./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label51.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bc6303-34f7-4fdc-94e4-8a93d6b484e4/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bc6303-34f7-4fdc-94e4-8a93d6b484e4/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bc6303-34f7-4fdc-94e4-8a93d6b484e4/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bc6303-34f7-4fdc-94e4-8a93d6b484e4/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label51.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bc6303-34f7-4fdc-94e4-8a93d6b484e4/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bc6303-34f7-4fdc-94e4-8a93d6b484e4/bin/uautomizer-UnR33cPsHg --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 39ef6d062a4ff56ba1e3913ade729d3f60e638b9dea34b0ea6935ef8cddd75d2 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:52:09,837 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:52:09,841 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:52:09,899 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:52:09,900 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:52:09,902 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:52:09,904 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:52:09,907 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:52:09,909 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:52:09,911 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:52:09,912 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:52:09,914 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:52:09,915 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:52:09,917 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:52:09,919 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:52:09,921 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:52:09,923 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:52:09,924 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:52:09,927 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:52:09,931 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:52:09,933 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:52:09,936 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:52:09,937 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:52:09,938 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:52:09,943 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:52:09,944 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:52:09,944 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:52:09,946 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:52:09,947 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:52:09,948 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:52:09,949 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:52:09,954 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:52:09,956 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:52:09,958 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:52:09,960 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:52:09,960 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:52:09,961 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:52:09,962 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:52:09,962 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:52:09,964 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:52:09,965 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:52:09,966 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bc6303-34f7-4fdc-94e4-8a93d6b484e4/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 09:52:10,013 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:52:10,014 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:52:10,015 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:52:10,015 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:52:10,018 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:52:10,018 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:52:10,018 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:52:10,018 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:52:10,019 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:52:10,019 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:52:10,020 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:52:10,020 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:52:10,021 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 09:52:10,021 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:52:10,021 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 09:52:10,021 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:52:10,022 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:52:10,022 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:52:10,022 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 09:52:10,022 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:52:10,023 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:52:10,023 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:52:10,023 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:52:10,024 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:52:10,024 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:52:10,024 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 09:52:10,024 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:52:10,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 09:52:10,025 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 09:52:10,027 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 09:52:10,027 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 09:52:10,027 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:52:10,028 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_b8bc6303-34f7-4fdc-94e4-8a93d6b484e4/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bc6303-34f7-4fdc-94e4-8a93d6b484e4/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39ef6d062a4ff56ba1e3913ade729d3f60e638b9dea34b0ea6935ef8cddd75d2 [2021-10-28 09:52:10,364 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:52:10,397 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:52:10,400 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:52:10,402 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:52:10,403 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:52:10,404 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bc6303-34f7-4fdc-94e4-8a93d6b484e4/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/eca-rers2012/Problem01_label51.c [2021-10-28 09:52:10,482 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bc6303-34f7-4fdc-94e4-8a93d6b484e4/bin/uautomizer-UnR33cPsHg/data/dd7953736/d309c27f2d1f41f8bb3b7352da53363e/FLAGe3875bcab [2021-10-28 09:52:11,102 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:52:11,103 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bc6303-34f7-4fdc-94e4-8a93d6b484e4/sv-benchmarks/c/eca-rers2012/Problem01_label51.c [2021-10-28 09:52:11,136 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bc6303-34f7-4fdc-94e4-8a93d6b484e4/bin/uautomizer-UnR33cPsHg/data/dd7953736/d309c27f2d1f41f8bb3b7352da53363e/FLAGe3875bcab [2021-10-28 09:52:11,338 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bc6303-34f7-4fdc-94e4-8a93d6b484e4/bin/uautomizer-UnR33cPsHg/data/dd7953736/d309c27f2d1f41f8bb3b7352da53363e [2021-10-28 09:52:11,341 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:52:11,342 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:52:11,344 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:52:11,344 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:52:11,348 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:52:11,349 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:52:11" (1/1) ... [2021-10-28 09:52:11,351 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30db66a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:52:11, skipping insertion in model container [2021-10-28 09:52:11,351 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:52:11" (1/1) ... [2021-10-28 09:52:11,359 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:52:11,406 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:52:11,770 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_b8bc6303-34f7-4fdc-94e4-8a93d6b484e4/sv-benchmarks/c/eca-rers2012/Problem01_label51.c[18730,18743] [2021-10-28 09:52:11,826 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:52:11,836 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:52:11,919 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_b8bc6303-34f7-4fdc-94e4-8a93d6b484e4/sv-benchmarks/c/eca-rers2012/Problem01_label51.c[18730,18743] [2021-10-28 09:52:11,931 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:52:11,946 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:52:11,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:52:11 WrapperNode [2021-10-28 09:52:11,947 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:52:11,948 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:52:11,948 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:52:11,949 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:52:11,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:52:11" (1/1) ... [2021-10-28 09:52:11,983 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:52:11" (1/1) ... [2021-10-28 09:52:12,052 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:52:12,054 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:52:12,054 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:52:12,055 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:52:12,063 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:52:11" (1/1) ... [2021-10-28 09:52:12,063 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:52:11" (1/1) ... [2021-10-28 09:52:12,076 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:52:11" (1/1) ... [2021-10-28 09:52:12,080 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:52:11" (1/1) ... [2021-10-28 09:52:12,117 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:52:11" (1/1) ... [2021-10-28 09:52:12,127 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:52:11" (1/1) ... [2021-10-28 09:52:12,148 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:52:11" (1/1) ... [2021-10-28 09:52:12,157 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:52:12,158 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:52:12,158 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:52:12,159 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:52:12,160 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:52:11" (1/1) ... [2021-10-28 09:52:12,171 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:52:12,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bc6303-34f7-4fdc-94e4-8a93d6b484e4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:52:12,203 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bc6303-34f7-4fdc-94e4-8a93d6b484e4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:52:12,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bc6303-34f7-4fdc-94e4-8a93d6b484e4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:52:12,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:52:12,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:52:12,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:52:12,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:52:13,495 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:52:13,496 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-28 09:52:13,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:52:13 BoogieIcfgContainer [2021-10-28 09:52:13,535 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:52:13,537 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:52:13,537 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:52:13,543 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:52:13,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:52:11" (1/3) ... [2021-10-28 09:52:13,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@198544ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:52:13, skipping insertion in model container [2021-10-28 09:52:13,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:52:11" (2/3) ... [2021-10-28 09:52:13,546 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@198544ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:52:13, skipping insertion in model container [2021-10-28 09:52:13,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:52:13" (3/3) ... [2021-10-28 09:52:13,548 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label51.c [2021-10-28 09:52:13,558 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:52:13,558 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 09:52:13,610 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:52:13,619 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 [2021-10-28 09:52:13,620 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 09:52:13,650 INFO L276 IsEmpty]: Start isEmpty. Operand has 198 states, 196 states have (on average 1.6683673469387754) internal successors, (327), 197 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:52:13,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-10-28 09:52:13,665 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:52:13,666 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] [2021-10-28 09:52:13,667 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:52:13,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:52:13,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1145971337, now seen corresponding path program 1 times [2021-10-28 09:52:13,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:52:13,704 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845525537] [2021-10-28 09:52:13,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:52:13,705 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:52:13,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:14,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:52:14,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:52:14,153 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845525537] [2021-10-28 09:52:14,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845525537] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:52:14,155 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:52:14,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 09:52:14,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775597856] [2021-10-28 09:52:14,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:52:14,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:52:14,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:52:14,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:52:14,186 INFO L87 Difference]: Start difference. First operand has 198 states, 196 states have (on average 1.6683673469387754) internal successors, (327), 197 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 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) [2021-10-28 09:52:14,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:52:14,997 INFO L93 Difference]: Finished difference Result 528 states and 915 transitions. [2021-10-28 09:52:14,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:52:14,999 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 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 [2021-10-28 09:52:15,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:52:15,024 INFO L225 Difference]: With dead ends: 528 [2021-10-28 09:52:15,024 INFO L226 Difference]: Without dead ends: 266 [2021-10-28 09:52:15,032 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:52:15,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-10-28 09:52:15,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2021-10-28 09:52:15,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 265 states have (on average 1.4339622641509433) internal successors, (380), 265 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:52:15,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 380 transitions. [2021-10-28 09:52:15,117 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 380 transitions. Word has length 106 [2021-10-28 09:52:15,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:52:15,118 INFO L470 AbstractCegarLoop]: Abstraction has 266 states and 380 transitions. [2021-10-28 09:52:15,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 2 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) [2021-10-28 09:52:15,118 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 380 transitions. [2021-10-28 09:52:15,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-10-28 09:52:15,124 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:52:15,125 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:52:15,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 09:52:15,126 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:52:15,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:52:15,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1083364170, now seen corresponding path program 1 times [2021-10-28 09:52:15,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:52:15,131 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574284000] [2021-10-28 09:52:15,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:52:15,132 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:52:15,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:15,239 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:52:15,239 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:52:15,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574284000] [2021-10-28 09:52:15,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574284000] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:52:15,240 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:52:15,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 09:52:15,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499185054] [2021-10-28 09:52:15,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:52:15,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:52:15,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:52:15,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:52:15,244 INFO L87 Difference]: Start difference. First operand 266 states and 380 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 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) [2021-10-28 09:52:15,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:52:15,726 INFO L93 Difference]: Finished difference Result 792 states and 1135 transitions. [2021-10-28 09:52:15,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:52:15,729 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 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 [2021-10-28 09:52:15,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:52:15,732 INFO L225 Difference]: With dead ends: 792 [2021-10-28 09:52:15,732 INFO L226 Difference]: Without dead ends: 528 [2021-10-28 09:52:15,734 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:52:15,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2021-10-28 09:52:15,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 528. [2021-10-28 09:52:15,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 527 states have (on average 1.3453510436432639) internal successors, (709), 527 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:52:15,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 709 transitions. [2021-10-28 09:52:15,772 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 709 transitions. Word has length 112 [2021-10-28 09:52:15,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:52:15,773 INFO L470 AbstractCegarLoop]: Abstraction has 528 states and 709 transitions. [2021-10-28 09:52:15,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 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) [2021-10-28 09:52:15,774 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 709 transitions. [2021-10-28 09:52:15,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-10-28 09:52:15,780 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:52:15,780 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:52:15,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 09:52:15,781 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:52:15,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:52:15,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1869328822, now seen corresponding path program 1 times [2021-10-28 09:52:15,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:52:15,782 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072225502] [2021-10-28 09:52:15,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:52:15,782 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:52:15,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:16,060 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:52:16,061 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:52:16,062 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072225502] [2021-10-28 09:52:16,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072225502] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:52:16,064 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:52:16,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:52:16,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459396794] [2021-10-28 09:52:16,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:52:16,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:52:16,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:52:16,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:52:16,070 INFO L87 Difference]: Start difference. First operand 528 states and 709 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:52:16,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:52:16,889 INFO L93 Difference]: Finished difference Result 1411 states and 1882 transitions. [2021-10-28 09:52:16,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:52:16,890 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2021-10-28 09:52:16,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:52:16,896 INFO L225 Difference]: With dead ends: 1411 [2021-10-28 09:52:16,896 INFO L226 Difference]: Without dead ends: 790 [2021-10-28 09:52:16,898 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:52:16,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2021-10-28 09:52:16,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 659. [2021-10-28 09:52:16,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 658 states have (on average 1.1899696048632218) internal successors, (783), 658 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:52:16,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 783 transitions. [2021-10-28 09:52:16,924 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 783 transitions. Word has length 113 [2021-10-28 09:52:16,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:52:16,924 INFO L470 AbstractCegarLoop]: Abstraction has 659 states and 783 transitions. [2021-10-28 09:52:16,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:52:16,925 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 783 transitions. [2021-10-28 09:52:16,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-10-28 09:52:16,928 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:52:16,929 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:52:16,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 09:52:16,929 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:52:16,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:52:16,930 INFO L85 PathProgramCache]: Analyzing trace with hash 2123843848, now seen corresponding path program 1 times [2021-10-28 09:52:16,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:52:16,931 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116831583] [2021-10-28 09:52:16,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:52:16,931 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:52:16,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:17,019 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 14 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:52:17,019 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:52:17,020 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116831583] [2021-10-28 09:52:17,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116831583] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:52:17,020 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307092880] [2021-10-28 09:52:17,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:52:17,021 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:52:17,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bc6303-34f7-4fdc-94e4-8a93d6b484e4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:52:17,030 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bc6303-34f7-4fdc-94e4-8a93d6b484e4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:52:17,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bc6303-34f7-4fdc-94e4-8a93d6b484e4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 09:52:17,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:17,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:52:17,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:52:17,774 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-28 09:52:17,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307092880] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:52:17,775 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:52:17,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2021-10-28 09:52:17,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089640773] [2021-10-28 09:52:17,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:52:17,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:52:17,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:52:17,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:52:17,780 INFO L87 Difference]: Start difference. First operand 659 states and 783 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 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) [2021-10-28 09:52:18,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:52:18,191 INFO L93 Difference]: Finished difference Result 1709 states and 2040 transitions. [2021-10-28 09:52:18,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:52:18,192 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 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 121 [2021-10-28 09:52:18,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:52:18,199 INFO L225 Difference]: With dead ends: 1709 [2021-10-28 09:52:18,199 INFO L226 Difference]: Without dead ends: 921 [2021-10-28 09:52:18,200 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:52:18,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 921 states. [2021-10-28 09:52:18,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 921 to 790. [2021-10-28 09:52:18,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 790 states, 789 states have (on average 1.1787072243346008) internal successors, (930), 789 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:52:18,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 790 states to 790 states and 930 transitions. [2021-10-28 09:52:18,226 INFO L78 Accepts]: Start accepts. Automaton has 790 states and 930 transitions. Word has length 121 [2021-10-28 09:52:18,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:52:18,227 INFO L470 AbstractCegarLoop]: Abstraction has 790 states and 930 transitions. [2021-10-28 09:52:18,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 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) [2021-10-28 09:52:18,228 INFO L276 IsEmpty]: Start isEmpty. Operand 790 states and 930 transitions. [2021-10-28 09:52:18,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-10-28 09:52:18,230 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:52:18,231 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:52:18,273 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bc6303-34f7-4fdc-94e4-8a93d6b484e4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-28 09:52:18,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bc6303-34f7-4fdc-94e4-8a93d6b484e4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:52:18,447 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:52:18,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:52:18,448 INFO L85 PathProgramCache]: Analyzing trace with hash 644801539, now seen corresponding path program 1 times [2021-10-28 09:52:18,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:52:18,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056415475] [2021-10-28 09:52:18,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:52:18,449 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:52:18,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:18,561 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:52:18,561 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:52:18,562 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056415475] [2021-10-28 09:52:18,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056415475] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:52:18,563 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577498387] [2021-10-28 09:52:18,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:52:18,563 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:52:18,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bc6303-34f7-4fdc-94e4-8a93d6b484e4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:52:18,564 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bc6303-34f7-4fdc-94e4-8a93d6b484e4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:52:18,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bc6303-34f7-4fdc-94e4-8a93d6b484e4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-28 09:52:18,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:18,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:52:18,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:52:19,081 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-28 09:52:19,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577498387] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:52:19,082 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:52:19,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2021-10-28 09:52:19,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931939502] [2021-10-28 09:52:19,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:52:19,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:52:19,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:52:19,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:52:19,084 INFO L87 Difference]: Start difference. First operand 790 states and 930 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) [2021-10-28 09:52:19,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:52:19,547 INFO L93 Difference]: Finished difference Result 2364 states and 2785 transitions. [2021-10-28 09:52:19,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:52:19,548 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 123 [2021-10-28 09:52:19,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:52:19,557 INFO L225 Difference]: With dead ends: 2364 [2021-10-28 09:52:19,558 INFO L226 Difference]: Without dead ends: 1445 [2021-10-28 09:52:19,559 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:52:19,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1445 states. [2021-10-28 09:52:19,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1445 to 1445. [2021-10-28 09:52:19,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1444 states have (on average 1.1551246537396123) internal successors, (1668), 1444 states have internal predecessors, (1668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:52:19,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 1668 transitions. [2021-10-28 09:52:19,604 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 1668 transitions. Word has length 123 [2021-10-28 09:52:19,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:52:19,610 INFO L470 AbstractCegarLoop]: Abstraction has 1445 states and 1668 transitions. [2021-10-28 09:52:19,611 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) [2021-10-28 09:52:19,611 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 1668 transitions. [2021-10-28 09:52:19,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-10-28 09:52:19,615 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:52:19,617 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:52:19,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bc6303-34f7-4fdc-94e4-8a93d6b484e4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-28 09:52:19,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bc6303-34f7-4fdc-94e4-8a93d6b484e4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:52:19,839 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:52:19,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:52:19,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1963549498, now seen corresponding path program 1 times [2021-10-28 09:52:19,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:52:19,840 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780787339] [2021-10-28 09:52:19,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:52:19,840 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:52:19,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:19,914 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-28 09:52:19,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:52:19,915 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780787339] [2021-10-28 09:52:19,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780787339] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:52:19,915 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:52:19,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 09:52:19,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114113032] [2021-10-28 09:52:19,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:52:19,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:52:19,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:52:19,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:52:19,918 INFO L87 Difference]: Start difference. First operand 1445 states and 1668 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 2 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:52:20,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:52:20,382 INFO L93 Difference]: Finished difference Result 3019 states and 3503 transitions. [2021-10-28 09:52:20,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:52:20,385 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 2 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2021-10-28 09:52:20,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:52:20,396 INFO L225 Difference]: With dead ends: 3019 [2021-10-28 09:52:20,396 INFO L226 Difference]: Without dead ends: 1707 [2021-10-28 09:52:20,398 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:52:20,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1707 states. [2021-10-28 09:52:20,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1707 to 1707. [2021-10-28 09:52:20,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1707 states, 1706 states have (on average 1.1406799531066822) internal successors, (1946), 1706 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:52:20,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1707 states to 1707 states and 1946 transitions. [2021-10-28 09:52:20,448 INFO L78 Accepts]: Start accepts. Automaton has 1707 states and 1946 transitions. Word has length 140 [2021-10-28 09:52:20,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:52:20,448 INFO L470 AbstractCegarLoop]: Abstraction has 1707 states and 1946 transitions. [2021-10-28 09:52:20,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 2 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:52:20,448 INFO L276 IsEmpty]: Start isEmpty. Operand 1707 states and 1946 transitions. [2021-10-28 09:52:20,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-10-28 09:52:20,453 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:52:20,454 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:52:20,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 09:52:20,454 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:52:20,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:52:20,455 INFO L85 PathProgramCache]: Analyzing trace with hash 712915108, now seen corresponding path program 1 times [2021-10-28 09:52:20,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:52:20,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679602555] [2021-10-28 09:52:20,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:52:20,456 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:52:20,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:20,530 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-28 09:52:20,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:52:20,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679602555] [2021-10-28 09:52:20,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679602555] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:52:20,531 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:52:20,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:52:20,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772478100] [2021-10-28 09:52:20,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:52:20,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:52:20,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:52:20,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:52:20,535 INFO L87 Difference]: Start difference. First operand 1707 states and 1946 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 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) [2021-10-28 09:52:20,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:52:20,956 INFO L93 Difference]: Finished difference Result 3805 states and 4353 transitions. [2021-10-28 09:52:20,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:52:20,957 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 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 149 [2021-10-28 09:52:20,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:52:20,970 INFO L225 Difference]: With dead ends: 3805 [2021-10-28 09:52:20,970 INFO L226 Difference]: Without dead ends: 2231 [2021-10-28 09:52:20,975 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 [2021-10-28 09:52:20,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2231 states. [2021-10-28 09:52:21,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2231 to 1969. [2021-10-28 09:52:21,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1969 states, 1968 states have (on average 1.1402439024390243) internal successors, (2244), 1968 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:52:21,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1969 states to 1969 states and 2244 transitions. [2021-10-28 09:52:21,034 INFO L78 Accepts]: Start accepts. Automaton has 1969 states and 2244 transitions. Word has length 149 [2021-10-28 09:52:21,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:52:21,035 INFO L470 AbstractCegarLoop]: Abstraction has 1969 states and 2244 transitions. [2021-10-28 09:52:21,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 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) [2021-10-28 09:52:21,035 INFO L276 IsEmpty]: Start isEmpty. Operand 1969 states and 2244 transitions. [2021-10-28 09:52:21,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-10-28 09:52:21,041 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:52:21,041 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:52:21,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-28 09:52:21,042 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:52:21,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:52:21,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1892191701, now seen corresponding path program 1 times [2021-10-28 09:52:21,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:52:21,043 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715385762] [2021-10-28 09:52:21,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:52:21,044 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:52:21,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:21,132 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-28 09:52:21,133 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:52:21,133 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715385762] [2021-10-28 09:52:21,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715385762] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:52:21,134 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:52:21,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:52:21,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52188061] [2021-10-28 09:52:21,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:52:21,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:52:21,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:52:21,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:52:21,136 INFO L87 Difference]: Start difference. First operand 1969 states and 2244 transitions. Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:52:21,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:52:21,820 INFO L93 Difference]: Finished difference Result 4067 states and 4651 transitions. [2021-10-28 09:52:21,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:52:21,821 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 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 155 [2021-10-28 09:52:21,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:52:21,835 INFO L225 Difference]: With dead ends: 4067 [2021-10-28 09:52:21,835 INFO L226 Difference]: Without dead ends: 2231 [2021-10-28 09:52:21,838 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:52:21,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2231 states. [2021-10-28 09:52:21,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2231 to 2100. [2021-10-28 09:52:21,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2100 states, 2099 states have (on average 1.132444020962363) internal successors, (2377), 2099 states have internal predecessors, (2377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:52:21,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2100 states to 2100 states and 2377 transitions. [2021-10-28 09:52:21,898 INFO L78 Accepts]: Start accepts. Automaton has 2100 states and 2377 transitions. Word has length 155 [2021-10-28 09:52:21,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:52:21,899 INFO L470 AbstractCegarLoop]: Abstraction has 2100 states and 2377 transitions. [2021-10-28 09:52:21,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:52:21,902 INFO L276 IsEmpty]: Start isEmpty. Operand 2100 states and 2377 transitions. [2021-10-28 09:52:21,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-10-28 09:52:21,908 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:52:21,908 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:52:21,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-28 09:52:21,909 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:52:21,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:52:21,910 INFO L85 PathProgramCache]: Analyzing trace with hash 101584918, now seen corresponding path program 1 times [2021-10-28 09:52:21,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:52:21,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238503274] [2021-10-28 09:52:21,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:52:21,913 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:52:21,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:22,011 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 66 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:52:22,012 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:52:22,014 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238503274] [2021-10-28 09:52:22,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238503274] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:52:22,020 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524445845] [2021-10-28 09:52:22,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:52:22,020 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:52:22,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bc6303-34f7-4fdc-94e4-8a93d6b484e4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:52:22,025 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bc6303-34f7-4fdc-94e4-8a93d6b484e4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:52:22,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bc6303-34f7-4fdc-94e4-8a93d6b484e4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-28 09:52:22,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:22,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 09:52:22,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:52:22,681 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-10-28 09:52:22,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524445845] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:52:22,682 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:52:22,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2021-10-28 09:52:22,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258599557] [2021-10-28 09:52:22,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:52:22,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:52:22,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:52:22,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:52:22,687 INFO L87 Difference]: Start difference. First operand 2100 states and 2377 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:52:23,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:52:23,102 INFO L93 Difference]: Finished difference Result 4722 states and 5397 transitions. [2021-10-28 09:52:23,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:52:23,103 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 173 [2021-10-28 09:52:23,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:52:23,117 INFO L225 Difference]: With dead ends: 4722 [2021-10-28 09:52:23,118 INFO L226 Difference]: Without dead ends: 2755 [2021-10-28 09:52:23,120 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:52:23,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2755 states. [2021-10-28 09:52:23,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2755 to 2100. [2021-10-28 09:52:23,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2100 states, 2099 states have (on average 1.1205335874225821) internal successors, (2352), 2099 states have internal predecessors, (2352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:52:23,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2100 states to 2100 states and 2352 transitions. [2021-10-28 09:52:23,186 INFO L78 Accepts]: Start accepts. Automaton has 2100 states and 2352 transitions. Word has length 173 [2021-10-28 09:52:23,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:52:23,190 INFO L470 AbstractCegarLoop]: Abstraction has 2100 states and 2352 transitions. [2021-10-28 09:52:23,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:52:23,192 INFO L276 IsEmpty]: Start isEmpty. Operand 2100 states and 2352 transitions. [2021-10-28 09:52:23,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2021-10-28 09:52:23,199 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:52:23,199 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:52:23,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bc6303-34f7-4fdc-94e4-8a93d6b484e4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-28 09:52:23,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bc6303-34f7-4fdc-94e4-8a93d6b484e4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-10-28 09:52:23,414 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:52:23,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:52:23,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1219695243, now seen corresponding path program 1 times [2021-10-28 09:52:23,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:52:23,415 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884741458] [2021-10-28 09:52:23,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:52:23,415 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:52:23,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:23,524 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-10-28 09:52:23,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:52:23,525 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884741458] [2021-10-28 09:52:23,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884741458] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:52:23,525 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:52:23,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:52:23,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938093955] [2021-10-28 09:52:23,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:52:23,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:52:23,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:52:23,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:52:23,528 INFO L87 Difference]: Start difference. First operand 2100 states and 2352 transitions. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:52:24,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:52:24,210 INFO L93 Difference]: Finished difference Result 4591 states and 5163 transitions. [2021-10-28 09:52:24,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:52:24,210 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 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 220 [2021-10-28 09:52:24,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:52:24,224 INFO L225 Difference]: With dead ends: 4591 [2021-10-28 09:52:24,224 INFO L226 Difference]: Without dead ends: 2624 [2021-10-28 09:52:24,227 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:52:24,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2624 states. [2021-10-28 09:52:24,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2624 to 2362. [2021-10-28 09:52:24,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2362 states, 2361 states have (on average 1.1147818720880982) internal successors, (2632), 2361 states have internal predecessors, (2632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:52:24,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2362 states to 2362 states and 2632 transitions. [2021-10-28 09:52:24,313 INFO L78 Accepts]: Start accepts. Automaton has 2362 states and 2632 transitions. Word has length 220 [2021-10-28 09:52:24,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:52:24,314 INFO L470 AbstractCegarLoop]: Abstraction has 2362 states and 2632 transitions. [2021-10-28 09:52:24,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:52:24,314 INFO L276 IsEmpty]: Start isEmpty. Operand 2362 states and 2632 transitions. [2021-10-28 09:52:24,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-10-28 09:52:24,321 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:52:24,322 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:52:24,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-28 09:52:24,323 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:52:24,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:52:24,323 INFO L85 PathProgramCache]: Analyzing trace with hash -908696778, now seen corresponding path program 1 times [2021-10-28 09:52:24,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:52:24,326 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11673131] [2021-10-28 09:52:24,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:52:24,326 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:52:24,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:24,422 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 120 proven. 6 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2021-10-28 09:52:24,423 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:52:24,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11673131] [2021-10-28 09:52:24,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11673131] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:52:24,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874601038] [2021-10-28 09:52:24,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:52:24,424 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:52:24,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bc6303-34f7-4fdc-94e4-8a93d6b484e4/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:52:24,426 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bc6303-34f7-4fdc-94e4-8a93d6b484e4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:52:24,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bc6303-34f7-4fdc-94e4-8a93d6b484e4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-28 09:52:24,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:52:24,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 09:52:24,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:52:25,221 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2021-10-28 09:52:25,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [874601038] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:52:25,222 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:52:25,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2021-10-28 09:52:25,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868156412] [2021-10-28 09:52:25,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:52:25,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:52:25,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:52:25,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:52:25,226 INFO L87 Difference]: Start difference. First operand 2362 states and 2632 transitions. Second operand has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:52:25,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:52:25,647 INFO L93 Difference]: Finished difference Result 4851 states and 5426 transitions. [2021-10-28 09:52:25,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:52:25,648 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 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 233 [2021-10-28 09:52:25,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:52:25,648 INFO L225 Difference]: With dead ends: 4851 [2021-10-28 09:52:25,648 INFO L226 Difference]: Without dead ends: 0 [2021-10-28 09:52:25,655 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:52:25,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-28 09:52:25,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-28 09:52:25,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:52:25,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-28 09:52:25,657 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 233 [2021-10-28 09:52:25,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:52:25,658 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 09:52:25,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.666666666666664) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:52:25,658 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-28 09:52:25,658 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-28 09:52:25,663 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:52:25,702 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bc6303-34f7-4fdc-94e4-8a93d6b484e4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-28 09:52:25,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bc6303-34f7-4fdc-94e4-8a93d6b484e4/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:52:25,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-28 09:52:25,883 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:52:25,914 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:52:25,915 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:52:26,193 INFO L857 garLoopResultBuilder]: For program point L564(line 564) no Hoare annotation was computed. [2021-10-28 09:52:26,193 INFO L857 garLoopResultBuilder]: For program point L531(line 531) no Hoare annotation was computed. [2021-10-28 09:52:26,193 INFO L857 garLoopResultBuilder]: For program point L498(line 498) no Hoare annotation was computed. [2021-10-28 09:52:26,193 INFO L857 garLoopResultBuilder]: For program point L465(line 465) no Hoare annotation was computed. [2021-10-28 09:52:26,193 INFO L857 garLoopResultBuilder]: For program point L432(line 432) no Hoare annotation was computed. [2021-10-28 09:52:26,193 INFO L857 garLoopResultBuilder]: For program point L102(lines 102 400) no Hoare annotation was computed. [2021-10-28 09:52:26,194 INFO L857 garLoopResultBuilder]: For program point L598(line 598) no Hoare annotation was computed. [2021-10-28 09:52:26,194 INFO L857 garLoopResultBuilder]: For program point L334(lines 334 400) no Hoare annotation was computed. [2021-10-28 09:52:26,194 INFO L857 garLoopResultBuilder]: For program point L566-1(lines 40 585) no Hoare annotation was computed. [2021-10-28 09:52:26,194 INFO L857 garLoopResultBuilder]: For program point L533-1(lines 40 585) no Hoare annotation was computed. [2021-10-28 09:52:26,194 INFO L857 garLoopResultBuilder]: For program point L500-1(lines 40 585) no Hoare annotation was computed. [2021-10-28 09:52:26,194 INFO L857 garLoopResultBuilder]: For program point L467-1(lines 40 585) no Hoare annotation was computed. [2021-10-28 09:52:26,194 INFO L857 garLoopResultBuilder]: For program point L401(lines 401 403) no Hoare annotation was computed. [2021-10-28 09:52:26,194 INFO L857 garLoopResultBuilder]: For program point L434-1(lines 40 585) no Hoare annotation was computed. [2021-10-28 09:52:26,194 INFO L857 garLoopResultBuilder]: For program point L401-2(lines 40 585) no Hoare annotation was computed. [2021-10-28 09:52:26,194 INFO L857 garLoopResultBuilder]: For program point L302(lines 302 400) no Hoare annotation was computed. [2021-10-28 09:52:26,195 INFO L857 garLoopResultBuilder]: For program point L170(lines 170 400) no Hoare annotation was computed. [2021-10-28 09:52:26,195 INFO L857 garLoopResultBuilder]: For program point L567(line 567) no Hoare annotation was computed. [2021-10-28 09:52:26,195 INFO L857 garLoopResultBuilder]: For program point L534(line 534) no Hoare annotation was computed. [2021-10-28 09:52:26,195 INFO L857 garLoopResultBuilder]: For program point L501(line 501) no Hoare annotation was computed. [2021-10-28 09:52:26,195 INFO L857 garLoopResultBuilder]: For program point L468(line 468) no Hoare annotation was computed. [2021-10-28 09:52:26,195 INFO L857 garLoopResultBuilder]: For program point L435(line 435) no Hoare annotation was computed. [2021-10-28 09:52:26,195 INFO L857 garLoopResultBuilder]: For program point L402(line 402) no Hoare annotation was computed. [2021-10-28 09:52:26,195 INFO L857 garLoopResultBuilder]: For program point L204(lines 204 400) no Hoare annotation was computed. [2021-10-28 09:52:26,195 INFO L857 garLoopResultBuilder]: For program point L72(lines 72 400) no Hoare annotation was computed. [2021-10-28 09:52:26,195 INFO L857 garLoopResultBuilder]: For program point L271(lines 271 400) no Hoare annotation was computed. [2021-10-28 09:52:26,195 INFO L857 garLoopResultBuilder]: For program point L139(lines 139 400) no Hoare annotation was computed. [2021-10-28 09:52:26,196 INFO L857 garLoopResultBuilder]: For program point L569-1(lines 40 585) no Hoare annotation was computed. [2021-10-28 09:52:26,196 INFO L857 garLoopResultBuilder]: For program point L536-1(lines 40 585) no Hoare annotation was computed. [2021-10-28 09:52:26,196 INFO L857 garLoopResultBuilder]: For program point L503-1(lines 40 585) no Hoare annotation was computed. [2021-10-28 09:52:26,196 INFO L857 garLoopResultBuilder]: For program point L470-1(lines 40 585) no Hoare annotation was computed. [2021-10-28 09:52:26,196 INFO L857 garLoopResultBuilder]: For program point L437-1(lines 40 585) no Hoare annotation was computed. [2021-10-28 09:52:26,196 INFO L857 garLoopResultBuilder]: For program point L371(lines 371 400) no Hoare annotation was computed. [2021-10-28 09:52:26,196 INFO L857 garLoopResultBuilder]: For program point L404-1(lines 40 585) no Hoare annotation was computed. [2021-10-28 09:52:26,196 INFO L857 garLoopResultBuilder]: For program point L107(lines 107 400) no Hoare annotation was computed. [2021-10-28 09:52:26,196 INFO L857 garLoopResultBuilder]: For program point L41(lines 41 400) no Hoare annotation was computed. [2021-10-28 09:52:26,196 INFO L857 garLoopResultBuilder]: For program point L570(line 570) no Hoare annotation was computed. [2021-10-28 09:52:26,197 INFO L857 garLoopResultBuilder]: For program point L537(line 537) no Hoare annotation was computed. [2021-10-28 09:52:26,197 INFO L857 garLoopResultBuilder]: For program point L504(line 504) no Hoare annotation was computed. [2021-10-28 09:52:26,197 INFO L857 garLoopResultBuilder]: For program point L471(line 471) no Hoare annotation was computed. [2021-10-28 09:52:26,197 INFO L857 garLoopResultBuilder]: For program point L438(line 438) no Hoare annotation was computed. [2021-10-28 09:52:26,197 INFO L857 garLoopResultBuilder]: For program point L405(line 405) no Hoare annotation was computed. [2021-10-28 09:52:26,197 INFO L857 garLoopResultBuilder]: For program point L339(lines 339 400) no Hoare annotation was computed. [2021-10-28 09:52:26,197 INFO L857 garLoopResultBuilder]: For program point L207(lines 207 400) no Hoare annotation was computed. [2021-10-28 09:52:26,197 INFO L857 garLoopResultBuilder]: For program point L75(lines 75 400) no Hoare annotation was computed. [2021-10-28 09:52:26,197 INFO L857 garLoopResultBuilder]: For program point L373(lines 373 400) no Hoare annotation was computed. [2021-10-28 09:52:26,197 INFO L857 garLoopResultBuilder]: For program point L241(lines 241 400) no Hoare annotation was computed. [2021-10-28 09:52:26,197 INFO L857 garLoopResultBuilder]: For program point L175(lines 175 400) no Hoare annotation was computed. [2021-10-28 09:52:26,198 INFO L857 garLoopResultBuilder]: For program point L572-1(lines 40 585) no Hoare annotation was computed. [2021-10-28 09:52:26,198 INFO L857 garLoopResultBuilder]: For program point L539-1(lines 40 585) no Hoare annotation was computed. [2021-10-28 09:52:26,198 INFO L857 garLoopResultBuilder]: For program point L506-1(lines 40 585) no Hoare annotation was computed. [2021-10-28 09:52:26,198 INFO L857 garLoopResultBuilder]: For program point L473-1(lines 40 585) no Hoare annotation was computed. [2021-10-28 09:52:26,198 INFO L857 garLoopResultBuilder]: For program point L440-1(lines 40 585) no Hoare annotation was computed. [2021-10-28 09:52:26,198 INFO L857 garLoopResultBuilder]: For program point L407-1(lines 40 585) no Hoare annotation was computed. [2021-10-28 09:52:26,198 INFO L857 garLoopResultBuilder]: For program point L275(lines 275 400) no Hoare annotation was computed. [2021-10-28 09:52:26,198 INFO L857 garLoopResultBuilder]: For program point L573(line 573) no Hoare annotation was computed. [2021-10-28 09:52:26,198 INFO L857 garLoopResultBuilder]: For program point L540(line 540) no Hoare annotation was computed. [2021-10-28 09:52:26,198 INFO L857 garLoopResultBuilder]: For program point L507(line 507) no Hoare annotation was computed. [2021-10-28 09:52:26,199 INFO L857 garLoopResultBuilder]: For program point L474(line 474) no Hoare annotation was computed. [2021-10-28 09:52:26,199 INFO L857 garLoopResultBuilder]: For program point L441(line 441) no Hoare annotation was computed. [2021-10-28 09:52:26,199 INFO L857 garLoopResultBuilder]: For program point L408(line 408) no Hoare annotation was computed. [2021-10-28 09:52:26,199 INFO L857 garLoopResultBuilder]: For program point L375(lines 375 400) no Hoare annotation was computed. [2021-10-28 09:52:26,199 INFO L857 garLoopResultBuilder]: For program point L309(lines 309 400) no Hoare annotation was computed. [2021-10-28 09:52:26,199 INFO L857 garLoopResultBuilder]: For program point L45(lines 45 400) no Hoare annotation was computed. [2021-10-28 09:52:26,199 INFO L857 garLoopResultBuilder]: For program point L343(lines 343 400) no Hoare annotation was computed. [2021-10-28 09:52:26,199 INFO L857 garLoopResultBuilder]: For program point L112(lines 112 400) no Hoare annotation was computed. [2021-10-28 09:52:26,199 INFO L857 garLoopResultBuilder]: For program point L575-1(lines 40 585) no Hoare annotation was computed. [2021-10-28 09:52:26,199 INFO L857 garLoopResultBuilder]: For program point L542-1(lines 40 585) no Hoare annotation was computed. [2021-10-28 09:52:26,199 INFO L857 garLoopResultBuilder]: For program point L509-1(lines 40 585) no Hoare annotation was computed. [2021-10-28 09:52:26,200 INFO L857 garLoopResultBuilder]: For program point L476-1(lines 40 585) no Hoare annotation was computed. [2021-10-28 09:52:26,200 INFO L857 garLoopResultBuilder]: For program point L443-1(lines 40 585) no Hoare annotation was computed. [2021-10-28 09:52:26,200 INFO L857 garLoopResultBuilder]: For program point L410-1(lines 40 585) no Hoare annotation was computed. [2021-10-28 09:52:26,200 INFO L857 garLoopResultBuilder]: For program point L278(lines 278 400) no Hoare annotation was computed. [2021-10-28 09:52:26,200 INFO L857 garLoopResultBuilder]: For program point L146(lines 146 400) no Hoare annotation was computed. [2021-10-28 09:52:26,200 INFO L857 garLoopResultBuilder]: For program point L576(line 576) no Hoare annotation was computed. [2021-10-28 09:52:26,200 INFO L857 garLoopResultBuilder]: For program point L543(line 543) no Hoare annotation was computed. [2021-10-28 09:52:26,200 INFO L857 garLoopResultBuilder]: For program point L510(line 510) no Hoare annotation was computed. [2021-10-28 09:52:26,200 INFO L857 garLoopResultBuilder]: For program point L477(line 477) no Hoare annotation was computed. [2021-10-28 09:52:26,200 INFO L857 garLoopResultBuilder]: For program point L444(line 444) no Hoare annotation was computed. [2021-10-28 09:52:26,200 INFO L857 garLoopResultBuilder]: For program point L411(line 411) no Hoare annotation was computed. [2021-10-28 09:52:26,200 INFO L857 garLoopResultBuilder]: For program point L213(lines 213 400) no Hoare annotation was computed. [2021-10-28 09:52:26,201 INFO L857 garLoopResultBuilder]: For program point L82(lines 82 400) no Hoare annotation was computed. [2021-10-28 09:52:26,201 INFO L857 garLoopResultBuilder]: For program point L578-1(lines 40 585) no Hoare annotation was computed. [2021-10-28 09:52:26,201 INFO L857 garLoopResultBuilder]: For program point L545-1(lines 40 585) no Hoare annotation was computed. [2021-10-28 09:52:26,201 INFO L857 garLoopResultBuilder]: For program point L512-1(lines 40 585) no Hoare annotation was computed. [2021-10-28 09:52:26,201 INFO L857 garLoopResultBuilder]: For program point L479-1(lines 40 585) no Hoare annotation was computed. [2021-10-28 09:52:26,201 INFO L857 garLoopResultBuilder]: For program point L446-1(lines 40 585) no Hoare annotation was computed. [2021-10-28 09:52:26,201 INFO L857 garLoopResultBuilder]: For program point L413-1(lines 40 585) no Hoare annotation was computed. [2021-10-28 09:52:26,201 INFO L857 garLoopResultBuilder]: For program point L347(lines 347 400) no Hoare annotation was computed. [2021-10-28 09:52:26,205 INFO L857 garLoopResultBuilder]: For program point L248(lines 248 400) no Hoare annotation was computed. [2021-10-28 09:52:26,205 INFO L857 garLoopResultBuilder]: For program point L579(line 579) no Hoare annotation was computed. [2021-10-28 09:52:26,206 INFO L857 garLoopResultBuilder]: For program point L546(line 546) no Hoare annotation was computed. [2021-10-28 09:52:26,206 INFO L857 garLoopResultBuilder]: For program point L513(line 513) no Hoare annotation was computed. [2021-10-28 09:52:26,206 INFO L857 garLoopResultBuilder]: For program point L480(line 480) no Hoare annotation was computed. [2021-10-28 09:52:26,206 INFO L857 garLoopResultBuilder]: For program point L447(line 447) no Hoare annotation was computed. [2021-10-28 09:52:26,206 INFO L857 garLoopResultBuilder]: For program point L414(line 414) no Hoare annotation was computed. [2021-10-28 09:52:26,206 INFO L857 garLoopResultBuilder]: For program point L183(lines 183 400) no Hoare annotation was computed. [2021-10-28 09:52:26,207 INFO L857 garLoopResultBuilder]: For program point L150(lines 150 400) no Hoare annotation was computed. [2021-10-28 09:52:26,207 INFO L857 garLoopResultBuilder]: For program point L382(lines 382 400) no Hoare annotation was computed. [2021-10-28 09:52:26,207 INFO L857 garLoopResultBuilder]: For program point L316(lines 316 400) no Hoare annotation was computed. [2021-10-28 09:52:26,207 INFO L857 garLoopResultBuilder]: For program point L283(lines 283 400) no Hoare annotation was computed. [2021-10-28 09:52:26,207 INFO L857 garLoopResultBuilder]: For program point L118(lines 118 400) no Hoare annotation was computed. [2021-10-28 09:52:26,207 INFO L857 garLoopResultBuilder]: For program point L581-1(lines 581 583) no Hoare annotation was computed. [2021-10-28 09:52:26,208 INFO L857 garLoopResultBuilder]: For program point L548-1(lines 40 585) no Hoare annotation was computed. [2021-10-28 09:52:26,208 INFO L857 garLoopResultBuilder]: For program point L515-1(lines 40 585) no Hoare annotation was computed. [2021-10-28 09:52:26,208 INFO L857 garLoopResultBuilder]: For program point L482-1(lines 40 585) no Hoare annotation was computed. [2021-10-28 09:52:26,208 INFO L857 garLoopResultBuilder]: For program point L449-1(lines 40 585) no Hoare annotation was computed. [2021-10-28 09:52:26,208 INFO L857 garLoopResultBuilder]: For program point L416-1(lines 40 585) no Hoare annotation was computed. [2021-10-28 09:52:26,208 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-28 09:52:26,208 INFO L857 garLoopResultBuilder]: For program point L218(lines 218 400) no Hoare annotation was computed. [2021-10-28 09:52:26,209 INFO L857 garLoopResultBuilder]: For program point L53(lines 53 400) no Hoare annotation was computed. [2021-10-28 09:52:26,209 INFO L857 garLoopResultBuilder]: For program point L582(line 582) no Hoare annotation was computed. [2021-10-28 09:52:26,209 INFO L857 garLoopResultBuilder]: For program point L549(line 549) no Hoare annotation was computed. [2021-10-28 09:52:26,209 INFO L857 garLoopResultBuilder]: For program point L516(line 516) no Hoare annotation was computed. [2021-10-28 09:52:26,209 INFO L857 garLoopResultBuilder]: For program point L483(line 483) no Hoare annotation was computed. [2021-10-28 09:52:26,209 INFO L857 garLoopResultBuilder]: For program point L450(line 450) no Hoare annotation was computed. [2021-10-28 09:52:26,210 INFO L857 garLoopResultBuilder]: For program point L417(line 417) no Hoare annotation was computed. [2021-10-28 09:52:26,210 INFO L857 garLoopResultBuilder]: For program point L154(lines 154 400) no Hoare annotation was computed. [2021-10-28 09:52:26,210 INFO L853 garLoopResultBuilder]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse2 (<= ~a20~0 0)) (.cse7 (= ~a12~0 8)) (.cse8 (= ~a21~0 1)) (.cse9 (= ~a17~0 1)) (.cse4 (<= ~a16~0 5)) (.cse5 (= ~a7~0 1)) (.cse1 (= ~a20~0 1)) (.cse3 (<= 15 ~a8~0)) (.cse6 (<= ~a8~0 13)) (.cse0 (<= ~a16~0 4))) (or (and .cse0 .cse1) (and .cse2 .cse3) (and .cse2 .cse4) (and .cse5 .cse4) (and .cse6 .cse7 .cse8 .cse9 .cse1) (and .cse7 .cse8 .cse9 .cse4 .cse1) (and .cse6 .cse5) (and .cse1 .cse3) (and .cse6 .cse0))) [2021-10-28 09:52:26,210 INFO L857 garLoopResultBuilder]: For program point L551-1(lines 40 585) no Hoare annotation was computed. [2021-10-28 09:52:26,211 INFO L857 garLoopResultBuilder]: For program point L518-1(lines 40 585) no Hoare annotation was computed. [2021-10-28 09:52:26,211 INFO L857 garLoopResultBuilder]: For program point L485-1(lines 40 585) no Hoare annotation was computed. [2021-10-28 09:52:26,211 INFO L857 garLoopResultBuilder]: For program point L452-1(lines 40 585) no Hoare annotation was computed. [2021-10-28 09:52:26,211 INFO L857 garLoopResultBuilder]: For program point L419-1(lines 40 585) no Hoare annotation was computed. [2021-10-28 09:52:26,211 INFO L857 garLoopResultBuilder]: For program point L188(lines 188 400) no Hoare annotation was computed. [2021-10-28 09:52:26,211 INFO L857 garLoopResultBuilder]: For program point L552(line 552) no Hoare annotation was computed. [2021-10-28 09:52:26,212 INFO L857 garLoopResultBuilder]: For program point L519(line 519) no Hoare annotation was computed. [2021-10-28 09:52:26,212 INFO L857 garLoopResultBuilder]: For program point L486(line 486) no Hoare annotation was computed. [2021-10-28 09:52:26,212 INFO L857 garLoopResultBuilder]: For program point L453(line 453) no Hoare annotation was computed. [2021-10-28 09:52:26,212 INFO L857 garLoopResultBuilder]: For program point L420(line 420) no Hoare annotation was computed. [2021-10-28 09:52:26,212 INFO L857 garLoopResultBuilder]: For program point L387(lines 387 400) no Hoare annotation was computed. [2021-10-28 09:52:26,212 INFO L857 garLoopResultBuilder]: For program point L288(lines 288 400) no Hoare annotation was computed. [2021-10-28 09:52:26,212 INFO L857 garLoopResultBuilder]: For program point L255(lines 255 400) no Hoare annotation was computed. [2021-10-28 09:52:26,213 INFO L857 garLoopResultBuilder]: For program point L90(lines 90 400) no Hoare annotation was computed. [2021-10-28 09:52:26,213 INFO L857 garLoopResultBuilder]: For program point L355(lines 355 400) no Hoare annotation was computed. [2021-10-28 09:52:26,213 INFO L857 garLoopResultBuilder]: For program point L322(lines 322 400) no Hoare annotation was computed. [2021-10-28 09:52:26,213 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-28 09:52:26,213 INFO L857 garLoopResultBuilder]: For program point L124(lines 124 400) no Hoare annotation was computed. [2021-10-28 09:52:26,213 INFO L860 garLoopResultBuilder]: At program point L587(lines 587 604) the Hoare annotation is: true [2021-10-28 09:52:26,214 INFO L857 garLoopResultBuilder]: For program point L554-1(lines 40 585) no Hoare annotation was computed. [2021-10-28 09:52:26,214 INFO L857 garLoopResultBuilder]: For program point L521-1(lines 40 585) no Hoare annotation was computed. [2021-10-28 09:52:26,214 INFO L857 garLoopResultBuilder]: For program point L488-1(lines 40 585) no Hoare annotation was computed. [2021-10-28 09:52:26,214 INFO L857 garLoopResultBuilder]: For program point L455-1(lines 40 585) no Hoare annotation was computed. [2021-10-28 09:52:26,214 INFO L857 garLoopResultBuilder]: For program point L422-1(lines 40 585) no Hoare annotation was computed. [2021-10-28 09:52:26,214 INFO L857 garLoopResultBuilder]: For program point L224(lines 224 400) no Hoare annotation was computed. [2021-10-28 09:52:26,215 INFO L857 garLoopResultBuilder]: For program point L158(lines 158 400) no Hoare annotation was computed. [2021-10-28 09:52:26,215 INFO L857 garLoopResultBuilder]: For program point L59(lines 59 400) no Hoare annotation was computed. [2021-10-28 09:52:26,215 INFO L857 garLoopResultBuilder]: For program point L555(line 555) no Hoare annotation was computed. [2021-10-28 09:52:26,215 INFO L857 garLoopResultBuilder]: For program point L522(line 522) no Hoare annotation was computed. [2021-10-28 09:52:26,215 INFO L857 garLoopResultBuilder]: For program point L489(line 489) no Hoare annotation was computed. [2021-10-28 09:52:26,215 INFO L857 garLoopResultBuilder]: For program point L456(line 456) no Hoare annotation was computed. [2021-10-28 09:52:26,216 INFO L857 garLoopResultBuilder]: For program point L423(line 423) no Hoare annotation was computed. [2021-10-28 09:52:26,216 INFO L857 garLoopResultBuilder]: For program point L94(lines 94 400) no Hoare annotation was computed. [2021-10-28 09:52:26,216 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-28 09:52:26,216 INFO L857 garLoopResultBuilder]: For program point L557-1(lines 40 585) no Hoare annotation was computed. [2021-10-28 09:52:26,216 INFO L857 garLoopResultBuilder]: For program point L524-1(lines 40 585) no Hoare annotation was computed. [2021-10-28 09:52:26,217 INFO L857 garLoopResultBuilder]: For program point L491-1(lines 40 585) no Hoare annotation was computed. [2021-10-28 09:52:26,217 INFO L857 garLoopResultBuilder]: For program point L458-1(lines 40 585) no Hoare annotation was computed. [2021-10-28 09:52:26,217 INFO L857 garLoopResultBuilder]: For program point L392(lines 392 400) no Hoare annotation was computed. [2021-10-28 09:52:26,217 INFO L857 garLoopResultBuilder]: For program point L425-1(lines 40 585) no Hoare annotation was computed. [2021-10-28 09:52:26,218 INFO L857 garLoopResultBuilder]: For program point L326(lines 326 400) no Hoare annotation was computed. [2021-10-28 09:52:26,218 INFO L857 garLoopResultBuilder]: For program point L260(lines 260 400) no Hoare annotation was computed. [2021-10-28 09:52:26,218 INFO L857 garLoopResultBuilder]: For program point L558(line 558) no Hoare annotation was computed. [2021-10-28 09:52:26,218 INFO L857 garLoopResultBuilder]: For program point L525(line 525) no Hoare annotation was computed. [2021-10-28 09:52:26,218 INFO L857 garLoopResultBuilder]: For program point L492(line 492) no Hoare annotation was computed. [2021-10-28 09:52:26,218 INFO L857 garLoopResultBuilder]: For program point L459(line 459) no Hoare annotation was computed. [2021-10-28 09:52:26,219 INFO L857 garLoopResultBuilder]: For program point L426(line 426) no Hoare annotation was computed. [2021-10-28 09:52:26,219 INFO L857 garLoopResultBuilder]: For program point L228(lines 228 400) no Hoare annotation was computed. [2021-10-28 09:52:26,219 INFO L857 garLoopResultBuilder]: For program point L162(lines 162 400) no Hoare annotation was computed. [2021-10-28 09:52:26,219 INFO L857 garLoopResultBuilder]: For program point L129(lines 129 400) no Hoare annotation was computed. [2021-10-28 09:52:26,220 INFO L857 garLoopResultBuilder]: For program point L328(lines 328 400) no Hoare annotation was computed. [2021-10-28 09:52:26,220 INFO L857 garLoopResultBuilder]: For program point L196(lines 196 400) no Hoare annotation was computed. [2021-10-28 09:52:26,220 INFO L857 garLoopResultBuilder]: For program point L64(lines 64 400) no Hoare annotation was computed. [2021-10-28 09:52:26,220 INFO L857 garLoopResultBuilder]: For program point L560-1(lines 40 585) no Hoare annotation was computed. [2021-10-28 09:52:26,221 INFO L853 garLoopResultBuilder]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse2 (<= ~a20~0 0)) (.cse7 (= ~a12~0 8)) (.cse8 (= ~a21~0 1)) (.cse9 (= ~a17~0 1)) (.cse4 (<= ~a16~0 5)) (.cse5 (= ~a7~0 1)) (.cse1 (= ~a20~0 1)) (.cse3 (<= 15 ~a8~0)) (.cse6 (<= ~a8~0 13)) (.cse0 (<= ~a16~0 4))) (or (and .cse0 .cse1) (and .cse2 .cse3) (and .cse2 .cse4) (and .cse5 .cse4) (and .cse6 .cse7 .cse8 .cse9 .cse1) (and .cse7 .cse8 .cse9 .cse4 .cse1) (and .cse6 .cse5) (and .cse1 .cse3) (and .cse6 .cse0))) [2021-10-28 09:52:26,223 INFO L857 garLoopResultBuilder]: For program point L527-1(lines 40 585) no Hoare annotation was computed. [2021-10-28 09:52:26,223 INFO L857 garLoopResultBuilder]: For program point L494-1(lines 40 585) no Hoare annotation was computed. [2021-10-28 09:52:26,223 INFO L857 garLoopResultBuilder]: For program point L461-1(lines 40 585) no Hoare annotation was computed. [2021-10-28 09:52:26,223 INFO L857 garLoopResultBuilder]: For program point L428-1(lines 40 585) no Hoare annotation was computed. [2021-10-28 09:52:26,223 INFO L857 garLoopResultBuilder]: For program point L296(lines 296 400) no Hoare annotation was computed. [2021-10-28 09:52:26,224 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-28 09:52:26,224 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 504) no Hoare annotation was computed. [2021-10-28 09:52:26,224 INFO L857 garLoopResultBuilder]: For program point L561(line 561) no Hoare annotation was computed. [2021-10-28 09:52:26,224 INFO L857 garLoopResultBuilder]: For program point L528(line 528) no Hoare annotation was computed. [2021-10-28 09:52:26,224 INFO L857 garLoopResultBuilder]: For program point L495(line 495) no Hoare annotation was computed. [2021-10-28 09:52:26,224 INFO L857 garLoopResultBuilder]: For program point L462(line 462) no Hoare annotation was computed. [2021-10-28 09:52:26,224 INFO L857 garLoopResultBuilder]: For program point L429(line 429) no Hoare annotation was computed. [2021-10-28 09:52:26,225 INFO L857 garLoopResultBuilder]: For program point L363(lines 363 400) no Hoare annotation was computed. [2021-10-28 09:52:26,225 INFO L857 garLoopResultBuilder]: For program point L199(lines 199 400) no Hoare annotation was computed. [2021-10-28 09:52:26,225 INFO L857 garLoopResultBuilder]: For program point L563-1(lines 40 585) no Hoare annotation was computed. [2021-10-28 09:52:26,225 INFO L857 garLoopResultBuilder]: For program point L530-1(lines 40 585) no Hoare annotation was computed. [2021-10-28 09:52:26,225 INFO L857 garLoopResultBuilder]: For program point L497-1(lines 40 585) no Hoare annotation was computed. [2021-10-28 09:52:26,225 INFO L857 garLoopResultBuilder]: For program point L464-1(lines 40 585) no Hoare annotation was computed. [2021-10-28 09:52:26,225 INFO L857 garLoopResultBuilder]: For program point L431-1(lines 40 585) no Hoare annotation was computed. [2021-10-28 09:52:26,226 INFO L857 garLoopResultBuilder]: For program point L365(lines 365 400) no Hoare annotation was computed. [2021-10-28 09:52:26,226 INFO L857 garLoopResultBuilder]: For program point L266(lines 266 400) no Hoare annotation was computed. [2021-10-28 09:52:26,226 INFO L857 garLoopResultBuilder]: For program point L233(lines 233 400) no Hoare annotation was computed. [2021-10-28 09:52:26,226 INFO L857 garLoopResultBuilder]: For program point L134(lines 134 400) no Hoare annotation was computed. [2021-10-28 09:52:26,229 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:52:26,231 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:52:26,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:52:26 BoogieIcfgContainer [2021-10-28 09:52:26,268 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:52:26,269 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:52:26,269 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:52:26,269 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:52:26,270 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:52:13" (3/4) ... [2021-10-28 09:52:26,273 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 09:52:26,312 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-28 09:52:26,318 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-28 09:52:26,319 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 09:52:26,321 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 09:52:26,476 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bc6303-34f7-4fdc-94e4-8a93d6b484e4/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 09:52:26,476 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:52:26,478 INFO L168 Benchmark]: Toolchain (without parser) took 15134.43 ms. Allocated memory was 92.3 MB in the beginning and 209.7 MB in the end (delta: 117.4 MB). Free memory was 56.8 MB in the beginning and 116.7 MB in the end (delta: -59.9 MB). Peak memory consumption was 56.0 MB. Max. memory is 16.1 GB. [2021-10-28 09:52:26,479 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 92.3 MB. Free memory was 62.8 MB in the beginning and 62.8 MB in the end (delta: 21.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:52:26,480 INFO L168 Benchmark]: CACSL2BoogieTranslator took 603.13 ms. Allocated memory is still 92.3 MB. Free memory was 56.6 MB in the beginning and 52.5 MB in the end (delta: 4.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:52:26,480 INFO L168 Benchmark]: Boogie Procedure Inliner took 104.84 ms. Allocated memory is still 92.3 MB. Free memory was 52.5 MB in the beginning and 47.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:52:26,480 INFO L168 Benchmark]: Boogie Preprocessor took 103.83 ms. Allocated memory is still 92.3 MB. Free memory was 46.6 MB in the beginning and 42.4 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:52:26,481 INFO L168 Benchmark]: RCFGBuilder took 1376.59 ms. Allocated memory was 92.3 MB in the beginning and 113.2 MB in the end (delta: 21.0 MB). Free memory was 42.4 MB in the beginning and 84.2 MB in the end (delta: -41.8 MB). Peak memory consumption was 29.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:52:26,481 INFO L168 Benchmark]: TraceAbstraction took 12732.05 ms. Allocated memory was 113.2 MB in the beginning and 209.7 MB in the end (delta: 96.5 MB). Free memory was 84.2 MB in the beginning and 132.4 MB in the end (delta: -48.2 MB). Peak memory consumption was 48.0 MB. Max. memory is 16.1 GB. [2021-10-28 09:52:26,482 INFO L168 Benchmark]: Witness Printer took 207.17 ms. Allocated memory is still 209.7 MB. Free memory was 132.4 MB in the beginning and 116.7 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-28 09:52:26,484 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 92.3 MB. Free memory was 62.8 MB in the beginning and 62.8 MB in the end (delta: 21.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 603.13 ms. Allocated memory is still 92.3 MB. Free memory was 56.6 MB in the beginning and 52.5 MB in the end (delta: 4.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 104.84 ms. Allocated memory is still 92.3 MB. Free memory was 52.5 MB in the beginning and 47.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 103.83 ms. Allocated memory is still 92.3 MB. Free memory was 46.6 MB in the beginning and 42.4 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1376.59 ms. Allocated memory was 92.3 MB in the beginning and 113.2 MB in the end (delta: 21.0 MB). Free memory was 42.4 MB in the beginning and 84.2 MB in the end (delta: -41.8 MB). Peak memory consumption was 29.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 12732.05 ms. Allocated memory was 113.2 MB in the beginning and 209.7 MB in the end (delta: 96.5 MB). Free memory was 84.2 MB in the beginning and 132.4 MB in the end (delta: -48.2 MB). Peak memory consumption was 48.0 MB. Max. memory is 16.1 GB. * Witness Printer took 207.17 ms. Allocated memory is still 209.7 MB. Free memory was 132.4 MB in the beginning and 116.7 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 504]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 198 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 12.6s, OverallIterations: 11, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 6.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 985 SDtfs, 1312 SDslu, 76 SDs, 0 SdLazy, 4273 SolverSat, 544 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 676 GetRequests, 654 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2362occurred in iteration=10, InterpolantAutomatonStates: 36, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 11 MinimizatonAttempts, 1572 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 51 NumberOfFragments, 165 HoareAnnotationTreeSize, 3 FomulaSimplifications, 1700 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 176 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 2295 NumberOfCodeBlocks, 2295 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 2280 ConstructedInterpolants, 0 QuantifiedInterpolants, 6926 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1289 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 15 InterpolantComputations, 11 PerfectInterpolantSequences, 970/1011 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: ((((((((a16 <= 4 && a20 == 1) || (a20 <= 0 && 15 <= a8)) || (a20 <= 0 && a16 <= 5)) || (a7 == 1 && a16 <= 5)) || ((((a8 <= 13 && a12 == 8) && a21 == 1) && a17 == 1) && a20 == 1)) || ((((a12 == 8 && a21 == 1) && a17 == 1) && a16 <= 5) && a20 == 1)) || (a8 <= 13 && a7 == 1)) || (a20 == 1 && 15 <= a8)) || (a8 <= 13 && a16 <= 4) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: ((((((((a16 <= 4 && a20 == 1) || (a20 <= 0 && 15 <= a8)) || (a20 <= 0 && a16 <= 5)) || (a7 == 1 && a16 <= 5)) || ((((a8 <= 13 && a12 == 8) && a21 == 1) && a17 == 1) && a20 == 1)) || ((((a12 == 8 && a21 == 1) && a17 == 1) && a16 <= 5) && a20 == 1)) || (a8 <= 13 && a7 == 1)) || (a20 == 1 && 15 <= a8)) || (a8 <= 13 && a16 <= 4) RESULT: Ultimate proved your program to be correct! [2021-10-28 09:52:26,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bc6303-34f7-4fdc-94e4-8a93d6b484e4/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...