda7b/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e6446f-e6ba-4824-b8ca-789d03beda7b/bin/uautomizer-AkOaLMaTGY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e6446f-e6ba-4824-b8ca-789d03beda7b/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e6446f-e6ba-4824-b8ca-789d03beda7b/bin/uautomizer-AkOaLMaTGY/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e6446f-e6ba-4824-b8ca-789d03beda7b/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e6446f-e6ba-4824-b8ca-789d03beda7b/bin/uautomizer-AkOaLMaTGY --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 9674251da7d9ff9045cc98880d6752b693163f5c0467dc21f0f16b64a076bd08 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 07:53:15,261 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 07:53:15,264 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 07:53:15,326 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 07:53:15,327 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 07:53:15,332 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 07:53:15,334 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 07:53:15,339 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 07:53:15,343 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 07:53:15,352 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 07:53:15,353 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 07:53:15,356 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 07:53:15,357 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 07:53:15,360 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 07:53:15,362 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 07:53:15,369 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 07:53:15,371 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 07:53:15,372 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 07:53:15,374 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 07:53:15,386 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 07:53:15,388 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 07:53:15,392 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 07:53:15,394 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 07:53:15,395 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 07:53:15,399 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 07:53:15,400 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 07:53:15,400 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 07:53:15,401 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 07:53:15,402 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 07:53:15,403 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 07:53:15,404 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 07:53:15,405 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 07:53:15,406 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 07:53:15,407 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 07:53:15,408 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 07:53:15,409 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 07:53:15,410 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 07:53:15,410 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 07:53:15,410 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 07:53:15,411 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 07:53:15,412 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 07:53:15,413 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e6446f-e6ba-4824-b8ca-789d03beda7b/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-07 07:53:15,440 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 07:53:15,441 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 07:53:15,441 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 07:53:15,442 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 07:53:15,443 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 07:53:15,443 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 07:53:15,443 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 07:53:15,444 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 07:53:15,444 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 07:53:15,444 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 07:53:15,445 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 07:53:15,445 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 07:53:15,445 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 07:53:15,446 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 07:53:15,446 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 07:53:15,446 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 07:53:15,446 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 07:53:15,447 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 07:53:15,447 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 07:53:15,447 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 07:53:15,448 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 07:53:15,448 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 07:53:15,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 07:53:15,449 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 07:53:15,449 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 07:53:15,449 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 07:53:15,449 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 07:53:15,450 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 07:53:15,450 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 07:53:15,450 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 07:53:15,451 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 07:53:15,451 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 07:53:15,451 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_41e6446f-e6ba-4824-b8ca-789d03beda7b/bin/uautomizer-AkOaLMaTGY/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e6446f-e6ba-4824-b8ca-789d03beda7b/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9674251da7d9ff9045cc98880d6752b693163f5c0467dc21f0f16b64a076bd08 [2021-11-07 07:53:15,749 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 07:53:15,774 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 07:53:15,778 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 07:53:15,779 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 07:53:15,780 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 07:53:15,781 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e6446f-e6ba-4824-b8ca-789d03beda7b/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2021-11-07 07:53:15,860 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e6446f-e6ba-4824-b8ca-789d03beda7b/bin/uautomizer-AkOaLMaTGY/data/5e888269a/3fedb1af5e9a454dadc05e97ae53dff8/FLAG17844bc0e [2021-11-07 07:53:16,578 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 07:53:16,578 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e6446f-e6ba-4824-b8ca-789d03beda7b/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2021-11-07 07:53:16,598 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e6446f-e6ba-4824-b8ca-789d03beda7b/bin/uautomizer-AkOaLMaTGY/data/5e888269a/3fedb1af5e9a454dadc05e97ae53dff8/FLAG17844bc0e [2021-11-07 07:53:16,782 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e6446f-e6ba-4824-b8ca-789d03beda7b/bin/uautomizer-AkOaLMaTGY/data/5e888269a/3fedb1af5e9a454dadc05e97ae53dff8 [2021-11-07 07:53:16,785 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 07:53:16,786 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 07:53:16,789 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 07:53:16,789 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 07:53:16,793 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 07:53:16,794 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:53:16" (1/1) ... [2021-11-07 07:53:16,798 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@609c6fa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:53:16, skipping insertion in model container [2021-11-07 07:53:16,805 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:53:16" (1/1) ... [2021-11-07 07:53:16,814 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 07:53:16,883 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 07:53:17,268 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_41e6446f-e6ba-4824-b8ca-789d03beda7b/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[14166,14179] [2021-11-07 07:53:17,286 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_41e6446f-e6ba-4824-b8ca-789d03beda7b/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15226,15239] [2021-11-07 07:53:17,399 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_41e6446f-e6ba-4824-b8ca-789d03beda7b/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[26532,26545] [2021-11-07 07:53:17,409 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_41e6446f-e6ba-4824-b8ca-789d03beda7b/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[27179,27192] [2021-11-07 07:53:17,439 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_41e6446f-e6ba-4824-b8ca-789d03beda7b/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[28412,28425] [2021-11-07 07:53:17,514 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:53:17,535 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 07:53:17,761 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_41e6446f-e6ba-4824-b8ca-789d03beda7b/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[14166,14179] [2021-11-07 07:53:17,788 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_41e6446f-e6ba-4824-b8ca-789d03beda7b/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15226,15239] [2021-11-07 07:53:17,933 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_41e6446f-e6ba-4824-b8ca-789d03beda7b/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[26532,26545] [2021-11-07 07:53:17,942 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_41e6446f-e6ba-4824-b8ca-789d03beda7b/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[27179,27192] [2021-11-07 07:53:17,954 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_41e6446f-e6ba-4824-b8ca-789d03beda7b/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[28412,28425] [2021-11-07 07:53:17,979 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:53:17,997 INFO L208 MainTranslator]: Completed translation [2021-11-07 07:53:17,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:53:17 WrapperNode [2021-11-07 07:53:17,998 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 07:53:18,000 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 07:53:18,000 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 07:53:18,000 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 07:53:18,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:53:17" (1/1) ... [2021-11-07 07:53:18,034 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:53:17" (1/1) ... [2021-11-07 07:53:18,149 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 07:53:18,150 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 07:53:18,150 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 07:53:18,150 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 07:53:18,160 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:53:17" (1/1) ... [2021-11-07 07:53:18,160 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:53:17" (1/1) ... [2021-11-07 07:53:18,168 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:53:17" (1/1) ... [2021-11-07 07:53:18,168 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:53:17" (1/1) ... [2021-11-07 07:53:18,194 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:53:17" (1/1) ... [2021-11-07 07:53:18,210 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:53:17" (1/1) ... [2021-11-07 07:53:18,215 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:53:17" (1/1) ... [2021-11-07 07:53:18,224 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 07:53:18,239 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 07:53:18,240 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 07:53:18,240 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 07:53:18,241 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:53:17" (1/1) ... [2021-11-07 07:53:18,250 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 07:53:18,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e6446f-e6ba-4824-b8ca-789d03beda7b/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:53:18,293 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e6446f-e6ba-4824-b8ca-789d03beda7b/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 07:53:18,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e6446f-e6ba-4824-b8ca-789d03beda7b/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 07:53:18,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 07:53:18,358 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 07:53:18,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 07:53:18,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 07:53:19,960 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 07:53:19,961 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-07 07:53:19,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:53:19 BoogieIcfgContainer [2021-11-07 07:53:19,965 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 07:53:19,969 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 07:53:19,969 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 07:53:19,974 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 07:53:19,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 07:53:16" (1/3) ... [2021-11-07 07:53:19,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5af57c8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:53:19, skipping insertion in model container [2021-11-07 07:53:19,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:53:17" (2/3) ... [2021-11-07 07:53:19,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5af57c8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:53:19, skipping insertion in model container [2021-11-07 07:53:19,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:53:19" (3/3) ... [2021-11-07 07:53:19,978 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2021-11-07 07:53:19,985 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 07:53:19,986 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-07 07:53:20,047 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 07:53:20,055 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 [2021-11-07 07:53:20,055 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-07 07:53:20,082 INFO L276 IsEmpty]: Start isEmpty. Operand has 377 states, 371 states have (on average 1.8274932614555257) internal successors, (678), 376 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:53:20,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-07 07:53:20,099 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:53:20,100 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:53:20,100 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 07:53:20,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:53:20,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1203570768, now seen corresponding path program 1 times [2021-11-07 07:53:20,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:53:20,116 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909081830] [2021-11-07 07:53:20,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:53:20,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:53:20,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:53:20,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:53:20,939 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:53:20,940 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909081830] [2021-11-07 07:53:20,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909081830] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:53:20,941 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:53:20,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 07:53:20,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556695532] [2021-11-07 07:53:20,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:53:20,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:53:20,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:53:20,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:53:20,979 INFO L87 Difference]: Start difference. First operand has 377 states, 371 states have (on average 1.8274932614555257) internal successors, (678), 376 states have internal predecessors, (678), 0 states have call successors, (0), 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 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:53:21,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:53:21,256 INFO L93 Difference]: Finished difference Result 1100 states and 1983 transitions. [2021-11-07 07:53:21,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:53:21,259 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 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 139 [2021-11-07 07:53:21,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:53:21,288 INFO L225 Difference]: With dead ends: 1100 [2021-11-07 07:53:21,289 INFO L226 Difference]: Without dead ends: 726 [2021-11-07 07:53:21,297 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:53:21,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2021-11-07 07:53:21,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 701. [2021-11-07 07:53:21,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 696 states have (on average 1.4425287356321839) internal successors, (1004), 700 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:53:21,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 1004 transitions. [2021-11-07 07:53:21,438 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 1004 transitions. Word has length 139 [2021-11-07 07:53:21,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:53:21,439 INFO L470 AbstractCegarLoop]: Abstraction has 701 states and 1004 transitions. [2021-11-07 07:53:21,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:53:21,439 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 1004 transitions. [2021-11-07 07:53:21,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-07 07:53:21,451 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:53:21,452 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:53:21,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 07:53:21,453 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 07:53:21,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:53:21,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1141139268, now seen corresponding path program 1 times [2021-11-07 07:53:21,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:53:21,457 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483133864] [2021-11-07 07:53:21,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:53:21,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:53:21,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:53:21,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:53:21,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:53:21,588 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483133864] [2021-11-07 07:53:21,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483133864] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:53:21,588 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:53:21,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:53:21,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441402107] [2021-11-07 07:53:21,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:53:21,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:53:21,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:53:21,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:53:21,594 INFO L87 Difference]: Start difference. First operand 701 states and 1004 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:53:21,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:53:21,665 INFO L93 Difference]: Finished difference Result 2065 states and 2950 transitions. [2021-11-07 07:53:21,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:53:21,667 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-11-07 07:53:21,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:53:21,676 INFO L225 Difference]: With dead ends: 2065 [2021-11-07 07:53:21,676 INFO L226 Difference]: Without dead ends: 1392 [2021-11-07 07:53:21,679 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 [2021-11-07 07:53:21,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1392 states. [2021-11-07 07:53:21,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1392 to 703. [2021-11-07 07:53:21,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 698 states have (on average 1.4412607449856734) internal successors, (1006), 702 states have internal predecessors, (1006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:53:21,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 1006 transitions. [2021-11-07 07:53:21,756 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 1006 transitions. Word has length 140 [2021-11-07 07:53:21,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:53:21,756 INFO L470 AbstractCegarLoop]: Abstraction has 703 states and 1006 transitions. [2021-11-07 07:53:21,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:53:21,757 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 1006 transitions. [2021-11-07 07:53:21,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-11-07 07:53:21,760 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:53:21,760 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:53:21,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 07:53:21,761 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 07:53:21,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:53:21,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1084924930, now seen corresponding path program 1 times [2021-11-07 07:53:21,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:53:21,762 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765608048] [2021-11-07 07:53:21,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:53:21,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:53:21,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:53:21,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:53:21,898 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:53:21,898 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765608048] [2021-11-07 07:53:21,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765608048] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:53:21,904 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:53:21,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:53:21,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201003866] [2021-11-07 07:53:21,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:53:21,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:53:21,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:53:21,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:53:21,909 INFO L87 Difference]: Start difference. First operand 703 states and 1006 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:53:22,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:53:22,030 INFO L93 Difference]: Finished difference Result 1889 states and 2711 transitions. [2021-11-07 07:53:22,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:53:22,031 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2021-11-07 07:53:22,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:53:22,040 INFO L225 Difference]: With dead ends: 1889 [2021-11-07 07:53:22,040 INFO L226 Difference]: Without dead ends: 1364 [2021-11-07 07:53:22,041 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 [2021-11-07 07:53:22,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1364 states. [2021-11-07 07:53:22,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1364 to 1339. [2021-11-07 07:53:22,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1339 states, 1334 states have (on average 1.4295352323838082) internal successors, (1907), 1338 states have internal predecessors, (1907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:53:22,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1339 states to 1339 states and 1907 transitions. [2021-11-07 07:53:22,117 INFO L78 Accepts]: Start accepts. Automaton has 1339 states and 1907 transitions. Word has length 141 [2021-11-07 07:53:22,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:53:22,117 INFO L470 AbstractCegarLoop]: Abstraction has 1339 states and 1907 transitions. [2021-11-07 07:53:22,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:53:22,118 INFO L276 IsEmpty]: Start isEmpty. Operand 1339 states and 1907 transitions. [2021-11-07 07:53:22,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-11-07 07:53:22,122 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:53:22,122 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:53:22,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 07:53:22,123 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 07:53:22,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:53:22,124 INFO L85 PathProgramCache]: Analyzing trace with hash -980453119, now seen corresponding path program 1 times [2021-11-07 07:53:22,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:53:22,129 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132917509] [2021-11-07 07:53:22,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:53:22,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:53:22,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:53:22,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:53:22,378 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:53:22,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132917509] [2021-11-07 07:53:22,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132917509] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:53:22,379 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:53:22,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 07:53:22,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115422888] [2021-11-07 07:53:22,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 07:53:22,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:53:22,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 07:53:22,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:53:22,382 INFO L87 Difference]: Start difference. First operand 1339 states and 1907 transitions. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:53:22,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:53:22,605 INFO L93 Difference]: Finished difference Result 3750 states and 5334 transitions. [2021-11-07 07:53:22,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:53:22,606 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2021-11-07 07:53:22,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:53:22,624 INFO L225 Difference]: With dead ends: 3750 [2021-11-07 07:53:22,625 INFO L226 Difference]: Without dead ends: 2425 [2021-11-07 07:53:22,628 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:53:22,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2425 states. [2021-11-07 07:53:22,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2425 to 2403. [2021-11-07 07:53:22,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2403 states, 2398 states have (on average 1.4132610508757297) internal successors, (3389), 2402 states have internal predecessors, (3389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:53:22,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2403 states to 2403 states and 3389 transitions. [2021-11-07 07:53:22,809 INFO L78 Accepts]: Start accepts. Automaton has 2403 states and 3389 transitions. Word has length 141 [2021-11-07 07:53:22,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:53:22,810 INFO L470 AbstractCegarLoop]: Abstraction has 2403 states and 3389 transitions. [2021-11-07 07:53:22,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:53:22,812 INFO L276 IsEmpty]: Start isEmpty. Operand 2403 states and 3389 transitions. [2021-11-07 07:53:22,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-11-07 07:53:22,817 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:53:22,817 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:53:22,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 07:53:22,818 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 07:53:22,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:53:22,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1926899985, now seen corresponding path program 1 times [2021-11-07 07:53:22,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:53:22,819 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522874470] [2021-11-07 07:53:22,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:53:22,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:53:22,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:53:22,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:53:22,981 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:53:22,981 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522874470] [2021-11-07 07:53:22,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522874470] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:53:22,982 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:53:22,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 07:53:22,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607375546] [2021-11-07 07:53:22,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:53:22,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:53:22,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:53:22,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:53:22,984 INFO L87 Difference]: Start difference. First operand 2403 states and 3389 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:53:23,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:53:23,336 INFO L93 Difference]: Finished difference Result 7000 states and 9834 transitions. [2021-11-07 07:53:23,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:53:23,337 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2021-11-07 07:53:23,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:53:23,362 INFO L225 Difference]: With dead ends: 7000 [2021-11-07 07:53:23,362 INFO L226 Difference]: Without dead ends: 4653 [2021-11-07 07:53:23,368 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:53:23,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4653 states. [2021-11-07 07:53:23,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4653 to 4626. [2021-11-07 07:53:23,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4626 states, 4621 states have (on average 1.396018177883575) internal successors, (6451), 4625 states have internal predecessors, (6451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:53:23,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4626 states to 4626 states and 6451 transitions. [2021-11-07 07:53:23,747 INFO L78 Accepts]: Start accepts. Automaton has 4626 states and 6451 transitions. Word has length 141 [2021-11-07 07:53:23,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:53:23,748 INFO L470 AbstractCegarLoop]: Abstraction has 4626 states and 6451 transitions. [2021-11-07 07:53:23,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:53:23,748 INFO L276 IsEmpty]: Start isEmpty. Operand 4626 states and 6451 transitions. [2021-11-07 07:53:23,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-07 07:53:23,757 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:53:23,757 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:53:23,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 07:53:23,758 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 07:53:23,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:53:23,759 INFO L85 PathProgramCache]: Analyzing trace with hash 349588475, now seen corresponding path program 1 times [2021-11-07 07:53:23,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:53:23,759 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095695200] [2021-11-07 07:53:23,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:53:23,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:53:23,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:53:23,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:53:23,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:53:23,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095695200] [2021-11-07 07:53:23,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095695200] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:53:23,826 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:53:23,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:53:23,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610341115] [2021-11-07 07:53:23,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:53:23,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:53:23,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:53:23,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:53:23,835 INFO L87 Difference]: Start difference. First operand 4626 states and 6451 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:53:24,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:53:24,346 INFO L93 Difference]: Finished difference Result 13726 states and 19120 transitions. [2021-11-07 07:53:24,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:53:24,347 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 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 142 [2021-11-07 07:53:24,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:53:24,397 INFO L225 Difference]: With dead ends: 13726 [2021-11-07 07:53:24,397 INFO L226 Difference]: Without dead ends: 9191 [2021-11-07 07:53:24,405 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 [2021-11-07 07:53:24,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9191 states. [2021-11-07 07:53:24,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9191 to 4636. [2021-11-07 07:53:24,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4636 states, 4631 states have (on average 1.3951630317426043) internal successors, (6461), 4635 states have internal predecessors, (6461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:53:24,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4636 states to 4636 states and 6461 transitions. [2021-11-07 07:53:24,833 INFO L78 Accepts]: Start accepts. Automaton has 4636 states and 6461 transitions. Word has length 142 [2021-11-07 07:53:24,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:53:24,833 INFO L470 AbstractCegarLoop]: Abstraction has 4636 states and 6461 transitions. [2021-11-07 07:53:24,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:53:24,834 INFO L276 IsEmpty]: Start isEmpty. Operand 4636 states and 6461 transitions. [2021-11-07 07:53:24,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-07 07:53:24,840 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:53:24,841 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:53:24,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 07:53:24,841 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 07:53:24,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:53:24,842 INFO L85 PathProgramCache]: Analyzing trace with hash -88637170, now seen corresponding path program 1 times [2021-11-07 07:53:24,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:53:24,842 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048180894] [2021-11-07 07:53:24,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:53:24,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:53:24,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:53:24,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:53:24,955 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:53:24,955 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048180894] [2021-11-07 07:53:24,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048180894] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:53:24,955 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:53:24,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 07:53:24,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033781962] [2021-11-07 07:53:24,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:53:24,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:53:24,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:53:24,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:53:24,957 INFO L87 Difference]: Start difference. First operand 4636 states and 6461 transitions. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:53:25,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:53:25,570 INFO L93 Difference]: Finished difference Result 13426 states and 18670 transitions. [2021-11-07 07:53:25,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:53:25,571 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2021-11-07 07:53:25,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:53:25,630 INFO L225 Difference]: With dead ends: 13426 [2021-11-07 07:53:25,630 INFO L226 Difference]: Without dead ends: 8891 [2021-11-07 07:53:25,638 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:53:25,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8891 states. [2021-11-07 07:53:26,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8891 to 8864. [2021-11-07 07:53:26,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8864 states, 8859 states have (on average 1.379275313240772) internal successors, (12219), 8863 states have internal predecessors, (12219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:53:26,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8864 states to 8864 states and 12219 transitions. [2021-11-07 07:53:26,274 INFO L78 Accepts]: Start accepts. Automaton has 8864 states and 12219 transitions. Word has length 143 [2021-11-07 07:53:26,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:53:26,275 INFO L470 AbstractCegarLoop]: Abstraction has 8864 states and 12219 transitions. [2021-11-07 07:53:26,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:53:26,276 INFO L276 IsEmpty]: Start isEmpty. Operand 8864 states and 12219 transitions. [2021-11-07 07:53:26,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-07 07:53:26,291 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:53:26,291 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:53:26,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 07:53:26,292 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 07:53:26,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:53:26,293 INFO L85 PathProgramCache]: Analyzing trace with hash -845151558, now seen corresponding path program 1 times [2021-11-07 07:53:26,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:53:26,293 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555188891] [2021-11-07 07:53:26,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:53:26,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:53:26,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:53:26,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:53:26,338 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:53:26,338 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555188891] [2021-11-07 07:53:26,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555188891] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:53:26,339 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:53:26,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:53:26,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973199486] [2021-11-07 07:53:26,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:53:26,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:53:26,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:53:26,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:53:26,341 INFO L87 Difference]: Start difference. First operand 8864 states and 12219 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:53:27,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:53:27,406 INFO L93 Difference]: Finished difference Result 25440 states and 35201 transitions. [2021-11-07 07:53:27,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:53:27,407 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 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 144 [2021-11-07 07:53:27,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:53:27,460 INFO L225 Difference]: With dead ends: 25440 [2021-11-07 07:53:27,460 INFO L226 Difference]: Without dead ends: 17451 [2021-11-07 07:53:27,475 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 [2021-11-07 07:53:27,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17451 states. [2021-11-07 07:53:28,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17451 to 8884. [2021-11-07 07:53:28,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8884 states, 8879 states have (on average 1.3784209933551075) internal successors, (12239), 8883 states have internal predecessors, (12239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:53:28,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8884 states to 8884 states and 12239 transitions. [2021-11-07 07:53:28,163 INFO L78 Accepts]: Start accepts. Automaton has 8884 states and 12239 transitions. Word has length 144 [2021-11-07 07:53:28,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:53:28,164 INFO L470 AbstractCegarLoop]: Abstraction has 8884 states and 12239 transitions. [2021-11-07 07:53:28,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:53:28,165 INFO L276 IsEmpty]: Start isEmpty. Operand 8884 states and 12239 transitions. [2021-11-07 07:53:28,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-07 07:53:28,236 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:53:28,236 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:53:28,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-07 07:53:28,237 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 07:53:28,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:53:28,237 INFO L85 PathProgramCache]: Analyzing trace with hash -319371603, now seen corresponding path program 1 times [2021-11-07 07:53:28,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:53:28,238 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411748337] [2021-11-07 07:53:28,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:53:28,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:53:28,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:53:28,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:53:28,375 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:53:28,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411748337] [2021-11-07 07:53:28,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411748337] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:53:28,379 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:53:28,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 07:53:28,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837097463] [2021-11-07 07:53:28,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:53:28,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:53:28,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:53:28,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:53:28,382 INFO L87 Difference]: Start difference. First operand 8884 states and 12239 transitions. Second operand has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:53:28,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:53:28,777 INFO L93 Difference]: Finished difference Result 14105 states and 19475 transitions. [2021-11-07 07:53:28,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:53:28,778 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 0 states have call successors, (0), 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 145 [2021-11-07 07:53:28,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:53:28,791 INFO L225 Difference]: With dead ends: 14105 [2021-11-07 07:53:28,791 INFO L226 Difference]: Without dead ends: 5741 [2021-11-07 07:53:28,803 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:53:28,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5741 states. [2021-11-07 07:53:29,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5741 to 5741. [2021-11-07 07:53:29,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5741 states, 5736 states have (on average 1.3718619246861925) internal successors, (7869), 5740 states have internal predecessors, (7869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:53:29,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5741 states to 5741 states and 7869 transitions. [2021-11-07 07:53:29,227 INFO L78 Accepts]: Start accepts. Automaton has 5741 states and 7869 transitions. Word has length 145 [2021-11-07 07:53:29,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:53:29,228 INFO L470 AbstractCegarLoop]: Abstraction has 5741 states and 7869 transitions. [2021-11-07 07:53:29,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.25) internal successors, (145), 4 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:53:29,228 INFO L276 IsEmpty]: Start isEmpty. Operand 5741 states and 7869 transitions. [2021-11-07 07:53:29,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-11-07 07:53:29,238 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:53:29,238 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:53:29,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-07 07:53:29,239 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 07:53:29,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:53:29,239 INFO L85 PathProgramCache]: Analyzing trace with hash -14967049, now seen corresponding path program 1 times [2021-11-07 07:53:29,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:53:29,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812893483] [2021-11-07 07:53:29,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:53:29,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:53:29,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:53:29,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:53:29,297 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:53:29,297 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812893483] [2021-11-07 07:53:29,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812893483] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:53:29,297 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:53:29,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:53:29,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398938493] [2021-11-07 07:53:29,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:53:29,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:53:29,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:53:29,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:53:29,299 INFO L87 Difference]: Start difference. First operand 5741 states and 7869 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:53:30,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:53:30,022 INFO L93 Difference]: Finished difference Result 15336 states and 21177 transitions. [2021-11-07 07:53:30,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:53:30,023 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 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 153 [2021-11-07 07:53:30,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:53:30,048 INFO L225 Difference]: With dead ends: 15336 [2021-11-07 07:53:30,049 INFO L226 Difference]: Without dead ends: 10681 [2021-11-07 07:53:30,056 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 [2021-11-07 07:53:30,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10681 states. [2021-11-07 07:53:30,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10681 to 10661. [2021-11-07 07:53:30,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10661 states, 10656 states have (on average 1.3578265765765767) internal successors, (14469), 10660 states have internal predecessors, (14469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:53:31,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10661 states to 10661 states and 14469 transitions. [2021-11-07 07:53:31,053 INFO L78 Accepts]: Start accepts. Automaton has 10661 states and 14469 transitions. Word has length 153 [2021-11-07 07:53:31,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:53:31,053 INFO L470 AbstractCegarLoop]: Abstraction has 10661 states and 14469 transitions. [2021-11-07 07:53:31,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:53:31,054 INFO L276 IsEmpty]: Start isEmpty. Operand 10661 states and 14469 transitions. [2021-11-07 07:53:31,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-11-07 07:53:31,070 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:53:31,070 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:53:31,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-07 07:53:31,071 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 07:53:31,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:53:31,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1413245894, now seen corresponding path program 1 times [2021-11-07 07:53:31,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:53:31,072 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042860439] [2021-11-07 07:53:31,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:53:31,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:53:31,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:53:31,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:53:31,151 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:53:31,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042860439] [2021-11-07 07:53:31,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042860439] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:53:31,152 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:53:31,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:53:31,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499844915] [2021-11-07 07:53:31,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:53:31,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:53:31,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:53:31,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:53:31,155 INFO L87 Difference]: Start difference. First operand 10661 states and 14469 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:53:32,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:53:32,391 INFO L93 Difference]: Finished difference Result 28545 states and 39231 transitions. [2021-11-07 07:53:32,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:53:32,391 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 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 153 [2021-11-07 07:53:32,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:53:32,440 INFO L225 Difference]: With dead ends: 28545 [2021-11-07 07:53:32,441 INFO L226 Difference]: Without dead ends: 20276 [2021-11-07 07:53:32,452 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 [2021-11-07 07:53:32,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20276 states. [2021-11-07 07:53:33,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20276 to 20243. [2021-11-07 07:53:33,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20243 states, 20238 states have (on average 1.3573969759857694) internal successors, (27471), 20242 states have internal predecessors, (27471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:53:33,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20243 states to 20243 states and 27471 transitions. [2021-11-07 07:53:33,650 INFO L78 Accepts]: Start accepts. Automaton has 20243 states and 27471 transitions. Word has length 153 [2021-11-07 07:53:33,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:53:33,650 INFO L470 AbstractCegarLoop]: Abstraction has 20243 states and 27471 transitions. [2021-11-07 07:53:33,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:53:33,651 INFO L276 IsEmpty]: Start isEmpty. Operand 20243 states and 27471 transitions. [2021-11-07 07:53:33,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-11-07 07:53:33,693 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:53:33,694 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:53:33,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-07 07:53:33,694 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 07:53:33,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:53:33,695 INFO L85 PathProgramCache]: Analyzing trace with hash 424086943, now seen corresponding path program 1 times [2021-11-07 07:53:33,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:53:33,695 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218267302] [2021-11-07 07:53:33,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:53:33,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:53:33,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:53:33,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:53:33,830 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:53:33,830 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218267302] [2021-11-07 07:53:33,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218267302] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:53:33,830 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:53:33,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 07:53:33,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144537154] [2021-11-07 07:53:33,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:53:33,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:53:33,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:53:33,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:53:33,833 INFO L87 Difference]: Start difference. First operand 20243 states and 27471 transitions. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:53:35,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:53:35,692 INFO L93 Difference]: Finished difference Result 38202 states and 53840 transitions. [2021-11-07 07:53:35,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:53:35,692 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 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 153 [2021-11-07 07:53:35,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:53:35,781 INFO L225 Difference]: With dead ends: 38202 [2021-11-07 07:53:35,781 INFO L226 Difference]: Without dead ends: 31621 [2021-11-07 07:53:35,802 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:53:35,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31621 states. [2021-11-07 07:53:37,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31621 to 31619. [2021-11-07 07:53:37,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31619 states, 31614 states have (on average 1.3705004112102233) internal successors, (43327), 31618 states have internal predecessors, (43327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:53:37,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31619 states to 31619 states and 43327 transitions. [2021-11-07 07:53:37,940 INFO L78 Accepts]: Start accepts. Automaton has 31619 states and 43327 transitions. Word has length 153 [2021-11-07 07:53:37,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:53:37,941 INFO L470 AbstractCegarLoop]: Abstraction has 31619 states and 43327 transitions. [2021-11-07 07:53:37,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:53:37,941 INFO L276 IsEmpty]: Start isEmpty. Operand 31619 states and 43327 transitions. [2021-11-07 07:53:37,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-11-07 07:53:37,982 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:53:37,982 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:53:37,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-07 07:53:37,982 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 07:53:37,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:53:37,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1804095396, now seen corresponding path program 1 times [2021-11-07 07:53:37,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:53:37,983 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176805633] [2021-11-07 07:53:37,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:53:37,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:53:38,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:53:38,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:53:38,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:53:38,059 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176805633] [2021-11-07 07:53:38,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176805633] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:53:38,059 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:53:38,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:53:38,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635964570] [2021-11-07 07:53:38,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:53:38,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:53:38,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:53:38,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:53:38,061 INFO L87 Difference]: Start difference. First operand 31619 states and 43327 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:53:40,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:53:40,196 INFO L93 Difference]: Finished difference Result 58386 states and 83248 transitions. [2021-11-07 07:53:40,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:53:40,196 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 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 153 [2021-11-07 07:53:40,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:53:40,308 INFO L225 Difference]: With dead ends: 58386 [2021-11-07 07:53:40,308 INFO L226 Difference]: Without dead ends: 45677 [2021-11-07 07:53:40,340 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 [2021-11-07 07:53:40,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45677 states. [2021-11-07 07:53:43,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45677 to 45675. [2021-11-07 07:53:43,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45675 states, 45670 states have (on average 1.38119115393037) internal successors, (63079), 45674 states have internal predecessors, (63079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:53:43,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45675 states to 45675 states and 63079 transitions. [2021-11-07 07:53:43,627 INFO L78 Accepts]: Start accepts. Automaton has 45675 states and 63079 transitions. Word has length 153 [2021-11-07 07:53:43,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:53:43,628 INFO L470 AbstractCegarLoop]: Abstraction has 45675 states and 63079 transitions. [2021-11-07 07:53:43,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:53:43,628 INFO L276 IsEmpty]: Start isEmpty. Operand 45675 states and 63079 transitions. [2021-11-07 07:53:43,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-11-07 07:53:43,659 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:53:43,660 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:53:43,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-07 07:53:43,660 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 07:53:43,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:53:43,661 INFO L85 PathProgramCache]: Analyzing trace with hash -345875771, now seen corresponding path program 1 times [2021-11-07 07:53:43,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:53:43,661 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429783244] [2021-11-07 07:53:43,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:53:43,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:53:43,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:53:43,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:53:43,780 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:53:43,780 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429783244] [2021-11-07 07:53:43,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429783244] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:53:43,780 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:53:43,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 07:53:43,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662560215] [2021-11-07 07:53:43,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:53:43,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:53:43,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:53:43,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:53:43,782 INFO L87 Difference]: Start difference. First operand 45675 states and 63079 transitions. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:53:46,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:53:46,021 INFO L93 Difference]: Finished difference Result 72831 states and 100555 transitions. [2021-11-07 07:53:46,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:53:46,022 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 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 153 [2021-11-07 07:53:46,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:53:46,085 INFO L225 Difference]: With dead ends: 72831 [2021-11-07 07:53:46,085 INFO L226 Difference]: Without dead ends: 37198 [2021-11-07 07:53:46,111 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:53:46,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37198 states. [2021-11-07 07:53:48,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37198 to 37198. [2021-11-07 07:53:48,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37198 states, 37193 states have (on average 1.3766300110235796) internal successors, (51201), 37197 states have internal predecessors, (51201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:53:48,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37198 states to 37198 states and 51201 transitions. [2021-11-07 07:53:48,514 INFO L78 Accepts]: Start accepts. Automaton has 37198 states and 51201 transitions. Word has length 153 [2021-11-07 07:53:48,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:53:48,515 INFO L470 AbstractCegarLoop]: Abstraction has 37198 states and 51201 transitions. [2021-11-07 07:53:48,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:53:48,515 INFO L276 IsEmpty]: Start isEmpty. Operand 37198 states and 51201 transitions. [2021-11-07 07:53:48,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-11-07 07:53:48,547 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:53:48,548 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:53:48,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-07 07:53:48,548 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 07:53:48,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:53:48,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1760858661, now seen corresponding path program 1 times [2021-11-07 07:53:48,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:53:48,550 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977400785] [2021-11-07 07:53:48,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:53:48,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:53:48,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:53:48,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:53:48,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:53:48,783 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977400785] [2021-11-07 07:53:48,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977400785] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:53:48,784 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:53:48,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-07 07:53:48,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454090946] [2021-11-07 07:53:48,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 07:53:48,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:53:48,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 07:53:48,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-07 07:53:48,788 INFO L87 Difference]: Start difference. First operand 37198 states and 51201 transitions. Second operand has 8 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:53:52,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:53:52,980 INFO L93 Difference]: Finished difference Result 75651 states and 106363 transitions. [2021-11-07 07:53:52,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:53:52,981 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 0 states have call successors, (0), 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 159 [2021-11-07 07:53:52,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:53:53,077 INFO L225 Difference]: With dead ends: 75651 [2021-11-07 07:53:53,077 INFO L226 Difference]: Without dead ends: 60149 [2021-11-07 07:53:53,098 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-11-07 07:53:53,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60149 states. [2021-11-07 07:53:56,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60149 to 60147. [2021-11-07 07:53:57,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60147 states, 60142 states have (on average 1.3571713611120348) internal successors, (81623), 60146 states have internal predecessors, (81623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:53:57,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60147 states to 60147 states and 81623 transitions. [2021-11-07 07:53:57,141 INFO L78 Accepts]: Start accepts. Automaton has 60147 states and 81623 transitions. Word has length 159 [2021-11-07 07:53:57,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:53:57,142 INFO L470 AbstractCegarLoop]: Abstraction has 60147 states and 81623 transitions. [2021-11-07 07:53:57,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:53:57,142 INFO L276 IsEmpty]: Start isEmpty. Operand 60147 states and 81623 transitions. [2021-11-07 07:53:57,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-11-07 07:53:57,220 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:53:57,221 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:53:57,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-07 07:53:57,221 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 07:53:57,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:53:57,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1384607787, now seen corresponding path program 1 times [2021-11-07 07:53:57,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:53:57,222 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572157933] [2021-11-07 07:53:57,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:53:57,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:53:57,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:53:57,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:53:57,369 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:53:57,370 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572157933] [2021-11-07 07:53:57,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572157933] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:53:57,370 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:53:57,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 07:53:57,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061183493] [2021-11-07 07:53:57,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:53:57,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:53:57,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:53:57,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:53:57,372 INFO L87 Difference]: Start difference. First operand 60147 states and 81623 transitions. Second operand has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:54:01,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:54:01,078 INFO L93 Difference]: Finished difference Result 111555 states and 151448 transitions. [2021-11-07 07:54:01,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:54:01,078 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 0 states have call successors, (0), 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 159 [2021-11-07 07:54:01,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:54:01,162 INFO L225 Difference]: With dead ends: 111555 [2021-11-07 07:54:01,163 INFO L226 Difference]: Without dead ends: 51466 [2021-11-07 07:54:01,203 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:54:01,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51466 states. [2021-11-07 07:54:04,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51466 to 51466. [2021-11-07 07:54:04,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51466 states, 51461 states have (on average 1.3582713122558832) internal successors, (69898), 51465 states have internal predecessors, (69898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:54:04,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51466 states to 51466 states and 69898 transitions. [2021-11-07 07:54:04,910 INFO L78 Accepts]: Start accepts. Automaton has 51466 states and 69898 transitions. Word has length 159 [2021-11-07 07:54:04,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:54:04,910 INFO L470 AbstractCegarLoop]: Abstraction has 51466 states and 69898 transitions. [2021-11-07 07:54:04,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:54:04,911 INFO L276 IsEmpty]: Start isEmpty. Operand 51466 states and 69898 transitions. [2021-11-07 07:54:04,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-07 07:54:04,945 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:54:04,946 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:54:04,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-07 07:54:04,946 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-07 07:54:04,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:54:04,947 INFO L85 PathProgramCache]: Analyzing trace with hash 388359894, now seen corresponding path program 1 times [2021-11-07 07:54:04,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:54:04,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131311147] [2021-11-07 07:54:04,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:54:04,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:54:05,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:54:05,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:54:05,113 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:54:05,113 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131311147] [2021-11-07 07:54:05,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131311147] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:54:05,114 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:54:05,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 07:54:05,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767031801] [2021-11-07 07:54:05,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 07:54:05,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:54:05,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 07:54:05,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:54:05,116 INFO L87 Difference]: Start difference. First operand 51466 states and 69898 transitions. Second operand has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)