./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_floodmax.4.1.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf1ac6c-8dad-41da-b86d-f02f24afe519/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf1ac6c-8dad-41da-b86d-f02f24afe519/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf1ac6c-8dad-41da-b86d-f02f24afe519/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf1ac6c-8dad-41da-b86d-f02f24afe519/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_floodmax.4.1.ufo.UNBOUNDED.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf1ac6c-8dad-41da-b86d-f02f24afe519/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf1ac6c-8dad-41da-b86d-f02f24afe519/bin/uautomizer-IVEQpCNsaX --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 75ad91d1ba346b49105baf3c8411bd3b92e43cc8020f63db454a4318afdf99c1 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 10:42:22,862 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 10:42:22,872 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 10:42:22,938 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 10:42:22,939 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 10:42:22,945 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 10:42:22,947 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 10:42:22,952 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 10:42:22,955 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 10:42:22,962 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 10:42:22,963 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 10:42:22,965 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 10:42:22,966 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 10:42:22,969 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 10:42:22,972 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 10:42:22,978 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 10:42:22,980 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 10:42:22,982 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 10:42:22,984 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 10:42:22,994 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 10:42:22,997 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 10:42:22,998 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 10:42:23,003 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 10:42:23,004 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 10:42:23,015 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 10:42:23,016 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 10:42:23,017 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 10:42:23,019 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 10:42:23,020 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 10:42:23,022 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 10:42:23,023 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 10:42:23,025 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 10:42:23,027 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 10:42:23,029 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 10:42:23,031 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 10:42:23,031 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 10:42:23,032 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 10:42:23,033 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 10:42:23,033 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 10:42:23,034 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 10:42:23,035 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 10:42:23,037 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf1ac6c-8dad-41da-b86d-f02f24afe519/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-09 10:42:23,090 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 10:42:23,091 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 10:42:23,092 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 10:42:23,092 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 10:42:23,101 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 10:42:23,102 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 10:42:23,102 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 10:42:23,103 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 10:42:23,103 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 10:42:23,103 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 10:42:23,104 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 10:42:23,105 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 10:42:23,105 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 10:42:23,105 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 10:42:23,106 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 10:42:23,106 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 10:42:23,106 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 10:42:23,106 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 10:42:23,107 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 10:42:23,107 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 10:42:23,107 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 10:42:23,108 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 10:42:23,108 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 10:42:23,108 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 10:42:23,108 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 10:42:23,109 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 10:42:23,109 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 10:42:23,109 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 10:42:23,110 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 10:42:23,111 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 10:42:23,112 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 10:42:23,112 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 10:42:23,113 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_faf1ac6c-8dad-41da-b86d-f02f24afe519/bin/uautomizer-IVEQpCNsaX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf1ac6c-8dad-41da-b86d-f02f24afe519/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 75ad91d1ba346b49105baf3c8411bd3b92e43cc8020f63db454a4318afdf99c1 [2021-11-09 10:42:23,436 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 10:42:23,478 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 10:42:23,481 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 10:42:23,482 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 10:42:23,483 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 10:42:23,484 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf1ac6c-8dad-41da-b86d-f02f24afe519/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/seq-mthreaded/pals_floodmax.4.1.ufo.UNBOUNDED.pals.c [2021-11-09 10:42:23,575 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf1ac6c-8dad-41da-b86d-f02f24afe519/bin/uautomizer-IVEQpCNsaX/data/1c7bb24a3/d8c0843aed754519ad0abd9798efe843/FLAG4bc3dff80 [2021-11-09 10:42:24,279 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 10:42:24,280 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf1ac6c-8dad-41da-b86d-f02f24afe519/sv-benchmarks/c/seq-mthreaded/pals_floodmax.4.1.ufo.UNBOUNDED.pals.c [2021-11-09 10:42:24,307 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf1ac6c-8dad-41da-b86d-f02f24afe519/bin/uautomizer-IVEQpCNsaX/data/1c7bb24a3/d8c0843aed754519ad0abd9798efe843/FLAG4bc3dff80 [2021-11-09 10:42:24,480 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf1ac6c-8dad-41da-b86d-f02f24afe519/bin/uautomizer-IVEQpCNsaX/data/1c7bb24a3/d8c0843aed754519ad0abd9798efe843 [2021-11-09 10:42:24,483 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 10:42:24,485 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 10:42:24,488 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 10:42:24,488 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 10:42:24,492 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 10:42:24,493 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:42:24" (1/1) ... [2021-11-09 10:42:24,495 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20dcd34c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:42:24, skipping insertion in model container [2021-11-09 10:42:24,496 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:42:24" (1/1) ... [2021-11-09 10:42:24,504 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 10:42:24,582 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 10:42:25,015 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_faf1ac6c-8dad-41da-b86d-f02f24afe519/sv-benchmarks/c/seq-mthreaded/pals_floodmax.4.1.ufo.UNBOUNDED.pals.c[24372,24385] [2021-11-09 10:42:25,020 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 10:42:25,036 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 10:42:25,241 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_faf1ac6c-8dad-41da-b86d-f02f24afe519/sv-benchmarks/c/seq-mthreaded/pals_floodmax.4.1.ufo.UNBOUNDED.pals.c[24372,24385] [2021-11-09 10:42:25,255 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 10:42:25,283 INFO L208 MainTranslator]: Completed translation [2021-11-09 10:42:25,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:42:25 WrapperNode [2021-11-09 10:42:25,285 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 10:42:25,286 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 10:42:25,287 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 10:42:25,287 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 10:42:25,297 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:42:25" (1/1) ... [2021-11-09 10:42:25,321 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:42:25" (1/1) ... [2021-11-09 10:42:25,404 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 10:42:25,405 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 10:42:25,405 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 10:42:25,405 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 10:42:25,417 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:42:25" (1/1) ... [2021-11-09 10:42:25,418 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:42:25" (1/1) ... [2021-11-09 10:42:25,424 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:42:25" (1/1) ... [2021-11-09 10:42:25,425 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:42:25" (1/1) ... [2021-11-09 10:42:25,464 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:42:25" (1/1) ... [2021-11-09 10:42:25,497 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:42:25" (1/1) ... [2021-11-09 10:42:25,522 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:42:25" (1/1) ... [2021-11-09 10:42:25,531 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 10:42:25,535 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 10:42:25,535 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 10:42:25,536 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 10:42:25,539 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:42:25" (1/1) ... [2021-11-09 10:42:25,548 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 10:42:25,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf1ac6c-8dad-41da-b86d-f02f24afe519/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:42:25,580 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf1ac6c-8dad-41da-b86d-f02f24afe519/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 10:42:25,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf1ac6c-8dad-41da-b86d-f02f24afe519/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 10:42:25,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 10:42:25,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 10:42:25,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 10:42:25,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 10:42:27,133 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 10:42:27,134 INFO L299 CfgBuilder]: Removed 21 assume(true) statements. [2021-11-09 10:42:27,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:42:27 BoogieIcfgContainer [2021-11-09 10:42:27,137 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 10:42:27,139 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 10:42:27,139 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 10:42:27,144 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 10:42:27,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:42:24" (1/3) ... [2021-11-09 10:42:27,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@421b5ce5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:42:27, skipping insertion in model container [2021-11-09 10:42:27,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:42:25" (2/3) ... [2021-11-09 10:42:27,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@421b5ce5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:42:27, skipping insertion in model container [2021-11-09 10:42:27,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:42:27" (3/3) ... [2021-11-09 10:42:27,148 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.1.ufo.UNBOUNDED.pals.c [2021-11-09 10:42:27,155 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 10:42:27,155 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-09 10:42:27,231 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 10:42:27,242 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-09 10:42:27,242 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-09 10:42:27,279 INFO L276 IsEmpty]: Start isEmpty. Operand has 299 states, 297 states have (on average 1.7946127946127945) internal successors, (533), 298 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:27,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-09 10:42:27,297 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:42:27,298 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] [2021-11-09 10:42:27,299 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:42:27,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:42:27,306 INFO L85 PathProgramCache]: Analyzing trace with hash -223378612, now seen corresponding path program 1 times [2021-11-09 10:42:27,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:42:27,319 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450429872] [2021-11-09 10:42:27,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:42:27,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:42:27,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:42:27,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:42:27,903 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:42:27,903 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450429872] [2021-11-09 10:42:27,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450429872] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:42:27,904 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:42:27,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-09 10:42:27,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700008637] [2021-11-09 10:42:27,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-09 10:42:27,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:42:27,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-09 10:42:27,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 10:42:27,938 INFO L87 Difference]: Start difference. First operand has 299 states, 297 states have (on average 1.7946127946127945) internal successors, (533), 298 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:28,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:42:28,019 INFO L93 Difference]: Finished difference Result 415 states and 733 transitions. [2021-11-09 10:42:28,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-09 10:42:28,021 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2021-11-09 10:42:28,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:42:28,051 INFO L225 Difference]: With dead ends: 415 [2021-11-09 10:42:28,051 INFO L226 Difference]: Without dead ends: 295 [2021-11-09 10:42:28,056 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 10:42:28,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-11-09 10:42:28,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 295. [2021-11-09 10:42:28,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 294 states have (on average 1.7891156462585034) internal successors, (526), 294 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:28,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 526 transitions. [2021-11-09 10:42:28,158 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 526 transitions. Word has length 77 [2021-11-09 10:42:28,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:42:28,161 INFO L470 AbstractCegarLoop]: Abstraction has 295 states and 526 transitions. [2021-11-09 10:42:28,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:28,161 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 526 transitions. [2021-11-09 10:42:28,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-09 10:42:28,177 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:42:28,177 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] [2021-11-09 10:42:28,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 10:42:28,178 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:42:28,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:42:28,181 INFO L85 PathProgramCache]: Analyzing trace with hash -357392118, now seen corresponding path program 1 times [2021-11-09 10:42:28,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:42:28,182 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782874180] [2021-11-09 10:42:28,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:42:28,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:42:28,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:42:28,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:42:28,466 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:42:28,466 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782874180] [2021-11-09 10:42:28,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782874180] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:42:28,467 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:42:28,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 10:42:28,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563286123] [2021-11-09 10:42:28,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 10:42:28,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:42:28,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 10:42:28,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:42:28,474 INFO L87 Difference]: Start difference. First operand 295 states and 526 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:28,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:42:28,628 INFO L93 Difference]: Finished difference Result 414 states and 726 transitions. [2021-11-09 10:42:28,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 10:42:28,629 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2021-11-09 10:42:28,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:42:28,632 INFO L225 Difference]: With dead ends: 414 [2021-11-09 10:42:28,632 INFO L226 Difference]: Without dead ends: 295 [2021-11-09 10:42:28,634 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-09 10:42:28,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-11-09 10:42:28,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 295. [2021-11-09 10:42:28,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 294 states have (on average 1.6870748299319729) internal successors, (496), 294 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:28,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 496 transitions. [2021-11-09 10:42:28,659 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 496 transitions. Word has length 77 [2021-11-09 10:42:28,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:42:28,662 INFO L470 AbstractCegarLoop]: Abstraction has 295 states and 496 transitions. [2021-11-09 10:42:28,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:28,663 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 496 transitions. [2021-11-09 10:42:28,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-09 10:42:28,667 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:42:28,668 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] [2021-11-09 10:42:28,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-09 10:42:28,669 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:42:28,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:42:28,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1317126024, now seen corresponding path program 1 times [2021-11-09 10:42:28,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:42:28,671 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049718518] [2021-11-09 10:42:28,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:42:28,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:42:28,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:42:28,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:42:28,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:42:28,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049718518] [2021-11-09 10:42:28,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049718518] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:42:28,794 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:42:28,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:42:28,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340342052] [2021-11-09 10:42:28,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:42:28,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:42:28,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:42:28,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:42:28,798 INFO L87 Difference]: Start difference. First operand 295 states and 496 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:28,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:42:28,879 INFO L93 Difference]: Finished difference Result 514 states and 867 transitions. [2021-11-09 10:42:28,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:42:28,880 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2021-11-09 10:42:28,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:42:28,884 INFO L225 Difference]: With dead ends: 514 [2021-11-09 10:42:28,884 INFO L226 Difference]: Without dead ends: 399 [2021-11-09 10:42:28,886 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:42:28,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2021-11-09 10:42:28,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 396. [2021-11-09 10:42:28,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 395 states have (on average 1.678481012658228) internal successors, (663), 395 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:28,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 663 transitions. [2021-11-09 10:42:28,908 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 663 transitions. Word has length 106 [2021-11-09 10:42:28,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:42:28,909 INFO L470 AbstractCegarLoop]: Abstraction has 396 states and 663 transitions. [2021-11-09 10:42:28,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:28,909 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 663 transitions. [2021-11-09 10:42:28,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-09 10:42:28,912 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:42:28,912 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] [2021-11-09 10:42:28,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-09 10:42:28,913 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:42:28,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:42:28,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1632675295, now seen corresponding path program 1 times [2021-11-09 10:42:28,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:42:28,914 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083116614] [2021-11-09 10:42:28,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:42:28,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:42:28,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:42:29,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:42:29,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:42:29,026 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083116614] [2021-11-09 10:42:29,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083116614] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:42:29,032 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:42:29,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:42:29,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978646189] [2021-11-09 10:42:29,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:42:29,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:42:29,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:42:29,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:42:29,035 INFO L87 Difference]: Start difference. First operand 396 states and 663 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:29,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:42:29,111 INFO L93 Difference]: Finished difference Result 810 states and 1355 transitions. [2021-11-09 10:42:29,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:42:29,112 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2021-11-09 10:42:29,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:42:29,119 INFO L225 Difference]: With dead ends: 810 [2021-11-09 10:42:29,119 INFO L226 Difference]: Without dead ends: 594 [2021-11-09 10:42:29,123 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:42:29,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2021-11-09 10:42:29,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 590. [2021-11-09 10:42:29,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 589 states have (on average 1.6723259762308997) internal successors, (985), 589 states have internal predecessors, (985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:29,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 985 transitions. [2021-11-09 10:42:29,171 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 985 transitions. Word has length 109 [2021-11-09 10:42:29,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:42:29,173 INFO L470 AbstractCegarLoop]: Abstraction has 590 states and 985 transitions. [2021-11-09 10:42:29,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:29,174 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 985 transitions. [2021-11-09 10:42:29,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-09 10:42:29,177 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:42:29,177 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] [2021-11-09 10:42:29,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-09 10:42:29,178 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:42:29,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:42:29,182 INFO L85 PathProgramCache]: Analyzing trace with hash 478871864, now seen corresponding path program 1 times [2021-11-09 10:42:29,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:42:29,183 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91643173] [2021-11-09 10:42:29,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:42:29,183 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:42:29,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:42:29,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:42:29,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:42:29,343 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91643173] [2021-11-09 10:42:29,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91643173] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:42:29,344 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:42:29,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:42:29,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260169924] [2021-11-09 10:42:29,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:42:29,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:42:29,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:42:29,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:42:29,347 INFO L87 Difference]: Start difference. First operand 590 states and 985 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:29,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:42:29,417 INFO L93 Difference]: Finished difference Result 1374 states and 2287 transitions. [2021-11-09 10:42:29,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:42:29,418 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 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 112 [2021-11-09 10:42:29,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:42:29,426 INFO L225 Difference]: With dead ends: 1374 [2021-11-09 10:42:29,426 INFO L226 Difference]: Without dead ends: 964 [2021-11-09 10:42:29,428 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:42:29,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 964 states. [2021-11-09 10:42:29,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 964 to 958. [2021-11-09 10:42:29,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 958 states, 957 states have (on average 1.6603970741901777) internal successors, (1589), 957 states have internal predecessors, (1589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:29,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 958 states to 958 states and 1589 transitions. [2021-11-09 10:42:29,480 INFO L78 Accepts]: Start accepts. Automaton has 958 states and 1589 transitions. Word has length 112 [2021-11-09 10:42:29,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:42:29,481 INFO L470 AbstractCegarLoop]: Abstraction has 958 states and 1589 transitions. [2021-11-09 10:42:29,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:29,483 INFO L276 IsEmpty]: Start isEmpty. Operand 958 states and 1589 transitions. [2021-11-09 10:42:29,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-09 10:42:29,485 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:42:29,486 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] [2021-11-09 10:42:29,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-09 10:42:29,486 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:42:29,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:42:29,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1034962865, now seen corresponding path program 1 times [2021-11-09 10:42:29,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:42:29,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749301960] [2021-11-09 10:42:29,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:42:29,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:42:29,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:42:29,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:42:29,611 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:42:29,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749301960] [2021-11-09 10:42:29,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749301960] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:42:29,612 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:42:29,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:42:29,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259729375] [2021-11-09 10:42:29,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:42:29,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:42:29,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:42:29,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:42:29,618 INFO L87 Difference]: Start difference. First operand 958 states and 1589 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:29,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:42:29,698 INFO L93 Difference]: Finished difference Result 2442 states and 4031 transitions. [2021-11-09 10:42:29,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:42:29,699 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2021-11-09 10:42:29,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:42:29,718 INFO L225 Difference]: With dead ends: 2442 [2021-11-09 10:42:29,719 INFO L226 Difference]: Without dead ends: 1664 [2021-11-09 10:42:29,720 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:42:29,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1664 states. [2021-11-09 10:42:29,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1664 to 1654. [2021-11-09 10:42:29,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1654 states, 1653 states have (on average 1.6436781609195403) internal successors, (2717), 1653 states have internal predecessors, (2717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:29,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1654 states to 1654 states and 2717 transitions. [2021-11-09 10:42:29,790 INFO L78 Accepts]: Start accepts. Automaton has 1654 states and 2717 transitions. Word has length 115 [2021-11-09 10:42:29,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:42:29,791 INFO L470 AbstractCegarLoop]: Abstraction has 1654 states and 2717 transitions. [2021-11-09 10:42:29,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:29,792 INFO L276 IsEmpty]: Start isEmpty. Operand 1654 states and 2717 transitions. [2021-11-09 10:42:29,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-09 10:42:29,797 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:42:29,798 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] [2021-11-09 10:42:29,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-09 10:42:29,798 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:42:29,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:42:29,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1214749416, now seen corresponding path program 1 times [2021-11-09 10:42:29,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:42:29,805 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877055695] [2021-11-09 10:42:29,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:42:29,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:42:29,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:42:29,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:42:29,945 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:42:29,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877055695] [2021-11-09 10:42:29,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877055695] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:42:29,945 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:42:29,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-09 10:42:29,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110170039] [2021-11-09 10:42:29,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 10:42:29,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:42:29,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 10:42:29,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-09 10:42:29,948 INFO L87 Difference]: Start difference. First operand 1654 states and 2717 transitions. Second operand has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:30,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:42:30,321 INFO L93 Difference]: Finished difference Result 7756 states and 12840 transitions. [2021-11-09 10:42:30,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-09 10:42:30,322 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 0 states have call successors, (0), 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 118 [2021-11-09 10:42:30,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:42:30,363 INFO L225 Difference]: With dead ends: 7756 [2021-11-09 10:42:30,364 INFO L226 Difference]: Without dead ends: 6282 [2021-11-09 10:42:30,370 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-11-09 10:42:30,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6282 states. [2021-11-09 10:42:30,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6282 to 3728. [2021-11-09 10:42:30,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3728 states, 3727 states have (on average 1.6506573651730614) internal successors, (6152), 3727 states have internal predecessors, (6152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:30,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3728 states to 3728 states and 6152 transitions. [2021-11-09 10:42:30,558 INFO L78 Accepts]: Start accepts. Automaton has 3728 states and 6152 transitions. Word has length 118 [2021-11-09 10:42:30,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:42:30,559 INFO L470 AbstractCegarLoop]: Abstraction has 3728 states and 6152 transitions. [2021-11-09 10:42:30,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:30,560 INFO L276 IsEmpty]: Start isEmpty. Operand 3728 states and 6152 transitions. [2021-11-09 10:42:30,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-09 10:42:30,563 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:42:30,563 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] [2021-11-09 10:42:30,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-09 10:42:30,564 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:42:30,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:42:30,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1202886819, now seen corresponding path program 1 times [2021-11-09 10:42:30,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:42:30,565 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264549752] [2021-11-09 10:42:30,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:42:30,565 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:42:30,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:42:30,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:42:30,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:42:30,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264549752] [2021-11-09 10:42:30,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264549752] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:42:30,725 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:42:30,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 10:42:30,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382165573] [2021-11-09 10:42:30,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:42:30,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:42:30,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:42:30,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:42:30,728 INFO L87 Difference]: Start difference. First operand 3728 states and 6152 transitions. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:30,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:42:30,959 INFO L93 Difference]: Finished difference Result 8765 states and 14495 transitions. [2021-11-09 10:42:30,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 10:42:30,959 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2021-11-09 10:42:30,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:42:30,994 INFO L225 Difference]: With dead ends: 8765 [2021-11-09 10:42:30,995 INFO L226 Difference]: Without dead ends: 5217 [2021-11-09 10:42:31,001 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:42:31,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5217 states. [2021-11-09 10:42:31,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5217 to 5198. [2021-11-09 10:42:31,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5198 states, 5197 states have (on average 1.6511448912834328) internal successors, (8581), 5197 states have internal predecessors, (8581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:31,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5198 states to 5198 states and 8581 transitions. [2021-11-09 10:42:31,274 INFO L78 Accepts]: Start accepts. Automaton has 5198 states and 8581 transitions. Word has length 119 [2021-11-09 10:42:31,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:42:31,275 INFO L470 AbstractCegarLoop]: Abstraction has 5198 states and 8581 transitions. [2021-11-09 10:42:31,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:31,275 INFO L276 IsEmpty]: Start isEmpty. Operand 5198 states and 8581 transitions. [2021-11-09 10:42:31,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-09 10:42:31,279 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:42:31,279 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] [2021-11-09 10:42:31,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-09 10:42:31,280 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:42:31,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:42:31,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1004150655, now seen corresponding path program 1 times [2021-11-09 10:42:31,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:42:31,281 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403312129] [2021-11-09 10:42:31,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:42:31,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:42:31,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:42:31,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:42:31,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:42:31,383 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403312129] [2021-11-09 10:42:31,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403312129] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:42:31,383 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:42:31,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 10:42:31,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495478143] [2021-11-09 10:42:31,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:42:31,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:42:31,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:42:31,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:42:31,386 INFO L87 Difference]: Start difference. First operand 5198 states and 8581 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:31,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:42:31,797 INFO L93 Difference]: Finished difference Result 15486 states and 25644 transitions. [2021-11-09 10:42:31,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 10:42:31,798 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 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 120 [2021-11-09 10:42:31,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:42:31,887 INFO L225 Difference]: With dead ends: 15486 [2021-11-09 10:42:31,887 INFO L226 Difference]: Without dead ends: 10468 [2021-11-09 10:42:31,896 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:42:31,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10468 states. [2021-11-09 10:42:32,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10468 to 7675. [2021-11-09 10:42:32,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7675 states, 7674 states have (on average 1.6493354182955433) internal successors, (12657), 7674 states have internal predecessors, (12657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:32,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7675 states to 7675 states and 12657 transitions. [2021-11-09 10:42:32,385 INFO L78 Accepts]: Start accepts. Automaton has 7675 states and 12657 transitions. Word has length 120 [2021-11-09 10:42:32,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:42:32,386 INFO L470 AbstractCegarLoop]: Abstraction has 7675 states and 12657 transitions. [2021-11-09 10:42:32,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:32,386 INFO L276 IsEmpty]: Start isEmpty. Operand 7675 states and 12657 transitions. [2021-11-09 10:42:32,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-09 10:42:32,393 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:42:32,393 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] [2021-11-09 10:42:32,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-09 10:42:32,394 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:42:32,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:42:32,395 INFO L85 PathProgramCache]: Analyzing trace with hash -692698790, now seen corresponding path program 1 times [2021-11-09 10:42:32,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:42:32,397 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871526747] [2021-11-09 10:42:32,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:42:32,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:42:32,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:42:32,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:42:32,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:42:32,504 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871526747] [2021-11-09 10:42:32,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871526747] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:42:32,504 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:42:32,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 10:42:32,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465311562] [2021-11-09 10:42:32,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:42:32,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:42:32,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:42:32,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:42:32,507 INFO L87 Difference]: Start difference. First operand 7675 states and 12657 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:33,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:42:33,042 INFO L93 Difference]: Finished difference Result 22476 states and 37188 transitions. [2021-11-09 10:42:33,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 10:42:33,043 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2021-11-09 10:42:33,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:42:33,090 INFO L225 Difference]: With dead ends: 22476 [2021-11-09 10:42:33,090 INFO L226 Difference]: Without dead ends: 14981 [2021-11-09 10:42:33,106 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:42:33,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14981 states. [2021-11-09 10:42:33,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14981 to 11290. [2021-11-09 10:42:33,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11290 states, 11289 states have (on average 1.6475329967224732) internal successors, (18599), 11289 states have internal predecessors, (18599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:33,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11290 states to 11290 states and 18599 transitions. [2021-11-09 10:42:33,716 INFO L78 Accepts]: Start accepts. Automaton has 11290 states and 18599 transitions. Word has length 121 [2021-11-09 10:42:33,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:42:33,717 INFO L470 AbstractCegarLoop]: Abstraction has 11290 states and 18599 transitions. [2021-11-09 10:42:33,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:33,718 INFO L276 IsEmpty]: Start isEmpty. Operand 11290 states and 18599 transitions. [2021-11-09 10:42:33,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-09 10:42:33,800 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:42:33,800 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] [2021-11-09 10:42:33,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-09 10:42:33,801 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:42:33,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:42:33,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1392559596, now seen corresponding path program 1 times [2021-11-09 10:42:33,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:42:33,804 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878778165] [2021-11-09 10:42:33,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:42:33,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:42:33,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:42:33,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:42:33,897 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:42:33,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878778165] [2021-11-09 10:42:33,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878778165] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:42:33,897 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:42:33,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:42:33,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904206830] [2021-11-09 10:42:33,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:42:33,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:42:33,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:42:33,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:42:33,901 INFO L87 Difference]: Start difference. First operand 11290 states and 18599 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:34,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:42:34,415 INFO L93 Difference]: Finished difference Result 23345 states and 38443 transitions. [2021-11-09 10:42:34,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:42:34,415 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2021-11-09 10:42:34,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:42:34,464 INFO L225 Difference]: With dead ends: 23345 [2021-11-09 10:42:34,464 INFO L226 Difference]: Without dead ends: 16905 [2021-11-09 10:42:34,475 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 [2021-11-09 10:42:34,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16905 states. [2021-11-09 10:42:35,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16905 to 16903. [2021-11-09 10:42:35,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16903 states, 16902 states have (on average 1.6367885457342326) internal successors, (27665), 16902 states have internal predecessors, (27665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:35,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16903 states to 16903 states and 27665 transitions. [2021-11-09 10:42:35,318 INFO L78 Accepts]: Start accepts. Automaton has 16903 states and 27665 transitions. Word has length 121 [2021-11-09 10:42:35,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:42:35,319 INFO L470 AbstractCegarLoop]: Abstraction has 16903 states and 27665 transitions. [2021-11-09 10:42:35,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:35,320 INFO L276 IsEmpty]: Start isEmpty. Operand 16903 states and 27665 transitions. [2021-11-09 10:42:35,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-09 10:42:35,329 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:42:35,329 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] [2021-11-09 10:42:35,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-09 10:42:35,330 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:42:35,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:42:35,331 INFO L85 PathProgramCache]: Analyzing trace with hash -508078622, now seen corresponding path program 1 times [2021-11-09 10:42:35,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:42:35,331 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399927956] [2021-11-09 10:42:35,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:42:35,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:42:35,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:42:35,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:42:35,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:42:35,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399927956] [2021-11-09 10:42:35,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399927956] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:42:35,428 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:42:35,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:42:35,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861795505] [2021-11-09 10:42:35,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:42:35,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:42:35,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:42:35,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:42:35,431 INFO L87 Difference]: Start difference. First operand 16903 states and 27665 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:36,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:42:36,296 INFO L93 Difference]: Finished difference Result 36892 states and 60575 transitions. [2021-11-09 10:42:36,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:42:36,297 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2021-11-09 10:42:36,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:42:36,383 INFO L225 Difference]: With dead ends: 36892 [2021-11-09 10:42:36,384 INFO L226 Difference]: Without dead ends: 25348 [2021-11-09 10:42:36,408 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:42:36,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25348 states. [2021-11-09 10:42:37,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25348 to 25346. [2021-11-09 10:42:37,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25346 states, 25345 states have (on average 1.632787532057605) internal successors, (41383), 25345 states have internal predecessors, (41383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:37,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25346 states to 25346 states and 41383 transitions. [2021-11-09 10:42:37,552 INFO L78 Accepts]: Start accepts. Automaton has 25346 states and 41383 transitions. Word has length 121 [2021-11-09 10:42:37,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:42:37,552 INFO L470 AbstractCegarLoop]: Abstraction has 25346 states and 41383 transitions. [2021-11-09 10:42:37,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:37,553 INFO L276 IsEmpty]: Start isEmpty. Operand 25346 states and 41383 transitions. [2021-11-09 10:42:37,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-09 10:42:37,557 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:42:37,558 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] [2021-11-09 10:42:37,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-09 10:42:37,558 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:42:37,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:42:37,559 INFO L85 PathProgramCache]: Analyzing trace with hash 347276588, now seen corresponding path program 1 times [2021-11-09 10:42:37,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:42:37,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698410747] [2021-11-09 10:42:37,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:42:37,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:42:37,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:42:37,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:42:37,686 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:42:37,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698410747] [2021-11-09 10:42:37,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698410747] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:42:37,687 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:42:37,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:42:37,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050687237] [2021-11-09 10:42:37,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:42:37,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:42:37,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:42:37,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:42:37,690 INFO L87 Difference]: Start difference. First operand 25346 states and 41383 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:38,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:42:38,839 INFO L93 Difference]: Finished difference Result 55838 states and 91367 transitions. [2021-11-09 10:42:38,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:42:38,840 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2021-11-09 10:42:38,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:42:38,964 INFO L225 Difference]: With dead ends: 55838 [2021-11-09 10:42:38,964 INFO L226 Difference]: Without dead ends: 38213 [2021-11-09 10:42:38,991 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:42:39,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38213 states. [2021-11-09 10:42:40,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38213 to 38211. [2021-11-09 10:42:40,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38211 states, 38210 states have (on average 1.6260664747448312) internal successors, (62132), 38210 states have internal predecessors, (62132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:40,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38211 states to 38211 states and 62132 transitions. [2021-11-09 10:42:40,581 INFO L78 Accepts]: Start accepts. Automaton has 38211 states and 62132 transitions. Word has length 121 [2021-11-09 10:42:40,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:42:40,582 INFO L470 AbstractCegarLoop]: Abstraction has 38211 states and 62132 transitions. [2021-11-09 10:42:40,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:40,583 INFO L276 IsEmpty]: Start isEmpty. Operand 38211 states and 62132 transitions. [2021-11-09 10:42:40,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-09 10:42:40,586 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:42:40,586 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] [2021-11-09 10:42:40,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-09 10:42:40,587 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:42:40,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:42:40,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1776587102, now seen corresponding path program 1 times [2021-11-09 10:42:40,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:42:40,589 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796697883] [2021-11-09 10:42:40,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:42:40,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:42:40,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:42:40,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:42:40,676 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:42:40,676 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796697883] [2021-11-09 10:42:40,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796697883] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:42:40,677 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:42:40,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:42:40,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031193031] [2021-11-09 10:42:40,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:42:40,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:42:40,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:42:40,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:42:40,680 INFO L87 Difference]: Start difference. First operand 38211 states and 62132 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:42,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:42:42,399 INFO L93 Difference]: Finished difference Result 87554 states and 143240 transitions. [2021-11-09 10:42:42,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:42:42,400 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2021-11-09 10:42:42,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:42:42,547 INFO L225 Difference]: With dead ends: 87554 [2021-11-09 10:42:42,547 INFO L226 Difference]: Without dead ends: 58929 [2021-11-09 10:42:42,598 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:42:42,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58929 states. [2021-11-09 10:42:44,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58929 to 58927. [2021-11-09 10:42:44,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58927 states, 58926 states have (on average 1.621423480297322) internal successors, (95544), 58926 states have internal predecessors, (95544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:44,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58927 states to 58927 states and 95544 transitions. [2021-11-09 10:42:44,741 INFO L78 Accepts]: Start accepts. Automaton has 58927 states and 95544 transitions. Word has length 121 [2021-11-09 10:42:44,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:42:44,742 INFO L470 AbstractCegarLoop]: Abstraction has 58927 states and 95544 transitions. [2021-11-09 10:42:44,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:44,742 INFO L276 IsEmpty]: Start isEmpty. Operand 58927 states and 95544 transitions. [2021-11-09 10:42:44,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-09 10:42:44,744 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:42:44,745 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] [2021-11-09 10:42:44,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-09 10:42:44,745 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:42:44,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:42:44,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1586419690, now seen corresponding path program 1 times [2021-11-09 10:42:44,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:42:44,746 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772292646] [2021-11-09 10:42:44,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:42:44,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:42:44,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:42:44,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:42:44,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:42:44,837 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772292646] [2021-11-09 10:42:44,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772292646] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:42:44,837 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:42:44,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 10:42:44,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10527406] [2021-11-09 10:42:44,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:42:44,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:42:44,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:42:44,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:42:44,839 INFO L87 Difference]: Start difference. First operand 58927 states and 95544 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:47,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:42:47,786 INFO L93 Difference]: Finished difference Result 187433 states and 304657 transitions. [2021-11-09 10:42:47,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 10:42:47,787 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2021-11-09 10:42:47,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:42:48,291 INFO L225 Difference]: With dead ends: 187433 [2021-11-09 10:42:48,294 INFO L226 Difference]: Without dead ends: 128727 [2021-11-09 10:42:48,343 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:42:48,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128727 states. [2021-11-09 10:42:51,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128727 to 93570. [2021-11-09 10:42:51,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93570 states, 93569 states have (on average 1.6162617961076853) internal successors, (151232), 93569 states have internal predecessors, (151232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:51,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93570 states to 93570 states and 151232 transitions. [2021-11-09 10:42:51,892 INFO L78 Accepts]: Start accepts. Automaton has 93570 states and 151232 transitions. Word has length 122 [2021-11-09 10:42:51,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:42:51,893 INFO L470 AbstractCegarLoop]: Abstraction has 93570 states and 151232 transitions. [2021-11-09 10:42:51,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:51,893 INFO L276 IsEmpty]: Start isEmpty. Operand 93570 states and 151232 transitions. [2021-11-09 10:42:51,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-09 10:42:51,895 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:42:51,895 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] [2021-11-09 10:42:51,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-09 10:42:51,896 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:42:51,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:42:51,896 INFO L85 PathProgramCache]: Analyzing trace with hash -2052084626, now seen corresponding path program 1 times [2021-11-09 10:42:51,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:42:51,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160172213] [2021-11-09 10:42:51,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:42:51,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:42:51,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:42:52,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:42:52,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:42:52,116 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160172213] [2021-11-09 10:42:52,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160172213] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:42:52,119 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:42:52,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-09 10:42:52,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157249495] [2021-11-09 10:42:52,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 10:42:52,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:42:52,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 10:42:52,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-09 10:42:52,121 INFO L87 Difference]: Start difference. First operand 93570 states and 151232 transitions. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:54,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:42:54,861 INFO L93 Difference]: Finished difference Result 186923 states and 302107 transitions. [2021-11-09 10:42:54,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 10:42:54,862 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-11-09 10:42:54,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:42:55,238 INFO L225 Difference]: With dead ends: 186923 [2021-11-09 10:42:55,238 INFO L226 Difference]: Without dead ends: 93574 [2021-11-09 10:42:55,319 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-11-09 10:42:55,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93574 states. [2021-11-09 10:42:57,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93574 to 93570. [2021-11-09 10:42:57,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93570 states, 93569 states have (on average 1.6095822334320127) internal successors, (150607), 93569 states have internal predecessors, (150607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:58,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93570 states to 93570 states and 150607 transitions. [2021-11-09 10:42:58,108 INFO L78 Accepts]: Start accepts. Automaton has 93570 states and 150607 transitions. Word has length 124 [2021-11-09 10:42:58,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:42:58,109 INFO L470 AbstractCegarLoop]: Abstraction has 93570 states and 150607 transitions. [2021-11-09 10:42:58,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:42:58,109 INFO L276 IsEmpty]: Start isEmpty. Operand 93570 states and 150607 transitions. [2021-11-09 10:42:58,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-09 10:42:58,111 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:42:58,111 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] [2021-11-09 10:42:58,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-09 10:42:58,112 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:42:58,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:42:58,113 INFO L85 PathProgramCache]: Analyzing trace with hash -135993123, now seen corresponding path program 1 times [2021-11-09 10:42:58,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:42:58,113 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499698117] [2021-11-09 10:42:58,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:42:58,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:42:58,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:42:58,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:42:58,337 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:42:58,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499698117] [2021-11-09 10:42:58,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499698117] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:42:58,337 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:42:58,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-09 10:42:58,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936120584] [2021-11-09 10:42:58,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 10:42:58,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:42:58,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 10:42:58,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-09 10:42:58,340 INFO L87 Difference]: Start difference. First operand 93570 states and 150607 transitions. Second operand has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:43:03,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:43:03,095 INFO L93 Difference]: Finished difference Result 288998 states and 466645 transitions. [2021-11-09 10:43:03,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 10:43:03,095 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2021-11-09 10:43:03,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:43:03,449 INFO L225 Difference]: With dead ends: 288998 [2021-11-09 10:43:03,449 INFO L226 Difference]: Without dead ends: 195649 [2021-11-09 10:43:03,513 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-09 10:43:03,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195649 states. [2021-11-09 10:43:08,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195649 to 174943. [2021-11-09 10:43:08,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174943 states, 174942 states have (on average 1.604743286346332) internal successors, (280737), 174942 states have internal predecessors, (280737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:43:09,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174943 states to 174943 states and 280737 transitions. [2021-11-09 10:43:09,134 INFO L78 Accepts]: Start accepts. Automaton has 174943 states and 280737 transitions. Word has length 127 [2021-11-09 10:43:09,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:43:09,134 INFO L470 AbstractCegarLoop]: Abstraction has 174943 states and 280737 transitions. [2021-11-09 10:43:09,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:43:09,134 INFO L276 IsEmpty]: Start isEmpty. Operand 174943 states and 280737 transitions. [2021-11-09 10:43:09,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-09 10:43:09,136 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:43:09,136 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] [2021-11-09 10:43:09,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-09 10:43:09,137 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:43:09,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:43:09,138 INFO L85 PathProgramCache]: Analyzing trace with hash -352164905, now seen corresponding path program 1 times [2021-11-09 10:43:09,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:43:09,138 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877107087] [2021-11-09 10:43:09,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:43:09,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:43:09,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:43:09,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:43:09,301 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:43:09,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877107087] [2021-11-09 10:43:09,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877107087] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:43:09,302 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:43:09,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 10:43:09,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730922086] [2021-11-09 10:43:09,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 10:43:09,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:43:09,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 10:43:09,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:43:09,305 INFO L87 Difference]: Start difference. First operand 174943 states and 280737 transitions. Second operand has 5 states, 5 states have (on average 25.6) internal successors, (128), 5 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:43:16,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:43:16,843 INFO L93 Difference]: Finished difference Result 340615 states and 542003 transitions. [2021-11-09 10:43:16,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 10:43:16,843 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 5 states have internal predecessors, (128), 0 states have call successors, (0), 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 128 [2021-11-09 10:43:16,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:43:17,929 INFO L225 Difference]: With dead ends: 340615 [2021-11-09 10:43:17,929 INFO L226 Difference]: Without dead ends: 340613 [2021-11-09 10:43:17,994 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-09 10:43:18,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340613 states.