./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.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_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/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_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.2.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/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_4ff06a49-6137-46a3-b888-219e2f8652dd/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 14f81a0d6a388b613f6256ef89322a578d67b2b4527606e37681918ec5903dd9 --- 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 21:01:25,774 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:01:25,776 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:01:25,815 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:01:25,816 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:01:25,820 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:01:25,824 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:01:25,827 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:01:25,829 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:01:25,836 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:01:25,837 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:01:25,838 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:01:25,840 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:01:25,842 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:01:25,844 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:01:25,845 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:01:25,847 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:01:25,848 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:01:25,850 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:01:25,856 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:01:25,859 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:01:25,861 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:01:25,864 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:01:25,866 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:01:25,871 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:01:25,872 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:01:25,872 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:01:25,874 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:01:25,874 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:01:25,875 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:01:25,876 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:01:25,878 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:01:25,880 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:01:25,881 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:01:25,882 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:01:25,883 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:01:25,883 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:01:25,884 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:01:25,884 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:01:25,885 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:01:25,886 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:01:25,886 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-02 21:01:25,929 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:01:25,930 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:01:25,930 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:01:25,931 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:01:25,932 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:01:25,932 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:01:25,932 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:01:25,933 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:01:25,933 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:01:25,933 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:01:25,934 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:01:25,935 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:01:25,935 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:01:25,935 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:01:25,935 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:01:25,935 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:01:25,936 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:01:25,936 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:01:25,936 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:01:25,936 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:01:25,936 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:01:25,937 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:01:25,937 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:01:25,937 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:01:25,937 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:01:25,938 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:01:25,938 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 21:01:25,938 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:01:25,938 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:01:25,939 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:01:25,939 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_4ff06a49-6137-46a3-b888-219e2f8652dd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 14f81a0d6a388b613f6256ef89322a578d67b2b4527606e37681918ec5903dd9 [2022-11-02 21:01:26,243 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:01:26,289 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:01:26,292 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:01:26,294 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:01:26,295 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:01:26,296 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.2.prop1-func-interl.c [2022-11-02 21:01:26,372 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/data/fbd2f70f1/7cc379170dc6406b8633a3f5236b6eb3/FLAG00c2390c8 [2022-11-02 21:01:27,067 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:01:27,071 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.2.prop1-func-interl.c [2022-11-02 21:01:27,088 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/data/fbd2f70f1/7cc379170dc6406b8633a3f5236b6eb3/FLAG00c2390c8 [2022-11-02 21:01:27,291 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/data/fbd2f70f1/7cc379170dc6406b8633a3f5236b6eb3 [2022-11-02 21:01:27,293 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:01:27,295 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:01:27,297 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:01:27,297 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:01:27,300 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:01:27,301 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:01:27" (1/1) ... [2022-11-02 21:01:27,303 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cc0332c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:27, skipping insertion in model container [2022-11-02 21:01:27,303 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:01:27" (1/1) ... [2022-11-02 21:01:27,310 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:01:27,360 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:01:27,596 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_4ff06a49-6137-46a3-b888-219e2f8652dd/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.2.prop1-func-interl.c[1014,1027] [2022-11-02 21:01:27,941 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:01:27,948 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:01:27,960 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_4ff06a49-6137-46a3-b888-219e2f8652dd/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.2.prop1-func-interl.c[1014,1027] [2022-11-02 21:01:28,081 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:01:28,093 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:01:28,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:28 WrapperNode [2022-11-02 21:01:28,094 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:01:28,095 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:01:28,095 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:01:28,095 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:01:28,103 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:28" (1/1) ... [2022-11-02 21:01:28,143 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:28" (1/1) ... [2022-11-02 21:01:28,311 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1527 [2022-11-02 21:01:28,311 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:01:28,312 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:01:28,312 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:01:28,312 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:01:28,321 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:28" (1/1) ... [2022-11-02 21:01:28,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:28" (1/1) ... [2022-11-02 21:01:28,358 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:28" (1/1) ... [2022-11-02 21:01:28,359 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:28" (1/1) ... [2022-11-02 21:01:28,426 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:28" (1/1) ... [2022-11-02 21:01:28,447 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:28" (1/1) ... [2022-11-02 21:01:28,467 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:28" (1/1) ... [2022-11-02 21:01:28,484 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:28" (1/1) ... [2022-11-02 21:01:28,581 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:01:28,590 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:01:28,591 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:01:28,591 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:01:28,592 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:28" (1/1) ... [2022-11-02 21:01:28,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:01:28,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:01:28,648 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:01:28,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:01:28,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:01:28,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:01:29,071 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:01:29,073 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:01:48,488 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:01:48,496 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:01:48,496 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 21:01:48,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:01:48 BoogieIcfgContainer [2022-11-02 21:01:48,499 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:01:48,502 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:01:48,502 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:01:48,507 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:01:48,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:01:27" (1/3) ... [2022-11-02 21:01:48,508 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fe40f41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:01:48, skipping insertion in model container [2022-11-02 21:01:48,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:01:28" (2/3) ... [2022-11-02 21:01:48,508 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fe40f41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:01:48, skipping insertion in model container [2022-11-02 21:01:48,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:01:48" (3/3) ... [2022-11-02 21:01:48,510 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.anderson.2.prop1-func-interl.c [2022-11-02 21:01:48,529 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:01:48,529 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 21:01:48,598 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:01:48,607 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;@3260c113, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:01:48,607 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 21:01:48,616 INFO L276 IsEmpty]: Start isEmpty. Operand has 113 states, 111 states have (on average 1.4954954954954955) internal successors, (166), 112 states have internal predecessors, (166), 0 states have call successors, (0), 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 21:01:48,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 21:01:48,627 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:48,627 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:48,628 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:48,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:48,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1473645707, now seen corresponding path program 1 times [2022-11-02 21:01:48,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:48,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569249043] [2022-11-02 21:01:48,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:48,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:48,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:49,458 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 21:01:49,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:49,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569249043] [2022-11-02 21:01:49,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569249043] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:49,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:49,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:01:49,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580094850] [2022-11-02 21:01:49,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:49,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:01:49,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:49,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:01:49,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:01:49,508 INFO L87 Difference]: Start difference. First operand has 113 states, 111 states have (on average 1.4954954954954955) internal successors, (166), 112 states have internal predecessors, (166), 0 states have call successors, (0), 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 21:01:52,514 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 21:01:52,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:52,945 INFO L93 Difference]: Finished difference Result 327 states and 488 transitions. [2022-11-02 21:01:52,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:01:52,950 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 21:01:52,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:52,960 INFO L225 Difference]: With dead ends: 327 [2022-11-02 21:01:52,960 INFO L226 Difference]: Without dead ends: 216 [2022-11-02 21:01:52,963 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 21:01:52,966 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 311 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:52,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [311 Valid, 465 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 3.4s Time] [2022-11-02 21:01:52,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2022-11-02 21:01:53,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 111. [2022-11-02 21:01:53,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 1.4727272727272727) internal successors, (162), 110 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 21:01:53,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 162 transitions. [2022-11-02 21:01:53,010 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 162 transitions. Word has length 11 [2022-11-02 21:01:53,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:53,011 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 162 transitions. [2022-11-02 21:01:53,011 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 21:01:53,012 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 162 transitions. [2022-11-02 21:01:53,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 21:01:53,012 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:53,012 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:53,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 21:01:53,013 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:53,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:53,014 INFO L85 PathProgramCache]: Analyzing trace with hash 2011974963, now seen corresponding path program 1 times [2022-11-02 21:01:53,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:53,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490214512] [2022-11-02 21:01:53,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:53,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:53,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:53,215 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 21:01:53,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:53,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490214512] [2022-11-02 21:01:53,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490214512] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:53,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:53,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:01:53,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203693979] [2022-11-02 21:01:53,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:53,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:01:53,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:53,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:01:53,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:01:53,219 INFO L87 Difference]: Start difference. First operand 111 states and 162 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 21:01:54,994 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 21:01:57,204 WARN L539 Checker$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 21:01:58,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:58,068 INFO L93 Difference]: Finished difference Result 323 states and 475 transitions. [2022-11-02 21:01:58,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:01:58,078 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 21:01:58,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:58,080 INFO L225 Difference]: With dead ends: 323 [2022-11-02 21:01:58,080 INFO L226 Difference]: Without dead ends: 216 [2022-11-02 21:01:58,081 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 21:01:58,082 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 305 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:58,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 465 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2022-11-02 21:01:58,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2022-11-02 21:01:58,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 113. [2022-11-02 21:01:58,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.4642857142857142) internal successors, (164), 112 states have internal predecessors, (164), 0 states have call successors, (0), 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 21:01:58,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 164 transitions. [2022-11-02 21:01:58,094 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 164 transitions. Word has length 11 [2022-11-02 21:01:58,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:58,095 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 164 transitions. [2022-11-02 21:01:58,095 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 21:01:58,095 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 164 transitions. [2022-11-02 21:01:58,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 21:01:58,096 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:58,096 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:58,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 21:01:58,096 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:58,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:58,097 INFO L85 PathProgramCache]: Analyzing trace with hash 2069233265, now seen corresponding path program 1 times [2022-11-02 21:01:58,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:58,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39822317] [2022-11-02 21:01:58,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:58,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:58,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:58,339 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 21:01:58,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:58,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39822317] [2022-11-02 21:01:58,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39822317] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:58,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:58,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:01:58,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801824561] [2022-11-02 21:01:58,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:58,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:01:58,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:58,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:01:58,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:01:58,354 INFO L87 Difference]: Start difference. First operand 113 states and 164 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 21:02:00,966 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-02 21:02:01,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:01,539 INFO L93 Difference]: Finished difference Result 323 states and 474 transitions. [2022-11-02 21:02:01,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:02:01,557 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 21:02:01,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:01,559 INFO L225 Difference]: With dead ends: 323 [2022-11-02 21:02:01,559 INFO L226 Difference]: Without dead ends: 216 [2022-11-02 21:02:01,559 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 21:02:01,560 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 299 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:01,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 467 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 1 Unknown, 0 Unchecked, 3.2s Time] [2022-11-02 21:02:01,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2022-11-02 21:02:01,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 115. [2022-11-02 21:02:01,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.456140350877193) internal successors, (166), 114 states have internal predecessors, (166), 0 states have call successors, (0), 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 21:02:01,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 166 transitions. [2022-11-02 21:02:01,579 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 166 transitions. Word has length 11 [2022-11-02 21:02:01,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:01,580 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 166 transitions. [2022-11-02 21:02:01,580 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 21:02:01,580 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 166 transitions. [2022-11-02 21:02:01,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 21:02:01,581 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:01,581 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:02:01,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 21:02:01,581 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:02:01,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:01,582 INFO L85 PathProgramCache]: Analyzing trace with hash 2069292847, now seen corresponding path program 1 times [2022-11-02 21:02:01,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:02:01,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403866794] [2022-11-02 21:02:01,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:01,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:02:01,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:02:01,677 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 21:02:01,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:02:01,788 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 21:02:01,788 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 21:02:01,789 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-02 21:02:01,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 21:02:01,795 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-11-02 21:02:01,798 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 21:02:01,835 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-02 21:02:01,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 09:02:01 BoogieIcfgContainer [2022-11-02 21:02:01,861 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 21:02:01,862 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 21:02:01,862 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 21:02:01,862 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 21:02:01,863 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:01:48" (3/4) ... [2022-11-02 21:02:01,866 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-02 21:02:01,867 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 21:02:01,867 INFO L158 Benchmark]: Toolchain (without parser) took 34572.26ms. Allocated memory was 119.5MB in the beginning and 748.7MB in the end (delta: 629.1MB). Free memory was 83.2MB in the beginning and 533.5MB in the end (delta: -450.3MB). Peak memory consumption was 177.4MB. Max. memory is 16.1GB. [2022-11-02 21:02:01,869 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 81.8MB. Free memory was 52.9MB in the beginning and 52.9MB in the end (delta: 30.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:02:01,871 INFO L158 Benchmark]: CACSL2BoogieTranslator took 797.52ms. Allocated memory is still 119.5MB. Free memory was 83.0MB in the beginning and 58.1MB in the end (delta: 24.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-11-02 21:02:01,871 INFO L158 Benchmark]: Boogie Procedure Inliner took 216.29ms. Allocated memory is still 119.5MB. Free memory was 58.1MB in the beginning and 67.8MB in the end (delta: -9.7MB). Peak memory consumption was 31.8MB. Max. memory is 16.1GB. [2022-11-02 21:02:01,872 INFO L158 Benchmark]: Boogie Preprocessor took 273.25ms. Allocated memory is still 119.5MB. Free memory was 67.8MB in the beginning and 67.7MB in the end (delta: 88.0kB). Peak memory consumption was 36.0MB. Max. memory is 16.1GB. [2022-11-02 21:02:01,873 INFO L158 Benchmark]: RCFGBuilder took 19908.79ms. Allocated memory was 119.5MB in the beginning and 748.7MB in the end (delta: 629.1MB). Free memory was 67.7MB in the beginning and 369.2MB in the end (delta: -301.5MB). Peak memory consumption was 458.5MB. Max. memory is 16.1GB. [2022-11-02 21:02:01,874 INFO L158 Benchmark]: TraceAbstraction took 13359.34ms. Allocated memory is still 748.7MB. Free memory was 368.1MB in the beginning and 534.6MB in the end (delta: -166.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:02:01,874 INFO L158 Benchmark]: Witness Printer took 4.76ms. Allocated memory is still 748.7MB. Free memory was 534.6MB in the beginning and 533.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:02:01,877 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 81.8MB. Free memory was 52.9MB in the beginning and 52.9MB in the end (delta: 30.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 797.52ms. Allocated memory is still 119.5MB. Free memory was 83.0MB in the beginning and 58.1MB in the end (delta: 24.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 216.29ms. Allocated memory is still 119.5MB. Free memory was 58.1MB in the beginning and 67.8MB in the end (delta: -9.7MB). Peak memory consumption was 31.8MB. Max. memory is 16.1GB. * Boogie Preprocessor took 273.25ms. Allocated memory is still 119.5MB. Free memory was 67.8MB in the beginning and 67.7MB in the end (delta: 88.0kB). Peak memory consumption was 36.0MB. Max. memory is 16.1GB. * RCFGBuilder took 19908.79ms. Allocated memory was 119.5MB in the beginning and 748.7MB in the end (delta: 629.1MB). Free memory was 67.7MB in the beginning and 369.2MB in the end (delta: -301.5MB). Peak memory consumption was 458.5MB. Max. memory is 16.1GB. * TraceAbstraction took 13359.34ms. Allocated memory is still 748.7MB. Free memory was 368.1MB in the beginning and 534.6MB in the end (delta: -166.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.76ms. Allocated memory is still 748.7MB. Free memory was 534.6MB in the beginning and 533.5MB 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 190, overapproximation of bitwiseAnd at line 186. 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_20 = 0; [L39] const SORT_4 var_53 = 1; [L40] const SORT_4 var_54 = 0; [L41] const SORT_2 var_63 = 1; [L42] const SORT_3 var_65 = 0; [L43] const SORT_4 var_68 = 3; [L44] const SORT_2 var_72 = 0; [L45] const SORT_4 var_122 = 2; [L46] const SORT_2 var_125 = 2; [L48] SORT_1 input_64; [L49] SORT_1 input_74; [L50] SORT_1 input_76; [L51] SORT_1 input_83; [L52] SORT_1 input_85; [L53] SORT_1 input_92; [L54] SORT_1 input_143; [L55] SORT_1 input_147; [L56] SORT_1 input_150; [L57] SORT_1 input_151; [L58] SORT_1 input_152; [L59] SORT_1 input_153; [L60] SORT_1 input_161; [L61] SORT_1 input_167; [L62] SORT_1 input_173; [L63] SORT_1 input_188; [L64] SORT_1 input_206; [L65] SORT_1 input_224; [L67] SORT_2 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L68] SORT_2 state_8 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L69] SORT_2 state_10 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L70] SORT_2 state_12 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L71] SORT_2 state_14 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L72] SORT_2 state_16 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L73] SORT_2 state_18 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L74] SORT_1 state_21 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L75] SORT_1 state_23 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L76] SORT_1 state_25 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L77] SORT_1 state_27 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L78] SORT_1 state_29 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L79] SORT_1 state_31 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L80] SORT_1 state_33 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L81] SORT_1 state_35 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L82] SORT_1 state_37 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L83] SORT_1 state_39 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L84] SORT_1 state_41 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L85] SORT_1 state_43 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L86] SORT_1 state_45 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L87] SORT_1 state_47 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L88] SORT_1 state_49 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L89] SORT_1 state_51 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L91] SORT_2 init_7_arg_1 = var_5; [L92] state_6 = init_7_arg_1 [L93] SORT_2 init_9_arg_1 = var_5; [L94] state_8 = init_9_arg_1 [L95] SORT_2 init_11_arg_1 = var_5; [L96] state_10 = init_11_arg_1 [L97] SORT_2 init_13_arg_1 = var_5; [L98] state_12 = init_13_arg_1 [L99] SORT_2 init_15_arg_1 = var_5; [L100] state_14 = init_15_arg_1 [L101] SORT_2 init_17_arg_1 = var_5; [L102] state_16 = init_17_arg_1 [L103] SORT_2 init_19_arg_1 = var_5; [L104] state_18 = init_19_arg_1 [L105] SORT_1 init_22_arg_1 = var_20; [L106] state_21 = init_22_arg_1 [L107] SORT_1 init_24_arg_1 = var_20; [L108] state_23 = init_24_arg_1 [L109] SORT_1 init_26_arg_1 = var_20; [L110] state_25 = init_26_arg_1 [L111] SORT_1 init_28_arg_1 = var_20; [L112] state_27 = init_28_arg_1 [L113] SORT_1 init_30_arg_1 = var_20; [L114] state_29 = init_30_arg_1 [L115] SORT_1 init_32_arg_1 = var_20; [L116] state_31 = init_32_arg_1 [L117] SORT_1 init_34_arg_1 = var_20; [L118] state_33 = init_34_arg_1 [L119] SORT_1 init_36_arg_1 = var_20; [L120] state_35 = init_36_arg_1 [L121] SORT_1 init_38_arg_1 = var_20; [L122] state_37 = init_38_arg_1 [L123] SORT_1 init_40_arg_1 = var_20; [L124] state_39 = init_40_arg_1 [L125] SORT_1 init_42_arg_1 = var_20; [L126] state_41 = init_42_arg_1 [L127] SORT_1 init_44_arg_1 = var_20; [L128] state_43 = init_44_arg_1 [L129] SORT_1 init_46_arg_1 = var_20; [L130] state_45 = init_46_arg_1 [L131] SORT_1 init_48_arg_1 = var_20; [L132] state_47 = init_48_arg_1 [L133] SORT_1 init_50_arg_1 = var_20; [L134] state_49 = init_50_arg_1 [L135] SORT_1 init_52_arg_1 = var_20; [L136] state_51 = init_52_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_22_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_7_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_21=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_6=0, state_8=0, var_122=2, var_125=2, var_20=0, var_5=0, var_53=1, var_54=0, var_63=1, var_65=0, var_68=3, var_72=0] [L139] input_64 = __VERIFIER_nondet_uchar() [L140] input_74 = __VERIFIER_nondet_uchar() [L141] input_76 = __VERIFIER_nondet_uchar() [L142] input_83 = __VERIFIER_nondet_uchar() [L143] input_85 = __VERIFIER_nondet_uchar() [L144] input_92 = __VERIFIER_nondet_uchar() [L145] input_143 = __VERIFIER_nondet_uchar() [L146] input_143 = input_143 & mask_SORT_1 [L147] input_147 = __VERIFIER_nondet_uchar() [L148] input_147 = input_147 & mask_SORT_1 [L149] input_150 = __VERIFIER_nondet_uchar() [L150] input_150 = input_150 & mask_SORT_1 [L151] input_151 = __VERIFIER_nondet_uchar() [L152] input_151 = input_151 & mask_SORT_1 [L153] input_152 = __VERIFIER_nondet_uchar() [L154] input_152 = input_152 & mask_SORT_1 [L155] input_153 = __VERIFIER_nondet_uchar() [L156] input_153 = input_153 & mask_SORT_1 [L157] input_161 = __VERIFIER_nondet_uchar() [L158] input_161 = input_161 & mask_SORT_1 [L159] input_167 = __VERIFIER_nondet_uchar() [L160] input_167 = input_167 & mask_SORT_1 [L161] input_173 = __VERIFIER_nondet_uchar() [L162] input_173 = input_173 & mask_SORT_1 [L163] input_188 = __VERIFIER_nondet_uchar() [L164] input_206 = __VERIFIER_nondet_uchar() [L165] input_224 = __VERIFIER_nondet_uchar() [L168] SORT_1 var_55_arg_0 = state_29; [L169] SORT_4 var_55_arg_1 = var_53; [L170] SORT_4 var_55_arg_2 = var_54; 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_22_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_7_arg_1=0, init_9_arg_1=0, input_143=0, input_147=1, input_150=0, input_151=0, input_152=1, input_153=0, input_161=0, input_167=0, input_173=0, input_188=4, input_206=6, input_224=1, input_64=3, input_74=7, input_76=2, input_83=8, input_85=9, input_92=5, 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_21=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_6=0, state_8=0, var_122=2, var_125=2, var_20=0, var_5=0, var_53=1, var_54=0, var_55_arg_0=0, var_55_arg_1=1, var_55_arg_2=0, var_63=1, var_65=0, var_68=3, var_72=0] [L171] EXPR var_55_arg_0 ? var_55_arg_1 : var_55_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_22_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_7_arg_1=0, init_9_arg_1=0, input_143=0, input_147=1, input_150=0, input_151=0, input_152=1, input_153=0, input_161=0, input_167=0, input_173=0, input_188=4, input_206=6, input_224=1, input_64=3, input_74=7, input_76=2, input_83=8, input_85=9, input_92=5, 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_21=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_6=0, state_8=0, var_122=2, var_125=2, var_20=0, var_5=0, var_53=1, var_54=0, var_55_arg_0=0, var_55_arg_0 ? var_55_arg_1 : var_55_arg_2=0, var_55_arg_1=1, var_55_arg_2=0, var_63=1, var_65=0, var_68=3, var_72=0] [L171] SORT_4 var_55 = var_55_arg_0 ? var_55_arg_1 : var_55_arg_2; [L172] SORT_1 var_56_arg_0 = state_39; [L173] SORT_4 var_56_arg_1 = var_53; [L174] SORT_4 var_56_arg_2 = var_54; 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_22_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_7_arg_1=0, init_9_arg_1=0, input_143=0, input_147=1, input_150=0, input_151=0, input_152=1, input_153=0, input_161=0, input_167=0, input_173=0, input_188=4, input_206=6, input_224=1, input_64=3, input_74=7, input_76=2, input_83=8, input_85=9, input_92=5, 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_21=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_6=0, state_8=0, var_122=2, var_125=2, var_20=0, var_5=0, var_53=1, var_54=0, var_55=0, var_55_arg_0=0, var_55_arg_1=1, var_55_arg_2=0, var_56_arg_0=0, var_56_arg_1=1, var_56_arg_2=0, var_63=1, var_65=0, var_68=3, var_72=0] [L175] EXPR var_56_arg_0 ? var_56_arg_1 : var_56_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_22_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_7_arg_1=0, init_9_arg_1=0, input_143=0, input_147=1, input_150=0, input_151=0, input_152=1, input_153=0, input_161=0, input_167=0, input_173=0, input_188=4, input_206=6, input_224=1, input_64=3, input_74=7, input_76=2, input_83=8, input_85=9, input_92=5, 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_21=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_6=0, state_8=0, var_122=2, var_125=2, var_20=0, var_5=0, var_53=1, var_54=0, var_55=0, var_55_arg_0=0, var_55_arg_1=1, var_55_arg_2=0, var_56_arg_0=0, var_56_arg_0 ? var_56_arg_1 : var_56_arg_2=0, var_56_arg_1=1, var_56_arg_2=0, var_63=1, var_65=0, var_68=3, var_72=0] [L175] SORT_4 var_56 = var_56_arg_0 ? var_56_arg_1 : var_56_arg_2; [L176] SORT_4 var_57_arg_0 = var_55; [L177] SORT_4 var_57_arg_1 = var_56; [L178] SORT_4 var_57 = var_57_arg_0 + var_57_arg_1; [L179] SORT_1 var_58_arg_0 = state_49; [L180] SORT_4 var_58_arg_1 = var_53; [L181] SORT_4 var_58_arg_2 = var_54; 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_22_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_7_arg_1=0, init_9_arg_1=0, input_143=0, input_147=1, input_150=0, input_151=0, input_152=1, input_153=0, input_161=0, input_167=0, input_173=0, input_188=4, input_206=6, input_224=1, input_64=3, input_74=7, input_76=2, input_83=8, input_85=9, input_92=5, 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_21=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_6=0, state_8=0, var_122=2, var_125=2, var_20=0, var_5=0, var_53=1, var_54=0, var_55=0, var_55_arg_0=0, var_55_arg_1=1, var_55_arg_2=0, var_56=0, var_56_arg_0=0, var_56_arg_1=1, var_56_arg_2=0, var_57=0, var_57_arg_0=0, var_57_arg_1=0, var_58_arg_0=0, var_58_arg_1=1, var_58_arg_2=0, var_63=1, var_65=0, var_68=3, var_72=0] [L182] EXPR var_58_arg_0 ? var_58_arg_1 : var_58_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_22_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_7_arg_1=0, init_9_arg_1=0, input_143=0, input_147=1, input_150=0, input_151=0, input_152=1, input_153=0, input_161=0, input_167=0, input_173=0, input_188=4, input_206=6, input_224=1, input_64=3, input_74=7, input_76=2, input_83=8, input_85=9, input_92=5, 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_21=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_6=0, state_8=0, var_122=2, var_125=2, var_20=0, var_5=0, var_53=1, var_54=0, var_55=0, var_55_arg_0=0, var_55_arg_1=1, var_55_arg_2=0, var_56=0, var_56_arg_0=0, var_56_arg_1=1, var_56_arg_2=0, var_57=0, var_57_arg_0=0, var_57_arg_1=0, var_58_arg_0=0, var_58_arg_0 ? var_58_arg_1 : var_58_arg_2=0, var_58_arg_1=1, var_58_arg_2=0, var_63=1, var_65=0, var_68=3, var_72=0] [L182] SORT_4 var_58 = var_58_arg_0 ? var_58_arg_1 : var_58_arg_2; [L183] SORT_4 var_59_arg_0 = var_57; [L184] SORT_4 var_59_arg_1 = var_58; [L185] SORT_4 var_59 = var_59_arg_0 + var_59_arg_1; [L186] var_59 = var_59 & mask_SORT_4 [L187] SORT_4 var_60_arg_0 = var_59; [L188] SORT_4 var_60_arg_1 = var_53; [L189] SORT_1 var_60 = var_60_arg_0 <= var_60_arg_1; [L190] SORT_1 var_61_arg_0 = ~state_51; [L191] var_61_arg_0 = var_61_arg_0 & mask_SORT_1 [L192] SORT_1 var_61_arg_1 = ~var_60; [L193] var_61_arg_1 = var_61_arg_1 & mask_SORT_1 [L194] SORT_1 var_61 = var_61_arg_0 & var_61_arg_1; [L195] var_61 = var_61 & mask_SORT_1 [L196] SORT_1 bad_62_arg_0 = var_61; [L197] CALL __VERIFIER_assert(!(bad_62_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, 113 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 13.2s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 11.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3 mSolverCounterUnknown, 915 SdHoareTripleChecker+Valid, 11.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 915 mSDsluCounter, 1397 SdHoareTripleChecker+Invalid, 11.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 931 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 31 IncrementalHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 466 mSDtfsCounter, 31 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 3 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=115occurred 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, 309 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.9s 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 21:02:02,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/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_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/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_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.2.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/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_4ff06a49-6137-46a3-b888-219e2f8652dd/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 14f81a0d6a388b613f6256ef89322a578d67b2b4527606e37681918ec5903dd9 --- 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 21:02:04,313 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:02:04,317 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:02:04,364 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:02:04,365 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:02:04,369 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:02:04,372 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:02:04,378 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:02:04,384 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:02:04,390 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:02:04,391 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:02:04,392 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:02:04,393 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:02:04,396 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:02:04,398 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:02:04,399 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:02:04,401 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:02:04,402 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:02:04,404 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:02:04,413 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:02:04,415 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:02:04,416 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:02:04,419 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:02:04,422 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:02:04,428 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:02:04,431 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:02:04,432 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:02:04,433 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:02:04,434 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:02:04,436 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:02:04,436 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:02:04,437 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:02:04,439 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:02:04,440 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:02:04,441 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:02:04,441 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:02:04,442 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:02:04,443 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:02:04,443 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:02:04,445 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:02:04,446 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:02:04,447 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-02 21:02:04,487 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:02:04,487 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:02:04,488 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:02:04,488 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:02:04,489 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:02:04,490 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:02:04,491 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:02:04,491 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:02:04,492 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:02:04,492 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:02:04,493 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:02:04,493 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:02:04,493 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:02:04,494 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:02:04,494 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 21:02:04,494 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-02 21:02:04,495 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-02 21:02:04,495 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:02:04,495 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:02:04,495 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:02:04,495 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:02:04,496 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:02:04,496 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:02:04,496 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:02:04,496 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:02:04,497 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:02:04,497 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:02:04,497 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-02 21:02:04,497 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-02 21:02:04,498 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:02:04,498 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:02:04,498 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:02:04,499 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-02 21:02:04,499 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_4ff06a49-6137-46a3-b888-219e2f8652dd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 14f81a0d6a388b613f6256ef89322a578d67b2b4527606e37681918ec5903dd9 [2022-11-02 21:02:04,915 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:02:04,943 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:02:04,946 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:02:04,947 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:02:04,949 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:02:04,951 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.2.prop1-func-interl.c [2022-11-02 21:02:05,026 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/data/9aa2b93f6/a2ece73c2f9c4da394bf5dbf3195cb32/FLAGb156bac86 [2022-11-02 21:02:05,716 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:02:05,717 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.2.prop1-func-interl.c [2022-11-02 21:02:05,728 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/data/9aa2b93f6/a2ece73c2f9c4da394bf5dbf3195cb32/FLAGb156bac86 [2022-11-02 21:02:05,935 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/data/9aa2b93f6/a2ece73c2f9c4da394bf5dbf3195cb32 [2022-11-02 21:02:05,937 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:02:05,938 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:02:05,939 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:02:05,940 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:02:05,947 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:02:05,948 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:02:05" (1/1) ... [2022-11-02 21:02:05,949 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19e1e0ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:02:05, skipping insertion in model container [2022-11-02 21:02:05,949 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:02:05" (1/1) ... [2022-11-02 21:02:05,956 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:02:06,026 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:02:06,173 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_4ff06a49-6137-46a3-b888-219e2f8652dd/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.2.prop1-func-interl.c[1014,1027] [2022-11-02 21:02:06,522 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:02:06,525 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:02:06,537 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_4ff06a49-6137-46a3-b888-219e2f8652dd/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.2.prop1-func-interl.c[1014,1027] [2022-11-02 21:02:06,713 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:02:06,733 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:02:06,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:02:06 WrapperNode [2022-11-02 21:02:06,734 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:02:06,735 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:02:06,735 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:02:06,735 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:02:06,743 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:02:06" (1/1) ... [2022-11-02 21:02:06,771 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:02:06" (1/1) ... [2022-11-02 21:02:06,854 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1527 [2022-11-02 21:02:06,854 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:02:06,855 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:02:06,855 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:02:06,855 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:02:06,864 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:02:06" (1/1) ... [2022-11-02 21:02:06,865 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:02:06" (1/1) ... [2022-11-02 21:02:06,876 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:02:06" (1/1) ... [2022-11-02 21:02:06,876 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:02:06" (1/1) ... [2022-11-02 21:02:06,912 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:02:06" (1/1) ... [2022-11-02 21:02:06,934 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:02:06" (1/1) ... [2022-11-02 21:02:06,957 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:02:06" (1/1) ... [2022-11-02 21:02:06,963 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:02:06" (1/1) ... [2022-11-02 21:02:06,976 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:02:06,991 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:02:06,991 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:02:06,992 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:02:06,992 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:02:06" (1/1) ... [2022-11-02 21:02:07,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:02:07,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:02:07,040 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:02:07,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:02:07,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:02:07,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:02:07,498 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:02:07,500 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:02:08,902 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:02:08,910 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:02:08,910 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 21:02:08,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:02:08 BoogieIcfgContainer [2022-11-02 21:02:08,913 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:02:08,915 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:02:08,916 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:02:08,919 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:02:08,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:02:05" (1/3) ... [2022-11-02 21:02:08,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cca3c70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:02:08, skipping insertion in model container [2022-11-02 21:02:08,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:02:06" (2/3) ... [2022-11-02 21:02:08,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cca3c70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:02:08, skipping insertion in model container [2022-11-02 21:02:08,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:02:08" (3/3) ... [2022-11-02 21:02:08,924 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.anderson.2.prop1-func-interl.c [2022-11-02 21:02:08,943 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:02:08,943 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 21:02:09,016 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:02:09,023 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;@127f985e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:02:09,023 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 21:02:09,028 INFO L276 IsEmpty]: Start isEmpty. Operand has 113 states, 111 states have (on average 1.4954954954954955) internal successors, (166), 112 states have internal predecessors, (166), 0 states have call successors, (0), 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 21:02:09,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 21:02:09,034 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:09,035 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:02:09,035 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:02:09,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:09,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1473645707, now seen corresponding path program 1 times [2022-11-02 21:02:09,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:02:09,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2034919428] [2022-11-02 21:02:09,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:09,054 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:02:09,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:02:09,058 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:02:09,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-02 21:02:09,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:09,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:02:09,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:02:09,479 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 21:02:09,479 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:02:09,480 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:02:09,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2034919428] [2022-11-02 21:02:09,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2034919428] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:09,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:09,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:02:09,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453251917] [2022-11-02 21:02:09,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:09,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:02:09,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:02:09,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:02:09,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:02:09,517 INFO L87 Difference]: Start difference. First operand has 113 states, 111 states have (on average 1.4954954954954955) internal successors, (166), 112 states have internal predecessors, (166), 0 states have call successors, (0), 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 21:02:09,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:09,722 INFO L93 Difference]: Finished difference Result 433 states and 647 transitions. [2022-11-02 21:02:09,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:02:09,727 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 21:02:09,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:09,742 INFO L225 Difference]: With dead ends: 433 [2022-11-02 21:02:09,745 INFO L226 Difference]: Without dead ends: 322 [2022-11-02 21:02:09,752 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 21:02:09,757 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 466 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:09,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [466 Valid, 619 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:02:09,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2022-11-02 21:02:09,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 111. [2022-11-02 21:02:09,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 1.4727272727272727) internal successors, (162), 110 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 21:02:09,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 162 transitions. [2022-11-02 21:02:09,834 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 162 transitions. Word has length 11 [2022-11-02 21:02:09,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:09,834 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 162 transitions. [2022-11-02 21:02:09,835 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 21:02:09,835 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 162 transitions. [2022-11-02 21:02:09,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 21:02:09,836 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:09,836 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:02:09,850 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-11-02 21:02:10,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:02:10,050 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:02:10,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:10,051 INFO L85 PathProgramCache]: Analyzing trace with hash 2011974963, now seen corresponding path program 1 times [2022-11-02 21:02:10,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:02:10,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1173073590] [2022-11-02 21:02:10,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:10,052 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:02:10,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:02:10,054 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:02:10,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-02 21:02:10,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:10,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:02:10,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:02:10,412 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 21:02:10,412 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:02:10,413 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:02:10,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1173073590] [2022-11-02 21:02:10,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1173073590] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:10,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:10,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:02:10,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221702004] [2022-11-02 21:02:10,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:10,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:02:10,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:02:10,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:02:10,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:02:10,423 INFO L87 Difference]: Start difference. First operand 111 states and 162 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 21:02:10,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:10,603 INFO L93 Difference]: Finished difference Result 429 states and 631 transitions. [2022-11-02 21:02:10,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:02:10,606 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 21:02:10,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:10,607 INFO L225 Difference]: With dead ends: 429 [2022-11-02 21:02:10,608 INFO L226 Difference]: Without dead ends: 322 [2022-11-02 21:02:10,608 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 21:02:10,610 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 460 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 618 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:10,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [460 Valid, 618 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:02:10,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2022-11-02 21:02:10,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 113. [2022-11-02 21:02:10,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.4642857142857142) internal successors, (164), 112 states have internal predecessors, (164), 0 states have call successors, (0), 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 21:02:10,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 164 transitions. [2022-11-02 21:02:10,626 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 164 transitions. Word has length 11 [2022-11-02 21:02:10,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:10,629 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 164 transitions. [2022-11-02 21:02:10,629 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 21:02:10,629 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 164 transitions. [2022-11-02 21:02:10,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 21:02:10,633 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:10,633 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:02:10,653 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-02 21:02:10,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:02:10,847 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:02:10,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:10,848 INFO L85 PathProgramCache]: Analyzing trace with hash 2069233265, now seen corresponding path program 1 times [2022-11-02 21:02:10,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:02:10,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1443608631] [2022-11-02 21:02:10,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:10,849 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:02:10,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:02:10,850 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:02:10,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-02 21:02:11,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:11,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:02:11,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:02:11,188 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 21:02:11,189 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:02:11,189 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:02:11,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1443608631] [2022-11-02 21:02:11,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1443608631] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:11,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:11,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:02:11,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641336503] [2022-11-02 21:02:11,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:11,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:02:11,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:02:11,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:02:11,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:02:11,199 INFO L87 Difference]: Start difference. First operand 113 states and 164 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 21:02:11,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:11,331 INFO L93 Difference]: Finished difference Result 429 states and 630 transitions. [2022-11-02 21:02:11,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:02:11,333 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 21:02:11,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:11,335 INFO L225 Difference]: With dead ends: 429 [2022-11-02 21:02:11,336 INFO L226 Difference]: Without dead ends: 322 [2022-11-02 21:02:11,336 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 21:02:11,337 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 454 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 620 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:11,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [454 Valid, 620 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:02:11,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2022-11-02 21:02:11,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 115. [2022-11-02 21:02:11,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.456140350877193) internal successors, (166), 114 states have internal predecessors, (166), 0 states have call successors, (0), 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 21:02:11,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 166 transitions. [2022-11-02 21:02:11,353 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 166 transitions. Word has length 11 [2022-11-02 21:02:11,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:11,354 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 166 transitions. [2022-11-02 21:02:11,354 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 21:02:11,354 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 166 transitions. [2022-11-02 21:02:11,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 21:02:11,354 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:11,354 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:02:11,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-02 21:02:11,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:02:11,562 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:02:11,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:11,563 INFO L85 PathProgramCache]: Analyzing trace with hash 2069292847, now seen corresponding path program 1 times [2022-11-02 21:02:11,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:02:11,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2059555384] [2022-11-02 21:02:11,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:11,564 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:02:11,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:02:11,565 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:02:11,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-02 21:02:11,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:11,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-02 21:02:11,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:02:12,228 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 21:02:12,229 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:02:12,229 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:02:12,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2059555384] [2022-11-02 21:02:12,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2059555384] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:12,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:12,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 21:02:12,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311793088] [2022-11-02 21:02:12,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:12,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 21:02:12,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:02:12,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 21:02:12,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:02:12,232 INFO L87 Difference]: Start difference. First operand 115 states and 166 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 21:02:13,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:13,801 INFO L93 Difference]: Finished difference Result 453 states and 661 transitions. [2022-11-02 21:02:13,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-02 21:02:13,802 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 21:02:13,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:13,803 INFO L225 Difference]: With dead ends: 453 [2022-11-02 21:02:13,804 INFO L226 Difference]: Without dead ends: 451 [2022-11-02 21:02:13,804 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 21:02:13,805 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 1077 mSDsluCounter, 1301 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1077 SdHoareTripleChecker+Valid, 1454 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:13,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1077 Valid, 1454 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-02 21:02:13,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2022-11-02 21:02:13,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 121. [2022-11-02 21:02:13,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.45) internal successors, (174), 120 states have internal predecessors, (174), 0 states have call successors, (0), 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 21:02:13,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 174 transitions. [2022-11-02 21:02:13,815 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 174 transitions. Word has length 11 [2022-11-02 21:02:13,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:13,815 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 174 transitions. [2022-11-02 21:02:13,815 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 21:02:13,816 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 174 transitions. [2022-11-02 21:02:13,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-02 21:02:13,818 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:13,819 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:02:13,835 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-02 21:02:14,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:02:14,031 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:02:14,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:14,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1080052299, now seen corresponding path program 1 times [2022-11-02 21:02:14,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:02:14,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1688322325] [2022-11-02 21:02:14,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:14,035 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:02:14,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:02:14,036 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:02:14,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-02 21:02:14,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:15,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 1281 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 21:02:15,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:02:15,176 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 21:02:15,177 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:02:15,177 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:02:15,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1688322325] [2022-11-02 21:02:15,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1688322325] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:15,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:15,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:02:15,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382953227] [2022-11-02 21:02:15,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:15,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:02:15,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:02:15,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:02:15,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:02:15,180 INFO L87 Difference]: Start difference. First operand 121 states and 174 transitions. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 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 21:02:15,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:15,411 INFO L93 Difference]: Finished difference Result 238 states and 345 transitions. [2022-11-02 21:02:15,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:02:15,412 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2022-11-02 21:02:15,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:15,413 INFO L225 Difference]: With dead ends: 238 [2022-11-02 21:02:15,413 INFO L226 Difference]: Without dead ends: 125 [2022-11-02 21:02:15,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 113 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 21:02:15,414 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 1 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 32 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:15,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 412 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 32 Unchecked, 0.2s Time] [2022-11-02 21:02:15,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2022-11-02 21:02:15,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2022-11-02 21:02:15,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 1.435483870967742) internal successors, (178), 124 states have internal predecessors, (178), 0 states have call successors, (0), 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 21:02:15,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 178 transitions. [2022-11-02 21:02:15,421 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 178 transitions. Word has length 116 [2022-11-02 21:02:15,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:15,421 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 178 transitions. [2022-11-02 21:02:15,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 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 21:02:15,422 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 178 transitions. [2022-11-02 21:02:15,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-02 21:02:15,423 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:15,424 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:02:15,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-02 21:02:15,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:02:15,639 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:02:15,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:15,639 INFO L85 PathProgramCache]: Analyzing trace with hash -961610825, now seen corresponding path program 1 times [2022-11-02 21:02:15,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:02:15,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1400953628] [2022-11-02 21:02:15,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:15,641 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:02:15,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:02:15,642 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:02:15,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-02 21:02:16,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:16,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 1281 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 21:02:16,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:02:16,636 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 21:02:16,636 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:02:16,636 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:02:16,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1400953628] [2022-11-02 21:02:16,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1400953628] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:16,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:16,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:02:16,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498134687] [2022-11-02 21:02:16,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:16,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:02:16,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:02:16,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:02:16,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:02:16,639 INFO L87 Difference]: Start difference. First operand 125 states and 178 transitions. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 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 21:02:16,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:16,812 INFO L93 Difference]: Finished difference Result 238 states and 344 transitions. [2022-11-02 21:02:16,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:02:16,812 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2022-11-02 21:02:16,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:16,813 INFO L225 Difference]: With dead ends: 238 [2022-11-02 21:02:16,813 INFO L226 Difference]: Without dead ends: 125 [2022-11-02 21:02:16,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 113 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 21:02:16,815 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 148 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:16,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 257 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:02:16,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2022-11-02 21:02:16,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2022-11-02 21:02:16,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 1.4274193548387097) internal successors, (177), 124 states have internal predecessors, (177), 0 states have call successors, (0), 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 21:02:16,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 177 transitions. [2022-11-02 21:02:16,821 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 177 transitions. Word has length 116 [2022-11-02 21:02:16,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:16,821 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 177 transitions. [2022-11-02 21:02:16,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 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 21:02:16,822 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 177 transitions. [2022-11-02 21:02:16,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-02 21:02:16,823 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:16,824 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:02:16,855 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-02 21:02:17,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:02:17,039 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:02:17,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:17,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1299962425, now seen corresponding path program 1 times [2022-11-02 21:02:17,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:02:17,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1736222256] [2022-11-02 21:02:17,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:17,041 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:02:17,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:02:17,042 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:02:17,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-02 21:02:17,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:17,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 1281 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 21:02:17,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:02:18,143 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 21:02:18,143 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:02:18,144 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:02:18,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1736222256] [2022-11-02 21:02:18,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1736222256] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:18,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:18,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:02:18,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308083666] [2022-11-02 21:02:18,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:18,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:02:18,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:02:18,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:02:18,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:02:18,148 INFO L87 Difference]: Start difference. First operand 125 states and 177 transitions. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 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 21:02:18,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:18,645 INFO L93 Difference]: Finished difference Result 333 states and 483 transitions. [2022-11-02 21:02:18,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:02:18,645 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2022-11-02 21:02:18,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:18,646 INFO L225 Difference]: With dead ends: 333 [2022-11-02 21:02:18,647 INFO L226 Difference]: Without dead ends: 220 [2022-11-02 21:02:18,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 113 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 21:02:18,648 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 138 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:18,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 373 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 21:02:18,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2022-11-02 21:02:18,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 129. [2022-11-02 21:02:18,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 128 states have (on average 1.4140625) internal successors, (181), 128 states have internal predecessors, (181), 0 states have call successors, (0), 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 21:02:18,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 181 transitions. [2022-11-02 21:02:18,655 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 181 transitions. Word has length 116 [2022-11-02 21:02:18,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:18,655 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 181 transitions. [2022-11-02 21:02:18,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 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 21:02:18,656 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 181 transitions. [2022-11-02 21:02:18,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-02 21:02:18,657 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:18,657 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:02:18,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-02 21:02:18,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:02:18,879 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:02:18,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:18,879 INFO L85 PathProgramCache]: Analyzing trace with hash -7179973, now seen corresponding path program 1 times [2022-11-02 21:02:18,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:02:18,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [756509101] [2022-11-02 21:02:18,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:18,881 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:02:18,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:02:18,882 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:02:18,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-02 21:02:19,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:19,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 1281 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 21:02:19,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:02:19,910 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 21:02:19,910 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:02:19,911 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:02:19,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [756509101] [2022-11-02 21:02:19,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [756509101] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:19,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:19,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:02:19,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414705973] [2022-11-02 21:02:19,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:19,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:02:19,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:02:19,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:02:19,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:02:19,914 INFO L87 Difference]: Start difference. First operand 129 states and 181 transitions. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 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 21:02:20,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:20,042 INFO L93 Difference]: Finished difference Result 242 states and 346 transitions. [2022-11-02 21:02:20,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:02:20,043 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2022-11-02 21:02:20,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:20,044 INFO L225 Difference]: With dead ends: 242 [2022-11-02 21:02:20,044 INFO L226 Difference]: Without dead ends: 129 [2022-11-02 21:02:20,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 113 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 21:02:20,045 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 143 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:20,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 257 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:02:20,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-11-02 21:02:20,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2022-11-02 21:02:20,050 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 21:02:20,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 180 transitions. [2022-11-02 21:02:20,051 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 180 transitions. Word has length 116 [2022-11-02 21:02:20,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:20,051 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 180 transitions. [2022-11-02 21:02:20,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 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 21:02:20,052 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 180 transitions. [2022-11-02 21:02:20,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-02 21:02:20,059 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:20,059 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:02:20,099 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-02 21:02:20,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:02:20,279 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:02:20,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:20,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1023860925, now seen corresponding path program 1 times [2022-11-02 21:02:20,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:02:20,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [612330517] [2022-11-02 21:02:20,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:20,280 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:02:20,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:02:20,282 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:02:20,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-02 21:02:21,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:21,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 1281 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 21:02:21,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:02:21,417 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 21:02:21,421 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:02:21,421 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:02:21,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [612330517] [2022-11-02 21:02:21,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [612330517] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:21,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:21,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:02:21,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318539395] [2022-11-02 21:02:21,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:21,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:02:21,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:02:21,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:02:21,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:02:21,424 INFO L87 Difference]: Start difference. First operand 129 states and 180 transitions. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 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 21:02:21,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:21,997 INFO L93 Difference]: Finished difference Result 333 states and 479 transitions. [2022-11-02 21:02:22,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:02:22,003 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2022-11-02 21:02:22,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:22,007 INFO L225 Difference]: With dead ends: 333 [2022-11-02 21:02:22,007 INFO L226 Difference]: Without dead ends: 220 [2022-11-02 21:02:22,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 113 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 21:02:22,011 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 132 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:22,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 371 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 21:02:22,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2022-11-02 21:02:22,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 133. [2022-11-02 21:02:22,019 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 21:02:22,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 184 transitions. [2022-11-02 21:02:22,020 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 184 transitions. Word has length 116 [2022-11-02 21:02:22,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:22,021 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 184 transitions. [2022-11-02 21:02:22,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 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 21:02:22,021 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 184 transitions. [2022-11-02 21:02:22,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-02 21:02:22,023 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:22,023 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:02:22,059 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-11-02 21:02:22,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:02:22,248 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:02:22,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:22,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1670035265, now seen corresponding path program 1 times [2022-11-02 21:02:22,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:02:22,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [905317160] [2022-11-02 21:02:22,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:22,250 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:02:22,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:02:22,252 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:02:22,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-02 21:02:23,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:23,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 1281 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-02 21:02:23,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:02:23,756 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 21:02:23,757 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:02:23,757 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:02:23,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [905317160] [2022-11-02 21:02:23,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [905317160] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:23,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:23,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 21:02:23,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37496285] [2022-11-02 21:02:23,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:23,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 21:02:23,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:02:23,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 21:02:23,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:02:23,760 INFO L87 Difference]: Start difference. First operand 133 states and 184 transitions. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 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 21:02:25,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:25,452 INFO L93 Difference]: Finished difference Result 474 states and 678 transitions. [2022-11-02 21:02:25,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 21:02:25,453 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2022-11-02 21:02:25,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:25,454 INFO L225 Difference]: With dead ends: 474 [2022-11-02 21:02:25,454 INFO L226 Difference]: Without dead ends: 361 [2022-11-02 21:02:25,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2022-11-02 21:02:25,455 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 881 mSDsluCounter, 1329 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 881 SdHoareTripleChecker+Valid, 1455 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:25,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [881 Valid, 1455 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-02 21:02:25,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2022-11-02 21:02:25,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 139. [2022-11-02 21:02:25,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 138 states have (on average 1.391304347826087) internal successors, (192), 138 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 21:02:25,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 192 transitions. [2022-11-02 21:02:25,462 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 192 transitions. Word has length 116 [2022-11-02 21:02:25,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:25,462 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 192 transitions. [2022-11-02 21:02:25,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 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 21:02:25,463 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 192 transitions. [2022-11-02 21:02:25,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-02 21:02:25,464 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:25,465 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:02:25,500 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-02 21:02:25,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:02:25,687 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:02:25,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:25,687 INFO L85 PathProgramCache]: Analyzing trace with hash 684350017, now seen corresponding path program 1 times [2022-11-02 21:02:25,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:02:25,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2051793962] [2022-11-02 21:02:25,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:25,689 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:02:25,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:02:25,689 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:02:25,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-02 21:02:26,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:26,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 1281 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-02 21:02:26,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:02:27,087 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 21:02:27,087 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:02:27,087 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:02:27,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2051793962] [2022-11-02 21:02:27,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2051793962] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:27,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:27,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 21:02:27,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211373800] [2022-11-02 21:02:27,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:27,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 21:02:27,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:02:27,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 21:02:27,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:02:27,090 INFO L87 Difference]: Start difference. First operand 139 states and 192 transitions. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 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 21:02:28,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:28,736 INFO L93 Difference]: Finished difference Result 470 states and 671 transitions. [2022-11-02 21:02:28,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 21:02:28,737 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2022-11-02 21:02:28,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:28,739 INFO L225 Difference]: With dead ends: 470 [2022-11-02 21:02:28,739 INFO L226 Difference]: Without dead ends: 357 [2022-11-02 21:02:28,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2022-11-02 21:02:28,740 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 858 mSDsluCounter, 1315 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 1451 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:28,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [858 Valid, 1451 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-02 21:02:28,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2022-11-02 21:02:28,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 143. [2022-11-02 21:02:28,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.3873239436619718) internal successors, (197), 142 states have internal predecessors, (197), 0 states have call successors, (0), 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 21:02:28,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 197 transitions. [2022-11-02 21:02:28,748 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 197 transitions. Word has length 116 [2022-11-02 21:02:28,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:28,748 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 197 transitions. [2022-11-02 21:02:28,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 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 21:02:28,749 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 197 transitions. [2022-11-02 21:02:28,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-02 21:02:28,750 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:28,750 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:02:28,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-02 21:02:28,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:02:28,963 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:02:28,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:28,963 INFO L85 PathProgramCache]: Analyzing trace with hash 98073795, now seen corresponding path program 1 times [2022-11-02 21:02:28,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:02:28,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1901910125] [2022-11-02 21:02:28,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:28,964 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:02:28,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:02:28,965 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:02:28,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-02 21:02:29,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:29,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 1281 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-02 21:02:29,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:02:30,344 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 21:02:30,345 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:02:30,345 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:02:30,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1901910125] [2022-11-02 21:02:30,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1901910125] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:30,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:30,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 21:02:30,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814254920] [2022-11-02 21:02:30,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:30,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 21:02:30,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:02:30,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 21:02:30,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:02:30,347 INFO L87 Difference]: Start difference. First operand 143 states and 197 transitions. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 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 21:02:32,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:32,004 INFO L93 Difference]: Finished difference Result 466 states and 665 transitions. [2022-11-02 21:02:32,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 21:02:32,005 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2022-11-02 21:02:32,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:32,007 INFO L225 Difference]: With dead ends: 466 [2022-11-02 21:02:32,007 INFO L226 Difference]: Without dead ends: 353 [2022-11-02 21:02:32,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2022-11-02 21:02:32,008 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 838 mSDsluCounter, 1298 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 838 SdHoareTripleChecker+Valid, 1444 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:32,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [838 Valid, 1444 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-02 21:02:32,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2022-11-02 21:02:32,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 147. [2022-11-02 21:02:32,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 1.3835616438356164) internal successors, (202), 146 states have internal predecessors, (202), 0 states have call successors, (0), 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 21:02:32,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 202 transitions. [2022-11-02 21:02:32,016 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 202 transitions. Word has length 116 [2022-11-02 21:02:32,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:32,016 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 202 transitions. [2022-11-02 21:02:32,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 states have internal predecessors, (116), 0 states have call successors, (0), 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 21:02:32,017 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 202 transitions. [2022-11-02 21:02:32,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-02 21:02:32,018 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:32,018 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:02:32,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-02 21:02:32,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:02:32,231 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:02:32,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:32,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1422929989, now seen corresponding path program 1 times [2022-11-02 21:02:32,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:02:32,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2118785580] [2022-11-02 21:02:32,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:32,232 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:02:32,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:02:32,233 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:02:32,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-02 21:02:32,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:33,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 1281 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 21:02:33,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:02:33,292 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 21:02:33,292 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:02:33,293 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:02:33,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2118785580] [2022-11-02 21:02:33,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2118785580] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:33,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:33,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:02:33,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369193197] [2022-11-02 21:02:33,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:33,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:02:33,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:02:33,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:02:33,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:02:33,295 INFO L87 Difference]: Start difference. First operand 147 states and 202 transitions. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 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 21:02:33,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:33,836 INFO L93 Difference]: Finished difference Result 445 states and 637 transitions. [2022-11-02 21:02:33,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:02:33,837 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2022-11-02 21:02:33,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:33,839 INFO L225 Difference]: With dead ends: 445 [2022-11-02 21:02:33,839 INFO L226 Difference]: Without dead ends: 332 [2022-11-02 21:02:33,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 113 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 21:02:33,840 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 370 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:33,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [370 Valid, 549 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 21:02:33,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2022-11-02 21:02:33,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 149. [2022-11-02 21:02:33,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 1.3783783783783783) internal successors, (204), 148 states have internal predecessors, (204), 0 states have call successors, (0), 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 21:02:33,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 204 transitions. [2022-11-02 21:02:33,848 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 204 transitions. Word has length 116 [2022-11-02 21:02:33,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:33,848 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 204 transitions. [2022-11-02 21:02:33,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 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 21:02:33,849 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 204 transitions. [2022-11-02 21:02:33,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-02 21:02:33,850 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:33,850 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:02:33,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-02 21:02:34,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:02:34,063 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:02:34,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:34,063 INFO L85 PathProgramCache]: Analyzing trace with hash 365091911, now seen corresponding path program 1 times [2022-11-02 21:02:34,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:02:34,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1146532213] [2022-11-02 21:02:34,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:34,065 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:02:34,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:02:34,067 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:02:34,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-02 21:02:34,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:34,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 1281 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 21:02:34,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:02:35,167 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 21:02:35,168 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:02:35,168 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:02:35,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1146532213] [2022-11-02 21:02:35,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1146532213] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:35,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:35,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:02:35,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122797869] [2022-11-02 21:02:35,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:35,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:02:35,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:02:35,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:02:35,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:02:35,170 INFO L87 Difference]: Start difference. First operand 149 states and 204 transitions. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 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 21:02:35,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:35,732 INFO L93 Difference]: Finished difference Result 486 states and 692 transitions. [2022-11-02 21:02:35,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:02:35,736 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2022-11-02 21:02:35,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:35,737 INFO L225 Difference]: With dead ends: 486 [2022-11-02 21:02:35,738 INFO L226 Difference]: Without dead ends: 373 [2022-11-02 21:02:35,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 112 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 21:02:35,739 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 550 mSDsluCounter, 648 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 830 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:35,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [550 Valid, 830 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 21:02:35,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2022-11-02 21:02:35,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 157. [2022-11-02 21:02:35,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 156 states have (on average 1.3782051282051282) internal successors, (215), 156 states have internal predecessors, (215), 0 states have call successors, (0), 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 21:02:35,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 215 transitions. [2022-11-02 21:02:35,747 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 215 transitions. Word has length 116 [2022-11-02 21:02:35,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:35,748 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 215 transitions. [2022-11-02 21:02:35,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 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 21:02:35,748 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 215 transitions. [2022-11-02 21:02:35,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-02 21:02:35,749 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:35,749 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:02:35,773 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-02 21:02:35,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:02:35,959 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:02:35,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:35,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1545950647, now seen corresponding path program 1 times [2022-11-02 21:02:35,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:02:35,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [500205151] [2022-11-02 21:02:35,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:35,960 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:02:35,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:02:35,961 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:02:35,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-02 21:02:36,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:36,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 1281 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 21:02:36,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:02:37,143 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 21:02:37,143 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:02:37,144 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:02:37,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [500205151] [2022-11-02 21:02:37,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [500205151] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:37,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:37,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:02:37,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576441871] [2022-11-02 21:02:37,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:37,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:02:37,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:02:37,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:02:37,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:02:37,149 INFO L87 Difference]: Start difference. First operand 157 states and 215 transitions. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 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 21:02:37,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:37,669 INFO L93 Difference]: Finished difference Result 445 states and 635 transitions. [2022-11-02 21:02:37,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:02:37,670 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2022-11-02 21:02:37,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:37,672 INFO L225 Difference]: With dead ends: 445 [2022-11-02 21:02:37,672 INFO L226 Difference]: Without dead ends: 332 [2022-11-02 21:02:37,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 113 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 21:02:37,673 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 338 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:37,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 574 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 21:02:37,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2022-11-02 21:02:37,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 161. [2022-11-02 21:02:37,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 160 states have (on average 1.375) internal successors, (220), 160 states have internal predecessors, (220), 0 states have call successors, (0), 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 21:02:37,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 220 transitions. [2022-11-02 21:02:37,681 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 220 transitions. Word has length 116 [2022-11-02 21:02:37,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:37,682 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 220 transitions. [2022-11-02 21:02:37,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 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 21:02:37,682 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 220 transitions. [2022-11-02 21:02:37,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-02 21:02:37,684 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:37,684 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:02:37,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-02 21:02:37,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:02:37,902 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:02:37,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:37,903 INFO L85 PathProgramCache]: Analyzing trace with hash -2038576821, now seen corresponding path program 1 times [2022-11-02 21:02:37,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:02:37,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2112410368] [2022-11-02 21:02:37,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:37,904 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:02:37,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:02:37,906 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:02:37,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-02 21:02:38,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:38,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 1281 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-02 21:02:38,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:02:39,537 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 21:02:39,537 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:02:39,537 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:02:39,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2112410368] [2022-11-02 21:02:39,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2112410368] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:39,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:39,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 21:02:39,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793209277] [2022-11-02 21:02:39,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:39,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 21:02:39,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:02:39,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 21:02:39,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:02:39,539 INFO L87 Difference]: Start difference. First operand 161 states and 220 transitions. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 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 21:02:41,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:41,356 INFO L93 Difference]: Finished difference Result 498 states and 708 transitions. [2022-11-02 21:02:41,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:02:41,360 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2022-11-02 21:02:41,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:41,361 INFO L225 Difference]: With dead ends: 498 [2022-11-02 21:02:41,362 INFO L226 Difference]: Without dead ends: 385 [2022-11-02 21:02:41,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2022-11-02 21:02:41,363 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 983 mSDsluCounter, 1526 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 983 SdHoareTripleChecker+Valid, 1683 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:41,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [983 Valid, 1683 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-02 21:02:41,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2022-11-02 21:02:41,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 163. [2022-11-02 21:02:41,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.3703703703703705) internal successors, (222), 162 states have internal predecessors, (222), 0 states have call successors, (0), 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 21:02:41,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 222 transitions. [2022-11-02 21:02:41,382 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 222 transitions. Word has length 116 [2022-11-02 21:02:41,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:41,382 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 222 transitions. [2022-11-02 21:02:41,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 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 21:02:41,383 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 222 transitions. [2022-11-02 21:02:41,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-02 21:02:41,384 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:41,384 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:02:41,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-02 21:02:41,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:02:41,607 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:02:41,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:41,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1040236749, now seen corresponding path program 1 times [2022-11-02 21:02:41,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:02:41,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [221348009] [2022-11-02 21:02:41,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:41,608 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:02:41,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:02:41,609 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:02:41,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-02 21:02:42,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:42,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 1281 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 21:02:42,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:02:42,734 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 21:02:42,735 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:02:42,735 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:02:42,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [221348009] [2022-11-02 21:02:42,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [221348009] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:42,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:42,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:02:42,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630315238] [2022-11-02 21:02:42,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:42,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:02:42,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:02:42,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:02:42,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:02:42,737 INFO L87 Difference]: Start difference. First operand 163 states and 222 transitions. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 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 21:02:43,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:43,216 INFO L93 Difference]: Finished difference Result 498 states and 707 transitions. [2022-11-02 21:02:43,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:02:43,218 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2022-11-02 21:02:43,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:43,220 INFO L225 Difference]: With dead ends: 498 [2022-11-02 21:02:43,220 INFO L226 Difference]: Without dead ends: 385 [2022-11-02 21:02:43,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 112 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 21:02:43,221 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 544 mSDsluCounter, 665 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 866 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:43,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [544 Valid, 866 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:02:43,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2022-11-02 21:02:43,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 165. [2022-11-02 21:02:43,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 164 states have (on average 1.3658536585365855) internal successors, (224), 164 states have internal predecessors, (224), 0 states have call successors, (0), 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 21:02:43,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 224 transitions. [2022-11-02 21:02:43,230 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 224 transitions. Word has length 116 [2022-11-02 21:02:43,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:43,230 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 224 transitions. [2022-11-02 21:02:43,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 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 21:02:43,231 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 224 transitions. [2022-11-02 21:02:43,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-02 21:02:43,231 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:43,232 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:02:43,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-02 21:02:43,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:02:43,446 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:02:43,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:43,447 INFO L85 PathProgramCache]: Analyzing trace with hash -645943089, now seen corresponding path program 1 times [2022-11-02 21:02:43,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:02:43,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [709426499] [2022-11-02 21:02:43,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:43,448 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:02:43,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:02:43,449 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:02:43,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-02 21:02:44,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:44,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 1281 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 21:02:44,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:02:44,558 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 21:02:44,558 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:02:44,558 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:02:44,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [709426499] [2022-11-02 21:02:44,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [709426499] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:44,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:44,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:02:44,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717880863] [2022-11-02 21:02:44,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:44,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:02:44,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:02:44,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:02:44,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:02:44,561 INFO L87 Difference]: Start difference. First operand 165 states and 224 transitions. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 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 21:02:45,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:45,119 INFO L93 Difference]: Finished difference Result 498 states and 706 transitions. [2022-11-02 21:02:45,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:02:45,120 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2022-11-02 21:02:45,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:45,121 INFO L225 Difference]: With dead ends: 498 [2022-11-02 21:02:45,121 INFO L226 Difference]: Without dead ends: 385 [2022-11-02 21:02:45,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:02:45,122 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 532 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 855 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:45,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [532 Valid, 855 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 21:02:45,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2022-11-02 21:02:45,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 169. [2022-11-02 21:02:45,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 168 states have (on average 1.3630952380952381) internal successors, (229), 168 states have internal predecessors, (229), 0 states have call successors, (0), 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 21:02:45,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 229 transitions. [2022-11-02 21:02:45,129 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 229 transitions. Word has length 116 [2022-11-02 21:02:45,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:45,130 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 229 transitions. [2022-11-02 21:02:45,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 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 21:02:45,130 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 229 transitions. [2022-11-02 21:02:45,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-02 21:02:45,131 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:45,131 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:02:45,167 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2022-11-02 21:02:45,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:02:45,349 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:02:45,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:45,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1315631569, now seen corresponding path program 1 times [2022-11-02 21:02:45,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:02:45,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [346204110] [2022-11-02 21:02:45,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:45,350 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:02:45,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:02:45,351 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:02:45,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-02 21:02:46,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:46,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 1281 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-02 21:02:46,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:02:46,994 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 21:02:46,995 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:02:46,995 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:02:46,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [346204110] [2022-11-02 21:02:46,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [346204110] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:46,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:46,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 21:02:46,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289513581] [2022-11-02 21:02:46,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:46,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 21:02:46,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:02:46,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 21:02:46,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:02:46,998 INFO L87 Difference]: Start difference. First operand 169 states and 229 transitions. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 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 21:02:48,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:48,737 INFO L93 Difference]: Finished difference Result 498 states and 705 transitions. [2022-11-02 21:02:48,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:02:48,739 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2022-11-02 21:02:48,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:48,741 INFO L225 Difference]: With dead ends: 498 [2022-11-02 21:02:48,741 INFO L226 Difference]: Without dead ends: 385 [2022-11-02 21:02:48,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2022-11-02 21:02:48,743 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 945 mSDsluCounter, 1481 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 945 SdHoareTripleChecker+Valid, 1657 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:48,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [945 Valid, 1657 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-02 21:02:48,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2022-11-02 21:02:48,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 171. [2022-11-02 21:02:48,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 170 states have (on average 1.3588235294117648) internal successors, (231), 170 states have internal predecessors, (231), 0 states have call successors, (0), 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 21:02:48,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 231 transitions. [2022-11-02 21:02:48,752 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 231 transitions. Word has length 116 [2022-11-02 21:02:48,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:48,752 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 231 transitions. [2022-11-02 21:02:48,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 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 21:02:48,752 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 231 transitions. [2022-11-02 21:02:48,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-02 21:02:48,753 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:48,753 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:02:48,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-02 21:02:48,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:02:48,971 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:02:48,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:48,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1876331347, now seen corresponding path program 1 times [2022-11-02 21:02:48,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:02:48,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1844743924] [2022-11-02 21:02:48,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:48,973 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:02:48,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:02:48,975 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:02:48,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-02 21:02:49,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:49,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 1281 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 21:02:49,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:02:50,166 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 21:02:50,166 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:02:50,166 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:02:50,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1844743924] [2022-11-02 21:02:50,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1844743924] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:50,166 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:50,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:02:50,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235352010] [2022-11-02 21:02:50,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:50,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:02:50,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:02:50,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:02:50,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:02:50,168 INFO L87 Difference]: Start difference. First operand 171 states and 231 transitions. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 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 21:02:50,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:50,291 INFO L93 Difference]: Finished difference Result 284 states and 395 transitions. [2022-11-02 21:02:50,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:02:50,292 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2022-11-02 21:02:50,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:50,293 INFO L225 Difference]: With dead ends: 284 [2022-11-02 21:02:50,293 INFO L226 Difference]: Without dead ends: 171 [2022-11-02 21:02:50,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 113 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 21:02:50,294 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 86 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:50,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 257 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:02:50,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2022-11-02 21:02:50,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2022-11-02 21:02:50,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 170 states have (on average 1.3529411764705883) internal successors, (230), 170 states have internal predecessors, (230), 0 states have call successors, (0), 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 21:02:50,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 230 transitions. [2022-11-02 21:02:50,304 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 230 transitions. Word has length 116 [2022-11-02 21:02:50,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:50,304 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 230 transitions. [2022-11-02 21:02:50,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 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 21:02:50,305 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 230 transitions. [2022-11-02 21:02:50,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-02 21:02:50,305 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:50,306 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:02:50,342 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-02 21:02:50,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:02:50,527 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:02:50,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:50,527 INFO L85 PathProgramCache]: Analyzing trace with hash 978938069, now seen corresponding path program 1 times [2022-11-02 21:02:50,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:02:50,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1541774124] [2022-11-02 21:02:50,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:50,529 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:02:50,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:02:50,530 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:02:50,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-02 21:02:51,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:51,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 1281 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:02:51,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:02:51,915 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 21:02:51,915 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:02:51,915 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:02:51,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1541774124] [2022-11-02 21:02:51,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1541774124] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:51,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:51,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:02:51,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271755072] [2022-11-02 21:02:51,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:51,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:02:51,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:02:51,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:02:51,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:02:51,917 INFO L87 Difference]: Start difference. First operand 171 states and 230 transitions. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 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 21:02:52,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:52,160 INFO L93 Difference]: Finished difference Result 342 states and 469 transitions. [2022-11-02 21:02:52,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:02:52,161 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2022-11-02 21:02:52,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:52,162 INFO L225 Difference]: With dead ends: 342 [2022-11-02 21:02:52,163 INFO L226 Difference]: Without dead ends: 229 [2022-11-02 21:02:52,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:02:52,164 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 17 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 48 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:52,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 538 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 48 Unchecked, 0.2s Time] [2022-11-02 21:02:52,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2022-11-02 21:02:52,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2022-11-02 21:02:52,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 228 states have (on average 1.337719298245614) internal successors, (305), 228 states have internal predecessors, (305), 0 states have call successors, (0), 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 21:02:52,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 305 transitions. [2022-11-02 21:02:52,172 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 305 transitions. Word has length 116 [2022-11-02 21:02:52,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:52,172 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 305 transitions. [2022-11-02 21:02:52,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 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 21:02:52,173 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 305 transitions. [2022-11-02 21:02:52,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-02 21:02:52,173 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:52,174 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:02:52,214 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-02 21:02:52,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:02:52,395 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:02:52,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:52,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1638469591, now seen corresponding path program 1 times [2022-11-02 21:02:52,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:02:52,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1515764655] [2022-11-02 21:02:52,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:52,397 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:02:52,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:02:52,398 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:02:52,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-02 21:02:53,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:53,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 1281 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 21:02:53,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:02:53,674 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 21:02:53,674 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:02:53,675 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:02:53,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1515764655] [2022-11-02 21:02:53,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1515764655] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:53,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:53,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:02:53,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854275780] [2022-11-02 21:02:53,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:53,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:02:53,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:02:53,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:02:53,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:02:53,677 INFO L87 Difference]: Start difference. First operand 229 states and 305 transitions. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 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 21:02:53,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:53,802 INFO L93 Difference]: Finished difference Result 342 states and 468 transitions. [2022-11-02 21:02:53,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:02:53,806 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2022-11-02 21:02:53,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:53,807 INFO L225 Difference]: With dead ends: 342 [2022-11-02 21:02:53,807 INFO L226 Difference]: Without dead ends: 229 [2022-11-02 21:02:53,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 113 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 21:02:53,808 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 77 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:53,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 257 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:02:53,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2022-11-02 21:02:53,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2022-11-02 21:02:53,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 228 states have (on average 1.3333333333333333) internal successors, (304), 228 states have internal predecessors, (304), 0 states have call successors, (0), 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 21:02:53,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 304 transitions. [2022-11-02 21:02:53,818 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 304 transitions. Word has length 116 [2022-11-02 21:02:53,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:53,818 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 304 transitions. [2022-11-02 21:02:53,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 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 21:02:53,819 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 304 transitions. [2022-11-02 21:02:53,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-02 21:02:53,820 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:53,820 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:02:53,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-02 21:02:54,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:02:54,047 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:02:54,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:54,047 INFO L85 PathProgramCache]: Analyzing trace with hash 794464089, now seen corresponding path program 1 times [2022-11-02 21:02:54,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:02:54,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1352131799] [2022-11-02 21:02:54,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:54,049 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:02:54,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:02:54,050 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:02:54,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-02 21:02:54,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:54,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 1281 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:02:54,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:02:55,492 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 21:02:55,492 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:02:55,492 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:02:55,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1352131799] [2022-11-02 21:02:55,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1352131799] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:55,493 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:55,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:02:55,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409108558] [2022-11-02 21:02:55,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:55,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:02:55,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:02:55,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:02:55,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:02:55,495 INFO L87 Difference]: Start difference. First operand 229 states and 304 transitions. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 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 21:02:55,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:55,586 INFO L93 Difference]: Finished difference Result 350 states and 477 transitions. [2022-11-02 21:02:55,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:02:55,587 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2022-11-02 21:02:55,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:55,588 INFO L225 Difference]: With dead ends: 350 [2022-11-02 21:02:55,588 INFO L226 Difference]: Without dead ends: 237 [2022-11-02 21:02:55,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:02:55,589 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 19 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 37 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:55,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 535 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 37 Unchecked, 0.1s Time] [2022-11-02 21:02:55,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2022-11-02 21:02:55,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2022-11-02 21:02:55,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 236 states have (on average 1.3305084745762712) internal successors, (314), 236 states have internal predecessors, (314), 0 states have call successors, (0), 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 21:02:55,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 314 transitions. [2022-11-02 21:02:55,597 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 314 transitions. Word has length 116 [2022-11-02 21:02:55,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:55,597 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 314 transitions. [2022-11-02 21:02:55,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 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 21:02:55,598 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 314 transitions. [2022-11-02 21:02:55,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-02 21:02:55,598 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:55,599 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:02:55,629 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-02 21:02:55,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:02:55,823 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:02:55,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:55,823 INFO L85 PathProgramCache]: Analyzing trace with hash -2114299813, now seen corresponding path program 1 times [2022-11-02 21:02:55,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:02:55,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1245052256] [2022-11-02 21:02:55,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:55,824 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:02:55,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:02:55,825 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:02:55,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-02 21:02:56,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:56,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 1281 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 21:02:56,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:02:57,166 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 21:02:57,166 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:02:57,166 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:02:57,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1245052256] [2022-11-02 21:02:57,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1245052256] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:57,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:57,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:02:57,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757287619] [2022-11-02 21:02:57,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:57,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:02:57,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:02:57,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:02:57,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:02:57,169 INFO L87 Difference]: Start difference. First operand 237 states and 314 transitions. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 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 21:02:57,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:57,337 INFO L93 Difference]: Finished difference Result 350 states and 476 transitions. [2022-11-02 21:02:57,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:02:57,338 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2022-11-02 21:02:57,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:57,339 INFO L225 Difference]: With dead ends: 350 [2022-11-02 21:02:57,339 INFO L226 Difference]: Without dead ends: 237 [2022-11-02 21:02:57,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 113 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 21:02:57,339 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 68 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:57,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 257 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:02:57,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2022-11-02 21:02:57,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2022-11-02 21:02:57,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 236 states have (on average 1.326271186440678) internal successors, (313), 236 states have internal predecessors, (313), 0 states have call successors, (0), 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 21:02:57,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 313 transitions. [2022-11-02 21:02:57,349 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 313 transitions. Word has length 116 [2022-11-02 21:02:57,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:57,349 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 313 transitions. [2022-11-02 21:02:57,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 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 21:02:57,350 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 313 transitions. [2022-11-02 21:02:57,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-02 21:02:57,351 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:57,351 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:02:57,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-02 21:02:57,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:02:57,575 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:02:57,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:57,575 INFO L85 PathProgramCache]: Analyzing trace with hash -191071779, now seen corresponding path program 1 times [2022-11-02 21:02:57,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:02:57,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1923477791] [2022-11-02 21:02:57,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:57,576 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:02:57,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:02:57,577 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:02:57,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-02 21:02:58,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:58,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 1281 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 21:02:58,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:02:58,646 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 21:02:58,646 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:02:58,646 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:02:58,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1923477791] [2022-11-02 21:02:58,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1923477791] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:58,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:58,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:02:58,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137778406] [2022-11-02 21:02:58,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:58,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:02:58,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:02:58,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:02:58,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:02:58,648 INFO L87 Difference]: Start difference. First operand 237 states and 313 transitions. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 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 21:02:59,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:59,081 INFO L93 Difference]: Finished difference Result 552 states and 759 transitions. [2022-11-02 21:02:59,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:02:59,083 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2022-11-02 21:02:59,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:59,084 INFO L225 Difference]: With dead ends: 552 [2022-11-02 21:02:59,084 INFO L226 Difference]: Without dead ends: 439 [2022-11-02 21:02:59,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:02:59,085 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 399 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 750 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:59,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [399 Valid, 750 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:02:59,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2022-11-02 21:02:59,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 275. [2022-11-02 21:02:59,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 274 states have (on average 1.3357664233576643) internal successors, (366), 274 states have internal predecessors, (366), 0 states have call successors, (0), 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 21:02:59,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 366 transitions. [2022-11-02 21:02:59,096 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 366 transitions. Word has length 116 [2022-11-02 21:02:59,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:59,096 INFO L495 AbstractCegarLoop]: Abstraction has 275 states and 366 transitions. [2022-11-02 21:02:59,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 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 21:02:59,097 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 366 transitions. [2022-11-02 21:02:59,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-02 21:02:59,097 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:59,098 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:02:59,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-02 21:02:59,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:02:59,311 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:02:59,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:59,312 INFO L85 PathProgramCache]: Analyzing trace with hash 231630047, now seen corresponding path program 1 times [2022-11-02 21:02:59,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:02:59,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [929749519] [2022-11-02 21:02:59,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:59,314 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:02:59,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:02:59,315 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:02:59,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-02 21:03:00,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:00,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 1281 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 21:03:00,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:00,425 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 21:03:00,425 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:03:00,425 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:03:00,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [929749519] [2022-11-02 21:03:00,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [929749519] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:00,426 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:00,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:03:00,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367038400] [2022-11-02 21:03:00,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:00,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:03:00,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:03:00,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:03:00,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:03:00,428 INFO L87 Difference]: Start difference. First operand 275 states and 366 transitions. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 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 21:03:00,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:00,901 INFO L93 Difference]: Finished difference Result 552 states and 758 transitions. [2022-11-02 21:03:00,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:03:00,902 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2022-11-02 21:03:00,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:00,904 INFO L225 Difference]: With dead ends: 552 [2022-11-02 21:03:00,904 INFO L226 Difference]: Without dead ends: 439 [2022-11-02 21:03:00,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:03:00,905 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 387 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:00,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 741 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:03:00,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2022-11-02 21:03:00,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 279. [2022-11-02 21:03:00,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 278 states have (on average 1.3345323741007193) internal successors, (371), 278 states have internal predecessors, (371), 0 states have call successors, (0), 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 21:03:00,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 371 transitions. [2022-11-02 21:03:00,915 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 371 transitions. Word has length 116 [2022-11-02 21:03:00,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:00,915 INFO L495 AbstractCegarLoop]: Abstraction has 279 states and 371 transitions. [2022-11-02 21:03:00,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 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 21:03:00,916 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 371 transitions. [2022-11-02 21:03:00,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-02 21:03:00,917 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:00,917 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:00,945 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2022-11-02 21:03:01,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:03:01,131 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:01,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:01,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1356717855, now seen corresponding path program 1 times [2022-11-02 21:03:01,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:03:01,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [233518077] [2022-11-02 21:03:01,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:01,132 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:03:01,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:03:01,133 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:03:01,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-02 21:03:01,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:01,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 1281 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 21:03:01,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:02,659 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 21:03:02,659 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:03:03,577 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 21:03:03,578 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:03:03,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [233518077] [2022-11-02 21:03:03,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [233518077] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:03:03,578 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:03:03,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-02 21:03:03,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379104679] [2022-11-02 21:03:03,578 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:03:03,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-02 21:03:03,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:03:03,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-02 21:03:03,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:03:03,580 INFO L87 Difference]: Start difference. First operand 279 states and 371 transitions. Second operand has 16 states, 16 states have (on average 14.0) internal successors, (224), 16 states have internal predecessors, (224), 0 states have call successors, (0), 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 21:03:04,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:04,099 INFO L93 Difference]: Finished difference Result 513 states and 692 transitions. [2022-11-02 21:03:04,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:03:04,100 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 14.0) internal successors, (224), 16 states have internal predecessors, (224), 0 states have call successors, (0), 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 116 [2022-11-02 21:03:04,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:04,100 INFO L225 Difference]: With dead ends: 513 [2022-11-02 21:03:04,101 INFO L226 Difference]: Without dead ends: 400 [2022-11-02 21:03:04,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 216 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:03:04,102 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 254 mSDsluCounter, 1162 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 1305 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 66 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:04,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 1305 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 66 Unchecked, 0.4s Time] [2022-11-02 21:03:04,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2022-11-02 21:03:04,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 400. [2022-11-02 21:03:04,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 399 states have (on average 1.3283208020050126) internal successors, (530), 399 states have internal predecessors, (530), 0 states have call successors, (0), 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 21:03:04,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 530 transitions. [2022-11-02 21:03:04,114 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 530 transitions. Word has length 116 [2022-11-02 21:03:04,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:04,114 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 530 transitions. [2022-11-02 21:03:04,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 14.0) internal successors, (224), 16 states have internal predecessors, (224), 0 states have call successors, (0), 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 21:03:04,115 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 530 transitions. [2022-11-02 21:03:04,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-02 21:03:04,116 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:04,116 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:04,150 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-11-02 21:03:04,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:03:04,339 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:04,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:04,339 INFO L85 PathProgramCache]: Analyzing trace with hash 2128902815, now seen corresponding path program 1 times [2022-11-02 21:03:04,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:03:04,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [865253430] [2022-11-02 21:03:04,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:04,340 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:03:04,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:03:04,341 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:03:04,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-02 21:03:05,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:05,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 1281 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 21:03:05,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:05,858 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 21:03:05,858 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:03:08,910 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 21:03:08,911 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:03:08,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [865253430] [2022-11-02 21:03:08,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [865253430] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:03:08,911 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:03:08,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-02 21:03:08,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116427719] [2022-11-02 21:03:08,912 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:03:08,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-02 21:03:08,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:03:08,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-02 21:03:08,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=190, Unknown=1, NotChecked=0, Total=240 [2022-11-02 21:03:08,914 INFO L87 Difference]: Start difference. First operand 400 states and 530 transitions. Second operand has 16 states, 16 states have (on average 14.125) internal successors, (226), 16 states have internal predecessors, (226), 0 states have call successors, (0), 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 21:03:09,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:09,373 INFO L93 Difference]: Finished difference Result 780 states and 1043 transitions. [2022-11-02 21:03:09,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 21:03:09,374 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 14.125) internal successors, (226), 16 states have internal predecessors, (226), 0 states have call successors, (0), 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 116 [2022-11-02 21:03:09,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:09,376 INFO L225 Difference]: With dead ends: 780 [2022-11-02 21:03:09,376 INFO L226 Difference]: Without dead ends: 667 [2022-11-02 21:03:09,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 216 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=76, Invalid=303, Unknown=1, NotChecked=0, Total=380 [2022-11-02 21:03:09,377 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 334 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 1331 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:09,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 1331 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 39 Unchecked, 0.2s Time] [2022-11-02 21:03:09,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2022-11-02 21:03:09,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 630. [2022-11-02 21:03:09,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 630 states, 629 states have (on average 1.3179650238473768) internal successors, (829), 629 states have internal predecessors, (829), 0 states have call successors, (0), 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 21:03:09,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 829 transitions. [2022-11-02 21:03:09,398 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 829 transitions. Word has length 116 [2022-11-02 21:03:09,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:09,399 INFO L495 AbstractCegarLoop]: Abstraction has 630 states and 829 transitions. [2022-11-02 21:03:09,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 14.125) internal successors, (226), 16 states have internal predecessors, (226), 0 states have call successors, (0), 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 21:03:09,399 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 829 transitions. [2022-11-02 21:03:09,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-02 21:03:09,401 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:09,401 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:09,437 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (29)] Ended with exit code 0 [2022-11-02 21:03:09,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:03:09,623 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:09,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:09,623 INFO L85 PathProgramCache]: Analyzing trace with hash -2108806179, now seen corresponding path program 1 times [2022-11-02 21:03:09,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:03:09,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1367431083] [2022-11-02 21:03:09,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:09,624 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:03:09,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:03:09,625 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:03:09,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-02 21:03:10,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:10,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 1281 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 21:03:10,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:11,203 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 21:03:11,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:03:12,069 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 21:03:12,069 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:03:12,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1367431083] [2022-11-02 21:03:12,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1367431083] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:03:12,070 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:03:12,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-02 21:03:12,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8379866] [2022-11-02 21:03:12,070 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:03:12,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-02 21:03:12,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:03:12,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-02 21:03:12,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:03:12,072 INFO L87 Difference]: Start difference. First operand 630 states and 829 transitions. Second operand has 16 states, 16 states have (on average 14.25) internal successors, (228), 16 states have internal predecessors, (228), 0 states have call successors, (0), 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 21:03:12,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:12,565 INFO L93 Difference]: Finished difference Result 1176 states and 1557 transitions. [2022-11-02 21:03:12,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 21:03:12,566 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 14.25) internal successors, (228), 16 states have internal predecessors, (228), 0 states have call successors, (0), 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 116 [2022-11-02 21:03:12,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:12,572 INFO L225 Difference]: With dead ends: 1176 [2022-11-02 21:03:12,572 INFO L226 Difference]: Without dead ends: 1063 [2022-11-02 21:03:12,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 216 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:03:12,573 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 297 mSDsluCounter, 1138 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 1285 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 69 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:12,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 1285 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 69 Unchecked, 0.4s Time] [2022-11-02 21:03:12,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1063 states. [2022-11-02 21:03:12,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1063 to 1062. [2022-11-02 21:03:12,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1062 states, 1061 states have (on average 1.3129123468426014) internal successors, (1393), 1061 states have internal predecessors, (1393), 0 states have call successors, (0), 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 21:03:12,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1062 states to 1062 states and 1393 transitions. [2022-11-02 21:03:12,618 INFO L78 Accepts]: Start accepts. Automaton has 1062 states and 1393 transitions. Word has length 116 [2022-11-02 21:03:12,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:12,618 INFO L495 AbstractCegarLoop]: Abstraction has 1062 states and 1393 transitions. [2022-11-02 21:03:12,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 14.25) internal successors, (228), 16 states have internal predecessors, (228), 0 states have call successors, (0), 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 21:03:12,619 INFO L276 IsEmpty]: Start isEmpty. Operand 1062 states and 1393 transitions. [2022-11-02 21:03:12,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-02 21:03:12,621 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:12,621 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:12,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-11-02 21:03:12,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:03:12,834 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:12,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:12,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1218810463, now seen corresponding path program 1 times [2022-11-02 21:03:12,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:03:12,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [13391215] [2022-11-02 21:03:12,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:12,836 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:03:12,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:03:12,837 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:03:12,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-02 21:03:13,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:13,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 1281 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-02 21:03:13,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:15,391 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 21:03:15,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:03:21,694 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 21:03:21,694 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:03:21,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [13391215] [2022-11-02 21:03:21,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [13391215] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:03:21,694 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:03:21,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-02 21:03:21,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033297081] [2022-11-02 21:03:21,694 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:03:21,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 21:03:21,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:03:21,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 21:03:21,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=230, Unknown=1, NotChecked=0, Total=306 [2022-11-02 21:03:21,696 INFO L87 Difference]: Start difference. First operand 1062 states and 1393 transitions. Second operand has 18 states, 18 states have (on average 12.777777777777779) internal successors, (230), 18 states have internal predecessors, (230), 0 states have call successors, (0), 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 21:03:21,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:21,893 INFO L93 Difference]: Finished difference Result 1670 states and 2211 transitions. [2022-11-02 21:03:21,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 21:03:21,894 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 12.777777777777779) internal successors, (230), 18 states have internal predecessors, (230), 0 states have call successors, (0), 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 116 [2022-11-02 21:03:21,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:21,897 INFO L225 Difference]: With dead ends: 1670 [2022-11-02 21:03:21,897 INFO L226 Difference]: Without dead ends: 1668 [2022-11-02 21:03:21,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=91, Invalid=288, Unknown=1, NotChecked=0, Total=380 [2022-11-02 21:03:21,898 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 347 mSDsluCounter, 1126 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 1272 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 40 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:21,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 1272 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 40 Unchecked, 0.0s Time] [2022-11-02 21:03:21,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1668 states. [2022-11-02 21:03:21,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1668 to 1654. [2022-11-02 21:03:21,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1654 states, 1653 states have (on average 1.326073805202662) internal successors, (2192), 1653 states have internal predecessors, (2192), 0 states have call successors, (0), 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 21:03:21,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1654 states to 1654 states and 2192 transitions. [2022-11-02 21:03:21,964 INFO L78 Accepts]: Start accepts. Automaton has 1654 states and 2192 transitions. Word has length 116 [2022-11-02 21:03:21,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:21,964 INFO L495 AbstractCegarLoop]: Abstraction has 1654 states and 2192 transitions. [2022-11-02 21:03:21,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 12.777777777777779) internal successors, (230), 18 states have internal predecessors, (230), 0 states have call successors, (0), 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 21:03:21,965 INFO L276 IsEmpty]: Start isEmpty. Operand 1654 states and 2192 transitions. [2022-11-02 21:03:21,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-02 21:03:21,968 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:21,968 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:22,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-11-02 21:03:22,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:03:22,191 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:22,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:22,191 INFO L85 PathProgramCache]: Analyzing trace with hash 865722081, now seen corresponding path program 1 times [2022-11-02 21:03:22,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:03:22,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2122996117] [2022-11-02 21:03:22,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:22,192 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:03:22,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:03:22,193 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:03:22,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-02 21:03:22,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:23,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 1281 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-02 21:03:23,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:24,468 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 21:03:24,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:03:31,598 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 21:03:31,599 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:03:31,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2122996117] [2022-11-02 21:03:31,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2122996117] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:03:31,599 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:03:31,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-02 21:03:31,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073222391] [2022-11-02 21:03:31,600 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:03:31,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 21:03:31,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:03:31,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 21:03:31,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=230, Unknown=1, NotChecked=0, Total=306 [2022-11-02 21:03:31,601 INFO L87 Difference]: Start difference. First operand 1654 states and 2192 transitions. Second operand has 18 states, 18 states have (on average 12.777777777777779) internal successors, (230), 18 states have internal predecessors, (230), 0 states have call successors, (0), 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 21:03:32,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:32,037 INFO L93 Difference]: Finished difference Result 2477 states and 3296 transitions. [2022-11-02 21:03:32,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 21:03:32,038 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 12.777777777777779) internal successors, (230), 18 states have internal predecessors, (230), 0 states have call successors, (0), 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 116 [2022-11-02 21:03:32,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:32,045 INFO L225 Difference]: With dead ends: 2477 [2022-11-02 21:03:32,045 INFO L226 Difference]: Without dead ends: 2475 [2022-11-02 21:03:32,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=91, Invalid=288, Unknown=1, NotChecked=0, Total=380 [2022-11-02 21:03:32,047 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 372 mSDsluCounter, 2193 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 2450 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 45 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:32,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 2450 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 45 Unchecked, 0.2s Time] [2022-11-02 21:03:32,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2475 states. [2022-11-02 21:03:32,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2475 to 2438. [2022-11-02 21:03:32,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2438 states, 2437 states have (on average 1.3319655313910546) internal successors, (3246), 2437 states have internal predecessors, (3246), 0 states have call successors, (0), 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 21:03:32,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2438 states to 2438 states and 3246 transitions. [2022-11-02 21:03:32,181 INFO L78 Accepts]: Start accepts. Automaton has 2438 states and 3246 transitions. Word has length 116 [2022-11-02 21:03:32,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:32,181 INFO L495 AbstractCegarLoop]: Abstraction has 2438 states and 3246 transitions. [2022-11-02 21:03:32,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 12.777777777777779) internal successors, (230), 18 states have internal predecessors, (230), 0 states have call successors, (0), 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 21:03:32,182 INFO L276 IsEmpty]: Start isEmpty. Operand 2438 states and 3246 transitions. [2022-11-02 21:03:32,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-02 21:03:32,186 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:32,186 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:32,222 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-11-02 21:03:32,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:03:32,411 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:32,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:32,411 INFO L85 PathProgramCache]: Analyzing trace with hash -939716253, now seen corresponding path program 1 times [2022-11-02 21:03:32,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:03:32,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [297118715] [2022-11-02 21:03:32,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:32,412 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:03:32,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:03:32,414 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:03:32,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-11-02 21:03:33,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:33,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 1281 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-02 21:03:33,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:34,671 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 21:03:34,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:03:49,677 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 21:03:49,677 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:03:49,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [297118715] [2022-11-02 21:03:49,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [297118715] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:03:49,678 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:03:49,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2022-11-02 21:03:49,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965694310] [2022-11-02 21:03:49,678 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:03:49,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-02 21:03:49,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:03:49,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-02 21:03:49,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=287, Unknown=6, NotChecked=0, Total=380 [2022-11-02 21:03:49,679 INFO L87 Difference]: Start difference. First operand 2438 states and 3246 transitions. Second operand has 20 states, 20 states have (on average 11.5) internal successors, (230), 20 states have internal predecessors, (230), 0 states have call successors, (0), 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 21:03:49,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:49,979 INFO L93 Difference]: Finished difference Result 4466 states and 5947 transitions. [2022-11-02 21:03:49,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 21:03:49,979 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 11.5) internal successors, (230), 20 states have internal predecessors, (230), 0 states have call successors, (0), 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 116 [2022-11-02 21:03:49,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:49,989 INFO L225 Difference]: With dead ends: 4466 [2022-11-02 21:03:49,989 INFO L226 Difference]: Without dead ends: 4464 [2022-11-02 21:03:49,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 13.9s TimeCoverageRelationStatistics Valid=103, Invalid=353, Unknown=6, NotChecked=0, Total=462 [2022-11-02 21:03:49,991 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 583 mSDsluCounter, 1724 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 1870 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 51 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:49,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [583 Valid, 1870 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 51 Unchecked, 0.0s Time] [2022-11-02 21:03:49,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4464 states. [2022-11-02 21:03:50,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4464 to 4450. [2022-11-02 21:03:50,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4450 states, 4449 states have (on average 1.3324342548887391) internal successors, (5928), 4449 states have internal predecessors, (5928), 0 states have call successors, (0), 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 21:03:50,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4450 states to 4450 states and 5928 transitions. [2022-11-02 21:03:50,221 INFO L78 Accepts]: Start accepts. Automaton has 4450 states and 5928 transitions. Word has length 116 [2022-11-02 21:03:50,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:50,222 INFO L495 AbstractCegarLoop]: Abstraction has 4450 states and 5928 transitions. [2022-11-02 21:03:50,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 11.5) internal successors, (230), 20 states have internal predecessors, (230), 0 states have call successors, (0), 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 21:03:50,222 INFO L276 IsEmpty]: Start isEmpty. Operand 4450 states and 5928 transitions. [2022-11-02 21:03:50,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-02 21:03:50,229 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:50,230 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:50,269 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-11-02 21:03:50,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:03:50,443 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:50,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:50,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1203291745, now seen corresponding path program 1 times [2022-11-02 21:03:50,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:03:50,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [628666806] [2022-11-02 21:03:50,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:50,445 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:03:50,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:03:50,446 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:03:50,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-02 21:03:51,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:51,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 1281 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:03:51,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:51,489 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 21:03:51,490 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:03:51,490 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:03:51,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [628666806] [2022-11-02 21:03:51,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [628666806] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:51,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:51,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:03:51,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540287751] [2022-11-02 21:03:51,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:51,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:03:51,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:03:51,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:03:51,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:03:51,492 INFO L87 Difference]: Start difference. First operand 4450 states and 5928 transitions. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 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 21:03:52,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:52,070 INFO L93 Difference]: Finished difference Result 6023 states and 8002 transitions. [2022-11-02 21:03:52,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:03:52,071 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2022-11-02 21:03:52,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:52,079 INFO L225 Difference]: With dead ends: 6023 [2022-11-02 21:03:52,079 INFO L226 Difference]: Without dead ends: 5767 [2022-11-02 21:03:52,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:03:52,082 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 102 mSDsluCounter, 951 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 1180 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 32 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:52,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 1180 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 32 Unchecked, 0.3s Time] [2022-11-02 21:03:52,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5767 states. [2022-11-02 21:03:52,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5767 to 4450. [2022-11-02 21:03:52,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4450 states, 4449 states have (on average 1.3306360979995504) internal successors, (5920), 4449 states have internal predecessors, (5920), 0 states have call successors, (0), 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 21:03:52,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4450 states to 4450 states and 5920 transitions. [2022-11-02 21:03:52,325 INFO L78 Accepts]: Start accepts. Automaton has 4450 states and 5920 transitions. Word has length 116 [2022-11-02 21:03:52,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:52,326 INFO L495 AbstractCegarLoop]: Abstraction has 4450 states and 5920 transitions. [2022-11-02 21:03:52,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 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 21:03:52,326 INFO L276 IsEmpty]: Start isEmpty. Operand 4450 states and 5920 transitions. [2022-11-02 21:03:52,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-02 21:03:52,333 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:52,334 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:03:52,368 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (34)] Ended with exit code 0 [2022-11-02 21:03:52,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:03:52,547 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:52,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:52,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1343840355, now seen corresponding path program 1 times [2022-11-02 21:03:52,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:03:52,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [686277128] [2022-11-02 21:03:52,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:52,548 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:03:52,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:03:52,549 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:03:52,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-11-02 21:03:53,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:53,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 1281 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-02 21:03:53,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:54,750 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 21:03:54,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:04:13,100 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 21:04:13,101 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:04:13,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [686277128] [2022-11-02 21:04:13,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [686277128] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:04:13,101 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:04:13,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2022-11-02 21:04:13,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867074716] [2022-11-02 21:04:13,101 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:04:13,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-02 21:04:13,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:04:13,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-02 21:04:13,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=285, Unknown=8, NotChecked=0, Total=380 [2022-11-02 21:04:13,103 INFO L87 Difference]: Start difference. First operand 4450 states and 5920 transitions. Second operand has 20 states, 20 states have (on average 11.5) internal successors, (230), 20 states have internal predecessors, (230), 0 states have call successors, (0), 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 21:04:13,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:13,398 INFO L93 Difference]: Finished difference Result 5058 states and 6730 transitions. [2022-11-02 21:04:13,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 21:04:13,398 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 11.5) internal successors, (230), 20 states have internal predecessors, (230), 0 states have call successors, (0), 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 116 [2022-11-02 21:04:13,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:13,412 INFO L225 Difference]: With dead ends: 5058 [2022-11-02 21:04:13,413 INFO L226 Difference]: Without dead ends: 5056 [2022-11-02 21:04:13,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 17.3s TimeCoverageRelationStatistics Valid=103, Invalid=351, Unknown=8, NotChecked=0, Total=462 [2022-11-02 21:04:13,414 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 521 mSDsluCounter, 1432 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 521 SdHoareTripleChecker+Valid, 1579 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 50 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:13,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [521 Valid, 1579 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 50 Unchecked, 0.0s Time] [2022-11-02 21:04:13,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5056 states. [2022-11-02 21:04:13,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5056 to 5042. [2022-11-02 21:04:13,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5042 states, 5041 states have (on average 1.3312834755008927) internal successors, (6711), 5041 states have internal predecessors, (6711), 0 states have call successors, (0), 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 21:04:13,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5042 states to 5042 states and 6711 transitions. [2022-11-02 21:04:13,614 INFO L78 Accepts]: Start accepts. Automaton has 5042 states and 6711 transitions. Word has length 116 [2022-11-02 21:04:13,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:13,615 INFO L495 AbstractCegarLoop]: Abstraction has 5042 states and 6711 transitions. [2022-11-02 21:04:13,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 11.5) internal successors, (230), 20 states have internal predecessors, (230), 0 states have call successors, (0), 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 21:04:13,615 INFO L276 IsEmpty]: Start isEmpty. Operand 5042 states and 6711 transitions. [2022-11-02 21:04:13,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-02 21:04:13,623 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:13,623 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:13,664 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (35)] Ended with exit code 0 [2022-11-02 21:04:13,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:04:13,847 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:13,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:13,847 INFO L85 PathProgramCache]: Analyzing trace with hash 990751973, now seen corresponding path program 1 times [2022-11-02 21:04:13,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:04:13,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1178999574] [2022-11-02 21:04:13,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:13,848 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:04:13,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:04:13,849 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:04:13,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-11-02 21:04:14,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:14,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 1281 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-02 21:04:14,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:16,005 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 21:04:16,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:04:29,115 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 21:04:29,115 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:04:29,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1178999574] [2022-11-02 21:04:29,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1178999574] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:04:29,116 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:04:29,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2022-11-02 21:04:29,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195587870] [2022-11-02 21:04:29,116 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:04:29,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-02 21:04:29,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:04:29,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-02 21:04:29,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=288, Unknown=5, NotChecked=0, Total=380 [2022-11-02 21:04:29,118 INFO L87 Difference]: Start difference. First operand 5042 states and 6711 transitions. Second operand has 20 states, 20 states have (on average 11.5) internal successors, (230), 20 states have internal predecessors, (230), 0 states have call successors, (0), 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 21:04:29,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:29,630 INFO L93 Difference]: Finished difference Result 9420 states and 12534 transitions. [2022-11-02 21:04:29,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 21:04:29,631 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 11.5) internal successors, (230), 20 states have internal predecessors, (230), 0 states have call successors, (0), 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 116 [2022-11-02 21:04:29,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:29,646 INFO L225 Difference]: With dead ends: 9420 [2022-11-02 21:04:29,646 INFO L226 Difference]: Without dead ends: 9418 [2022-11-02 21:04:29,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=103, Invalid=354, Unknown=5, NotChecked=0, Total=462 [2022-11-02 21:04:29,648 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 467 mSDsluCounter, 2357 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 467 SdHoareTripleChecker+Valid, 2534 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 49 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:29,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [467 Valid, 2534 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 49 Unchecked, 0.0s Time] [2022-11-02 21:04:29,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9418 states. [2022-11-02 21:04:30,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9418 to 9362. [2022-11-02 21:04:30,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9362 states, 9361 states have (on average 1.3305202435637218) internal successors, (12455), 9361 states have internal predecessors, (12455), 0 states have call successors, (0), 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 21:04:30,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9362 states to 9362 states and 12455 transitions. [2022-11-02 21:04:30,047 INFO L78 Accepts]: Start accepts. Automaton has 9362 states and 12455 transitions. Word has length 116 [2022-11-02 21:04:30,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:30,048 INFO L495 AbstractCegarLoop]: Abstraction has 9362 states and 12455 transitions. [2022-11-02 21:04:30,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 11.5) internal successors, (230), 20 states have internal predecessors, (230), 0 states have call successors, (0), 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 21:04:30,048 INFO L276 IsEmpty]: Start isEmpty. Operand 9362 states and 12455 transitions. [2022-11-02 21:04:30,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-02 21:04:30,085 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:30,085 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:30,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:30,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:04:30,293 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:30,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:30,293 INFO L85 PathProgramCache]: Analyzing trace with hash -814686361, now seen corresponding path program 1 times [2022-11-02 21:04:30,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:04:30,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [446785875] [2022-11-02 21:04:30,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:30,295 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:04:30,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:04:30,296 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:04:30,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-11-02 21:04:31,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:31,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 1281 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-02 21:04:31,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:32,464 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:32,464 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:04:53,751 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 21:04:53,752 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:04:53,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [446785875] [2022-11-02 21:04:53,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [446785875] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:04:53,752 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:04:53,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2022-11-02 21:04:53,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487761370] [2022-11-02 21:04:53,753 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:04:53,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-02 21:04:53,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:04:53,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-02 21:04:53,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=293, Unknown=8, NotChecked=0, Total=380 [2022-11-02 21:04:53,754 INFO L87 Difference]: Start difference. First operand 9362 states and 12455 transitions. Second operand has 20 states, 20 states have (on average 11.5) internal successors, (230), 20 states have internal predecessors, (230), 0 states have call successors, (0), 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 21:04:54,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:54,436 INFO L93 Difference]: Finished difference Result 10834 states and 14429 transitions. [2022-11-02 21:04:54,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 21:04:54,441 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 11.5) internal successors, (230), 20 states have internal predecessors, (230), 0 states have call successors, (0), 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 116 [2022-11-02 21:04:54,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:54,455 INFO L225 Difference]: With dead ends: 10834 [2022-11-02 21:04:54,455 INFO L226 Difference]: Without dead ends: 10832 [2022-11-02 21:04:54,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 20.1s TimeCoverageRelationStatistics Valid=101, Invalid=397, Unknown=8, NotChecked=0, Total=506 [2022-11-02 21:04:54,458 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 606 mSDsluCounter, 1654 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 606 SdHoareTripleChecker+Valid, 1797 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:54,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [606 Valid, 1797 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 57 Unchecked, 0.1s Time] [2022-11-02 21:04:54,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10832 states. [2022-11-02 21:04:54,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10832 to 10818. [2022-11-02 21:04:54,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10818 states, 10817 states have (on average 1.332162337062032) internal successors, (14410), 10817 states have internal predecessors, (14410), 0 states have call successors, (0), 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 21:04:54,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10818 states to 10818 states and 14410 transitions. [2022-11-02 21:04:54,994 INFO L78 Accepts]: Start accepts. Automaton has 10818 states and 14410 transitions. Word has length 116 [2022-11-02 21:04:54,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:54,994 INFO L495 AbstractCegarLoop]: Abstraction has 10818 states and 14410 transitions. [2022-11-02 21:04:54,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 11.5) internal successors, (230), 20 states have internal predecessors, (230), 0 states have call successors, (0), 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 21:04:54,995 INFO L276 IsEmpty]: Start isEmpty. Operand 10818 states and 14410 transitions. [2022-11-02 21:04:55,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-02 21:04:55,007 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:55,007 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:55,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:55,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:04:55,223 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:04:55,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:55,223 INFO L85 PathProgramCache]: Analyzing trace with hash 936766565, now seen corresponding path program 1 times [2022-11-02 21:04:55,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:04:55,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [470425788] [2022-11-02 21:04:55,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:55,225 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:04:55,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:04:55,228 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:04:55,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-11-02 21:04:55,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:56,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 1281 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-02 21:04:56,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:57,104 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 21:04:57,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:04:57,978 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 21:04:57,978 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:04:57,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [470425788] [2022-11-02 21:04:57,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [470425788] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:04:57,978 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:04:57,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-02 21:04:57,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320587158] [2022-11-02 21:04:57,979 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:04:57,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-02 21:04:57,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:04:57,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-02 21:04:57,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:04:57,981 INFO L87 Difference]: Start difference. First operand 10818 states and 14410 transitions. Second operand has 16 states, 16 states have (on average 14.25) internal successors, (228), 16 states have internal predecessors, (228), 0 states have call successors, (0), 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 21:04:59,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:59,439 INFO L93 Difference]: Finished difference Result 12217 states and 16357 transitions. [2022-11-02 21:04:59,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 21:04:59,440 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 14.25) internal successors, (228), 16 states have internal predecessors, (228), 0 states have call successors, (0), 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 116 [2022-11-02 21:04:59,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:59,455 INFO L225 Difference]: With dead ends: 12217 [2022-11-02 21:04:59,455 INFO L226 Difference]: Without dead ends: 11474 [2022-11-02 21:04:59,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 216 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=127, Invalid=379, Unknown=0, NotChecked=0, Total=506 [2022-11-02 21:04:59,458 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 496 mSDsluCounter, 1368 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 1590 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 73 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:59,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 1590 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 138 Invalid, 0 Unknown, 73 Unchecked, 0.7s Time] [2022-11-02 21:04:59,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11474 states. [2022-11-02 21:05:00,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11474 to 9244. [2022-11-02 21:05:00,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9244 states, 9243 states have (on average 1.335929892891918) internal successors, (12348), 9243 states have internal predecessors, (12348), 0 states have call successors, (0), 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 21:05:00,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9244 states to 9244 states and 12348 transitions. [2022-11-02 21:05:00,108 INFO L78 Accepts]: Start accepts. Automaton has 9244 states and 12348 transitions. Word has length 116 [2022-11-02 21:05:00,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:00,108 INFO L495 AbstractCegarLoop]: Abstraction has 9244 states and 12348 transitions. [2022-11-02 21:05:00,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 14.25) internal successors, (228), 16 states have internal predecessors, (228), 0 states have call successors, (0), 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 21:05:00,109 INFO L276 IsEmpty]: Start isEmpty. Operand 9244 states and 12348 transitions. [2022-11-02 21:05:00,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-02 21:05:00,119 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:00,119 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:05:00,158 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:00,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:00,335 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:00,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:00,335 INFO L85 PathProgramCache]: Analyzing trace with hash -713944347, now seen corresponding path program 1 times [2022-11-02 21:05:00,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:00,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1467490324] [2022-11-02 21:05:00,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:00,337 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:00,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:00,338 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:00,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ff06a49-6137-46a3-b888-219e2f8652dd/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-11-02 21:05:01,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:01,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 1281 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-02 21:05:01,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:02,993 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 21:05:02,994 INFO L328 TraceCheckSpWp]: Computing backward predicates...