./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_2calls_6-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bf997bc-4b51-4768-8d1f-66c298535d98/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bf997bc-4b51-4768-8d1f-66c298535d98/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bf997bc-4b51-4768-8d1f-66c298535d98/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bf997bc-4b51-4768-8d1f-66c298535d98/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_2calls_6-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bf997bc-4b51-4768-8d1f-66c298535d98/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bf997bc-4b51-4768-8d1f-66c298535d98/bin/uautomizer-Dbtcem3rbc --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 31de98bafea1eb3233157f378400eba30060b6561e9e0a6257ecfebe8e53877a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 21:11:55,032 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:11:55,035 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:11:55,085 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:11:55,086 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:11:55,087 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:11:55,088 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:11:55,090 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:11:55,092 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:11:55,093 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:11:55,094 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:11:55,095 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:11:55,096 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:11:55,097 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:11:55,098 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:11:55,099 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:11:55,100 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:11:55,101 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:11:55,103 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:11:55,105 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:11:55,107 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:11:55,108 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:11:55,110 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:11:55,110 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:11:55,114 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:11:55,115 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:11:55,115 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:11:55,116 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:11:55,117 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:11:55,119 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:11:55,119 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:11:55,120 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:11:55,121 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:11:55,122 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:11:55,123 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:11:55,123 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:11:55,124 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:11:55,124 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:11:55,125 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:11:55,126 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:11:55,127 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:11:55,128 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bf997bc-4b51-4768-8d1f-66c298535d98/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 21:11:55,151 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:11:55,151 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:11:55,151 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:11:55,152 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:11:55,152 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:11:55,153 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:11:55,154 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:11:55,154 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:11:55,154 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:11:55,155 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:11:55,155 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 21:11:55,155 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:11:55,155 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 21:11:55,156 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:11:55,156 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:11:55,156 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:11:55,156 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:11:55,156 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 21:11:55,157 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:11:55,157 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:11:55,157 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:11:55,157 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:11:55,158 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:11:55,158 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:11:55,158 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:11:55,158 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:11:55,158 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:11:55,159 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:11:55,159 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:11:55,159 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 21:11:55,159 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:11:55,160 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:11:55,160 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:11:55,160 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_4bf997bc-4b51-4768-8d1f-66c298535d98/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bf997bc-4b51-4768-8d1f-66c298535d98/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 31de98bafea1eb3233157f378400eba30060b6561e9e0a6257ecfebe8e53877a [2022-11-02 21:11:55,407 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:11:55,464 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:11:55,467 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:11:55,469 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:11:55,474 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:11:55,475 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bf997bc-4b51-4768-8d1f-66c298535d98/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/recursive-simple/fibo_2calls_6-2.c [2022-11-02 21:11:55,582 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bf997bc-4b51-4768-8d1f-66c298535d98/bin/uautomizer-Dbtcem3rbc/data/de8049af2/917a1c31f2964a55ad432e16178782ae/FLAG70e827743 [2022-11-02 21:11:56,182 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:11:56,183 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bf997bc-4b51-4768-8d1f-66c298535d98/sv-benchmarks/c/recursive-simple/fibo_2calls_6-2.c [2022-11-02 21:11:56,191 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bf997bc-4b51-4768-8d1f-66c298535d98/bin/uautomizer-Dbtcem3rbc/data/de8049af2/917a1c31f2964a55ad432e16178782ae/FLAG70e827743 [2022-11-02 21:11:56,518 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bf997bc-4b51-4768-8d1f-66c298535d98/bin/uautomizer-Dbtcem3rbc/data/de8049af2/917a1c31f2964a55ad432e16178782ae [2022-11-02 21:11:56,523 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:11:56,527 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:11:56,531 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:11:56,531 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:11:56,535 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:11:56,537 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:11:56" (1/1) ... [2022-11-02 21:11:56,539 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31a665d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:56, skipping insertion in model container [2022-11-02 21:11:56,539 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:11:56" (1/1) ... [2022-11-02 21:11:56,547 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:11:56,562 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:11:56,798 WARN L230 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_4bf997bc-4b51-4768-8d1f-66c298535d98/sv-benchmarks/c/recursive-simple/fibo_2calls_6-2.c[946,959] [2022-11-02 21:11:56,802 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:11:56,816 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:11:56,845 WARN L230 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_4bf997bc-4b51-4768-8d1f-66c298535d98/sv-benchmarks/c/recursive-simple/fibo_2calls_6-2.c[946,959] [2022-11-02 21:11:56,846 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:11:56,860 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:11:56,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:56 WrapperNode [2022-11-02 21:11:56,861 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:11:56,862 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:11:56,862 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:11:56,862 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:11:56,871 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:56" (1/1) ... [2022-11-02 21:11:56,879 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:56" (1/1) ... [2022-11-02 21:11:56,897 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2022-11-02 21:11:56,898 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:11:56,899 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:11:56,899 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:11:56,899 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:11:56,907 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:56" (1/1) ... [2022-11-02 21:11:56,907 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:56" (1/1) ... [2022-11-02 21:11:56,908 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:56" (1/1) ... [2022-11-02 21:11:56,909 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:56" (1/1) ... [2022-11-02 21:11:56,912 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:56" (1/1) ... [2022-11-02 21:11:56,915 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:56" (1/1) ... [2022-11-02 21:11:56,916 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:56" (1/1) ... [2022-11-02 21:11:56,917 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:56" (1/1) ... [2022-11-02 21:11:56,919 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:11:56,920 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:11:56,920 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:11:56,920 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:11:56,922 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:56" (1/1) ... [2022-11-02 21:11:56,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:11:56,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bf997bc-4b51-4768-8d1f-66c298535d98/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:11:56,959 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bf997bc-4b51-4768-8d1f-66c298535d98/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:11:56,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bf997bc-4b51-4768-8d1f-66c298535d98/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:11:57,015 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 21:11:57,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 21:11:57,016 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2022-11-02 21:11:57,016 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2022-11-02 21:11:57,016 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2022-11-02 21:11:57,017 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2022-11-02 21:11:57,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:11:57,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:11:57,093 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:11:57,095 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:11:57,323 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:11:57,331 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:11:57,332 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-02 21:11:57,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:11:57 BoogieIcfgContainer [2022-11-02 21:11:57,351 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:11:57,353 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:11:57,354 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:11:57,358 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:11:57,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:11:56" (1/3) ... [2022-11-02 21:11:57,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ce0e47b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:11:57, skipping insertion in model container [2022-11-02 21:11:57,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:56" (2/3) ... [2022-11-02 21:11:57,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ce0e47b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:11:57, skipping insertion in model container [2022-11-02 21:11:57,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:11:57" (3/3) ... [2022-11-02 21:11:57,362 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_2calls_6-2.c [2022-11-02 21:11:57,418 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:11:57,418 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 21:11:57,493 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:11:57,501 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@ff44964, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:11:57,501 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 21:11:57,506 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 20 states have (on average 1.3) internal successors, (26), 21 states have internal predecessors, (26), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-02 21:11:57,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-02 21:11:57,516 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:11:57,517 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:11:57,518 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:11:57,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:57,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1123300790, now seen corresponding path program 1 times [2022-11-02 21:11:57,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:11:57,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835346672] [2022-11-02 21:11:57,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:57,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:11:57,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:57,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:11:57,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:57,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:11:57,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:11:57,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835346672] [2022-11-02 21:11:57,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835346672] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:11:57,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:11:57,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:11:57,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721845308] [2022-11-02 21:11:58,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:11:58,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:11:58,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:11:58,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:11:58,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:11:58,064 INFO L87 Difference]: Start difference. First operand has 29 states, 20 states have (on average 1.3) internal successors, (26), 21 states have internal predecessors, (26), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 21:11:58,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:11:58,169 INFO L93 Difference]: Finished difference Result 43 states and 51 transitions. [2022-11-02 21:11:58,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:11:58,172 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2022-11-02 21:11:58,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:11:58,187 INFO L225 Difference]: With dead ends: 43 [2022-11-02 21:11:58,188 INFO L226 Difference]: Without dead ends: 27 [2022-11-02 21:11:58,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:11:58,198 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 4 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:11:58,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 123 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:11:58,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-02 21:11:58,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-11-02 21:11:58,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2022-11-02 21:11:58,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2022-11-02 21:11:58,272 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 34 transitions. Word has length 10 [2022-11-02 21:11:58,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:11:58,273 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 34 transitions. [2022-11-02 21:11:58,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 21:11:58,275 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2022-11-02 21:11:58,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 21:11:58,278 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:11:58,279 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:11:58,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 21:11:58,279 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:11:58,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:58,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1177745932, now seen corresponding path program 1 times [2022-11-02 21:11:58,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:11:58,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645476256] [2022-11-02 21:11:58,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:58,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:11:58,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:58,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:11:58,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:58,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:11:58,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:11:58,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645476256] [2022-11-02 21:11:58,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645476256] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:11:58,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:11:58,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:11:58,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189760901] [2022-11-02 21:11:58,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:11:58,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:11:58,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:11:58,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:11:58,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:11:58,473 INFO L87 Difference]: Start difference. First operand 27 states and 34 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 21:11:58,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:11:58,523 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2022-11-02 21:11:58,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:11:58,524 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-11-02 21:11:58,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:11:58,527 INFO L225 Difference]: With dead ends: 33 [2022-11-02 21:11:58,527 INFO L226 Difference]: Without dead ends: 29 [2022-11-02 21:11:58,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:11:58,533 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:11:58,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 122 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:11:58,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-02 21:11:58,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2022-11-02 21:11:58,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2022-11-02 21:11:58,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2022-11-02 21:11:58,552 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 34 transitions. Word has length 11 [2022-11-02 21:11:58,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:11:58,553 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 34 transitions. [2022-11-02 21:11:58,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-02 21:11:58,555 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2022-11-02 21:11:58,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-02 21:11:58,558 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:11:58,559 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:11:58,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 21:11:58,560 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:11:58,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:58,562 INFO L85 PathProgramCache]: Analyzing trace with hash 2110588723, now seen corresponding path program 1 times [2022-11-02 21:11:58,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:11:58,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939401859] [2022-11-02 21:11:58,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:58,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:11:58,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:58,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:11:58,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:58,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:11:58,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:58,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 21:11:58,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:58,775 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:11:58,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:11:58,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939401859] [2022-11-02 21:11:58,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939401859] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:11:58,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310516530] [2022-11-02 21:11:58,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:58,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:11:58,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bf997bc-4b51-4768-8d1f-66c298535d98/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:11:58,781 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bf997bc-4b51-4768-8d1f-66c298535d98/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:11:58,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bf997bc-4b51-4768-8d1f-66c298535d98/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 21:11:58,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:58,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:11:58,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:11:59,009 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:11:59,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:11:59,282 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:11:59,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310516530] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:11:59,283 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:11:59,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 13 [2022-11-02 21:11:59,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337248904] [2022-11-02 21:11:59,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:11:59,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-02 21:11:59,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:11:59,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-02 21:11:59,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-11-02 21:11:59,285 INFO L87 Difference]: Start difference. First operand 27 states and 34 transitions. Second operand has 13 states, 10 states have (on average 3.2) internal successors, (32), 13 states have internal predecessors, (32), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-02 21:11:59,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:11:59,532 INFO L93 Difference]: Finished difference Result 55 states and 75 transitions. [2022-11-02 21:11:59,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 21:11:59,533 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 3.2) internal successors, (32), 13 states have internal predecessors, (32), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 8 states have call successors, (8) Word has length 23 [2022-11-02 21:11:59,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:11:59,537 INFO L225 Difference]: With dead ends: 55 [2022-11-02 21:11:59,537 INFO L226 Difference]: Without dead ends: 31 [2022-11-02 21:11:59,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:11:59,540 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 32 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:11:59,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 112 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:11:59,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-02 21:11:59,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2022-11-02 21:11:59,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 21 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2022-11-02 21:11:59,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2022-11-02 21:11:59,549 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 23 [2022-11-02 21:11:59,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:11:59,549 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2022-11-02 21:11:59,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 3.2) internal successors, (32), 13 states have internal predecessors, (32), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-02 21:11:59,550 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2022-11-02 21:11:59,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-02 21:11:59,552 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:11:59,552 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:11:59,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bf997bc-4b51-4768-8d1f-66c298535d98/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 21:11:59,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bf997bc-4b51-4768-8d1f-66c298535d98/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:11:59,769 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:11:59,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:59,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1277869167, now seen corresponding path program 1 times [2022-11-02 21:11:59,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:11:59,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186219946] [2022-11-02 21:11:59,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:59,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:11:59,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:59,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:11:59,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:59,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:11:59,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:59,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-02 21:11:59,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:59,973 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:11:59,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:11:59,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186219946] [2022-11-02 21:11:59,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186219946] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:11:59,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183346799] [2022-11-02 21:11:59,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:59,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:11:59,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bf997bc-4b51-4768-8d1f-66c298535d98/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:11:59,976 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bf997bc-4b51-4768-8d1f-66c298535d98/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:12:00,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bf997bc-4b51-4768-8d1f-66c298535d98/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 21:12:00,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:00,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:12:00,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:12:00,100 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:12:00,100 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:12:00,276 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:12:00,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183346799] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:12:00,277 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:12:00,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 13 [2022-11-02 21:12:00,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071100919] [2022-11-02 21:12:00,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:12:00,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-02 21:12:00,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:00,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-02 21:12:00,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-11-02 21:12:00,279 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand has 13 states, 11 states have (on average 2.909090909090909) internal successors, (32), 13 states have internal predecessors, (32), 7 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-02 21:12:00,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:00,484 INFO L93 Difference]: Finished difference Result 51 states and 71 transitions. [2022-11-02 21:12:00,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:12:00,485 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.909090909090909) internal successors, (32), 13 states have internal predecessors, (32), 7 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 7 states have call successors, (7) Word has length 24 [2022-11-02 21:12:00,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:00,488 INFO L225 Difference]: With dead ends: 51 [2022-11-02 21:12:00,488 INFO L226 Difference]: Without dead ends: 47 [2022-11-02 21:12:00,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2022-11-02 21:12:00,490 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 32 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:00,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 92 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:12:00,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-11-02 21:12:00,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2022-11-02 21:12:00,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 31 states have internal predecessors, (38), 9 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (15), 9 states have call predecessors, (15), 9 states have call successors, (15) [2022-11-02 21:12:00,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 62 transitions. [2022-11-02 21:12:00,503 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 62 transitions. Word has length 24 [2022-11-02 21:12:00,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:00,504 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 62 transitions. [2022-11-02 21:12:00,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 2.909090909090909) internal successors, (32), 13 states have internal predecessors, (32), 7 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-02 21:12:00,504 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 62 transitions. [2022-11-02 21:12:00,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-02 21:12:00,506 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:00,506 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-02 21:12:00,537 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bf997bc-4b51-4768-8d1f-66c298535d98/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 21:12:00,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bf997bc-4b51-4768-8d1f-66c298535d98/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:12:00,718 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:00,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:00,719 INFO L85 PathProgramCache]: Analyzing trace with hash -2061621832, now seen corresponding path program 1 times [2022-11-02 21:12:00,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:00,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293806021] [2022-11-02 21:12:00,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:00,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:00,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:00,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:12:00,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:00,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:12:00,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:00,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:12:00,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:00,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 21:12:00,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:00,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-02 21:12:00,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:00,916 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-02 21:12:00,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:00,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293806021] [2022-11-02 21:12:00,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293806021] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:12:00,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286025998] [2022-11-02 21:12:00,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:00,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:12:00,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bf997bc-4b51-4768-8d1f-66c298535d98/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:12:00,926 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bf997bc-4b51-4768-8d1f-66c298535d98/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:12:00,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bf997bc-4b51-4768-8d1f-66c298535d98/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 21:12:00,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:00,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 21:12:00,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:12:01,092 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 21:12:01,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:12:01,530 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 21:12:01,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [286025998] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:12:01,531 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:12:01,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 9] total 15 [2022-11-02 21:12:01,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988761974] [2022-11-02 21:12:01,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:12:01,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-02 21:12:01,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:01,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-02 21:12:01,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2022-11-02 21:12:01,534 INFO L87 Difference]: Start difference. First operand 45 states and 62 transitions. Second operand has 15 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 15 states have internal predecessors, (47), 11 states have call successors, (13), 1 states have call predecessors, (13), 5 states have return successors, (13), 3 states have call predecessors, (13), 11 states have call successors, (13) [2022-11-02 21:12:01,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:01,894 INFO L93 Difference]: Finished difference Result 105 states and 167 transitions. [2022-11-02 21:12:01,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 21:12:01,895 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 15 states have internal predecessors, (47), 11 states have call successors, (13), 1 states have call predecessors, (13), 5 states have return successors, (13), 3 states have call predecessors, (13), 11 states have call successors, (13) Word has length 36 [2022-11-02 21:12:01,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:01,896 INFO L225 Difference]: With dead ends: 105 [2022-11-02 21:12:01,896 INFO L226 Difference]: Without dead ends: 63 [2022-11-02 21:12:01,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 76 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2022-11-02 21:12:01,898 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 65 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:01,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 95 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:12:01,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-11-02 21:12:01,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2022-11-02 21:12:01,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 41 states have (on average 1.2439024390243902) internal successors, (51), 44 states have internal predecessors, (51), 12 states have call successors, (12), 5 states have call predecessors, (12), 9 states have return successors, (29), 13 states have call predecessors, (29), 12 states have call successors, (29) [2022-11-02 21:12:01,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 92 transitions. [2022-11-02 21:12:01,912 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 92 transitions. Word has length 36 [2022-11-02 21:12:01,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:01,913 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 92 transitions. [2022-11-02 21:12:01,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 15 states have internal predecessors, (47), 11 states have call successors, (13), 1 states have call predecessors, (13), 5 states have return successors, (13), 3 states have call predecessors, (13), 11 states have call successors, (13) [2022-11-02 21:12:01,913 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 92 transitions. [2022-11-02 21:12:01,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-02 21:12:01,915 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:01,915 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-02 21:12:01,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bf997bc-4b51-4768-8d1f-66c298535d98/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 21:12:02,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bf997bc-4b51-4768-8d1f-66c298535d98/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:12:02,138 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:02,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:02,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1167294498, now seen corresponding path program 1 times [2022-11-02 21:12:02,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:02,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648188159] [2022-11-02 21:12:02,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:02,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:02,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:02,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:12:02,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:02,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:12:02,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:02,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:12:02,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:02,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-02 21:12:02,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:02,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-02 21:12:02,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:02,441 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-02 21:12:02,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:02,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648188159] [2022-11-02 21:12:02,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648188159] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:12:02,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368761470] [2022-11-02 21:12:02,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:02,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:12:02,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bf997bc-4b51-4768-8d1f-66c298535d98/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:12:02,450 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bf997bc-4b51-4768-8d1f-66c298535d98/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:12:02,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bf997bc-4b51-4768-8d1f-66c298535d98/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 21:12:02,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:02,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 21:12:02,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:12:02,633 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-02 21:12:02,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:12:03,019 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 21:12:03,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368761470] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:12:03,019 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:12:03,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 18 [2022-11-02 21:12:03,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942832491] [2022-11-02 21:12:03,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:12:03,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 21:12:03,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:03,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 21:12:03,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:12:03,023 INFO L87 Difference]: Start difference. First operand 63 states and 92 transitions. Second operand has 18 states, 16 states have (on average 3.125) internal successors, (50), 18 states have internal predecessors, (50), 11 states have call successors, (13), 1 states have call predecessors, (13), 7 states have return successors, (13), 6 states have call predecessors, (13), 11 states have call successors, (13) [2022-11-02 21:12:03,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:03,595 INFO L93 Difference]: Finished difference Result 177 states and 321 transitions. [2022-11-02 21:12:03,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-02 21:12:03,595 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 3.125) internal successors, (50), 18 states have internal predecessors, (50), 11 states have call successors, (13), 1 states have call predecessors, (13), 7 states have return successors, (13), 6 states have call predecessors, (13), 11 states have call successors, (13) Word has length 37 [2022-11-02 21:12:03,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:03,598 INFO L225 Difference]: With dead ends: 177 [2022-11-02 21:12:03,599 INFO L226 Difference]: Without dead ends: 117 [2022-11-02 21:12:03,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 78 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=530, Unknown=0, NotChecked=0, Total=650 [2022-11-02 21:12:03,601 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 60 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:03,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 222 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:12:03,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-11-02 21:12:03,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 103. [2022-11-02 21:12:03,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 66 states have (on average 1.2121212121212122) internal successors, (80), 69 states have internal predecessors, (80), 21 states have call successors, (21), 7 states have call predecessors, (21), 15 states have return successors, (65), 26 states have call predecessors, (65), 21 states have call successors, (65) [2022-11-02 21:12:03,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 166 transitions. [2022-11-02 21:12:03,624 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 166 transitions. Word has length 37 [2022-11-02 21:12:03,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:03,625 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 166 transitions. [2022-11-02 21:12:03,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 3.125) internal successors, (50), 18 states have internal predecessors, (50), 11 states have call successors, (13), 1 states have call predecessors, (13), 7 states have return successors, (13), 6 states have call predecessors, (13), 11 states have call successors, (13) [2022-11-02 21:12:03,625 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 166 transitions. [2022-11-02 21:12:03,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-02 21:12:03,628 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:03,629 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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] [2022-11-02 21:12:03,667 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bf997bc-4b51-4768-8d1f-66c298535d98/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 21:12:03,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bf997bc-4b51-4768-8d1f-66c298535d98/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:12:03,842 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:03,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:03,842 INFO L85 PathProgramCache]: Analyzing trace with hash 384535367, now seen corresponding path program 1 times [2022-11-02 21:12:03,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:03,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563256285] [2022-11-02 21:12:03,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:03,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:03,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:03,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:12:03,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:04,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:12:04,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:04,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:12:04,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:04,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:12:04,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:04,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-02 21:12:04,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:04,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-02 21:12:04,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:04,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-02 21:12:04,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:04,135 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-02 21:12:04,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:04,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563256285] [2022-11-02 21:12:04,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563256285] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:12:04,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457925361] [2022-11-02 21:12:04,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:04,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:12:04,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bf997bc-4b51-4768-8d1f-66c298535d98/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:12:04,137 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bf997bc-4b51-4768-8d1f-66c298535d98/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:12:04,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bf997bc-4b51-4768-8d1f-66c298535d98/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 21:12:04,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:04,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 21:12:04,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:12:04,345 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-02 21:12:04,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:12:05,023 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-02 21:12:05,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [457925361] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:12:05,024 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:12:05,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 11] total 20 [2022-11-02 21:12:05,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432984230] [2022-11-02 21:12:05,025 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:12:05,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-02 21:12:05,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:05,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-02 21:12:05,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2022-11-02 21:12:05,027 INFO L87 Difference]: Start difference. First operand 103 states and 166 transitions. Second operand has 20 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 20 states have internal predecessors, (60), 14 states have call successors, (16), 1 states have call predecessors, (16), 8 states have return successors, (18), 7 states have call predecessors, (18), 14 states have call successors, (18) [2022-11-02 21:12:05,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:05,662 INFO L93 Difference]: Finished difference Result 255 states and 495 transitions. [2022-11-02 21:12:05,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-02 21:12:05,663 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 20 states have internal predecessors, (60), 14 states have call successors, (16), 1 states have call predecessors, (16), 8 states have return successors, (18), 7 states have call predecessors, (18), 14 states have call successors, (18) Word has length 51 [2022-11-02 21:12:05,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:05,666 INFO L225 Difference]: With dead ends: 255 [2022-11-02 21:12:05,667 INFO L226 Difference]: Without dead ends: 155 [2022-11-02 21:12:05,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 110 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=150, Invalid=662, Unknown=0, NotChecked=0, Total=812 [2022-11-02 21:12:05,669 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 76 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:05,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 227 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 21:12:05,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2022-11-02 21:12:05,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 109. [2022-11-02 21:12:05,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 71 states have (on average 1.2253521126760563) internal successors, (87), 72 states have internal predecessors, (87), 24 states have call successors, (24), 9 states have call predecessors, (24), 13 states have return successors, (66), 27 states have call predecessors, (66), 24 states have call successors, (66) [2022-11-02 21:12:05,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 177 transitions. [2022-11-02 21:12:05,695 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 177 transitions. Word has length 51 [2022-11-02 21:12:05,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:05,696 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 177 transitions. [2022-11-02 21:12:05,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 20 states have internal predecessors, (60), 14 states have call successors, (16), 1 states have call predecessors, (16), 8 states have return successors, (18), 7 states have call predecessors, (18), 14 states have call successors, (18) [2022-11-02 21:12:05,696 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 177 transitions. [2022-11-02 21:12:05,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-02 21:12:05,700 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:05,700 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:05,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bf997bc-4b51-4768-8d1f-66c298535d98/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 21:12:05,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bf997bc-4b51-4768-8d1f-66c298535d98/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:12:05,914 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:05,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:05,914 INFO L85 PathProgramCache]: Analyzing trace with hash -586612948, now seen corresponding path program 1 times [2022-11-02 21:12:05,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:05,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321614769] [2022-11-02 21:12:05,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:05,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:05,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:06,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:12:06,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:06,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:12:06,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:06,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:12:06,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:06,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:12:06,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:06,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:12:06,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:06,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-02 21:12:06,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:06,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-02 21:12:06,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:06,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-02 21:12:06,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:06,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 21:12:06,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:06,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:12:06,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:06,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:12:06,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:06,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-02 21:12:06,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:06,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-02 21:12:06,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:06,374 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 40 proven. 57 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-11-02 21:12:06,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:06,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321614769] [2022-11-02 21:12:06,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321614769] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:12:06,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494842983] [2022-11-02 21:12:06,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:06,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:12:06,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bf997bc-4b51-4768-8d1f-66c298535d98/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:12:06,377 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bf997bc-4b51-4768-8d1f-66c298535d98/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:12:06,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bf997bc-4b51-4768-8d1f-66c298535d98/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 21:12:06,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:06,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 21:12:06,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:12:06,660 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 13 proven. 92 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-11-02 21:12:06,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:12:07,834 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 13 proven. 102 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-11-02 21:12:07,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494842983] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:12:07,835 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:12:07,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 13] total 23 [2022-11-02 21:12:07,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859733273] [2022-11-02 21:12:07,836 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:12:07,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-02 21:12:07,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:07,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-02 21:12:07,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2022-11-02 21:12:07,838 INFO L87 Difference]: Start difference. First operand 109 states and 177 transitions. Second operand has 23 states, 22 states have (on average 3.4545454545454546) internal successors, (76), 23 states have internal predecessors, (76), 17 states have call successors, (22), 1 states have call predecessors, (22), 9 states have return successors, (26), 11 states have call predecessors, (26), 17 states have call successors, (26) [2022-11-02 21:12:08,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:08,563 INFO L93 Difference]: Finished difference Result 240 states and 462 transitions. [2022-11-02 21:12:08,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-02 21:12:08,564 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 3.4545454545454546) internal successors, (76), 23 states have internal predecessors, (76), 17 states have call successors, (22), 1 states have call predecessors, (22), 9 states have return successors, (26), 11 states have call predecessors, (26), 17 states have call successors, (26) Word has length 93 [2022-11-02 21:12:08,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:08,567 INFO L225 Difference]: With dead ends: 240 [2022-11-02 21:12:08,567 INFO L226 Difference]: Without dead ends: 107 [2022-11-02 21:12:08,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 194 SyntacticMatches, 6 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=218, Invalid=972, Unknown=0, NotChecked=0, Total=1190 [2022-11-02 21:12:08,571 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 115 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:08,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 185 Invalid, 616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 21:12:08,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-11-02 21:12:08,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 84. [2022-11-02 21:12:08,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 57 states have (on average 1.1754385964912282) internal successors, (67), 58 states have internal predecessors, (67), 14 states have call successors, (14), 8 states have call predecessors, (14), 12 states have return successors, (35), 17 states have call predecessors, (35), 14 states have call successors, (35) [2022-11-02 21:12:08,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 116 transitions. [2022-11-02 21:12:08,618 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 116 transitions. Word has length 93 [2022-11-02 21:12:08,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:08,619 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 116 transitions. [2022-11-02 21:12:08,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 3.4545454545454546) internal successors, (76), 23 states have internal predecessors, (76), 17 states have call successors, (22), 1 states have call predecessors, (22), 9 states have return successors, (26), 11 states have call predecessors, (26), 17 states have call successors, (26) [2022-11-02 21:12:08,620 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 116 transitions. [2022-11-02 21:12:08,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-02 21:12:08,626 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:08,627 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 9, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:08,678 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bf997bc-4b51-4768-8d1f-66c298535d98/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-02 21:12:08,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bf997bc-4b51-4768-8d1f-66c298535d98/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-02 21:12:08,846 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:08,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:08,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1129417830, now seen corresponding path program 1 times [2022-11-02 21:12:08,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:08,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117630549] [2022-11-02 21:12:08,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:08,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:08,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:09,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:12:09,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:09,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:12:09,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:09,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:12:09,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:09,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:12:09,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:09,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:12:09,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:09,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:12:09,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:09,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-02 21:12:09,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:09,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-02 21:12:09,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:09,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-02 21:12:09,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:09,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-02 21:12:09,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:09,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:12:09,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:09,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:12:09,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:09,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:12:09,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:09,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-02 21:12:09,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:09,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-02 21:12:09,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:09,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-02 21:12:09,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:09,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-02 21:12:09,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:09,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:12:09,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:09,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:12:09,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:09,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-02 21:12:09,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:09,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-02 21:12:09,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:09,582 INFO L134 CoverageAnalysis]: Checked inductivity of 564 backedges. 73 proven. 135 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2022-11-02 21:12:09,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:09,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117630549] [2022-11-02 21:12:09,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117630549] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:12:09,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569955435] [2022-11-02 21:12:09,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:09,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:12:09,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bf997bc-4b51-4768-8d1f-66c298535d98/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:12:09,585 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bf997bc-4b51-4768-8d1f-66c298535d98/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:12:09,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bf997bc-4b51-4768-8d1f-66c298535d98/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-02 21:12:09,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:09,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 21:12:09,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:12:09,878 INFO L134 CoverageAnalysis]: Checked inductivity of 564 backedges. 60 proven. 121 refuted. 0 times theorem prover too weak. 383 trivial. 0 not checked. [2022-11-02 21:12:09,878 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:12:10,831 INFO L134 CoverageAnalysis]: Checked inductivity of 564 backedges. 60 proven. 126 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2022-11-02 21:12:10,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569955435] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:12:10,832 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:12:10,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 11] total 21 [2022-11-02 21:12:10,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135512474] [2022-11-02 21:12:10,836 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:12:10,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-02 21:12:10,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:10,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-02 21:12:10,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2022-11-02 21:12:10,839 INFO L87 Difference]: Start difference. First operand 84 states and 116 transitions. Second operand has 21 states, 20 states have (on average 3.5) internal successors, (70), 21 states have internal predecessors, (70), 14 states have call successors, (21), 1 states have call predecessors, (21), 8 states have return successors, (26), 12 states have call predecessors, (26), 14 states have call successors, (26) [2022-11-02 21:12:11,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:11,409 INFO L93 Difference]: Finished difference Result 169 states and 248 transitions. [2022-11-02 21:12:11,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-02 21:12:11,410 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.5) internal successors, (70), 21 states have internal predecessors, (70), 14 states have call successors, (21), 1 states have call predecessors, (21), 8 states have return successors, (26), 12 states have call predecessors, (26), 14 states have call successors, (26) Word has length 148 [2022-11-02 21:12:11,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:11,411 INFO L225 Difference]: With dead ends: 169 [2022-11-02 21:12:11,411 INFO L226 Difference]: Without dead ends: 93 [2022-11-02 21:12:11,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 326 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=164, Invalid=706, Unknown=0, NotChecked=0, Total=870 [2022-11-02 21:12:11,413 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 88 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:11,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 208 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:12:11,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-11-02 21:12:11,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 87. [2022-11-02 21:12:11,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 59 states have (on average 1.1694915254237288) internal successors, (69), 60 states have internal predecessors, (69), 14 states have call successors, (14), 8 states have call predecessors, (14), 13 states have return successors, (35), 18 states have call predecessors, (35), 14 states have call successors, (35) [2022-11-02 21:12:11,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 118 transitions. [2022-11-02 21:12:11,432 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 118 transitions. Word has length 148 [2022-11-02 21:12:11,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:11,433 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 118 transitions. [2022-11-02 21:12:11,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.5) internal successors, (70), 21 states have internal predecessors, (70), 14 states have call successors, (21), 1 states have call predecessors, (21), 8 states have return successors, (26), 12 states have call predecessors, (26), 14 states have call successors, (26) [2022-11-02 21:12:11,433 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 118 transitions. [2022-11-02 21:12:11,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-02 21:12:11,435 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:11,436 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 9, 9, 8, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:11,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bf997bc-4b51-4768-8d1f-66c298535d98/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-02 21:12:11,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bf997bc-4b51-4768-8d1f-66c298535d98/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:12:11,649 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:11,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:11,650 INFO L85 PathProgramCache]: Analyzing trace with hash -2043735506, now seen corresponding path program 2 times [2022-11-02 21:12:11,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:11,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61049278] [2022-11-02 21:12:11,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:11,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:11,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:11,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:12:11,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:11,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:12:12,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:12,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:12:12,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:12,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:12:12,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:12,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:12:12,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:12,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:12:12,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:12,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-02 21:12:12,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:12,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-02 21:12:12,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:12,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-02 21:12:12,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:12,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:12:12,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:12,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-02 21:12:12,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:12,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-02 21:12:12,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:12,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:12:12,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:12,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-02 21:12:12,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:12,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-02 21:12:12,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:12,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:12:12,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:12,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:12:12,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:12,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-02 21:12:12,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:12,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-02 21:12:12,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:12,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:12:12,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:12,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-02 21:12:12,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:12,378 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 112 proven. 115 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2022-11-02 21:12:12,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:12,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61049278] [2022-11-02 21:12:12,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61049278] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:12:12,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291211762] [2022-11-02 21:12:12,379 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:12:12,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:12:12,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bf997bc-4b51-4768-8d1f-66c298535d98/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:12:12,382 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bf997bc-4b51-4768-8d1f-66c298535d98/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:12:12,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bf997bc-4b51-4768-8d1f-66c298535d98/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-02 21:12:12,515 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 21:12:12,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:12:12,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 21:12:12,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:12:12,636 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 80 proven. 101 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked. [2022-11-02 21:12:12,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:12:13,532 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 80 proven. 106 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2022-11-02 21:12:13,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [291211762] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:12:13,532 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:12:13,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 11] total 21 [2022-11-02 21:12:13,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255278488] [2022-11-02 21:12:13,533 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:12:13,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-02 21:12:13,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:13,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-02 21:12:13,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2022-11-02 21:12:13,535 INFO L87 Difference]: Start difference. First operand 87 states and 118 transitions. Second operand has 21 states, 20 states have (on average 3.6) internal successors, (72), 21 states have internal predecessors, (72), 14 states have call successors, (21), 1 states have call predecessors, (21), 8 states have return successors, (26), 13 states have call predecessors, (26), 14 states have call successors, (26) [2022-11-02 21:12:14,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:14,015 INFO L93 Difference]: Finished difference Result 184 states and 267 transitions. [2022-11-02 21:12:14,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-02 21:12:14,016 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.6) internal successors, (72), 21 states have internal predecessors, (72), 14 states have call successors, (21), 1 states have call predecessors, (21), 8 states have return successors, (26), 13 states have call predecessors, (26), 14 states have call successors, (26) Word has length 148 [2022-11-02 21:12:14,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:14,018 INFO L225 Difference]: With dead ends: 184 [2022-11-02 21:12:14,019 INFO L226 Difference]: Without dead ends: 107 [2022-11-02 21:12:14,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 325 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=159, Invalid=711, Unknown=0, NotChecked=0, Total=870 [2022-11-02 21:12:14,021 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 70 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:14,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 207 Invalid, 552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:12:14,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-11-02 21:12:14,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 87. [2022-11-02 21:12:14,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 59 states have (on average 1.1694915254237288) internal successors, (69), 60 states have internal predecessors, (69), 14 states have call successors, (14), 8 states have call predecessors, (14), 13 states have return successors, (33), 18 states have call predecessors, (33), 14 states have call successors, (33) [2022-11-02 21:12:14,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 116 transitions. [2022-11-02 21:12:14,046 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 116 transitions. Word has length 148 [2022-11-02 21:12:14,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:14,047 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 116 transitions. [2022-11-02 21:12:14,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.6) internal successors, (72), 21 states have internal predecessors, (72), 14 states have call successors, (21), 1 states have call predecessors, (21), 8 states have return successors, (26), 13 states have call predecessors, (26), 14 states have call successors, (26) [2022-11-02 21:12:14,047 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 116 transitions. [2022-11-02 21:12:14,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-11-02 21:12:14,050 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:14,050 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 11, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:14,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bf997bc-4b51-4768-8d1f-66c298535d98/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-02 21:12:14,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bf997bc-4b51-4768-8d1f-66c298535d98/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-02 21:12:14,256 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:14,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:14,256 INFO L85 PathProgramCache]: Analyzing trace with hash -552714558, now seen corresponding path program 3 times [2022-11-02 21:12:14,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:14,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754102408] [2022-11-02 21:12:14,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:14,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:14,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:14,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:12:14,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:14,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:12:14,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:14,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:12:14,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:14,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:12:14,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:14,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:12:14,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:14,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:12:14,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:14,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-02 21:12:14,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:14,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-02 21:12:14,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:14,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-02 21:12:14,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:14,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:12:14,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:14,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-02 21:12:14,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:14,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-02 21:12:14,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:14,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:12:14,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:14,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:12:14,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:14,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:12:14,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:14,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-02 21:12:14,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:14,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-02 21:12:14,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:14,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-02 21:12:14,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:14,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:12:14,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:14,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-02 21:12:14,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:14,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-02 21:12:14,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:14,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:12:14,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:14,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:12:14,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:14,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-02 21:12:14,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:14,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-02 21:12:14,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:14,982 INFO L134 CoverageAnalysis]: Checked inductivity of 787 backedges. 207 proven. 121 refuted. 0 times theorem prover too weak. 459 trivial. 0 not checked. [2022-11-02 21:12:14,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:14,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754102408] [2022-11-02 21:12:14,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754102408] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:12:14,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437850481] [2022-11-02 21:12:14,983 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 21:12:14,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:12:14,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bf997bc-4b51-4768-8d1f-66c298535d98/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:12:14,986 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bf997bc-4b51-4768-8d1f-66c298535d98/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:12:15,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bf997bc-4b51-4768-8d1f-66c298535d98/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-02 21:12:15,085 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-02 21:12:15,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:12:15,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 21:12:15,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:12:15,197 INFO L134 CoverageAnalysis]: Checked inductivity of 787 backedges. 135 proven. 32 refuted. 0 times theorem prover too weak. 620 trivial. 0 not checked. [2022-11-02 21:12:15,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:12:15,954 INFO L134 CoverageAnalysis]: Checked inductivity of 787 backedges. 135 proven. 34 refuted. 0 times theorem prover too weak. 618 trivial. 0 not checked. [2022-11-02 21:12:15,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437850481] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:12:15,955 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:12:15,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 8, 9] total 24 [2022-11-02 21:12:15,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036192489] [2022-11-02 21:12:15,956 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:12:15,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-02 21:12:15,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:15,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-02 21:12:15,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=461, Unknown=0, NotChecked=0, Total=552 [2022-11-02 21:12:15,960 INFO L87 Difference]: Start difference. First operand 87 states and 116 transitions. Second operand has 24 states, 23 states have (on average 3.130434782608696) internal successors, (72), 24 states have internal predecessors, (72), 13 states have call successors, (22), 1 states have call predecessors, (22), 10 states have return successors, (26), 18 states have call predecessors, (26), 13 states have call successors, (26) [2022-11-02 21:12:16,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:16,480 INFO L93 Difference]: Finished difference Result 187 states and 270 transitions. [2022-11-02 21:12:16,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-02 21:12:16,481 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.130434782608696) internal successors, (72), 24 states have internal predecessors, (72), 13 states have call successors, (22), 1 states have call predecessors, (22), 10 states have return successors, (26), 18 states have call predecessors, (26), 13 states have call successors, (26) Word has length 174 [2022-11-02 21:12:16,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:16,483 INFO L225 Difference]: With dead ends: 187 [2022-11-02 21:12:16,483 INFO L226 Difference]: Without dead ends: 106 [2022-11-02 21:12:16,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 386 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=174, Invalid=882, Unknown=0, NotChecked=0, Total=1056 [2022-11-02 21:12:16,485 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 90 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:16,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 220 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:12:16,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-11-02 21:12:16,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 87. [2022-11-02 21:12:16,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 59 states have (on average 1.1694915254237288) internal successors, (69), 60 states have internal predecessors, (69), 14 states have call successors, (14), 8 states have call predecessors, (14), 13 states have return successors, (29), 18 states have call predecessors, (29), 14 states have call successors, (29) [2022-11-02 21:12:16,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 112 transitions. [2022-11-02 21:12:16,497 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 112 transitions. Word has length 174 [2022-11-02 21:12:16,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:16,498 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 112 transitions. [2022-11-02 21:12:16,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.130434782608696) internal successors, (72), 24 states have internal predecessors, (72), 13 states have call successors, (22), 1 states have call predecessors, (22), 10 states have return successors, (26), 18 states have call predecessors, (26), 13 states have call successors, (26) [2022-11-02 21:12:16,499 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 112 transitions. [2022-11-02 21:12:16,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2022-11-02 21:12:16,502 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:16,503 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 15, 14, 14, 12, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:16,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bf997bc-4b51-4768-8d1f-66c298535d98/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-02 21:12:16,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bf997bc-4b51-4768-8d1f-66c298535d98/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-02 21:12:16,726 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:16,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:16,726 INFO L85 PathProgramCache]: Analyzing trace with hash -712391191, now seen corresponding path program 4 times [2022-11-02 21:12:16,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:16,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924493230] [2022-11-02 21:12:16,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:16,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:16,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:16,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:12:16,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:17,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:12:17,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:17,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:12:17,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:17,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:12:17,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:17,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:12:17,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:17,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:12:17,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:17,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-02 21:12:17,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:17,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-02 21:12:17,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:17,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-02 21:12:17,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:17,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:12:17,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:17,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-02 21:12:17,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:17,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-02 21:12:17,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:17,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:12:17,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:17,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:12:17,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:17,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-02 21:12:17,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:17,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-02 21:12:17,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:17,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-02 21:12:17,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:17,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:12:17,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:17,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:12:17,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:17,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:12:17,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:17,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:12:17,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:17,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-02 21:12:17,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:17,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-02 21:12:17,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:17,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-02 21:12:17,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:17,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:12:17,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:17,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-02 21:12:17,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:17,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-02 21:12:17,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:17,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:12:17,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:17,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 21:12:17,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:17,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-02 21:12:17,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:17,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-02 21:12:17,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:17,929 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 194 proven. 345 refuted. 0 times theorem prover too weak. 736 trivial. 0 not checked. [2022-11-02 21:12:17,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:17,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924493230] [2022-11-02 21:12:17,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924493230] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:12:17,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517255390] [2022-11-02 21:12:17,930 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-02 21:12:17,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:12:17,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bf997bc-4b51-4768-8d1f-66c298535d98/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:12:17,931 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bf997bc-4b51-4768-8d1f-66c298535d98/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:12:17,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bf997bc-4b51-4768-8d1f-66c298535d98/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-02 21:12:18,060 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-02 21:12:18,060 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:12:18,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 21:12:18,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:12:18,258 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 97 proven. 261 refuted. 0 times theorem prover too weak. 917 trivial. 0 not checked. [2022-11-02 21:12:18,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:12:19,594 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 101 proven. 265 refuted. 0 times theorem prover too weak. 909 trivial. 0 not checked. [2022-11-02 21:12:19,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1517255390] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:12:19,594 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:12:19,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 10, 13] total 33 [2022-11-02 21:12:19,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488420132] [2022-11-02 21:12:19,595 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:12:19,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-02 21:12:19,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:19,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-02 21:12:19,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=906, Unknown=0, NotChecked=0, Total=1056 [2022-11-02 21:12:19,600 INFO L87 Difference]: Start difference. First operand 87 states and 112 transitions. Second operand has 33 states, 32 states have (on average 2.875) internal successors, (92), 33 states have internal predecessors, (92), 19 states have call successors, (28), 1 states have call predecessors, (28), 15 states have return successors, (36), 25 states have call predecessors, (36), 19 states have call successors, (36) [2022-11-02 21:12:20,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:20,916 INFO L93 Difference]: Finished difference Result 250 states and 417 transitions. [2022-11-02 21:12:20,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-02 21:12:20,917 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 2.875) internal successors, (92), 33 states have internal predecessors, (92), 19 states have call successors, (28), 1 states have call predecessors, (28), 15 states have return successors, (36), 25 states have call predecessors, (36), 19 states have call successors, (36) Word has length 217 [2022-11-02 21:12:20,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:20,918 INFO L225 Difference]: With dead ends: 250 [2022-11-02 21:12:20,919 INFO L226 Difference]: Without dead ends: 131 [2022-11-02 21:12:20,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 538 GetRequests, 477 SyntacticMatches, 6 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1036 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=444, Invalid=2748, Unknown=0, NotChecked=0, Total=3192 [2022-11-02 21:12:20,921 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 147 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 1219 mSolverCounterSat, 295 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 1514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 295 IncrementalHoareTripleChecker+Valid, 1219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:20,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 404 Invalid, 1514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [295 Valid, 1219 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-02 21:12:20,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-11-02 21:12:20,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 123. [2022-11-02 21:12:20,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 86 states have (on average 1.1162790697674418) internal successors, (96), 83 states have internal predecessors, (96), 22 states have call successors, (22), 16 states have call predecessors, (22), 14 states have return successors, (30), 23 states have call predecessors, (30), 22 states have call successors, (30) [2022-11-02 21:12:20,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 148 transitions. [2022-11-02 21:12:20,934 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 148 transitions. Word has length 217 [2022-11-02 21:12:20,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:20,935 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 148 transitions. [2022-11-02 21:12:20,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 2.875) internal successors, (92), 33 states have internal predecessors, (92), 19 states have call successors, (28), 1 states have call predecessors, (28), 15 states have return successors, (36), 25 states have call predecessors, (36), 19 states have call successors, (36) [2022-11-02 21:12:20,935 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 148 transitions. [2022-11-02 21:12:20,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-11-02 21:12:20,938 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:20,938 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:20,968 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bf997bc-4b51-4768-8d1f-66c298535d98/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-02 21:12:21,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bf997bc-4b51-4768-8d1f-66c298535d98/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-02 21:12:21,150 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:21,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:21,150 INFO L85 PathProgramCache]: Analyzing trace with hash 521886258, now seen corresponding path program 5 times [2022-11-02 21:12:21,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:21,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599074363] [2022-11-02 21:12:21,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:21,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:21,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:12:21,175 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 21:12:21,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:12:21,224 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 21:12:21,224 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 21:12:21,225 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-02 21:12:21,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-02 21:12:21,231 INFO L444 BasicCegarLoop]: Path program histogram: [5, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:21,236 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 21:12:21,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 09:12:21 BoogieIcfgContainer [2022-11-02 21:12:21,313 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 21:12:21,314 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 21:12:21,314 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 21:12:21,314 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 21:12:21,315 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:11:57" (3/4) ... [2022-11-02 21:12:21,317 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-02 21:12:21,420 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bf997bc-4b51-4768-8d1f-66c298535d98/bin/uautomizer-Dbtcem3rbc/witness.graphml [2022-11-02 21:12:21,420 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 21:12:21,421 INFO L158 Benchmark]: Toolchain (without parser) took 24894.06ms. Allocated memory was 138.4MB in the beginning and 293.6MB in the end (delta: 155.2MB). Free memory was 103.6MB in the beginning and 156.4MB in the end (delta: -52.8MB). Peak memory consumption was 100.8MB. Max. memory is 16.1GB. [2022-11-02 21:12:21,421 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 88.1MB. Free memory was 62.2MB in the beginning and 62.1MB in the end (delta: 29.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:12:21,422 INFO L158 Benchmark]: CACSL2BoogieTranslator took 329.97ms. Allocated memory is still 138.4MB. Free memory was 103.1MB in the beginning and 113.4MB in the end (delta: -10.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-02 21:12:21,422 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.20ms. Allocated memory is still 138.4MB. Free memory was 113.4MB in the beginning and 112.2MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 21:12:21,422 INFO L158 Benchmark]: Boogie Preprocessor took 20.42ms. Allocated memory is still 138.4MB. Free memory was 112.2MB in the beginning and 111.3MB in the end (delta: 904.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:12:21,423 INFO L158 Benchmark]: RCFGBuilder took 431.11ms. Allocated memory is still 138.4MB. Free memory was 111.3MB in the beginning and 100.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-02 21:12:21,423 INFO L158 Benchmark]: TraceAbstraction took 23960.29ms. Allocated memory was 138.4MB in the beginning and 293.6MB in the end (delta: 155.2MB). Free memory was 100.3MB in the beginning and 160.6MB in the end (delta: -60.3MB). Peak memory consumption was 95.4MB. Max. memory is 16.1GB. [2022-11-02 21:12:21,424 INFO L158 Benchmark]: Witness Printer took 106.29ms. Allocated memory is still 293.6MB. Free memory was 160.6MB in the beginning and 156.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-02 21:12:21,425 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 88.1MB. Free memory was 62.2MB in the beginning and 62.1MB in the end (delta: 29.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 329.97ms. Allocated memory is still 138.4MB. Free memory was 103.1MB in the beginning and 113.4MB in the end (delta: -10.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.20ms. Allocated memory is still 138.4MB. Free memory was 113.4MB in the beginning and 112.2MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.42ms. Allocated memory is still 138.4MB. Free memory was 112.2MB in the beginning and 111.3MB in the end (delta: 904.1kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 431.11ms. Allocated memory is still 138.4MB. Free memory was 111.3MB in the beginning and 100.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 23960.29ms. Allocated memory was 138.4MB in the beginning and 293.6MB in the end (delta: 155.2MB). Free memory was 100.3MB in the beginning and 160.6MB in the end (delta: -60.3MB). Peak memory consumption was 95.4MB. Max. memory is 16.1GB. * Witness Printer took 106.29ms. Allocated memory is still 293.6MB. Free memory was 160.6MB in the beginning and 156.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * 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 - CounterExampleResult [Line: 41]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L38] int x = 6; VAL [x=6] [L39] CALL, EXPR fibo1(x) VAL [\old(n)=6] [L10] COND FALSE !(n < 1) VAL [\old(n)=6, n=6] [L12] COND FALSE !(n == 1) VAL [\old(n)=6, n=6] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=5] [L20] COND FALSE !(n < 1) VAL [\old(n)=5, n=5] [L22] COND FALSE !(n == 1) VAL [\old(n)=5, n=5] [L25] CALL, EXPR fibo1(n-1) VAL [\old(n)=4] [L10] COND FALSE !(n < 1) VAL [\old(n)=4, n=4] [L12] COND FALSE !(n == 1) VAL [\old(n)=4, n=4] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=3] [L20] COND FALSE !(n < 1) VAL [\old(n)=3, n=3] [L22] COND FALSE !(n == 1) VAL [\old(n)=3, n=3] [L25] CALL, EXPR fibo1(n-1) VAL [\old(n)=2] [L10] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L12] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=1] [L20] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L22] COND TRUE n == 1 [L23] return 1; VAL [\old(n)=1, \result=1, n=1] [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=2, fibo2(n-1)=1, n=2] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=0] [L20] COND TRUE n < 1 [L21] return 0; VAL [\old(n)=0, \result=0, n=0] [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=2, fibo2(n-1)=1, fibo2(n-2)=0, n=2] [L15] return fibo2(n-1) + fibo2(n-2); [L25] RET, EXPR fibo1(n-1) VAL [\old(n)=3, fibo1(n-1)=1, n=3] [L25] CALL, EXPR fibo1(n-2) VAL [\old(n)=1] [L10] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L12] COND TRUE n == 1 [L13] return 1; VAL [\old(n)=1, \result=1, n=1] [L25] RET, EXPR fibo1(n-2) VAL [\old(n)=3, fibo1(n-1)=1, fibo1(n-2)=1, n=3] [L25] return fibo1(n-1) + fibo1(n-2); [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=4, fibo2(n-1)=2, n=4] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=2] [L20] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L22] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L25] CALL, EXPR fibo1(n-1) VAL [\old(n)=1] [L10] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L12] COND TRUE n == 1 [L13] return 1; VAL [\old(n)=1, \result=1, n=1] [L25] RET, EXPR fibo1(n-1) VAL [\old(n)=2, fibo1(n-1)=1, n=2] [L25] CALL, EXPR fibo1(n-2) VAL [\old(n)=0] [L10] COND TRUE n < 1 [L11] return 0; VAL [\old(n)=0, \result=0, n=0] [L25] RET, EXPR fibo1(n-2) VAL [\old(n)=2, fibo1(n-1)=1, fibo1(n-2)=0, n=2] [L25] return fibo1(n-1) + fibo1(n-2); [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=4, fibo2(n-1)=2, fibo2(n-2)=1, n=4] [L15] return fibo2(n-1) + fibo2(n-2); [L25] RET, EXPR fibo1(n-1) VAL [\old(n)=5, fibo1(n-1)=3, n=5] [L25] CALL, EXPR fibo1(n-2) VAL [\old(n)=3] [L10] COND FALSE !(n < 1) VAL [\old(n)=3, n=3] [L12] COND FALSE !(n == 1) VAL [\old(n)=3, n=3] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=2] [L20] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L22] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L25] CALL, EXPR fibo1(n-1) VAL [\old(n)=1] [L10] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L12] COND TRUE n == 1 [L13] return 1; VAL [\old(n)=1, \result=1, n=1] [L25] RET, EXPR fibo1(n-1) VAL [\old(n)=2, fibo1(n-1)=1, n=2] [L25] CALL, EXPR fibo1(n-2) VAL [\old(n)=0] [L10] COND TRUE n < 1 [L11] return 0; VAL [\old(n)=0, \result=0, n=0] [L25] RET, EXPR fibo1(n-2) VAL [\old(n)=2, fibo1(n-1)=1, fibo1(n-2)=0, n=2] [L25] return fibo1(n-1) + fibo1(n-2); [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=3, fibo2(n-1)=1, n=3] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=1] [L20] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L22] COND TRUE n == 1 [L23] return 1; VAL [\old(n)=1, \result=1, n=1] [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=3, fibo2(n-1)=1, fibo2(n-2)=1, n=3] [L15] return fibo2(n-1) + fibo2(n-2); [L25] RET, EXPR fibo1(n-2) VAL [\old(n)=5, fibo1(n-1)=3, fibo1(n-2)=2, n=5] [L25] return fibo1(n-1) + fibo1(n-2); [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=6, fibo2(n-1)=5, n=6] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=4] [L20] COND FALSE !(n < 1) VAL [\old(n)=4, n=4] [L22] COND FALSE !(n == 1) VAL [\old(n)=4, n=4] [L25] CALL, EXPR fibo1(n-1) VAL [\old(n)=3] [L10] COND FALSE !(n < 1) VAL [\old(n)=3, n=3] [L12] COND FALSE !(n == 1) VAL [\old(n)=3, n=3] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=2] [L20] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L22] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L25] CALL, EXPR fibo1(n-1) VAL [\old(n)=1] [L10] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L12] COND TRUE n == 1 [L13] return 1; VAL [\old(n)=1, \result=1, n=1] [L25] RET, EXPR fibo1(n-1) VAL [\old(n)=2, fibo1(n-1)=1, n=2] [L25] CALL, EXPR fibo1(n-2) VAL [\old(n)=0] [L10] COND TRUE n < 1 [L11] return 0; VAL [\old(n)=0, \result=0, n=0] [L25] RET, EXPR fibo1(n-2) VAL [\old(n)=2, fibo1(n-1)=1, fibo1(n-2)=0, n=2] [L25] return fibo1(n-1) + fibo1(n-2); [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=3, fibo2(n-1)=1, n=3] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=1] [L20] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L22] COND TRUE n == 1 [L23] return 1; VAL [\old(n)=1, \result=1, n=1] [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=3, fibo2(n-1)=1, fibo2(n-2)=1, n=3] [L15] return fibo2(n-1) + fibo2(n-2); [L25] RET, EXPR fibo1(n-1) VAL [\old(n)=4, fibo1(n-1)=2, n=4] [L25] CALL, EXPR fibo1(n-2) VAL [\old(n)=2] [L10] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L12] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L15] CALL, EXPR fibo2(n-1) VAL [\old(n)=1] [L20] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L22] COND TRUE n == 1 [L23] return 1; VAL [\old(n)=1, \result=1, n=1] [L15] RET, EXPR fibo2(n-1) VAL [\old(n)=2, fibo2(n-1)=1, n=2] [L15] CALL, EXPR fibo2(n-2) VAL [\old(n)=0] [L20] COND TRUE n < 1 [L21] return 0; VAL [\old(n)=0, \result=0, n=0] [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=2, fibo2(n-1)=1, fibo2(n-2)=0, n=2] [L15] return fibo2(n-1) + fibo2(n-2); [L25] RET, EXPR fibo1(n-2) VAL [\old(n)=4, fibo1(n-1)=2, fibo1(n-2)=1, n=4] [L25] return fibo1(n-1) + fibo1(n-2); [L15] RET, EXPR fibo2(n-2) VAL [\old(n)=6, fibo2(n-1)=5, fibo2(n-2)=3, n=6] [L15] return fibo2(n-1) + fibo2(n-2); [L39] RET, EXPR fibo1(x) VAL [fibo1(x)=8, x=6] [L39] int result = fibo1(x); [L40] COND TRUE result == 8 VAL [result=8, x=6] [L41] reach_error() VAL [result=8, x=6] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 23.8s, OverallIterations: 13, TraceHistogramMax: 17, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 6.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 846 SdHoareTripleChecker+Valid, 4.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 779 mSDsluCounter, 2217 SdHoareTripleChecker+Invalid, 3.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1862 mSDsCounter, 952 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4673 IncrementalHoareTripleChecker+Invalid, 5625 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 952 mSolverCounterUnsat, 355 mSDtfsCounter, 4673 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2390 GetRequests, 2070 SyntacticMatches, 40 SemanticMatches, 280 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2286 ImplicationChecksByTransitivity, 3.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=123occurred in iteration=12, InterpolantAutomatonStates: 215, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 12 MinimizatonAttempts, 142 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 13.7s InterpolantComputationTime, 2097 NumberOfCodeBlocks, 1942 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 2842 ConstructedInterpolants, 0 QuantifiedInterpolants, 5001 SizeOfPredicates, 35 NumberOfNonLiveVariables, 1959 ConjunctsInSsa, 90 ConjunctsInUnsatCore, 32 InterpolantComputations, 2 PerfectInterpolantSequences, 8275/10407 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 RESULT: Ultimate proved your program to be incorrect! [2022-11-02 21:12:21,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4bf997bc-4b51-4768-8d1f-66c298535d98/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE