./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lamport.2.prop1-func-interl.c --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/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_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lamport.2.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/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 64bit --witnessprinter.graph.data.programhash 9d60a55b16f5ad6b3999f33f18024cdbc3b20d355c20d37aa6c15f3ec14dde93 --- 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 21:09:50,800 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:09:50,803 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:09:50,831 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:09:50,832 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:09:50,833 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:09:50,835 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:09:50,837 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:09:50,838 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:09:50,839 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:09:50,841 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:09:50,842 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:09:50,842 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:09:50,843 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:09:50,845 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:09:50,846 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:09:50,847 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:09:50,848 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:09:50,850 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:09:50,852 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:09:50,853 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:09:50,855 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:09:50,856 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:09:50,857 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:09:50,861 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:09:50,868 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:09:50,869 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:09:50,870 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:09:50,872 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:09:50,873 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:09:50,874 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:09:50,875 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:09:50,876 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:09:50,878 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:09:50,879 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:09:50,880 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:09:50,881 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:09:50,882 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:09:50,882 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:09:50,883 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:09:50,884 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:09:50,885 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-02 21:09:50,931 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:09:50,931 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:09:50,932 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:09:50,932 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:09:50,933 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:09:50,933 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:09:50,934 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:09:50,934 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:09:50,934 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:09:50,935 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:09:50,936 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:09:50,936 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:09:50,936 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:09:50,937 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:09:50,937 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:09:50,937 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:09:50,937 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:09:50,937 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:09:50,938 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:09:50,938 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:09:50,938 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:09:50,938 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:09:50,939 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:09:50,939 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:09:50,939 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:09:50,939 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:09:50,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 21:09:50,941 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:09:50,941 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:09:50,942 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:09:50,942 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_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9d60a55b16f5ad6b3999f33f18024cdbc3b20d355c20d37aa6c15f3ec14dde93 [2022-11-02 21:09:51,233 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:09:51,255 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:09:51,258 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:09:51,259 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:09:51,260 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:09:51,261 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lamport.2.prop1-func-interl.c [2022-11-02 21:09:51,334 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/data/21b6750b6/3fb230d0eab4467292a5157f634198b1/FLAG563cb7ee0 [2022-11-02 21:09:52,036 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:09:52,037 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lamport.2.prop1-func-interl.c [2022-11-02 21:09:52,062 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/data/21b6750b6/3fb230d0eab4467292a5157f634198b1/FLAG563cb7ee0 [2022-11-02 21:09:52,181 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/data/21b6750b6/3fb230d0eab4467292a5157f634198b1 [2022-11-02 21:09:52,185 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:09:52,187 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:09:52,192 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:09:52,192 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:09:52,196 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:09:52,197 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:09:52" (1/1) ... [2022-11-02 21:09:52,200 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f9a2364 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:52, skipping insertion in model container [2022-11-02 21:09:52,200 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:09:52" (1/1) ... [2022-11-02 21:09:52,209 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:09:52,302 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:09:52,601 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_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lamport.2.prop1-func-interl.c[1014,1027] [2022-11-02 21:09:53,032 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:09:53,042 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:09:53,056 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_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lamport.2.prop1-func-interl.c[1014,1027] [2022-11-02 21:09:53,283 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:09:53,295 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:09:53,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:53 WrapperNode [2022-11-02 21:09:53,296 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:09:53,297 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:09:53,297 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:09:53,297 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:09:53,305 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:53" (1/1) ... [2022-11-02 21:09:53,360 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:53" (1/1) ... [2022-11-02 21:09:53,676 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2485 [2022-11-02 21:09:53,677 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:09:53,678 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:09:53,678 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:09:53,678 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:09:53,687 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:53" (1/1) ... [2022-11-02 21:09:53,687 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:53" (1/1) ... [2022-11-02 21:09:53,757 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:53" (1/1) ... [2022-11-02 21:09:53,757 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:53" (1/1) ... [2022-11-02 21:09:53,898 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:53" (1/1) ... [2022-11-02 21:09:53,919 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:53" (1/1) ... [2022-11-02 21:09:53,958 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:53" (1/1) ... [2022-11-02 21:09:53,975 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:53" (1/1) ... [2022-11-02 21:09:54,033 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:09:54,036 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:09:54,037 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:09:54,037 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:09:54,038 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:53" (1/1) ... [2022-11-02 21:09:54,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:09:54,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:09:54,069 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:09:54,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:09:54,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:09:54,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:09:54,692 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:09:54,694 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:11:52,773 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:11:52,782 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:11:52,782 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 21:11:52,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:11:52 BoogieIcfgContainer [2022-11-02 21:11:52,784 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:11:52,786 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:11:52,787 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:11:52,790 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:11:52,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:09:52" (1/3) ... [2022-11-02 21:11:52,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21125ae1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:11:52, skipping insertion in model container [2022-11-02 21:11:52,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:09:53" (2/3) ... [2022-11-02 21:11:52,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21125ae1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:11:52, skipping insertion in model container [2022-11-02 21:11:52,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:11:52" (3/3) ... [2022-11-02 21:11:52,794 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.lamport.2.prop1-func-interl.c [2022-11-02 21:11:52,812 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:11:52,812 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 21:11:52,872 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:11:52,879 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;@15a4af9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:11:52,879 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 21:11:52,883 INFO L276 IsEmpty]: Start isEmpty. Operand has 95 states, 93 states have (on average 1.4946236559139785) internal successors, (139), 94 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:52,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 21:11:52,890 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:11:52,891 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:11:52,891 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:11:52,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:52,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1473645707, now seen corresponding path program 1 times [2022-11-02 21:11:52,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:11:52,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507193158] [2022-11-02 21:11:52,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:52,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:11:53,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:53,841 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 21:11:53,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:11:53,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507193158] [2022-11-02 21:11:53,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507193158] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:11:53,843 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:11:53,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:11:53,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291688859] [2022-11-02 21:11:53,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:11:53,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:11:53,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:11:53,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:11:53,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:11:53,894 INFO L87 Difference]: Start difference. First operand has 95 states, 93 states have (on average 1.4946236559139785) internal successors, (139), 94 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:56,071 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 21:11:58,670 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 21:11:58,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:11:58,753 INFO L93 Difference]: Finished difference Result 261 states and 389 transitions. [2022-11-02 21:11:58,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:11:58,756 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-02 21:11:58,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:11:58,777 INFO L225 Difference]: With dead ends: 261 [2022-11-02 21:11:58,777 INFO L226 Difference]: Without dead ends: 168 [2022-11-02 21:11:58,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:11:58,787 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 221 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-02 21:11:58,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 386 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 2 Unknown, 0 Unchecked, 4.8s Time] [2022-11-02 21:11:58,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-11-02 21:11:58,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 93. [2022-11-02 21:11:58,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.4673913043478262) internal successors, (135), 92 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:58,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 135 transitions. [2022-11-02 21:11:58,845 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 135 transitions. Word has length 11 [2022-11-02 21:11:58,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:11:58,846 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 135 transitions. [2022-11-02 21:11:58,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:58,846 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 135 transitions. [2022-11-02 21:11:58,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 21:11:58,847 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:11:58,847 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:11:58,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 21:11:58,848 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:11:58,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:58,849 INFO L85 PathProgramCache]: Analyzing trace with hash 2011974963, now seen corresponding path program 1 times [2022-11-02 21:11:58,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:11:58,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175353499] [2022-11-02 21:11:58,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:58,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:11:58,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:59,238 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 21:11:59,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:11:59,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175353499] [2022-11-02 21:11:59,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175353499] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:11:59,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:11:59,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:11:59,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354190909] [2022-11-02 21:11:59,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:11:59,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:11:59,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:11:59,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:11:59,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:11:59,249 INFO L87 Difference]: Start difference. First operand 93 states and 135 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:01,345 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 21:12:02,630 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 21:12:04,773 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 21:12:04,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:04,833 INFO L93 Difference]: Finished difference Result 257 states and 376 transitions. [2022-11-02 21:12:04,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:12:04,833 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-02 21:12:04,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:04,835 INFO L225 Difference]: With dead ends: 257 [2022-11-02 21:12:04,835 INFO L226 Difference]: Without dead ends: 168 [2022-11-02 21:12:04,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:12:04,837 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 215 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:04,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 386 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 2 Unknown, 0 Unchecked, 5.5s Time] [2022-11-02 21:12:04,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-11-02 21:12:04,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 95. [2022-11-02 21:12:04,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.4574468085106382) internal successors, (137), 94 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:04,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 137 transitions. [2022-11-02 21:12:04,846 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 137 transitions. Word has length 11 [2022-11-02 21:12:04,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:04,846 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 137 transitions. [2022-11-02 21:12:04,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:04,846 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 137 transitions. [2022-11-02 21:12:04,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 21:12:04,847 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:04,847 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:04,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 21:12:04,848 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:04,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:04,849 INFO L85 PathProgramCache]: Analyzing trace with hash 2069233265, now seen corresponding path program 1 times [2022-11-02 21:12:04,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:04,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044893097] [2022-11-02 21:12:04,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:04,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:04,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:05,234 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 21:12:05,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:05,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044893097] [2022-11-02 21:12:05,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044893097] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:05,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:12:05,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:12:05,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744953552] [2022-11-02 21:12:05,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:05,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:12:05,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:05,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:12:05,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:12:05,237 INFO L87 Difference]: Start difference. First operand 95 states and 137 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:07,315 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 21:12:09,490 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 21:12:09,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:09,557 INFO L93 Difference]: Finished difference Result 257 states and 375 transitions. [2022-11-02 21:12:09,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:12:09,558 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-02 21:12:09,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:09,561 INFO L225 Difference]: With dead ends: 257 [2022-11-02 21:12:09,562 INFO L226 Difference]: Without dead ends: 168 [2022-11-02 21:12:09,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:12:09,566 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 209 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:09,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 387 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 2 Unknown, 0 Unchecked, 4.3s Time] [2022-11-02 21:12:09,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-11-02 21:12:09,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 97. [2022-11-02 21:12:09,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.4479166666666667) internal successors, (139), 96 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:09,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 139 transitions. [2022-11-02 21:12:09,591 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 139 transitions. Word has length 11 [2022-11-02 21:12:09,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:09,591 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 139 transitions. [2022-11-02 21:12:09,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:09,592 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 139 transitions. [2022-11-02 21:12:09,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 21:12:09,592 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:09,593 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:09,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 21:12:09,593 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:09,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:09,594 INFO L85 PathProgramCache]: Analyzing trace with hash 2069292847, now seen corresponding path program 1 times [2022-11-02 21:12:09,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:09,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178240324] [2022-11-02 21:12:09,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:09,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:09,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:12:09,847 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 21:12:09,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:12:10,045 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 21:12:10,046 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 21:12:10,047 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-02 21:12:10,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 21:12:10,052 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-02 21:12:10,056 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 21:12:10,102 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-02 21:12:10,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 09:12:10 BoogieIcfgContainer [2022-11-02 21:12:10,119 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 21:12:10,119 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 21:12:10,120 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 21:12:10,120 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 21:12:10,120 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:11:52" (3/4) ... [2022-11-02 21:12:10,123 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-02 21:12:10,123 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 21:12:10,124 INFO L158 Benchmark]: Toolchain (without parser) took 137936.98ms. Allocated memory was 125.8MB in the beginning and 1.0GB in the end (delta: 901.8MB). Free memory was 90.0MB in the beginning and 761.0MB in the end (delta: -671.1MB). Peak memory consumption was 229.5MB. Max. memory is 16.1GB. [2022-11-02 21:12:10,125 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 96.5MB. Free memory was 51.1MB in the beginning and 51.1MB in the end (delta: 78.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:12:10,125 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1104.17ms. Allocated memory is still 125.8MB. Free memory was 89.7MB in the beginning and 79.2MB in the end (delta: 10.5MB). Peak memory consumption was 64.1MB. Max. memory is 16.1GB. [2022-11-02 21:12:10,125 INFO L158 Benchmark]: Boogie Procedure Inliner took 380.03ms. Allocated memory was 125.8MB in the beginning and 216.0MB in the end (delta: 90.2MB). Free memory was 79.2MB in the beginning and 142.2MB in the end (delta: -63.0MB). Peak memory consumption was 67.3MB. Max. memory is 16.1GB. [2022-11-02 21:12:10,126 INFO L158 Benchmark]: Boogie Preprocessor took 356.05ms. Allocated memory is still 216.0MB. Free memory was 142.2MB in the beginning and 114.0MB in the end (delta: 28.2MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2022-11-02 21:12:10,126 INFO L158 Benchmark]: RCFGBuilder took 118748.92ms. Allocated memory was 216.0MB in the beginning and 1.0GB in the end (delta: 811.6MB). Free memory was 114.0MB in the beginning and 581.9MB in the end (delta: -467.9MB). Peak memory consumption was 606.5MB. Max. memory is 16.1GB. [2022-11-02 21:12:10,127 INFO L158 Benchmark]: TraceAbstraction took 17332.58ms. Allocated memory is still 1.0GB. Free memory was 580.8MB in the beginning and 762.1MB in the end (delta: -181.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:12:10,127 INFO L158 Benchmark]: Witness Printer took 4.09ms. Allocated memory is still 1.0GB. Free memory was 762.1MB in the beginning and 761.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:12:10,129 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 96.5MB. Free memory was 51.1MB in the beginning and 51.1MB in the end (delta: 78.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1104.17ms. Allocated memory is still 125.8MB. Free memory was 89.7MB in the beginning and 79.2MB in the end (delta: 10.5MB). Peak memory consumption was 64.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 380.03ms. Allocated memory was 125.8MB in the beginning and 216.0MB in the end (delta: 90.2MB). Free memory was 79.2MB in the beginning and 142.2MB in the end (delta: -63.0MB). Peak memory consumption was 67.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 356.05ms. Allocated memory is still 216.0MB. Free memory was 142.2MB in the beginning and 114.0MB in the end (delta: 28.2MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * RCFGBuilder took 118748.92ms. Allocated memory was 216.0MB in the beginning and 1.0GB in the end (delta: 811.6MB). Free memory was 114.0MB in the beginning and 581.9MB in the end (delta: -467.9MB). Peak memory consumption was 606.5MB. Max. memory is 16.1GB. * TraceAbstraction took 17332.58ms. Allocated memory is still 1.0GB. Free memory was 580.8MB in the beginning and 762.1MB in the end (delta: -181.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.09ms. Allocated memory is still 1.0GB. Free memory was 762.1MB in the beginning and 761.0MB in the end (delta: 1.0MB). There was no memory consumed. 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 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 299, overapproximation of bitwiseAnd at line 295. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L28] const SORT_2 mask_SORT_2 = (SORT_2)-1 >> (sizeof(SORT_2) * 8 - 8); [L29] const SORT_2 msb_SORT_2 = (SORT_2)1 << (8 - 1); [L31] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 24); [L32] const SORT_3 msb_SORT_3 = (SORT_3)1 << (24 - 1); [L34] const SORT_4 mask_SORT_4 = (SORT_4)-1 >> (sizeof(SORT_4) * 8 - 32); [L35] const SORT_4 msb_SORT_4 = (SORT_4)1 << (32 - 1); [L37] const SORT_2 var_5 = 0; [L38] const SORT_1 var_22 = 0; [L39] const SORT_4 var_85 = 1; [L40] const SORT_4 var_86 = 0; [L41] const SORT_2 var_95 = 0; [L42] const SORT_2 var_96 = 255; [L43] const SORT_2 var_108 = 1; [L44] const SORT_2 var_132 = 2; [L45] const SORT_3 var_169 = 0; [L46] const SORT_4 var_337 = 3; [L47] const SORT_2 var_348 = 3; [L49] SORT_1 input_99; [L50] SORT_1 input_101; [L51] SORT_1 input_103; [L52] SORT_1 input_104; [L53] SORT_1 input_105; [L54] SORT_1 input_107; [L55] SORT_1 input_118; [L56] SORT_1 input_119; [L57] SORT_1 input_121; [L58] SORT_1 input_130; [L59] SORT_1 input_131; [L60] SORT_1 input_135; [L61] SORT_1 input_145; [L62] SORT_1 input_146; [L63] SORT_1 input_147; [L64] SORT_1 input_153; [L65] SORT_1 input_154; [L66] SORT_1 input_155; [L67] SORT_1 input_156; [L68] SORT_1 input_157; [L69] SORT_1 input_158; [L70] SORT_1 input_168; [L71] SORT_1 input_176; [L72] SORT_1 input_183; [L73] SORT_1 input_191; [L74] SORT_1 input_193; [L75] SORT_1 input_197; [L76] SORT_1 input_199; [L77] SORT_1 input_208; [L78] SORT_1 input_222; [L79] SORT_1 input_233; [L80] SORT_1 input_235; [L81] SORT_1 input_239; [L82] SORT_1 input_241; [L83] SORT_1 input_250; [L84] SORT_1 input_264; [L85] SORT_1 input_275; [L86] SORT_1 input_277; [L87] SORT_1 input_281; [L88] SORT_1 input_283; [L89] SORT_1 input_292; [L90] SORT_1 input_306; [L92] SORT_2 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L93] SORT_2 state_8 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L94] SORT_2 state_10 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L95] SORT_2 state_12 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L96] SORT_2 state_14 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L97] SORT_2 state_16 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L98] SORT_2 state_18 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L99] SORT_2 state_20 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L100] SORT_1 state_23 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L101] SORT_1 state_25 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L102] SORT_1 state_27 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L103] SORT_1 state_29 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L104] SORT_1 state_31 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L105] SORT_1 state_33 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L106] SORT_1 state_35 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L107] SORT_1 state_37 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L108] SORT_1 state_39 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L109] SORT_1 state_41 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L110] SORT_1 state_43 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L111] SORT_1 state_45 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L112] SORT_1 state_47 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L113] SORT_1 state_49 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L114] SORT_1 state_51 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L115] SORT_1 state_53 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L116] SORT_1 state_55 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L117] SORT_1 state_57 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L118] SORT_1 state_59 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L119] SORT_1 state_61 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L120] SORT_1 state_63 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L121] SORT_1 state_65 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L122] SORT_1 state_67 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L123] SORT_1 state_69 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L124] SORT_1 state_71 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L125] SORT_1 state_73 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L126] SORT_1 state_75 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L127] SORT_1 state_77 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L128] SORT_1 state_79 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L129] SORT_1 state_81 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L130] SORT_1 state_83 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L132] SORT_2 init_7_arg_1 = var_5; [L133] state_6 = init_7_arg_1 [L134] SORT_2 init_9_arg_1 = var_5; [L135] state_8 = init_9_arg_1 [L136] SORT_2 init_11_arg_1 = var_5; [L137] state_10 = init_11_arg_1 [L138] SORT_2 init_13_arg_1 = var_5; [L139] state_12 = init_13_arg_1 [L140] SORT_2 init_15_arg_1 = var_5; [L141] state_14 = init_15_arg_1 [L142] SORT_2 init_17_arg_1 = var_5; [L143] state_16 = init_17_arg_1 [L144] SORT_2 init_19_arg_1 = var_5; [L145] state_18 = init_19_arg_1 [L146] SORT_2 init_21_arg_1 = var_5; [L147] state_20 = init_21_arg_1 [L148] SORT_1 init_24_arg_1 = var_22; [L149] state_23 = init_24_arg_1 [L150] SORT_1 init_26_arg_1 = var_22; [L151] state_25 = init_26_arg_1 [L152] SORT_1 init_28_arg_1 = var_22; [L153] state_27 = init_28_arg_1 [L154] SORT_1 init_30_arg_1 = var_22; [L155] state_29 = init_30_arg_1 [L156] SORT_1 init_32_arg_1 = var_22; [L157] state_31 = init_32_arg_1 [L158] SORT_1 init_34_arg_1 = var_22; [L159] state_33 = init_34_arg_1 [L160] SORT_1 init_36_arg_1 = var_22; [L161] state_35 = init_36_arg_1 [L162] SORT_1 init_38_arg_1 = var_22; [L163] state_37 = init_38_arg_1 [L164] SORT_1 init_40_arg_1 = var_22; [L165] state_39 = init_40_arg_1 [L166] SORT_1 init_42_arg_1 = var_22; [L167] state_41 = init_42_arg_1 [L168] SORT_1 init_44_arg_1 = var_22; [L169] state_43 = init_44_arg_1 [L170] SORT_1 init_46_arg_1 = var_22; [L171] state_45 = init_46_arg_1 [L172] SORT_1 init_48_arg_1 = var_22; [L173] state_47 = init_48_arg_1 [L174] SORT_1 init_50_arg_1 = var_22; [L175] state_49 = init_50_arg_1 [L176] SORT_1 init_52_arg_1 = var_22; [L177] state_51 = init_52_arg_1 [L178] SORT_1 init_54_arg_1 = var_22; [L179] state_53 = init_54_arg_1 [L180] SORT_1 init_56_arg_1 = var_22; [L181] state_55 = init_56_arg_1 [L182] SORT_1 init_58_arg_1 = var_22; [L183] state_57 = init_58_arg_1 [L184] SORT_1 init_60_arg_1 = var_22; [L185] state_59 = init_60_arg_1 [L186] SORT_1 init_62_arg_1 = var_22; [L187] state_61 = init_62_arg_1 [L188] SORT_1 init_64_arg_1 = var_22; [L189] state_63 = init_64_arg_1 [L190] SORT_1 init_66_arg_1 = var_22; [L191] state_65 = init_66_arg_1 [L192] SORT_1 init_68_arg_1 = var_22; [L193] state_67 = init_68_arg_1 [L194] SORT_1 init_70_arg_1 = var_22; [L195] state_69 = init_70_arg_1 [L196] SORT_1 init_72_arg_1 = var_22; [L197] state_71 = init_72_arg_1 [L198] SORT_1 init_74_arg_1 = var_22; [L199] state_73 = init_74_arg_1 [L200] SORT_1 init_76_arg_1 = var_22; [L201] state_75 = init_76_arg_1 [L202] SORT_1 init_78_arg_1 = var_22; [L203] state_77 = init_78_arg_1 [L204] SORT_1 init_80_arg_1 = var_22; [L205] state_79 = init_80_arg_1 [L206] SORT_1 init_82_arg_1 = var_22; [L207] state_81 = init_82_arg_1 [L208] SORT_1 init_84_arg_1 = var_22; [L209] state_83 = init_84_arg_1 VAL [init_11_arg_1=0, init_13_arg_1=0, init_15_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_24_arg_1=0, init_26_arg_1=0, init_28_arg_1=0, init_30_arg_1=0, init_32_arg_1=0, init_34_arg_1=0, init_36_arg_1=0, init_38_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_46_arg_1=0, init_48_arg_1=0, init_50_arg_1=0, init_52_arg_1=0, init_54_arg_1=0, init_56_arg_1=0, init_58_arg_1=0, init_60_arg_1=0, init_62_arg_1=0, init_64_arg_1=0, init_66_arg_1=0, init_68_arg_1=0, init_70_arg_1=0, init_72_arg_1=0, init_74_arg_1=0, init_76_arg_1=0, init_78_arg_1=0, init_7_arg_1=0, init_80_arg_1=0, init_82_arg_1=0, init_84_arg_1=0, init_9_arg_1=0, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=4294967295, mask_SORT_4=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=8388608, msb_SORT_4=2147483648, state_10=0, state_12=0, state_14=0, state_16=0, state_18=0, state_20=0, state_23=0, state_25=0, state_27=0, state_29=0, state_31=0, state_33=0, state_35=0, state_37=0, state_39=0, state_41=0, state_43=0, state_45=0, state_47=0, state_49=0, state_51=0, state_53=0, state_55=0, state_57=0, state_59=0, state_6=0, state_61=0, state_63=0, state_65=0, state_67=0, state_69=0, state_71=0, state_73=0, state_75=0, state_77=0, state_79=0, state_8=0, state_81=0, state_83=0, var_108=1, var_132=2, var_169=0, var_22=0, var_337=3, var_348=3, var_5=0, var_85=1, var_86=0, var_95=0, var_96=255] [L212] input_99 = __VERIFIER_nondet_uchar() [L213] input_101 = __VERIFIER_nondet_uchar() [L214] input_103 = __VERIFIER_nondet_uchar() [L215] input_103 = input_103 & mask_SORT_1 [L216] input_104 = __VERIFIER_nondet_uchar() [L217] input_104 = input_104 & mask_SORT_1 [L218] input_105 = __VERIFIER_nondet_uchar() [L219] input_107 = __VERIFIER_nondet_uchar() [L220] input_107 = input_107 & mask_SORT_1 [L221] input_118 = __VERIFIER_nondet_uchar() [L222] input_118 = input_118 & mask_SORT_1 [L223] input_119 = __VERIFIER_nondet_uchar() [L224] input_119 = input_119 & mask_SORT_1 [L225] input_121 = __VERIFIER_nondet_uchar() [L226] input_121 = input_121 & mask_SORT_1 [L227] input_130 = __VERIFIER_nondet_uchar() [L228] input_130 = input_130 & mask_SORT_1 [L229] input_131 = __VERIFIER_nondet_uchar() [L230] input_131 = input_131 & mask_SORT_1 [L231] input_135 = __VERIFIER_nondet_uchar() [L232] input_135 = input_135 & mask_SORT_1 [L233] input_145 = __VERIFIER_nondet_uchar() [L234] input_145 = input_145 & mask_SORT_1 [L235] input_146 = __VERIFIER_nondet_uchar() [L236] input_146 = input_146 & mask_SORT_1 [L237] input_147 = __VERIFIER_nondet_uchar() [L238] input_147 = input_147 & mask_SORT_1 [L239] input_153 = __VERIFIER_nondet_uchar() [L240] input_153 = input_153 & mask_SORT_1 [L241] input_154 = __VERIFIER_nondet_uchar() [L242] input_154 = input_154 & mask_SORT_1 [L243] input_155 = __VERIFIER_nondet_uchar() [L244] input_155 = input_155 & mask_SORT_1 [L245] input_156 = __VERIFIER_nondet_uchar() [L246] input_156 = input_156 & mask_SORT_1 [L247] input_157 = __VERIFIER_nondet_uchar() [L248] input_157 = input_157 & mask_SORT_1 [L249] input_158 = __VERIFIER_nondet_uchar() [L250] input_158 = input_158 & mask_SORT_1 [L251] input_168 = __VERIFIER_nondet_uchar() [L252] input_168 = input_168 & mask_SORT_1 [L253] input_176 = __VERIFIER_nondet_uchar() [L254] input_176 = input_176 & mask_SORT_1 [L255] input_183 = __VERIFIER_nondet_uchar() [L256] input_183 = input_183 & mask_SORT_1 [L257] input_191 = __VERIFIER_nondet_uchar() [L258] input_193 = __VERIFIER_nondet_uchar() [L259] input_197 = __VERIFIER_nondet_uchar() [L260] input_199 = __VERIFIER_nondet_uchar() [L261] input_208 = __VERIFIER_nondet_uchar() [L262] input_222 = __VERIFIER_nondet_uchar() [L263] input_233 = __VERIFIER_nondet_uchar() [L264] input_235 = __VERIFIER_nondet_uchar() [L265] input_239 = __VERIFIER_nondet_uchar() [L266] input_241 = __VERIFIER_nondet_uchar() [L267] input_250 = __VERIFIER_nondet_uchar() [L268] input_264 = __VERIFIER_nondet_uchar() [L269] input_275 = __VERIFIER_nondet_uchar() [L270] input_277 = __VERIFIER_nondet_uchar() [L271] input_281 = __VERIFIER_nondet_uchar() [L272] input_283 = __VERIFIER_nondet_uchar() [L273] input_292 = __VERIFIER_nondet_uchar() [L274] input_306 = __VERIFIER_nondet_uchar() [L277] SORT_1 var_87_arg_0 = state_25; [L278] SORT_4 var_87_arg_1 = var_85; [L279] SORT_4 var_87_arg_2 = var_86; VAL [init_11_arg_1=0, init_13_arg_1=0, init_15_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_24_arg_1=0, init_26_arg_1=0, init_28_arg_1=0, init_30_arg_1=0, init_32_arg_1=0, init_34_arg_1=0, init_36_arg_1=0, init_38_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_46_arg_1=0, init_48_arg_1=0, init_50_arg_1=0, init_52_arg_1=0, init_54_arg_1=0, init_56_arg_1=0, init_58_arg_1=0, init_60_arg_1=0, init_62_arg_1=0, init_64_arg_1=0, init_66_arg_1=0, init_68_arg_1=0, init_70_arg_1=0, init_72_arg_1=0, init_74_arg_1=0, init_76_arg_1=0, init_78_arg_1=0, init_7_arg_1=0, init_80_arg_1=0, init_82_arg_1=0, init_84_arg_1=0, init_9_arg_1=0, input_101=13, input_103=1, input_104=1, input_105=6, input_107=0, input_118=0, input_119=1, input_121=0, input_130=0, input_131=1, input_135=1, input_145=1, input_146=0, input_147=0, input_153=1, input_154=0, input_155=0, input_156=0, input_157=0, input_158=0, input_168=0, input_176=1, input_183=0, input_191=5, input_193=8, input_197=3, input_199=12, input_208=7, input_222=21, input_233=19, input_235=14, input_239=10, input_241=4, input_250=20, input_264=2, input_275=1, input_277=9, input_281=16, input_283=15, input_292=18, input_306=17, input_99=11, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=4294967295, mask_SORT_4=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=8388608, msb_SORT_4=2147483648, state_10=0, state_12=0, state_14=0, state_16=0, state_18=0, state_20=0, state_23=0, state_25=0, state_27=0, state_29=0, state_31=0, state_33=0, state_35=0, state_37=0, state_39=0, state_41=0, state_43=0, state_45=0, state_47=0, state_49=0, state_51=0, state_53=0, state_55=0, state_57=0, state_59=0, state_6=0, state_61=0, state_63=0, state_65=0, state_67=0, state_69=0, state_71=0, state_73=0, state_75=0, state_77=0, state_79=0, state_8=0, state_81=0, state_83=0, var_108=1, var_132=2, var_169=0, var_22=0, var_337=3, var_348=3, var_5=0, var_85=1, var_86=0, var_87_arg_0=0, var_87_arg_1=1, var_87_arg_2=0, var_95=0, var_96=255] [L280] EXPR var_87_arg_0 ? var_87_arg_1 : var_87_arg_2 VAL [init_11_arg_1=0, init_13_arg_1=0, init_15_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_24_arg_1=0, init_26_arg_1=0, init_28_arg_1=0, init_30_arg_1=0, init_32_arg_1=0, init_34_arg_1=0, init_36_arg_1=0, init_38_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_46_arg_1=0, init_48_arg_1=0, init_50_arg_1=0, init_52_arg_1=0, init_54_arg_1=0, init_56_arg_1=0, init_58_arg_1=0, init_60_arg_1=0, init_62_arg_1=0, init_64_arg_1=0, init_66_arg_1=0, init_68_arg_1=0, init_70_arg_1=0, init_72_arg_1=0, init_74_arg_1=0, init_76_arg_1=0, init_78_arg_1=0, init_7_arg_1=0, init_80_arg_1=0, init_82_arg_1=0, init_84_arg_1=0, init_9_arg_1=0, input_101=13, input_103=1, input_104=1, input_105=6, input_107=0, input_118=0, input_119=1, input_121=0, input_130=0, input_131=1, input_135=1, input_145=1, input_146=0, input_147=0, input_153=1, input_154=0, input_155=0, input_156=0, input_157=0, input_158=0, input_168=0, input_176=1, input_183=0, input_191=5, input_193=8, input_197=3, input_199=12, input_208=7, input_222=21, input_233=19, input_235=14, input_239=10, input_241=4, input_250=20, input_264=2, input_275=1, input_277=9, input_281=16, input_283=15, input_292=18, input_306=17, input_99=11, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=4294967295, mask_SORT_4=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=8388608, msb_SORT_4=2147483648, state_10=0, state_12=0, state_14=0, state_16=0, state_18=0, state_20=0, state_23=0, state_25=0, state_27=0, state_29=0, state_31=0, state_33=0, state_35=0, state_37=0, state_39=0, state_41=0, state_43=0, state_45=0, state_47=0, state_49=0, state_51=0, state_53=0, state_55=0, state_57=0, state_59=0, state_6=0, state_61=0, state_63=0, state_65=0, state_67=0, state_69=0, state_71=0, state_73=0, state_75=0, state_77=0, state_79=0, state_8=0, state_81=0, state_83=0, var_108=1, var_132=2, var_169=0, var_22=0, var_337=3, var_348=3, var_5=0, var_85=1, var_86=0, var_87_arg_0=0, var_87_arg_0 ? var_87_arg_1 : var_87_arg_2=0, var_87_arg_1=1, var_87_arg_2=0, var_95=0, var_96=255] [L280] SORT_4 var_87 = var_87_arg_0 ? var_87_arg_1 : var_87_arg_2; [L281] SORT_1 var_88_arg_0 = state_45; [L282] SORT_4 var_88_arg_1 = var_85; [L283] SORT_4 var_88_arg_2 = var_86; VAL [init_11_arg_1=0, init_13_arg_1=0, init_15_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_24_arg_1=0, init_26_arg_1=0, init_28_arg_1=0, init_30_arg_1=0, init_32_arg_1=0, init_34_arg_1=0, init_36_arg_1=0, init_38_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_46_arg_1=0, init_48_arg_1=0, init_50_arg_1=0, init_52_arg_1=0, init_54_arg_1=0, init_56_arg_1=0, init_58_arg_1=0, init_60_arg_1=0, init_62_arg_1=0, init_64_arg_1=0, init_66_arg_1=0, init_68_arg_1=0, init_70_arg_1=0, init_72_arg_1=0, init_74_arg_1=0, init_76_arg_1=0, init_78_arg_1=0, init_7_arg_1=0, init_80_arg_1=0, init_82_arg_1=0, init_84_arg_1=0, init_9_arg_1=0, input_101=13, input_103=1, input_104=1, input_105=6, input_107=0, input_118=0, input_119=1, input_121=0, input_130=0, input_131=1, input_135=1, input_145=1, input_146=0, input_147=0, input_153=1, input_154=0, input_155=0, input_156=0, input_157=0, input_158=0, input_168=0, input_176=1, input_183=0, input_191=5, input_193=8, input_197=3, input_199=12, input_208=7, input_222=21, input_233=19, input_235=14, input_239=10, input_241=4, input_250=20, input_264=2, input_275=1, input_277=9, input_281=16, input_283=15, input_292=18, input_306=17, input_99=11, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=4294967295, mask_SORT_4=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=8388608, msb_SORT_4=2147483648, state_10=0, state_12=0, state_14=0, state_16=0, state_18=0, state_20=0, state_23=0, state_25=0, state_27=0, state_29=0, state_31=0, state_33=0, state_35=0, state_37=0, state_39=0, state_41=0, state_43=0, state_45=0, state_47=0, state_49=0, state_51=0, state_53=0, state_55=0, state_57=0, state_59=0, state_6=0, state_61=0, state_63=0, state_65=0, state_67=0, state_69=0, state_71=0, state_73=0, state_75=0, state_77=0, state_79=0, state_8=0, state_81=0, state_83=0, var_108=1, var_132=2, var_169=0, var_22=0, var_337=3, var_348=3, var_5=0, var_85=1, var_86=0, var_87=0, var_87_arg_0=0, var_87_arg_1=1, var_87_arg_2=0, var_88_arg_0=0, var_88_arg_1=1, var_88_arg_2=0, var_95=0, var_96=255] [L284] EXPR var_88_arg_0 ? var_88_arg_1 : var_88_arg_2 VAL [init_11_arg_1=0, init_13_arg_1=0, init_15_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_24_arg_1=0, init_26_arg_1=0, init_28_arg_1=0, init_30_arg_1=0, init_32_arg_1=0, init_34_arg_1=0, init_36_arg_1=0, init_38_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_46_arg_1=0, init_48_arg_1=0, init_50_arg_1=0, init_52_arg_1=0, init_54_arg_1=0, init_56_arg_1=0, init_58_arg_1=0, init_60_arg_1=0, init_62_arg_1=0, init_64_arg_1=0, init_66_arg_1=0, init_68_arg_1=0, init_70_arg_1=0, init_72_arg_1=0, init_74_arg_1=0, init_76_arg_1=0, init_78_arg_1=0, init_7_arg_1=0, init_80_arg_1=0, init_82_arg_1=0, init_84_arg_1=0, init_9_arg_1=0, input_101=13, input_103=1, input_104=1, input_105=6, input_107=0, input_118=0, input_119=1, input_121=0, input_130=0, input_131=1, input_135=1, input_145=1, input_146=0, input_147=0, input_153=1, input_154=0, input_155=0, input_156=0, input_157=0, input_158=0, input_168=0, input_176=1, input_183=0, input_191=5, input_193=8, input_197=3, input_199=12, input_208=7, input_222=21, input_233=19, input_235=14, input_239=10, input_241=4, input_250=20, input_264=2, input_275=1, input_277=9, input_281=16, input_283=15, input_292=18, input_306=17, input_99=11, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=4294967295, mask_SORT_4=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=8388608, msb_SORT_4=2147483648, state_10=0, state_12=0, state_14=0, state_16=0, state_18=0, state_20=0, state_23=0, state_25=0, state_27=0, state_29=0, state_31=0, state_33=0, state_35=0, state_37=0, state_39=0, state_41=0, state_43=0, state_45=0, state_47=0, state_49=0, state_51=0, state_53=0, state_55=0, state_57=0, state_59=0, state_6=0, state_61=0, state_63=0, state_65=0, state_67=0, state_69=0, state_71=0, state_73=0, state_75=0, state_77=0, state_79=0, state_8=0, state_81=0, state_83=0, var_108=1, var_132=2, var_169=0, var_22=0, var_337=3, var_348=3, var_5=0, var_85=1, var_86=0, var_87=0, var_87_arg_0=0, var_87_arg_1=1, var_87_arg_2=0, var_88_arg_0=0, var_88_arg_0 ? var_88_arg_1 : var_88_arg_2=0, var_88_arg_1=1, var_88_arg_2=0, var_95=0, var_96=255] [L284] SORT_4 var_88 = var_88_arg_0 ? var_88_arg_1 : var_88_arg_2; [L285] SORT_4 var_89_arg_0 = var_87; [L286] SORT_4 var_89_arg_1 = var_88; [L287] SORT_4 var_89 = var_89_arg_0 + var_89_arg_1; [L288] SORT_1 var_90_arg_0 = state_65; [L289] SORT_4 var_90_arg_1 = var_85; [L290] SORT_4 var_90_arg_2 = var_86; VAL [init_11_arg_1=0, init_13_arg_1=0, init_15_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_24_arg_1=0, init_26_arg_1=0, init_28_arg_1=0, init_30_arg_1=0, init_32_arg_1=0, init_34_arg_1=0, init_36_arg_1=0, init_38_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_46_arg_1=0, init_48_arg_1=0, init_50_arg_1=0, init_52_arg_1=0, init_54_arg_1=0, init_56_arg_1=0, init_58_arg_1=0, init_60_arg_1=0, init_62_arg_1=0, init_64_arg_1=0, init_66_arg_1=0, init_68_arg_1=0, init_70_arg_1=0, init_72_arg_1=0, init_74_arg_1=0, init_76_arg_1=0, init_78_arg_1=0, init_7_arg_1=0, init_80_arg_1=0, init_82_arg_1=0, init_84_arg_1=0, init_9_arg_1=0, input_101=13, input_103=1, input_104=1, input_105=6, input_107=0, input_118=0, input_119=1, input_121=0, input_130=0, input_131=1, input_135=1, input_145=1, input_146=0, input_147=0, input_153=1, input_154=0, input_155=0, input_156=0, input_157=0, input_158=0, input_168=0, input_176=1, input_183=0, input_191=5, input_193=8, input_197=3, input_199=12, input_208=7, input_222=21, input_233=19, input_235=14, input_239=10, input_241=4, input_250=20, input_264=2, input_275=1, input_277=9, input_281=16, input_283=15, input_292=18, input_306=17, input_99=11, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=4294967295, mask_SORT_4=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=8388608, msb_SORT_4=2147483648, state_10=0, state_12=0, state_14=0, state_16=0, state_18=0, state_20=0, state_23=0, state_25=0, state_27=0, state_29=0, state_31=0, state_33=0, state_35=0, state_37=0, state_39=0, state_41=0, state_43=0, state_45=0, state_47=0, state_49=0, state_51=0, state_53=0, state_55=0, state_57=0, state_59=0, state_6=0, state_61=0, state_63=0, state_65=0, state_67=0, state_69=0, state_71=0, state_73=0, state_75=0, state_77=0, state_79=0, state_8=0, state_81=0, state_83=0, var_108=1, var_132=2, var_169=0, var_22=0, var_337=3, var_348=3, var_5=0, var_85=1, var_86=0, var_87=0, var_87_arg_0=0, var_87_arg_1=1, var_87_arg_2=0, var_88=0, var_88_arg_0=0, var_88_arg_1=1, var_88_arg_2=0, var_89=0, var_89_arg_0=0, var_89_arg_1=0, var_90_arg_0=0, var_90_arg_1=1, var_90_arg_2=0, var_95=0, var_96=255] [L291] EXPR var_90_arg_0 ? var_90_arg_1 : var_90_arg_2 VAL [init_11_arg_1=0, init_13_arg_1=0, init_15_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_24_arg_1=0, init_26_arg_1=0, init_28_arg_1=0, init_30_arg_1=0, init_32_arg_1=0, init_34_arg_1=0, init_36_arg_1=0, init_38_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_46_arg_1=0, init_48_arg_1=0, init_50_arg_1=0, init_52_arg_1=0, init_54_arg_1=0, init_56_arg_1=0, init_58_arg_1=0, init_60_arg_1=0, init_62_arg_1=0, init_64_arg_1=0, init_66_arg_1=0, init_68_arg_1=0, init_70_arg_1=0, init_72_arg_1=0, init_74_arg_1=0, init_76_arg_1=0, init_78_arg_1=0, init_7_arg_1=0, init_80_arg_1=0, init_82_arg_1=0, init_84_arg_1=0, init_9_arg_1=0, input_101=13, input_103=1, input_104=1, input_105=6, input_107=0, input_118=0, input_119=1, input_121=0, input_130=0, input_131=1, input_135=1, input_145=1, input_146=0, input_147=0, input_153=1, input_154=0, input_155=0, input_156=0, input_157=0, input_158=0, input_168=0, input_176=1, input_183=0, input_191=5, input_193=8, input_197=3, input_199=12, input_208=7, input_222=21, input_233=19, input_235=14, input_239=10, input_241=4, input_250=20, input_264=2, input_275=1, input_277=9, input_281=16, input_283=15, input_292=18, input_306=17, input_99=11, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=4294967295, mask_SORT_4=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=8388608, msb_SORT_4=2147483648, state_10=0, state_12=0, state_14=0, state_16=0, state_18=0, state_20=0, state_23=0, state_25=0, state_27=0, state_29=0, state_31=0, state_33=0, state_35=0, state_37=0, state_39=0, state_41=0, state_43=0, state_45=0, state_47=0, state_49=0, state_51=0, state_53=0, state_55=0, state_57=0, state_59=0, state_6=0, state_61=0, state_63=0, state_65=0, state_67=0, state_69=0, state_71=0, state_73=0, state_75=0, state_77=0, state_79=0, state_8=0, state_81=0, state_83=0, var_108=1, var_132=2, var_169=0, var_22=0, var_337=3, var_348=3, var_5=0, var_85=1, var_86=0, var_87=0, var_87_arg_0=0, var_87_arg_1=1, var_87_arg_2=0, var_88=0, var_88_arg_0=0, var_88_arg_1=1, var_88_arg_2=0, var_89=0, var_89_arg_0=0, var_89_arg_1=0, var_90_arg_0=0, var_90_arg_0 ? var_90_arg_1 : var_90_arg_2=0, var_90_arg_1=1, var_90_arg_2=0, var_95=0, var_96=255] [L291] SORT_4 var_90 = var_90_arg_0 ? var_90_arg_1 : var_90_arg_2; [L292] SORT_4 var_91_arg_0 = var_89; [L293] SORT_4 var_91_arg_1 = var_90; [L294] SORT_4 var_91 = var_91_arg_0 + var_91_arg_1; [L295] var_91 = var_91 & mask_SORT_4 [L296] SORT_4 var_92_arg_0 = var_91; [L297] SORT_4 var_92_arg_1 = var_85; [L298] SORT_1 var_92 = var_92_arg_0 <= var_92_arg_1; [L299] SORT_1 var_93_arg_0 = ~state_83; [L300] var_93_arg_0 = var_93_arg_0 & mask_SORT_1 [L301] SORT_1 var_93_arg_1 = ~var_92; [L302] var_93_arg_1 = var_93_arg_1 & mask_SORT_1 [L303] SORT_1 var_93 = var_93_arg_0 & var_93_arg_1; [L304] var_93 = var_93 & mask_SORT_1 [L305] SORT_1 bad_94_arg_0 = var_93; [L306] CALL __VERIFIER_assert(!(bad_94_arg_0)) [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 95 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 17.2s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 14.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 6 mSolverCounterUnknown, 645 SdHoareTripleChecker+Valid, 14.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 645 mSDsluCounter, 1159 SdHoareTripleChecker+Invalid, 14.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 769 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 23 IncrementalHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 390 mSDtfsCounter, 23 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=97occurred in iteration=3, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 219 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 54 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 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 could not prove your program: unable to determine feasibility of some traces [2022-11-02 21:12:10,165 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/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_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lamport.2.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/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 64bit --witnessprinter.graph.data.programhash 9d60a55b16f5ad6b3999f33f18024cdbc3b20d355c20d37aa6c15f3ec14dde93 --- 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 21:12:12,378 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:12:12,380 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:12:12,418 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:12:12,419 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:12:12,424 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:12:12,426 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:12:12,431 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:12:12,433 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:12:12,434 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:12:12,435 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:12:12,436 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:12:12,436 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:12:12,437 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:12:12,438 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:12:12,439 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:12:12,440 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:12:12,443 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:12:12,445 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:12:12,457 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:12:12,459 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:12:12,462 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:12:12,463 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:12:12,463 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:12:12,466 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:12:12,467 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:12:12,467 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:12:12,468 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:12:12,468 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:12:12,469 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:12:12,477 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:12:12,478 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:12:12,480 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:12:12,481 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:12:12,482 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:12:12,483 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:12:12,483 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:12:12,484 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:12:12,484 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:12:12,486 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:12:12,486 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:12:12,487 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-02 21:12:12,511 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:12:12,511 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:12:12,511 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:12:12,512 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:12:12,512 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:12:12,513 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:12:12,513 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:12:12,514 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:12:12,514 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:12:12,514 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:12:12,514 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:12:12,514 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:12:12,515 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:12:12,515 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:12:12,515 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 21:12:12,515 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-02 21:12:12,515 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-02 21:12:12,516 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:12:12,516 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:12:12,516 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:12:12,516 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:12:12,517 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:12:12,517 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:12:12,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:12:12,517 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:12:12,518 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:12:12,518 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:12:12,518 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-02 21:12:12,518 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-02 21:12:12,518 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:12:12,519 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:12:12,519 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:12:12,519 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-02 21:12:12,519 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9d60a55b16f5ad6b3999f33f18024cdbc3b20d355c20d37aa6c15f3ec14dde93 [2022-11-02 21:12:12,903 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:12:12,930 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:12:12,936 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:12:12,937 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:12:12,938 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:12:12,940 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lamport.2.prop1-func-interl.c [2022-11-02 21:12:13,007 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/data/243931724/db3ebb05fda3468aa5dad004996afe65/FLAG3d02c48ab [2022-11-02 21:12:13,745 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:12:13,747 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lamport.2.prop1-func-interl.c [2022-11-02 21:12:13,767 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/data/243931724/db3ebb05fda3468aa5dad004996afe65/FLAG3d02c48ab [2022-11-02 21:12:13,936 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/data/243931724/db3ebb05fda3468aa5dad004996afe65 [2022-11-02 21:12:13,939 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:12:13,940 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:12:13,942 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:12:13,942 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:12:13,949 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:12:13,950 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:12:13" (1/1) ... [2022-11-02 21:12:13,951 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f3d8b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:13, skipping insertion in model container [2022-11-02 21:12:13,954 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:12:13" (1/1) ... [2022-11-02 21:12:13,966 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:12:14,065 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:12:14,257 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_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lamport.2.prop1-func-interl.c[1014,1027] [2022-11-02 21:12:14,720 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:12:14,724 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:12:14,734 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_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.lamport.2.prop1-func-interl.c[1014,1027] [2022-11-02 21:12:14,906 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:12:14,921 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:12:14,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:14 WrapperNode [2022-11-02 21:12:14,922 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:12:14,923 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:12:14,923 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:12:14,924 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:12:14,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:14" (1/1) ... [2022-11-02 21:12:14,991 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:14" (1/1) ... [2022-11-02 21:12:15,087 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2485 [2022-11-02 21:12:15,087 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:12:15,088 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:12:15,088 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:12:15,088 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:12:15,098 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:14" (1/1) ... [2022-11-02 21:12:15,098 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:14" (1/1) ... [2022-11-02 21:12:15,110 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:14" (1/1) ... [2022-11-02 21:12:15,111 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:14" (1/1) ... [2022-11-02 21:12:15,193 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:14" (1/1) ... [2022-11-02 21:12:15,202 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:14" (1/1) ... [2022-11-02 21:12:15,210 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:14" (1/1) ... [2022-11-02 21:12:15,227 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:14" (1/1) ... [2022-11-02 21:12:15,265 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:12:15,265 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:12:15,266 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:12:15,266 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:12:15,266 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:14" (1/1) ... [2022-11-02 21:12:15,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:12:15,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:12:15,302 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:12:15,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:12:15,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:12:15,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:12:15,860 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:12:15,862 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:12:18,200 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:12:18,208 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:12:18,208 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 21:12:18,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:12:18 BoogieIcfgContainer [2022-11-02 21:12:18,210 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:12:18,212 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:12:18,213 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:12:18,215 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:12:18,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:12:13" (1/3) ... [2022-11-02 21:12:18,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@379dce4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:12:18, skipping insertion in model container [2022-11-02 21:12:18,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:12:14" (2/3) ... [2022-11-02 21:12:18,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@379dce4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:12:18, skipping insertion in model container [2022-11-02 21:12:18,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:12:18" (3/3) ... [2022-11-02 21:12:18,219 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.lamport.2.prop1-func-interl.c [2022-11-02 21:12:18,237 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:12:18,237 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 21:12:18,288 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:12:18,295 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;@344009e1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:12:18,296 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 21:12:18,300 INFO L276 IsEmpty]: Start isEmpty. Operand has 95 states, 93 states have (on average 1.4946236559139785) internal successors, (139), 94 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:18,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 21:12:18,307 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:18,308 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:18,309 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:18,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:18,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1473645707, now seen corresponding path program 1 times [2022-11-02 21:12:18,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:12:18,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [87981027] [2022-11-02 21:12:18,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:18,330 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:12:18,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:12:18,337 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:12:18,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-02 21:12:18,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:18,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:12:18,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:12:19,018 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 21:12:19,019 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:12:19,019 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:12:19,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [87981027] [2022-11-02 21:12:19,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [87981027] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:19,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:12:19,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:12:19,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201738695] [2022-11-02 21:12:19,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:19,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:12:19,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:12:19,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:12:19,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:12:19,069 INFO L87 Difference]: Start difference. First operand has 95 states, 93 states have (on average 1.4946236559139785) internal successors, (139), 94 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:19,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:19,455 INFO L93 Difference]: Finished difference Result 361 states and 539 transitions. [2022-11-02 21:12:19,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:12:19,463 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-02 21:12:19,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:19,474 INFO L225 Difference]: With dead ends: 361 [2022-11-02 21:12:19,474 INFO L226 Difference]: Without dead ends: 268 [2022-11-02 21:12:19,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:12:19,481 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 385 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:19,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [385 Valid, 511 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:12:19,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2022-11-02 21:12:19,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 93. [2022-11-02 21:12:19,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.4673913043478262) internal successors, (135), 92 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:19,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 135 transitions. [2022-11-02 21:12:19,527 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 135 transitions. Word has length 11 [2022-11-02 21:12:19,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:19,527 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 135 transitions. [2022-11-02 21:12:19,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:19,528 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 135 transitions. [2022-11-02 21:12:19,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 21:12:19,529 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:19,529 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:19,546 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-11-02 21:12:19,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:12:19,742 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:19,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:19,743 INFO L85 PathProgramCache]: Analyzing trace with hash 2011974963, now seen corresponding path program 1 times [2022-11-02 21:12:19,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:12:19,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [341103357] [2022-11-02 21:12:19,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:19,745 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:12:19,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:12:19,746 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:12:19,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-02 21:12:20,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:20,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:12:20,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:12:20,299 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 21:12:20,299 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:12:20,300 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:12:20,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [341103357] [2022-11-02 21:12:20,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [341103357] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:20,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:12:20,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:12:20,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140876910] [2022-11-02 21:12:20,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:20,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:12:20,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:12:20,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:12:20,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:12:20,310 INFO L87 Difference]: Start difference. First operand 93 states and 135 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:20,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:20,594 INFO L93 Difference]: Finished difference Result 357 states and 523 transitions. [2022-11-02 21:12:20,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:12:20,596 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-02 21:12:20,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:20,598 INFO L225 Difference]: With dead ends: 357 [2022-11-02 21:12:20,598 INFO L226 Difference]: Without dead ends: 268 [2022-11-02 21:12:20,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:12:20,600 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 379 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:20,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 510 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:12:20,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2022-11-02 21:12:20,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 95. [2022-11-02 21:12:20,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.4574468085106382) internal successors, (137), 94 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:20,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 137 transitions. [2022-11-02 21:12:20,610 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 137 transitions. Word has length 11 [2022-11-02 21:12:20,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:20,611 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 137 transitions. [2022-11-02 21:12:20,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:20,611 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 137 transitions. [2022-11-02 21:12:20,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 21:12:20,612 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:20,612 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:20,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-02 21:12:20,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:12:20,825 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:20,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:20,825 INFO L85 PathProgramCache]: Analyzing trace with hash 2069233265, now seen corresponding path program 1 times [2022-11-02 21:12:20,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:12:20,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1715996426] [2022-11-02 21:12:20,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:20,826 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:12:20,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:12:20,829 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:12:20,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-02 21:12:21,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:21,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:12:21,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:12:21,363 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 21:12:21,363 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:12:21,364 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:12:21,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1715996426] [2022-11-02 21:12:21,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1715996426] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:21,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:12:21,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:12:21,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617826592] [2022-11-02 21:12:21,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:21,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:12:21,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:12:21,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:12:21,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:12:21,367 INFO L87 Difference]: Start difference. First operand 95 states and 137 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:21,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:21,586 INFO L93 Difference]: Finished difference Result 357 states and 522 transitions. [2022-11-02 21:12:21,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:12:21,590 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-02 21:12:21,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:21,591 INFO L225 Difference]: With dead ends: 357 [2022-11-02 21:12:21,592 INFO L226 Difference]: Without dead ends: 268 [2022-11-02 21:12:21,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:12:21,594 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 373 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:21,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [373 Valid, 512 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:12:21,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2022-11-02 21:12:21,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 97. [2022-11-02 21:12:21,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.4479166666666667) internal successors, (139), 96 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:21,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 139 transitions. [2022-11-02 21:12:21,602 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 139 transitions. Word has length 11 [2022-11-02 21:12:21,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:21,603 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 139 transitions. [2022-11-02 21:12:21,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:21,603 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 139 transitions. [2022-11-02 21:12:21,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 21:12:21,604 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:21,604 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:21,626 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-02 21:12:21,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:12:21,822 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:21,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:21,822 INFO L85 PathProgramCache]: Analyzing trace with hash 2069292847, now seen corresponding path program 1 times [2022-11-02 21:12:21,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:12:21,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [712731827] [2022-11-02 21:12:21,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:21,823 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:12:21,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:12:21,825 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:12:21,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-02 21:12:22,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:22,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-02 21:12:22,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:12:22,600 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 21:12:22,600 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:12:22,600 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:12:22,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [712731827] [2022-11-02 21:12:22,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [712731827] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:22,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:12:22,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 21:12:22,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804594185] [2022-11-02 21:12:22,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:22,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 21:12:22,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:12:22,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 21:12:22,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:12:22,606 INFO L87 Difference]: Start difference. First operand 97 states and 139 transitions. Second operand has 10 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:24,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:24,081 INFO L93 Difference]: Finished difference Result 381 states and 553 transitions. [2022-11-02 21:12:24,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-02 21:12:24,083 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-02 21:12:24,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:24,084 INFO L225 Difference]: With dead ends: 381 [2022-11-02 21:12:24,084 INFO L226 Difference]: Without dead ends: 379 [2022-11-02 21:12:24,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=177, Invalid=473, Unknown=0, NotChecked=0, Total=650 [2022-11-02 21:12:24,085 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 1022 mSDsluCounter, 1075 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1022 SdHoareTripleChecker+Valid, 1203 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:24,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1022 Valid, 1203 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-02 21:12:24,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2022-11-02 21:12:24,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 103. [2022-11-02 21:12:24,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 1.4411764705882353) internal successors, (147), 102 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:24,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 147 transitions. [2022-11-02 21:12:24,094 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 147 transitions. Word has length 11 [2022-11-02 21:12:24,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:24,094 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 147 transitions. [2022-11-02 21:12:24,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:24,095 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 147 transitions. [2022-11-02 21:12:24,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:12:24,097 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:24,097 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:24,115 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-02 21:12:24,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:12:24,309 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:24,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:24,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1639282231, now seen corresponding path program 1 times [2022-11-02 21:12:24,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:12:24,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [584391807] [2022-11-02 21:12:24,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:24,314 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:12:24,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:12:24,315 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:12:24,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-02 21:12:25,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:25,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 2146 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 21:12:25,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:12:25,636 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:25,636 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:12:25,637 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:12:25,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [584391807] [2022-11-02 21:12:25,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [584391807] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:25,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:12:25,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:12:25,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468286183] [2022-11-02 21:12:25,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:25,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:12:25,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:12:25,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:12:25,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:12:25,642 INFO L87 Difference]: Start difference. First operand 103 states and 147 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:26,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:26,180 INFO L93 Difference]: Finished difference Result 390 states and 565 transitions. [2022-11-02 21:12:26,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:12:26,182 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-02 21:12:26,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:26,184 INFO L225 Difference]: With dead ends: 390 [2022-11-02 21:12:26,184 INFO L226 Difference]: Without dead ends: 295 [2022-11-02 21:12:26,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:12:26,185 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 497 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 497 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:26,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [497 Valid, 681 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 21:12:26,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2022-11-02 21:12:26,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 109. [2022-11-02 21:12:26,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.4259259259259258) internal successors, (154), 108 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:26,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 154 transitions. [2022-11-02 21:12:26,193 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 154 transitions. Word has length 98 [2022-11-02 21:12:26,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:26,193 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 154 transitions. [2022-11-02 21:12:26,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:26,194 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 154 transitions. [2022-11-02 21:12:26,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:12:26,195 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:26,195 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:26,223 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-02 21:12:26,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:12:26,409 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:26,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:26,410 INFO L85 PathProgramCache]: Analyzing trace with hash -779202247, now seen corresponding path program 1 times [2022-11-02 21:12:26,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:12:26,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2002718189] [2022-11-02 21:12:26,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:26,412 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:12:26,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:12:26,413 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:12:26,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-02 21:12:27,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:27,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 2146 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 21:12:27,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:12:27,665 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:27,666 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:12:27,666 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:12:27,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2002718189] [2022-11-02 21:12:27,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2002718189] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:27,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:12:27,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:12:27,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200889856] [2022-11-02 21:12:27,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:27,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:12:27,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:12:27,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:12:27,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:12:27,669 INFO L87 Difference]: Start difference. First operand 109 states and 154 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:28,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:28,200 INFO L93 Difference]: Finished difference Result 390 states and 564 transitions. [2022-11-02 21:12:28,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:12:28,203 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-02 21:12:28,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:28,204 INFO L225 Difference]: With dead ends: 390 [2022-11-02 21:12:28,204 INFO L226 Difference]: Without dead ends: 295 [2022-11-02 21:12:28,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:12:28,205 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 480 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:28,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [480 Valid, 671 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 21:12:28,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2022-11-02 21:12:28,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 115. [2022-11-02 21:12:28,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.4210526315789473) internal successors, (162), 114 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:28,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 162 transitions. [2022-11-02 21:12:28,213 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 162 transitions. Word has length 98 [2022-11-02 21:12:28,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:28,213 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 162 transitions. [2022-11-02 21:12:28,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:28,214 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 162 transitions. [2022-11-02 21:12:28,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:12:28,215 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:28,215 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:28,241 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-02 21:12:28,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:12:28,429 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:28,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:28,430 INFO L85 PathProgramCache]: Analyzing trace with hash -538962501, now seen corresponding path program 1 times [2022-11-02 21:12:28,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:12:28,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1477306425] [2022-11-02 21:12:28,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:28,432 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:12:28,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:12:28,433 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:12:28,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-02 21:12:29,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:29,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 2146 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 21:12:29,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:12:29,686 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:29,686 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:12:29,687 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:12:29,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1477306425] [2022-11-02 21:12:29,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1477306425] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:29,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:12:29,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:12:29,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73270726] [2022-11-02 21:12:29,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:29,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:12:29,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:12:29,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:12:29,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:12:29,690 INFO L87 Difference]: Start difference. First operand 115 states and 162 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:30,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:30,279 INFO L93 Difference]: Finished difference Result 390 states and 563 transitions. [2022-11-02 21:12:30,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:12:30,280 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-02 21:12:30,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:30,281 INFO L225 Difference]: With dead ends: 390 [2022-11-02 21:12:30,281 INFO L226 Difference]: Without dead ends: 295 [2022-11-02 21:12:30,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:12:30,282 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 467 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 467 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:30,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [467 Valid, 668 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 21:12:30,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2022-11-02 21:12:30,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 119. [2022-11-02 21:12:30,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.4152542372881356) internal successors, (167), 118 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:30,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 167 transitions. [2022-11-02 21:12:30,313 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 167 transitions. Word has length 98 [2022-11-02 21:12:30,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:30,313 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 167 transitions. [2022-11-02 21:12:30,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:30,314 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 167 transitions. [2022-11-02 21:12:30,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:12:30,315 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:30,316 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:30,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-02 21:12:30,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:12:30,517 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:30,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:30,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1195141949, now seen corresponding path program 1 times [2022-11-02 21:12:30,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:12:30,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1718228162] [2022-11-02 21:12:30,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:30,520 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:12:30,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:12:30,521 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:12:30,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-02 21:12:31,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:31,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 2146 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 21:12:31,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:12:31,872 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:31,873 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:12:31,873 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:12:31,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1718228162] [2022-11-02 21:12:31,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1718228162] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:31,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:12:31,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:12:31,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847082050] [2022-11-02 21:12:31,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:31,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:12:31,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:12:31,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:12:31,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:12:31,876 INFO L87 Difference]: Start difference. First operand 119 states and 167 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:32,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:32,496 INFO L93 Difference]: Finished difference Result 402 states and 580 transitions. [2022-11-02 21:12:32,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:12:32,497 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-02 21:12:32,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:32,501 INFO L225 Difference]: With dead ends: 402 [2022-11-02 21:12:32,502 INFO L226 Difference]: Without dead ends: 307 [2022-11-02 21:12:32,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-02 21:12:32,505 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 600 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 600 SdHoareTripleChecker+Valid, 909 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:32,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [600 Valid, 909 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 21:12:32,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2022-11-02 21:12:32,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 123. [2022-11-02 21:12:32,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 1.4098360655737705) internal successors, (172), 122 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:32,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 172 transitions. [2022-11-02 21:12:32,520 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 172 transitions. Word has length 98 [2022-11-02 21:12:32,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:32,520 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 172 transitions. [2022-11-02 21:12:32,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:32,521 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 172 transitions. [2022-11-02 21:12:32,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:12:32,524 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:32,524 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:32,543 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-11-02 21:12:32,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:12:32,729 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:32,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:32,730 INFO L85 PathProgramCache]: Analyzing trace with hash 227791295, now seen corresponding path program 1 times [2022-11-02 21:12:32,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:12:32,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1980916992] [2022-11-02 21:12:32,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:32,732 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:12:32,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:12:32,734 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:12:32,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-02 21:12:33,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:33,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 2146 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 21:12:33,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:12:34,061 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:34,061 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:12:34,061 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:12:34,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1980916992] [2022-11-02 21:12:34,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1980916992] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:34,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:12:34,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:12:34,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337994999] [2022-11-02 21:12:34,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:34,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:12:34,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:12:34,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:12:34,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:12:34,065 INFO L87 Difference]: Start difference. First operand 123 states and 172 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:34,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:34,723 INFO L93 Difference]: Finished difference Result 402 states and 579 transitions. [2022-11-02 21:12:34,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:12:34,724 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-02 21:12:34,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:34,725 INFO L225 Difference]: With dead ends: 402 [2022-11-02 21:12:34,726 INFO L226 Difference]: Without dead ends: 307 [2022-11-02 21:12:34,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-02 21:12:34,727 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 582 mSDsluCounter, 745 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 582 SdHoareTripleChecker+Valid, 890 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:34,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [582 Valid, 890 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 21:12:34,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2022-11-02 21:12:34,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 129. [2022-11-02 21:12:34,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 128 states have (on average 1.40625) internal successors, (180), 128 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:34,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 180 transitions. [2022-11-02 21:12:34,734 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 180 transitions. Word has length 98 [2022-11-02 21:12:34,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:34,735 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 180 transitions. [2022-11-02 21:12:34,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:34,735 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 180 transitions. [2022-11-02 21:12:34,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:12:34,736 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:34,736 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:34,765 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-02 21:12:34,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:12:34,960 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:34,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:34,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1458388543, now seen corresponding path program 1 times [2022-11-02 21:12:34,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:12:34,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1137026004] [2022-11-02 21:12:34,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:34,963 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:12:34,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:12:34,964 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:12:34,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-02 21:12:35,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:35,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 2146 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 21:12:35,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:12:36,172 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:36,172 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:12:36,172 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:12:36,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1137026004] [2022-11-02 21:12:36,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1137026004] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:36,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:12:36,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:12:36,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502435873] [2022-11-02 21:12:36,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:36,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:12:36,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:12:36,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:12:36,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:12:36,175 INFO L87 Difference]: Start difference. First operand 129 states and 180 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:36,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:36,734 INFO L93 Difference]: Finished difference Result 390 states and 560 transitions. [2022-11-02 21:12:36,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:12:36,735 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-02 21:12:36,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:36,736 INFO L225 Difference]: With dead ends: 390 [2022-11-02 21:12:36,736 INFO L226 Difference]: Without dead ends: 295 [2022-11-02 21:12:36,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:12:36,737 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 431 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:36,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [431 Valid, 658 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 21:12:36,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2022-11-02 21:12:36,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 131. [2022-11-02 21:12:36,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 1.4) internal successors, (182), 130 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:36,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 182 transitions. [2022-11-02 21:12:36,744 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 182 transitions. Word has length 98 [2022-11-02 21:12:36,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:36,745 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 182 transitions. [2022-11-02 21:12:36,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:36,745 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 182 transitions. [2022-11-02 21:12:36,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:12:36,746 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:36,746 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:36,771 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-02 21:12:36,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:12:36,969 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:36,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:36,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1875785149, now seen corresponding path program 1 times [2022-11-02 21:12:36,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:12:36,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [190508451] [2022-11-02 21:12:36,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:36,972 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:12:36,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:12:36,973 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:12:36,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-02 21:12:37,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:37,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 2146 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 21:12:37,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:12:38,300 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:38,300 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:12:38,301 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:12:38,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [190508451] [2022-11-02 21:12:38,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [190508451] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:38,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:12:38,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:12:38,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340203533] [2022-11-02 21:12:38,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:38,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:12:38,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:12:38,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:12:38,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:12:38,302 INFO L87 Difference]: Start difference. First operand 131 states and 182 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:38,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:38,875 INFO L93 Difference]: Finished difference Result 414 states and 595 transitions. [2022-11-02 21:12:38,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:12:38,876 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-02 21:12:38,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:38,877 INFO L225 Difference]: With dead ends: 414 [2022-11-02 21:12:38,877 INFO L226 Difference]: Without dead ends: 319 [2022-11-02 21:12:38,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-02 21:12:38,879 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 587 mSDsluCounter, 752 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 587 SdHoareTripleChecker+Valid, 903 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:38,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [587 Valid, 903 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 21:12:38,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2022-11-02 21:12:38,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 133. [2022-11-02 21:12:38,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.393939393939394) internal successors, (184), 132 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:38,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 184 transitions. [2022-11-02 21:12:38,885 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 184 transitions. Word has length 98 [2022-11-02 21:12:38,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:38,886 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 184 transitions. [2022-11-02 21:12:38,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:38,886 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 184 transitions. [2022-11-02 21:12:38,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:12:38,887 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:38,887 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:38,905 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-02 21:12:39,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:12:39,089 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:39,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:39,090 INFO L85 PathProgramCache]: Analyzing trace with hash 85789509, now seen corresponding path program 1 times [2022-11-02 21:12:39,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:12:39,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1229206295] [2022-11-02 21:12:39,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:39,092 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:12:39,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:12:39,093 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:12:39,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-02 21:12:39,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:39,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 2146 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 21:12:39,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:12:40,310 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:40,310 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:12:40,310 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:12:40,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1229206295] [2022-11-02 21:12:40,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1229206295] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:40,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:12:40,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:12:40,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665942386] [2022-11-02 21:12:40,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:40,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:12:40,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:12:40,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:12:40,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:12:40,312 INFO L87 Difference]: Start difference. First operand 133 states and 184 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:40,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:40,842 INFO L93 Difference]: Finished difference Result 414 states and 594 transitions. [2022-11-02 21:12:40,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:12:40,843 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-02 21:12:40,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:40,844 INFO L225 Difference]: With dead ends: 414 [2022-11-02 21:12:40,844 INFO L226 Difference]: Without dead ends: 319 [2022-11-02 21:12:40,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-02 21:12:40,845 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 574 mSDsluCounter, 734 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 890 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:40,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [574 Valid, 890 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:12:40,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2022-11-02 21:12:40,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 137. [2022-11-02 21:12:40,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 136 states have (on average 1.3897058823529411) internal successors, (189), 136 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:40,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 189 transitions. [2022-11-02 21:12:40,853 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 189 transitions. Word has length 98 [2022-11-02 21:12:40,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:40,853 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 189 transitions. [2022-11-02 21:12:40,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:40,854 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 189 transitions. [2022-11-02 21:12:40,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:12:40,854 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:40,855 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:40,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-02 21:12:41,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:12:41,069 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:41,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:41,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1346706759, now seen corresponding path program 1 times [2022-11-02 21:12:41,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:12:41,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1637049494] [2022-11-02 21:12:41,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:41,071 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:12:41,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:12:41,072 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:12:41,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-02 21:12:41,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:41,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 2146 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 21:12:41,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:12:42,350 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:42,350 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:12:42,351 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:12:42,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1637049494] [2022-11-02 21:12:42,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1637049494] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:42,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:12:42,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:12:42,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504679530] [2022-11-02 21:12:42,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:42,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:12:42,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:12:42,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:12:42,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:12:42,353 INFO L87 Difference]: Start difference. First operand 137 states and 189 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:42,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:42,647 INFO L93 Difference]: Finished difference Result 373 states and 535 transitions. [2022-11-02 21:12:42,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:12:42,649 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-02 21:12:42,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:42,650 INFO L225 Difference]: With dead ends: 373 [2022-11-02 21:12:42,650 INFO L226 Difference]: Without dead ends: 278 [2022-11-02 21:12:42,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:12:42,651 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 187 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:42,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 478 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:12:42,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2022-11-02 21:12:42,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 173. [2022-11-02 21:12:42,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 172 states have (on average 1.4069767441860466) internal successors, (242), 172 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:42,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 242 transitions. [2022-11-02 21:12:42,661 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 242 transitions. Word has length 98 [2022-11-02 21:12:42,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:42,661 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 242 transitions. [2022-11-02 21:12:42,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:42,662 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 242 transitions. [2022-11-02 21:12:42,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:12:42,663 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:42,663 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:42,683 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-02 21:12:42,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:12:42,869 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:42,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:42,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1769408585, now seen corresponding path program 1 times [2022-11-02 21:12:42,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:12:42,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [354100910] [2022-11-02 21:12:42,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:42,871 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:12:42,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:12:42,872 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:12:42,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-02 21:12:43,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:43,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 2146 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 21:12:43,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:12:44,137 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:44,138 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:12:44,138 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:12:44,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [354100910] [2022-11-02 21:12:44,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [354100910] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:44,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:12:44,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:12:44,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228728775] [2022-11-02 21:12:44,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:44,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:12:44,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:12:44,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:12:44,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:12:44,140 INFO L87 Difference]: Start difference. First operand 173 states and 242 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:44,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:44,445 INFO L93 Difference]: Finished difference Result 373 states and 534 transitions. [2022-11-02 21:12:44,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:12:44,447 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-02 21:12:44,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:44,448 INFO L225 Difference]: With dead ends: 373 [2022-11-02 21:12:44,448 INFO L226 Difference]: Without dead ends: 278 [2022-11-02 21:12:44,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:12:44,449 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 176 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:44,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 477 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:12:44,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2022-11-02 21:12:44,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 177. [2022-11-02 21:12:44,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 176 states have (on average 1.4034090909090908) internal successors, (247), 176 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:44,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 247 transitions. [2022-11-02 21:12:44,457 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 247 transitions. Word has length 98 [2022-11-02 21:12:44,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:44,457 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 247 transitions. [2022-11-02 21:12:44,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:44,458 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 247 transitions. [2022-11-02 21:12:44,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:12:44,459 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:44,459 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:44,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-02 21:12:44,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:12:44,673 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:44,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:44,673 INFO L85 PathProgramCache]: Analyzing trace with hash 181060683, now seen corresponding path program 1 times [2022-11-02 21:12:44,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:12:44,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [320366847] [2022-11-02 21:12:44,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:44,675 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:12:44,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:12:44,676 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:12:44,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-02 21:12:45,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:45,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 2146 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 21:12:45,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:12:46,514 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:46,514 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:12:47,331 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:47,331 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:12:47,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [320366847] [2022-11-02 21:12:47,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [320366847] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:12:47,332 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:12:47,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-02 21:12:47,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037691682] [2022-11-02 21:12:47,334 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:12:47,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-02 21:12:47,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:12:47,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-02 21:12:47,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:12:47,337 INFO L87 Difference]: Start difference. First operand 177 states and 247 transitions. Second operand has 16 states, 16 states have (on average 11.75) internal successors, (188), 16 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:47,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:47,592 INFO L93 Difference]: Finished difference Result 386 states and 551 transitions. [2022-11-02 21:12:47,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:12:47,593 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 11.75) internal successors, (188), 16 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-02 21:12:47,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:47,594 INFO L225 Difference]: With dead ends: 386 [2022-11-02 21:12:47,594 INFO L226 Difference]: Without dead ends: 291 [2022-11-02 21:12:47,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 180 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2022-11-02 21:12:47,596 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 325 mSDsluCounter, 1256 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 1476 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 60 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:47,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 1476 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 60 Unchecked, 0.2s Time] [2022-11-02 21:12:47,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2022-11-02 21:12:47,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 212. [2022-11-02 21:12:47,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 211 states have (on average 1.4028436018957346) internal successors, (296), 211 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:47,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 296 transitions. [2022-11-02 21:12:47,606 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 296 transitions. Word has length 98 [2022-11-02 21:12:47,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:47,606 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 296 transitions. [2022-11-02 21:12:47,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.75) internal successors, (188), 16 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:47,607 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 296 transitions. [2022-11-02 21:12:47,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:12:47,608 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:47,608 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:47,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-02 21:12:47,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:12:47,813 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:47,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:47,813 INFO L85 PathProgramCache]: Analyzing trace with hash -628285943, now seen corresponding path program 1 times [2022-11-02 21:12:47,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:12:47,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [653259250] [2022-11-02 21:12:47,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:47,815 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:12:47,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:12:47,816 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:12:47,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-02 21:12:48,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:48,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 2146 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 21:12:48,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:12:49,526 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:49,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:12:50,273 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:50,273 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:12:50,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [653259250] [2022-11-02 21:12:50,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [653259250] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:12:50,274 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:12:50,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-02 21:12:50,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891513652] [2022-11-02 21:12:50,274 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:12:50,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-02 21:12:50,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:12:50,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-02 21:12:50,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:12:50,275 INFO L87 Difference]: Start difference. First operand 212 states and 296 transitions. Second operand has 16 states, 16 states have (on average 11.875) internal successors, (190), 16 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:50,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:50,602 INFO L93 Difference]: Finished difference Result 446 states and 635 transitions. [2022-11-02 21:12:50,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:12:50,603 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 11.875) internal successors, (190), 16 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-02 21:12:50,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:50,605 INFO L225 Difference]: With dead ends: 446 [2022-11-02 21:12:50,605 INFO L226 Difference]: Without dead ends: 351 [2022-11-02 21:12:50,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 180 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2022-11-02 21:12:50,606 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 308 mSDsluCounter, 1361 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 1581 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 65 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:50,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 1581 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 65 Unchecked, 0.2s Time] [2022-11-02 21:12:50,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2022-11-02 21:12:50,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 278. [2022-11-02 21:12:50,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 277 states have (on average 1.3971119133574008) internal successors, (387), 277 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:50,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 387 transitions. [2022-11-02 21:12:50,621 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 387 transitions. Word has length 98 [2022-11-02 21:12:50,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:50,621 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 387 transitions. [2022-11-02 21:12:50,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.875) internal successors, (190), 16 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:50,622 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 387 transitions. [2022-11-02 21:12:50,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:12:50,623 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:50,623 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:50,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-02 21:12:50,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:12:50,836 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:50,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:50,837 INFO L85 PathProgramCache]: Analyzing trace with hash -571027641, now seen corresponding path program 1 times [2022-11-02 21:12:50,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:12:50,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1492567047] [2022-11-02 21:12:50,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:50,839 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:12:50,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:12:50,839 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:12:50,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-02 21:12:51,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:51,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 2146 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 21:12:51,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:12:52,661 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:52,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:12:53,402 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:53,402 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:12:53,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1492567047] [2022-11-02 21:12:53,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1492567047] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:12:53,403 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:12:53,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-02 21:12:53,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25179911] [2022-11-02 21:12:53,403 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:12:53,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-02 21:12:53,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:12:53,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-02 21:12:53,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:12:53,405 INFO L87 Difference]: Start difference. First operand 278 states and 387 transitions. Second operand has 16 states, 16 states have (on average 12.0) internal successors, (192), 16 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:53,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:53,735 INFO L93 Difference]: Finished difference Result 564 states and 796 transitions. [2022-11-02 21:12:53,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:12:53,736 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 12.0) internal successors, (192), 16 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-02 21:12:53,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:53,739 INFO L225 Difference]: With dead ends: 564 [2022-11-02 21:12:53,739 INFO L226 Difference]: Without dead ends: 469 [2022-11-02 21:12:53,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 180 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2022-11-02 21:12:53,740 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 355 mSDsluCounter, 1077 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 1299 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 73 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:53,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 1299 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 73 Unchecked, 0.2s Time] [2022-11-02 21:12:53,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2022-11-02 21:12:53,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 398. [2022-11-02 21:12:53,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 397 states have (on average 1.3879093198992443) internal successors, (551), 397 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:53,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 551 transitions. [2022-11-02 21:12:53,763 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 551 transitions. Word has length 98 [2022-11-02 21:12:53,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:53,764 INFO L495 AbstractCegarLoop]: Abstraction has 398 states and 551 transitions. [2022-11-02 21:12:53,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 12.0) internal successors, (192), 16 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:53,764 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 551 transitions. [2022-11-02 21:12:53,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:12:53,766 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:53,766 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:53,791 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-02 21:12:53,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:12:53,981 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:53,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:53,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1415033143, now seen corresponding path program 1 times [2022-11-02 21:12:53,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:12:53,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [117295897] [2022-11-02 21:12:53,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:53,983 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:12:53,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:12:53,984 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:12:53,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-02 21:12:54,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:54,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 2146 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-02 21:12:54,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:12:56,285 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:12:56,286 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:12:59,696 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:12:59,696 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:12:59,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [117295897] [2022-11-02 21:12:59,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [117295897] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:12:59,697 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:12:59,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-02 21:12:59,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042985592] [2022-11-02 21:12:59,697 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:12:59,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 21:12:59,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:12:59,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 21:12:59,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:12:59,699 INFO L87 Difference]: Start difference. First operand 398 states and 551 transitions. Second operand has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:13:01,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:13:01,560 INFO L93 Difference]: Finished difference Result 590 states and 831 transitions. [2022-11-02 21:13:01,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-02 21:13:01,562 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-02 21:13:01,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:13:01,564 INFO L225 Difference]: With dead ends: 590 [2022-11-02 21:13:01,564 INFO L226 Difference]: Without dead ends: 588 [2022-11-02 21:13:01,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=329, Invalid=1077, Unknown=0, NotChecked=0, Total=1406 [2022-11-02 21:13:01,565 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 777 mSDsluCounter, 1744 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 777 SdHoareTripleChecker+Valid, 1979 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 285 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 21:13:01,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [777 Valid, 1979 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 226 Invalid, 0 Unknown, 285 Unchecked, 0.9s Time] [2022-11-02 21:13:01,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2022-11-02 21:13:01,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 398. [2022-11-02 21:13:01,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 397 states have (on average 1.3879093198992443) internal successors, (551), 397 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:13:01,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 551 transitions. [2022-11-02 21:13:01,590 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 551 transitions. Word has length 98 [2022-11-02 21:13:01,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:13:01,590 INFO L495 AbstractCegarLoop]: Abstraction has 398 states and 551 transitions. [2022-11-02 21:13:01,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:13:01,591 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 551 transitions. [2022-11-02 21:13:01,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:13:01,592 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:13:01,592 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:13:01,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-02 21:13:01,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:13:01,805 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:13:01,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:13:01,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1821373769, now seen corresponding path program 1 times [2022-11-02 21:13:01,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:13:01,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1062879325] [2022-11-02 21:13:01,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:13:01,807 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:13:01,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:13:01,808 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:13:01,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-02 21:13:02,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:13:02,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 2146 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-02 21:13:02,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:13:03,988 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:13:03,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:13:07,204 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:13:07,204 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:13:07,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1062879325] [2022-11-02 21:13:07,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1062879325] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:13:07,204 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:13:07,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-02 21:13:07,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072972918] [2022-11-02 21:13:07,205 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:13:07,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 21:13:07,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:13:07,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 21:13:07,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:13:07,207 INFO L87 Difference]: Start difference. First operand 398 states and 551 transitions. Second operand has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:13:08,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:13:08,632 INFO L93 Difference]: Finished difference Result 585 states and 823 transitions. [2022-11-02 21:13:08,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 21:13:08,633 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-02 21:13:08,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:13:08,636 INFO L225 Difference]: With dead ends: 585 [2022-11-02 21:13:08,636 INFO L226 Difference]: Without dead ends: 583 [2022-11-02 21:13:08,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=231, Invalid=761, Unknown=0, NotChecked=0, Total=992 [2022-11-02 21:13:08,637 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 890 mSDsluCounter, 1618 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 890 SdHoareTripleChecker+Valid, 1853 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 255 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 21:13:08,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [890 Valid, 1853 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 192 Invalid, 0 Unknown, 255 Unchecked, 0.8s Time] [2022-11-02 21:13:08,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2022-11-02 21:13:08,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 400. [2022-11-02 21:13:08,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 399 states have (on average 1.3884711779448622) internal successors, (554), 399 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:13:08,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 554 transitions. [2022-11-02 21:13:08,664 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 554 transitions. Word has length 98 [2022-11-02 21:13:08,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:13:08,664 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 554 transitions. [2022-11-02 21:13:08,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:13:08,665 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 554 transitions. [2022-11-02 21:13:08,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:13:08,666 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:13:08,667 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:13:08,699 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2022-11-02 21:13:08,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:13:08,881 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:13:08,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:13:08,881 INFO L85 PathProgramCache]: Analyzing trace with hash 977308685, now seen corresponding path program 1 times [2022-11-02 21:13:08,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:13:08,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [368581198] [2022-11-02 21:13:08,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:13:08,883 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:13:08,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:13:08,884 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:13:08,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-02 21:13:09,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:13:09,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 2146 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-02 21:13:09,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:13:10,878 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:13:10,878 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:13:16,265 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:13:16,265 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:13:16,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [368581198] [2022-11-02 21:13:16,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [368581198] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:13:16,266 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:13:16,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-11-02 21:13:16,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112196307] [2022-11-02 21:13:16,266 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:13:16,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 21:13:16,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:13:16,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 21:13:16,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=136, Unknown=2, NotChecked=0, Total=182 [2022-11-02 21:13:16,268 INFO L87 Difference]: Start difference. First operand 400 states and 554 transitions. Second operand has 14 states, 14 states have (on average 13.857142857142858) internal successors, (194), 14 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:13:16,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:13:16,342 INFO L93 Difference]: Finished difference Result 749 states and 1044 transitions. [2022-11-02 21:13:16,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:13:16,343 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 13.857142857142858) internal successors, (194), 14 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-02 21:13:16,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:13:16,346 INFO L225 Difference]: With dead ends: 749 [2022-11-02 21:13:16,347 INFO L226 Difference]: Without dead ends: 747 [2022-11-02 21:13:16,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=44, Invalid=136, Unknown=2, NotChecked=0, Total=182 [2022-11-02 21:13:16,348 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 465 mSDsluCounter, 1196 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 1413 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 48 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:13:16,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [465 Valid, 1413 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 48 Unchecked, 0.0s Time] [2022-11-02 21:13:16,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2022-11-02 21:13:16,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 567. [2022-11-02 21:13:16,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 566 states have (on average 1.3975265017667844) internal successors, (791), 566 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:13:16,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 791 transitions. [2022-11-02 21:13:16,389 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 791 transitions. Word has length 98 [2022-11-02 21:13:16,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:13:16,390 INFO L495 AbstractCegarLoop]: Abstraction has 567 states and 791 transitions. [2022-11-02 21:13:16,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 13.857142857142858) internal successors, (194), 14 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:13:16,390 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 791 transitions. [2022-11-02 21:13:16,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:13:16,392 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:13:16,392 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:13:16,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-02 21:13:16,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:13:16,606 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:13:16,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:13:16,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1421209359, now seen corresponding path program 1 times [2022-11-02 21:13:16,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:13:16,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1322594100] [2022-11-02 21:13:16,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:13:16,608 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:13:16,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:13:16,609 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:13:16,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-02 21:13:17,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:13:17,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 2146 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-02 21:13:17,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:13:19,071 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:13:19,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:13:25,110 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:13:25,111 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:13:25,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1322594100] [2022-11-02 21:13:25,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1322594100] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:13:25,113 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:13:25,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-02 21:13:25,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164774214] [2022-11-02 21:13:25,113 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:13:25,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 21:13:25,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:13:25,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 21:13:25,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=230, Unknown=1, NotChecked=0, Total=306 [2022-11-02 21:13:25,117 INFO L87 Difference]: Start difference. First operand 567 states and 791 transitions. Second operand has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:13:25,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:13:25,392 INFO L93 Difference]: Finished difference Result 1107 states and 1554 transitions. [2022-11-02 21:13:25,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 21:13:25,392 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-02 21:13:25,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:13:25,397 INFO L225 Difference]: With dead ends: 1107 [2022-11-02 21:13:25,398 INFO L226 Difference]: Without dead ends: 1105 [2022-11-02 21:13:25,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=91, Invalid=288, Unknown=1, NotChecked=0, Total=380 [2022-11-02 21:13:25,399 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 342 mSDsluCounter, 1453 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 1650 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 33 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:13:25,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 1650 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 33 Unchecked, 0.0s Time] [2022-11-02 21:13:25,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1105 states. [2022-11-02 21:13:25,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1105 to 929. [2022-11-02 21:13:25,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 929 states, 928 states have (on average 1.4073275862068966) internal successors, (1306), 928 states have internal predecessors, (1306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:13:25,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1306 transitions. [2022-11-02 21:13:25,481 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1306 transitions. Word has length 98 [2022-11-02 21:13:25,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:13:25,481 INFO L495 AbstractCegarLoop]: Abstraction has 929 states and 1306 transitions. [2022-11-02 21:13:25,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:13:25,482 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1306 transitions. [2022-11-02 21:13:25,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:13:25,484 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:13:25,484 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:13:25,518 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-02 21:13:25,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:13:25,710 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:13:25,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:13:25,710 INFO L85 PathProgramCache]: Analyzing trace with hash 2080740881, now seen corresponding path program 1 times [2022-11-02 21:13:25,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:13:25,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1321021925] [2022-11-02 21:13:25,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:13:25,712 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:13:25,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:13:25,713 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:13:25,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-02 21:13:26,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:13:26,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 2146 conjuncts, 52 conjunts are in the unsatisfiable core [2022-11-02 21:13:26,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:13:28,236 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:13:28,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:13:41,894 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:13:41,894 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:13:41,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1321021925] [2022-11-02 21:13:41,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1321021925] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:13:41,895 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:13:41,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-02 21:13:41,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13999393] [2022-11-02 21:13:41,895 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:13:41,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 21:13:41,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:13:41,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 21:13:41,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=226, Unknown=5, NotChecked=0, Total=306 [2022-11-02 21:13:41,897 INFO L87 Difference]: Start difference. First operand 929 states and 1306 transitions. Second operand has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:13:42,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:13:42,313 INFO L93 Difference]: Finished difference Result 1748 states and 2460 transitions. [2022-11-02 21:13:42,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 21:13:42,314 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-11-02 21:13:42,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:13:42,318 INFO L225 Difference]: With dead ends: 1748 [2022-11-02 21:13:42,318 INFO L226 Difference]: Without dead ends: 1746 [2022-11-02 21:13:42,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=91, Invalid=284, Unknown=5, NotChecked=0, Total=380 [2022-11-02 21:13:42,320 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 282 mSDsluCounter, 1360 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 1482 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:13:42,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 1482 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 28 Unchecked, 0.0s Time] [2022-11-02 21:13:42,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1746 states. [2022-11-02 21:13:42,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1746 to 1569. [2022-11-02 21:13:42,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1569 states, 1568 states have (on average 1.409438775510204) internal successors, (2210), 1568 states have internal predecessors, (2210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:13:42,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 2210 transitions. [2022-11-02 21:13:42,467 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 2210 transitions. Word has length 98 [2022-11-02 21:13:42,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:13:42,467 INFO L495 AbstractCegarLoop]: Abstraction has 1569 states and 2210 transitions. [2022-11-02 21:13:42,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.777777777777779) internal successors, (194), 18 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:13:42,468 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 2210 transitions. [2022-11-02 21:13:42,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-02 21:13:42,471 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:13:42,472 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:13:42,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-02 21:13:42,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:13:42,691 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:13:42,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:13:42,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1727652499, now seen corresponding path program 1 times [2022-11-02 21:13:42,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:13:42,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [642711909] [2022-11-02 21:13:42,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:13:42,695 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:13:42,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:13:42,696 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:13:42,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f51406aa-4ab5-4d9a-8719-3b29e9c7d88e/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-02 21:13:43,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:13:43,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 2146 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-02 21:13:43,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:13:45,298 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:13:45,298 INFO L328 TraceCheckSpWp]: Computing backward predicates...