./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/byte_add_1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/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_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/byte_add_1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0ba3e3db8f44a5e9ad151b8422bee8deebac1dcf47a42cba5485daeafd8d8e80 --- 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 21:05:02,683 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:05:02,685 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:05:02,720 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:05:02,721 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:05:02,725 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:05:02,727 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:05:02,732 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:05:02,737 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:05:02,742 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:05:02,743 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:05:02,745 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:05:02,746 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:05:02,748 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:05:02,751 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:05:02,752 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:05:02,754 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:05:02,755 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:05:02,756 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:05:02,763 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:05:02,765 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:05:02,767 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:05:02,770 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:05:02,771 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:05:02,779 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:05:02,779 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:05:02,780 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:05:02,782 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:05:02,782 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:05:02,783 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:05:02,784 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:05:02,786 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:05:02,787 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:05:02,789 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:05:02,790 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:05:02,790 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:05:02,791 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:05:02,791 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:05:02,792 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:05:02,792 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:05:02,793 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:05:02,794 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 21:05:02,829 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:05:02,832 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:05:02,833 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:05:02,833 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:05:02,834 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:05:02,834 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:05:02,835 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:05:02,835 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:05:02,835 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:05:02,836 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:05:02,836 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 21:05:02,836 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:05:02,836 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 21:05:02,836 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:05:02,837 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:05:02,837 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:05:02,837 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:05:02,837 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 21:05:02,838 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:05:02,838 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:05:02,838 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:05:02,838 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:05:02,839 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:05:02,839 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:05:02,839 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:05:02,839 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:05:02,840 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:05:02,840 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:05:02,840 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:05:02,840 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 21:05:02,840 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:05:02,841 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:05:02,841 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:05:02,841 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_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0ba3e3db8f44a5e9ad151b8422bee8deebac1dcf47a42cba5485daeafd8d8e80 [2022-11-02 21:05:03,108 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:05:03,129 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:05:03,132 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:05:03,133 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:05:03,134 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:05:03,136 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/bitvector/byte_add_1-1.i [2022-11-02 21:05:03,201 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/data/4e05a9e92/2a770bb0e70c4ea0ab7ff5381544deb2/FLAG877c5b46f [2022-11-02 21:05:03,619 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:05:03,620 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/sv-benchmarks/c/bitvector/byte_add_1-1.i [2022-11-02 21:05:03,628 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/data/4e05a9e92/2a770bb0e70c4ea0ab7ff5381544deb2/FLAG877c5b46f [2022-11-02 21:05:04,005 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/data/4e05a9e92/2a770bb0e70c4ea0ab7ff5381544deb2 [2022-11-02 21:05:04,007 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:05:04,009 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:05:04,010 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:05:04,011 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:05:04,014 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:05:04,015 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:05:04" (1/1) ... [2022-11-02 21:05:04,016 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d202795 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:04, skipping insertion in model container [2022-11-02 21:05:04,016 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:05:04" (1/1) ... [2022-11-02 21:05:04,023 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:05:04,041 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:05:04,227 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_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/sv-benchmarks/c/bitvector/byte_add_1-1.i[1168,1181] [2022-11-02 21:05:04,264 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:05:04,272 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:05:04,285 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_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/sv-benchmarks/c/bitvector/byte_add_1-1.i[1168,1181] [2022-11-02 21:05:04,306 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:05:04,319 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:05:04,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:04 WrapperNode [2022-11-02 21:05:04,320 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:05:04,321 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:05:04,322 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:05:04,322 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:05:04,338 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:04" (1/1) ... [2022-11-02 21:05:04,345 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:04" (1/1) ... [2022-11-02 21:05:04,399 INFO L138 Inliner]: procedures = 16, calls = 8, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 123 [2022-11-02 21:05:04,400 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:05:04,401 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:05:04,401 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:05:04,401 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:05:04,411 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:04" (1/1) ... [2022-11-02 21:05:04,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:04" (1/1) ... [2022-11-02 21:05:04,421 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:04" (1/1) ... [2022-11-02 21:05:04,421 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:04" (1/1) ... [2022-11-02 21:05:04,450 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:04" (1/1) ... [2022-11-02 21:05:04,455 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:04" (1/1) ... [2022-11-02 21:05:04,459 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:04" (1/1) ... [2022-11-02 21:05:04,477 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:04" (1/1) ... [2022-11-02 21:05:04,484 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:05:04,485 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:05:04,486 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:05:04,492 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:05:04,493 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:04" (1/1) ... [2022-11-02 21:05:04,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:05:04,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:05:04,532 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:05:04,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:05:04,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 21:05:04,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 21:05:04,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:05:04,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:05:04,658 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:05:04,661 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:05:05,264 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:05:05,270 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:05:05,270 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-02 21:05:05,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:05:05 BoogieIcfgContainer [2022-11-02 21:05:05,273 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:05:05,274 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:05:05,275 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:05:05,278 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:05:05,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:05:04" (1/3) ... [2022-11-02 21:05:05,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@550aef5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:05:05, skipping insertion in model container [2022-11-02 21:05:05,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:04" (2/3) ... [2022-11-02 21:05:05,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@550aef5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:05:05, skipping insertion in model container [2022-11-02 21:05:05,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:05:05" (3/3) ... [2022-11-02 21:05:05,282 INFO L112 eAbstractionObserver]: Analyzing ICFG byte_add_1-1.i [2022-11-02 21:05:05,315 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:05:05,315 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 21:05:05,406 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:05:05,413 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;@7edf6dcc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:05:05,413 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 21:05:05,417 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 40 states have (on average 1.775) internal successors, (71), 41 states have internal predecessors, (71), 0 states have call successors, (0), 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 21:05:05,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-02 21:05:05,424 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:05,425 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:05:05,426 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:05,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:05,431 INFO L85 PathProgramCache]: Analyzing trace with hash 255061167, now seen corresponding path program 1 times [2022-11-02 21:05:05,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:05:05,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811989007] [2022-11-02 21:05:05,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:05,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:05:05,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:05,775 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 21:05:05,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:05:05,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811989007] [2022-11-02 21:05:05,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811989007] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:05,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:05,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:05:05,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518330341] [2022-11-02 21:05:05,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:05,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 21:05:05,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:05:05,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 21:05:05,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 21:05:05,821 INFO L87 Difference]: Start difference. First operand has 42 states, 40 states have (on average 1.775) internal successors, (71), 41 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 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 21:05:05,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:05,838 INFO L93 Difference]: Finished difference Result 57 states and 92 transitions. [2022-11-02 21:05:05,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 21:05:05,840 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2022-11-02 21:05:05,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:05,857 INFO L225 Difference]: With dead ends: 57 [2022-11-02 21:05:05,858 INFO L226 Difference]: Without dead ends: 38 [2022-11-02 21:05:05,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 21:05:05,869 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:05,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:05:05,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-02 21:05:05,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-11-02 21:05:05,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.7297297297297298) internal successors, (64), 37 states have internal predecessors, (64), 0 states have call successors, (0), 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 21:05:05,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 64 transitions. [2022-11-02 21:05:05,917 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 64 transitions. Word has length 12 [2022-11-02 21:05:05,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:05,918 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 64 transitions. [2022-11-02 21:05:05,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 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 21:05:05,919 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 64 transitions. [2022-11-02 21:05:05,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-02 21:05:05,921 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:05,921 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:05:05,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 21:05:05,921 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:05,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:05,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1803477009, now seen corresponding path program 1 times [2022-11-02 21:05:05,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:05:05,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923973771] [2022-11-02 21:05:05,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:05,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:05:06,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:06,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:06,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:05:06,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923973771] [2022-11-02 21:05:06,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923973771] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:06,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:06,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:05:06,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586644511] [2022-11-02 21:05:06,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:06,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:05:06,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:05:06,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:05:06,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:05:06,370 INFO L87 Difference]: Start difference. First operand 38 states and 64 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 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 21:05:06,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:06,544 INFO L93 Difference]: Finished difference Result 89 states and 156 transitions. [2022-11-02 21:05:06,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:05:06,545 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2022-11-02 21:05:06,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:06,546 INFO L225 Difference]: With dead ends: 89 [2022-11-02 21:05:06,546 INFO L226 Difference]: Without dead ends: 61 [2022-11-02 21:05:06,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:05:06,548 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 24 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:06,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 59 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:05:06,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-11-02 21:05:06,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2022-11-02 21:05:06,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.5344827586206897) internal successors, (89), 58 states have internal predecessors, (89), 0 states have call successors, (0), 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 21:05:06,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 89 transitions. [2022-11-02 21:05:06,556 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 89 transitions. Word has length 12 [2022-11-02 21:05:06,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:06,556 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 89 transitions. [2022-11-02 21:05:06,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 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 21:05:06,557 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 89 transitions. [2022-11-02 21:05:06,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-02 21:05:06,558 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:06,558 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:05:06,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 21:05:06,559 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:06,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:06,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1336656122, now seen corresponding path program 1 times [2022-11-02 21:05:06,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:05:06,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10189170] [2022-11-02 21:05:06,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:06,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:05:06,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:06,863 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:06,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:05:06,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10189170] [2022-11-02 21:05:06,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10189170] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:06,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:06,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:05:06,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510573412] [2022-11-02 21:05:06,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:06,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:05:06,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:05:06,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:05:06,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:05:06,866 INFO L87 Difference]: Start difference. First operand 59 states and 89 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 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 21:05:07,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:07,193 INFO L93 Difference]: Finished difference Result 146 states and 249 transitions. [2022-11-02 21:05:07,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:05:07,194 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2022-11-02 21:05:07,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:07,196 INFO L225 Difference]: With dead ends: 146 [2022-11-02 21:05:07,199 INFO L226 Difference]: Without dead ends: 118 [2022-11-02 21:05:07,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 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 21:05:07,202 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 92 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:07,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 73 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:05:07,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-11-02 21:05:07,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 82. [2022-11-02 21:05:07,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.5308641975308641) internal successors, (124), 81 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:07,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 124 transitions. [2022-11-02 21:05:07,227 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 124 transitions. Word has length 18 [2022-11-02 21:05:07,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:07,227 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 124 transitions. [2022-11-02 21:05:07,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 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 21:05:07,228 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 124 transitions. [2022-11-02 21:05:07,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-02 21:05:07,229 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:07,229 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] [2022-11-02 21:05:07,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 21:05:07,230 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:07,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:07,231 INFO L85 PathProgramCache]: Analyzing trace with hash 730584695, now seen corresponding path program 1 times [2022-11-02 21:05:07,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:05:07,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246576169] [2022-11-02 21:05:07,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:07,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:05:07,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:07,540 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-02 21:05:07,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:05:07,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246576169] [2022-11-02 21:05:07,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246576169] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:07,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:07,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:05:07,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46298577] [2022-11-02 21:05:07,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:07,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:05:07,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:05:07,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:05:07,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:05:07,544 INFO L87 Difference]: Start difference. First operand 82 states and 124 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 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 21:05:07,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:07,758 INFO L93 Difference]: Finished difference Result 236 states and 350 transitions. [2022-11-02 21:05:07,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:05:07,762 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 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 24 [2022-11-02 21:05:07,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:07,767 INFO L225 Difference]: With dead ends: 236 [2022-11-02 21:05:07,768 INFO L226 Difference]: Without dead ends: 167 [2022-11-02 21:05:07,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 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 21:05:07,774 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 85 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:07,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 156 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:05:07,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2022-11-02 21:05:07,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 90. [2022-11-02 21:05:07,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 1.4943820224719102) internal successors, (133), 89 states have internal predecessors, (133), 0 states have call successors, (0), 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 21:05:07,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 133 transitions. [2022-11-02 21:05:07,785 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 133 transitions. Word has length 24 [2022-11-02 21:05:07,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:07,785 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 133 transitions. [2022-11-02 21:05:07,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 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 21:05:07,786 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 133 transitions. [2022-11-02 21:05:07,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-02 21:05:07,787 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:07,787 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] [2022-11-02 21:05:07,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 21:05:07,787 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:07,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:07,788 INFO L85 PathProgramCache]: Analyzing trace with hash 175372872, now seen corresponding path program 1 times [2022-11-02 21:05:07,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:05:07,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745944525] [2022-11-02 21:05:07,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:07,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:05:07,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:08,000 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-02 21:05:08,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:05:08,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745944525] [2022-11-02 21:05:08,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745944525] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:08,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:08,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:05:08,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857876864] [2022-11-02 21:05:08,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:08,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:05:08,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:05:08,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:05:08,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:05:08,003 INFO L87 Difference]: Start difference. First operand 90 states and 133 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 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 21:05:08,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:08,206 INFO L93 Difference]: Finished difference Result 257 states and 376 transitions. [2022-11-02 21:05:08,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:05:08,207 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 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 25 [2022-11-02 21:05:08,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:08,208 INFO L225 Difference]: With dead ends: 257 [2022-11-02 21:05:08,208 INFO L226 Difference]: Without dead ends: 187 [2022-11-02 21:05:08,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 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 21:05:08,209 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 89 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:08,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 164 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:05:08,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2022-11-02 21:05:08,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 100. [2022-11-02 21:05:08,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.4747474747474747) internal successors, (146), 99 states have internal predecessors, (146), 0 states have call successors, (0), 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 21:05:08,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 146 transitions. [2022-11-02 21:05:08,231 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 146 transitions. Word has length 25 [2022-11-02 21:05:08,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:08,233 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 146 transitions. [2022-11-02 21:05:08,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 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 21:05:08,236 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 146 transitions. [2022-11-02 21:05:08,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-02 21:05:08,237 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:08,238 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] [2022-11-02 21:05:08,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 21:05:08,239 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:08,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:08,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1606169286, now seen corresponding path program 1 times [2022-11-02 21:05:08,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:05:08,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805942063] [2022-11-02 21:05:08,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:08,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:05:08,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:08,516 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-02 21:05:08,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:05:08,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805942063] [2022-11-02 21:05:08,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805942063] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:08,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:08,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:05:08,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123397285] [2022-11-02 21:05:08,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:08,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:05:08,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:05:08,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:05:08,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:05:08,519 INFO L87 Difference]: Start difference. First operand 100 states and 146 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 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 21:05:08,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:08,528 INFO L93 Difference]: Finished difference Result 173 states and 253 transitions. [2022-11-02 21:05:08,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:05:08,529 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 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 26 [2022-11-02 21:05:08,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:08,530 INFO L225 Difference]: With dead ends: 173 [2022-11-02 21:05:08,530 INFO L226 Difference]: Without dead ends: 86 [2022-11-02 21:05:08,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:05:08,535 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 57 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:08,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 58 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:05:08,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-11-02 21:05:08,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2022-11-02 21:05:08,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.4470588235294117) internal successors, (123), 85 states have internal predecessors, (123), 0 states have call successors, (0), 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 21:05:08,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 123 transitions. [2022-11-02 21:05:08,553 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 123 transitions. Word has length 26 [2022-11-02 21:05:08,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:08,553 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 123 transitions. [2022-11-02 21:05:08,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 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 21:05:08,554 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 123 transitions. [2022-11-02 21:05:08,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-02 21:05:08,554 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:08,555 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:05:08,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 21:05:08,555 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:08,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:08,555 INFO L85 PathProgramCache]: Analyzing trace with hash 767301132, now seen corresponding path program 1 times [2022-11-02 21:05:08,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:05:08,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817423101] [2022-11-02 21:05:08,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:08,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:05:08,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:08,736 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:05:08,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:05:08,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817423101] [2022-11-02 21:05:08,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817423101] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:08,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:08,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:05:08,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285498991] [2022-11-02 21:05:08,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:08,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:05:08,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:05:08,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:05:08,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:05:08,739 INFO L87 Difference]: Start difference. First operand 86 states and 123 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 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 21:05:08,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:08,751 INFO L93 Difference]: Finished difference Result 122 states and 173 transitions. [2022-11-02 21:05:08,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:05:08,752 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-02 21:05:08,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:08,753 INFO L225 Difference]: With dead ends: 122 [2022-11-02 21:05:08,753 INFO L226 Difference]: Without dead ends: 102 [2022-11-02 21:05:08,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:05:08,756 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 4 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:08,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 113 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:05:08,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-11-02 21:05:08,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2022-11-02 21:05:08,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.4356435643564356) internal successors, (145), 101 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:08,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 145 transitions. [2022-11-02 21:05:08,778 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 145 transitions. Word has length 32 [2022-11-02 21:05:08,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:08,779 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 145 transitions. [2022-11-02 21:05:08,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 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 21:05:08,779 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 145 transitions. [2022-11-02 21:05:08,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-02 21:05:08,784 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:08,784 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:05:08,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 21:05:08,785 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:08,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:08,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1226843574, now seen corresponding path program 1 times [2022-11-02 21:05:08,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:05:08,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389524907] [2022-11-02 21:05:08,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:08,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:05:08,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:09,009 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:05:09,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:05:09,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389524907] [2022-11-02 21:05:09,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389524907] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:09,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:09,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:05:09,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112864452] [2022-11-02 21:05:09,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:09,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:05:09,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:05:09,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:05:09,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:05:09,012 INFO L87 Difference]: Start difference. First operand 102 states and 145 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 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 21:05:09,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:09,251 INFO L93 Difference]: Finished difference Result 292 states and 446 transitions. [2022-11-02 21:05:09,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:05:09,252 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-02 21:05:09,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:09,253 INFO L225 Difference]: With dead ends: 292 [2022-11-02 21:05:09,253 INFO L226 Difference]: Without dead ends: 209 [2022-11-02 21:05:09,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 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 21:05:09,255 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 95 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:09,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 54 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:05:09,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2022-11-02 21:05:09,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 143. [2022-11-02 21:05:09,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.5) internal successors, (213), 142 states have internal predecessors, (213), 0 states have call successors, (0), 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 21:05:09,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 213 transitions. [2022-11-02 21:05:09,266 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 213 transitions. Word has length 32 [2022-11-02 21:05:09,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:09,266 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 213 transitions. [2022-11-02 21:05:09,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 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 21:05:09,267 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 213 transitions. [2022-11-02 21:05:09,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-02 21:05:09,268 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:09,268 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] [2022-11-02 21:05:09,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 21:05:09,269 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:09,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:09,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1448774913, now seen corresponding path program 1 times [2022-11-02 21:05:09,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:05:09,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132782493] [2022-11-02 21:05:09,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:09,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:05:09,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:09,620 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 21:05:09,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:05:09,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132782493] [2022-11-02 21:05:09,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132782493] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:05:09,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527317815] [2022-11-02 21:05:09,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:09,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:05:09,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:05:09,626 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:05:09,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 21:05:09,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:09,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:05:09,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:09,875 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 21:05:09,875 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:05:09,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [527317815] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:09,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:05:09,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-11-02 21:05:09,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758428624] [2022-11-02 21:05:09,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:09,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:05:09,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:05:09,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:05:09,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:05:09,878 INFO L87 Difference]: Start difference. First operand 143 states and 213 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 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 21:05:10,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:10,122 INFO L93 Difference]: Finished difference Result 326 states and 515 transitions. [2022-11-02 21:05:10,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:05:10,123 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 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 38 [2022-11-02 21:05:10,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:10,124 INFO L225 Difference]: With dead ends: 326 [2022-11-02 21:05:10,124 INFO L226 Difference]: Without dead ends: 202 [2022-11-02 21:05:10,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:05:10,126 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 36 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:10,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 93 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:05:10,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-11-02 21:05:10,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 183. [2022-11-02 21:05:10,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 182 states have (on average 1.4230769230769231) internal successors, (259), 182 states have internal predecessors, (259), 0 states have call successors, (0), 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 21:05:10,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 259 transitions. [2022-11-02 21:05:10,132 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 259 transitions. Word has length 38 [2022-11-02 21:05:10,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:10,132 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 259 transitions. [2022-11-02 21:05:10,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 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 21:05:10,133 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 259 transitions. [2022-11-02 21:05:10,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-02 21:05:10,133 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:10,133 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:05:10,175 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:10,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:05:10,358 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:10,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:10,359 INFO L85 PathProgramCache]: Analyzing trace with hash 882299696, now seen corresponding path program 1 times [2022-11-02 21:05:10,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:05:10,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290035058] [2022-11-02 21:05:10,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:10,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:05:10,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:10,736 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-02 21:05:10,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:05:10,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290035058] [2022-11-02 21:05:10,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290035058] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:05:10,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400797352] [2022-11-02 21:05:10,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:10,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:05:10,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:05:10,738 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:05:10,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 21:05:10,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:10,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:05:10,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:11,067 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-02 21:05:11,068 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:05:11,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400797352] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:11,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:05:11,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2022-11-02 21:05:11,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509325418] [2022-11-02 21:05:11,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:11,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:05:11,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:05:11,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:05:11,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:05:11,070 INFO L87 Difference]: Start difference. First operand 183 states and 259 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 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 21:05:11,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:11,164 INFO L93 Difference]: Finished difference Result 385 states and 555 transitions. [2022-11-02 21:05:11,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:05:11,164 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 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 44 [2022-11-02 21:05:11,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:11,166 INFO L225 Difference]: With dead ends: 385 [2022-11-02 21:05:11,166 INFO L226 Difference]: Without dead ends: 197 [2022-11-02 21:05:11,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 43 SyntacticMatches, 4 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:05:11,167 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 48 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:11,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 56 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:05:11,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-11-02 21:05:11,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 151. [2022-11-02 21:05:11,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 150 states have (on average 1.3533333333333333) internal successors, (203), 150 states have internal predecessors, (203), 0 states have call successors, (0), 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 21:05:11,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 203 transitions. [2022-11-02 21:05:11,180 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 203 transitions. Word has length 44 [2022-11-02 21:05:11,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:11,180 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 203 transitions. [2022-11-02 21:05:11,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 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 21:05:11,180 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 203 transitions. [2022-11-02 21:05:11,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-02 21:05:11,181 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:11,181 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 21:05:11,222 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:11,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-02 21:05:11,382 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:11,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:11,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1716436880, now seen corresponding path program 1 times [2022-11-02 21:05:11,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:05:11,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328911323] [2022-11-02 21:05:11,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:11,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:05:11,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:11,700 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-02 21:05:11,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:05:11,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328911323] [2022-11-02 21:05:11,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328911323] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:11,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:11,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:05:11,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262265278] [2022-11-02 21:05:11,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:11,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:05:11,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:05:11,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:05:11,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:05:11,706 INFO L87 Difference]: Start difference. First operand 151 states and 203 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 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 21:05:12,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:12,033 INFO L93 Difference]: Finished difference Result 575 states and 777 transitions. [2022-11-02 21:05:12,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:05:12,034 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 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 65 [2022-11-02 21:05:12,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:12,036 INFO L225 Difference]: With dead ends: 575 [2022-11-02 21:05:12,036 INFO L226 Difference]: Without dead ends: 443 [2022-11-02 21:05:12,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:05:12,037 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 135 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:12,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 200 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:05:12,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2022-11-02 21:05:12,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 151. [2022-11-02 21:05:12,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 150 states have (on average 1.3533333333333333) internal successors, (203), 150 states have internal predecessors, (203), 0 states have call successors, (0), 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 21:05:12,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 203 transitions. [2022-11-02 21:05:12,048 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 203 transitions. Word has length 65 [2022-11-02 21:05:12,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:12,048 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 203 transitions. [2022-11-02 21:05:12,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 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 21:05:12,049 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 203 transitions. [2022-11-02 21:05:12,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-02 21:05:12,049 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:12,049 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 21:05:12,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 21:05:12,050 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:12,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:12,050 INFO L85 PathProgramCache]: Analyzing trace with hash -865911640, now seen corresponding path program 1 times [2022-11-02 21:05:12,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:05:12,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424450748] [2022-11-02 21:05:12,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:12,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:05:12,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:12,535 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-11-02 21:05:12,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:05:12,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424450748] [2022-11-02 21:05:12,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424450748] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:12,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:12,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:05:12,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573892184] [2022-11-02 21:05:12,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:12,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:05:12,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:05:12,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:05:12,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:05:12,539 INFO L87 Difference]: Start difference. First operand 151 states and 203 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 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 21:05:12,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:12,651 INFO L93 Difference]: Finished difference Result 467 states and 635 transitions. [2022-11-02 21:05:12,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:05:12,651 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 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 66 [2022-11-02 21:05:12,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:12,654 INFO L225 Difference]: With dead ends: 467 [2022-11-02 21:05:12,654 INFO L226 Difference]: Without dead ends: 335 [2022-11-02 21:05:12,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:05:12,655 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 113 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:12,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 129 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:05:12,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2022-11-02 21:05:12,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 252. [2022-11-02 21:05:12,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 251 states have (on average 1.3745019920318724) internal successors, (345), 251 states have internal predecessors, (345), 0 states have call successors, (0), 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 21:05:12,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 345 transitions. [2022-11-02 21:05:12,670 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 345 transitions. Word has length 66 [2022-11-02 21:05:12,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:12,671 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 345 transitions. [2022-11-02 21:05:12,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 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 21:05:12,671 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 345 transitions. [2022-11-02 21:05:12,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-02 21:05:12,672 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:12,672 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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 21:05:12,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-02 21:05:12,672 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:12,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:12,673 INFO L85 PathProgramCache]: Analyzing trace with hash 511658858, now seen corresponding path program 1 times [2022-11-02 21:05:12,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:05:12,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388709751] [2022-11-02 21:05:12,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:12,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:05:12,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:13,042 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-02 21:05:13,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:05:13,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388709751] [2022-11-02 21:05:13,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388709751] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:13,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:13,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:05:13,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881935891] [2022-11-02 21:05:13,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:13,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:05:13,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:05:13,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:05:13,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:05:13,045 INFO L87 Difference]: Start difference. First operand 252 states and 345 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 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 21:05:13,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:13,525 INFO L93 Difference]: Finished difference Result 1245 states and 1702 transitions. [2022-11-02 21:05:13,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:05:13,525 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 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 66 [2022-11-02 21:05:13,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:13,529 INFO L225 Difference]: With dead ends: 1245 [2022-11-02 21:05:13,530 INFO L226 Difference]: Without dead ends: 1012 [2022-11-02 21:05:13,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:05:13,531 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 203 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:13,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 335 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:05:13,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2022-11-02 21:05:13,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 252. [2022-11-02 21:05:13,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 251 states have (on average 1.3745019920318724) internal successors, (345), 251 states have internal predecessors, (345), 0 states have call successors, (0), 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 21:05:13,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 345 transitions. [2022-11-02 21:05:13,552 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 345 transitions. Word has length 66 [2022-11-02 21:05:13,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:13,552 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 345 transitions. [2022-11-02 21:05:13,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 0 states have call successors, (0), 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 21:05:13,553 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 345 transitions. [2022-11-02 21:05:13,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-02 21:05:13,553 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:13,554 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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 21:05:13,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-02 21:05:13,554 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:13,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:13,555 INFO L85 PathProgramCache]: Analyzing trace with hash 309834924, now seen corresponding path program 1 times [2022-11-02 21:05:13,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:05:13,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547242175] [2022-11-02 21:05:13,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:13,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:05:13,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:13,913 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-02 21:05:13,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:05:13,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547242175] [2022-11-02 21:05:13,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547242175] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:13,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:13,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:05:13,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020696258] [2022-11-02 21:05:13,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:13,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:05:13,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:05:13,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:05:13,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:05:13,916 INFO L87 Difference]: Start difference. First operand 252 states and 345 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 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 21:05:14,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:14,532 INFO L93 Difference]: Finished difference Result 1264 states and 1722 transitions. [2022-11-02 21:05:14,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 21:05:14,532 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 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 66 [2022-11-02 21:05:14,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:14,537 INFO L225 Difference]: With dead ends: 1264 [2022-11-02 21:05:14,537 INFO L226 Difference]: Without dead ends: 1031 [2022-11-02 21:05:14,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-02 21:05:14,538 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 271 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:14,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 389 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 21:05:14,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2022-11-02 21:05:14,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 248. [2022-11-02 21:05:14,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 247 states have (on average 1.3805668016194332) internal successors, (341), 247 states have internal predecessors, (341), 0 states have call successors, (0), 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 21:05:14,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 341 transitions. [2022-11-02 21:05:14,572 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 341 transitions. Word has length 66 [2022-11-02 21:05:14,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:14,572 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 341 transitions. [2022-11-02 21:05:14,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 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 21:05:14,573 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 341 transitions. [2022-11-02 21:05:14,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-02 21:05:14,573 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:14,574 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 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 21:05:14,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-02 21:05:14,574 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:14,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:14,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1499003605, now seen corresponding path program 1 times [2022-11-02 21:05:14,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:05:14,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422973856] [2022-11-02 21:05:14,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:14,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:05:14,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:14,836 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 51 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-02 21:05:14,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:05:14,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422973856] [2022-11-02 21:05:14,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422973856] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:05:14,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180938334] [2022-11-02 21:05:14,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:14,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:05:14,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:05:14,838 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:05:14,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 21:05:15,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:15,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:05:15,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:15,230 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 48 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-02 21:05:15,231 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:05:15,368 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 52 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-02 21:05:15,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180938334] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:05:15,369 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:05:15,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 6] total 12 [2022-11-02 21:05:15,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080849517] [2022-11-02 21:05:15,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:05:15,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 21:05:15,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:05:15,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 21:05:15,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=77, Unknown=0, NotChecked=0, Total=132 [2022-11-02 21:05:15,371 INFO L87 Difference]: Start difference. First operand 248 states and 341 transitions. Second operand has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 states have internal predecessors, (107), 0 states have call successors, (0), 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 21:05:15,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:15,846 INFO L93 Difference]: Finished difference Result 1296 states and 1786 transitions. [2022-11-02 21:05:15,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 21:05:15,846 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 states have internal predecessors, (107), 0 states have call successors, (0), 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 68 [2022-11-02 21:05:15,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:15,850 INFO L225 Difference]: With dead ends: 1296 [2022-11-02 21:05:15,850 INFO L226 Difference]: Without dead ends: 1047 [2022-11-02 21:05:15,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=106, Unknown=0, NotChecked=0, Total=182 [2022-11-02 21:05:15,852 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 411 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:15,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [411 Valid, 120 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:05:15,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1047 states. [2022-11-02 21:05:15,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1047 to 823. [2022-11-02 21:05:15,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 823 states, 822 states have (on average 1.3819951338199514) internal successors, (1136), 822 states have internal predecessors, (1136), 0 states have call successors, (0), 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 21:05:15,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 1136 transitions. [2022-11-02 21:05:15,925 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 1136 transitions. Word has length 68 [2022-11-02 21:05:15,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:15,925 INFO L495 AbstractCegarLoop]: Abstraction has 823 states and 1136 transitions. [2022-11-02 21:05:15,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 states have internal predecessors, (107), 0 states have call successors, (0), 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 21:05:15,926 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 1136 transitions. [2022-11-02 21:05:15,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-02 21:05:15,927 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:15,927 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 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 21:05:15,965 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:16,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-02 21:05:16,146 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:16,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:16,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1439601588, now seen corresponding path program 1 times [2022-11-02 21:05:16,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:05:16,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048556970] [2022-11-02 21:05:16,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:16,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:05:16,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:16,501 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 48 proven. 7 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-02 21:05:16,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:05:16,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048556970] [2022-11-02 21:05:16,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048556970] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:05:16,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898462380] [2022-11-02 21:05:16,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:16,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:05:16,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:05:16,504 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:05:16,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 21:05:16,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:16,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-02 21:05:16,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:17,809 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-02 21:05:17,809 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:05:17,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [898462380] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:17,809 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:05:17,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 11 [2022-11-02 21:05:17,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737428885] [2022-11-02 21:05:17,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:17,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:05:17,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:05:17,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:05:17,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-11-02 21:05:17,811 INFO L87 Difference]: Start difference. First operand 823 states and 1136 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 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 21:05:17,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:17,920 INFO L93 Difference]: Finished difference Result 1735 states and 2383 transitions. [2022-11-02 21:05:17,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:05:17,920 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 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 70 [2022-11-02 21:05:17,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:17,924 INFO L225 Difference]: With dead ends: 1735 [2022-11-02 21:05:17,924 INFO L226 Difference]: Without dead ends: 1156 [2022-11-02 21:05:17,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 66 SyntacticMatches, 4 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-11-02 21:05:17,926 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 82 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 95 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:17,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 299 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 95 Unchecked, 0.0s Time] [2022-11-02 21:05:17,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1156 states. [2022-11-02 21:05:17,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1156 to 854. [2022-11-02 21:05:17,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 853 states have (on average 1.3763188745603752) internal successors, (1174), 853 states have internal predecessors, (1174), 0 states have call successors, (0), 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 21:05:17,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 1174 transitions. [2022-11-02 21:05:17,994 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 1174 transitions. Word has length 70 [2022-11-02 21:05:17,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:17,996 INFO L495 AbstractCegarLoop]: Abstraction has 854 states and 1174 transitions. [2022-11-02 21:05:17,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 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 21:05:17,996 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 1174 transitions. [2022-11-02 21:05:17,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-02 21:05:17,997 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:17,998 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 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 21:05:18,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:18,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-02 21:05:18,209 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:18,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:18,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1493994486, now seen corresponding path program 1 times [2022-11-02 21:05:18,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:05:18,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767570290] [2022-11-02 21:05:18,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:18,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:05:18,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:18,736 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 53 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-02 21:05:18,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:05:18,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767570290] [2022-11-02 21:05:18,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767570290] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:05:18,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556204156] [2022-11-02 21:05:18,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:18,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:05:18,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:05:18,738 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:05:18,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 21:05:19,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:19,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-02 21:05:19,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:19,451 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 57 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-02 21:05:19,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:05:19,610 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 47 proven. 21 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-02 21:05:19,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [556204156] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:05:19,611 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:05:19,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2022-11-02 21:05:19,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702216333] [2022-11-02 21:05:19,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:05:19,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 21:05:19,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:05:19,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 21:05:19,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-11-02 21:05:19,614 INFO L87 Difference]: Start difference. First operand 854 states and 1174 transitions. Second operand has 14 states, 14 states have (on average 9.785714285714286) internal successors, (137), 14 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:20,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:20,183 INFO L93 Difference]: Finished difference Result 1771 states and 2397 transitions. [2022-11-02 21:05:20,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 21:05:20,184 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 9.785714285714286) internal successors, (137), 14 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-11-02 21:05:20,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:20,187 INFO L225 Difference]: With dead ends: 1771 [2022-11-02 21:05:20,187 INFO L226 Difference]: Without dead ends: 971 [2022-11-02 21:05:20,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=133, Invalid=373, Unknown=0, NotChecked=0, Total=506 [2022-11-02 21:05:20,189 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 319 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:20,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [319 Valid, 433 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:05:20,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2022-11-02 21:05:20,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 639. [2022-11-02 21:05:20,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 639 states, 638 states have (on average 1.3605015673981191) internal successors, (868), 638 states have internal predecessors, (868), 0 states have call successors, (0), 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 21:05:20,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 868 transitions. [2022-11-02 21:05:20,252 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 868 transitions. Word has length 70 [2022-11-02 21:05:20,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:20,252 INFO L495 AbstractCegarLoop]: Abstraction has 639 states and 868 transitions. [2022-11-02 21:05:20,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.785714285714286) internal successors, (137), 14 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:20,253 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 868 transitions. [2022-11-02 21:05:20,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-02 21:05:20,254 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:20,254 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 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 21:05:20,270 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-02 21:05:20,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-02 21:05:20,460 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:20,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:20,460 INFO L85 PathProgramCache]: Analyzing trace with hash 605183798, now seen corresponding path program 2 times [2022-11-02 21:05:20,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:05:20,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080273352] [2022-11-02 21:05:20,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:20,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:05:20,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:05:20,543 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 21:05:20,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:05:20,629 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 21:05:20,629 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 21:05:20,630 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-02 21:05:20,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-02 21:05:20,636 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:05:20,642 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 21:05:20,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 09:05:20 BoogieIcfgContainer [2022-11-02 21:05:20,776 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 21:05:20,777 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 21:05:20,777 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 21:05:20,777 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 21:05:20,778 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:05:05" (3/4) ... [2022-11-02 21:05:20,781 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-02 21:05:20,781 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 21:05:20,782 INFO L158 Benchmark]: Toolchain (without parser) took 16772.53ms. Allocated memory was 113.2MB in the beginning and 285.2MB in the end (delta: 172.0MB). Free memory was 76.3MB in the beginning and 253.7MB in the end (delta: -177.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:05:20,782 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 113.2MB. Free memory is still 92.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:05:20,782 INFO L158 Benchmark]: CACSL2BoogieTranslator took 310.33ms. Allocated memory is still 113.2MB. Free memory was 76.0MB in the beginning and 87.4MB in the end (delta: -11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-02 21:05:20,783 INFO L158 Benchmark]: Boogie Procedure Inliner took 78.76ms. Allocated memory is still 113.2MB. Free memory was 87.4MB in the beginning and 81.1MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-02 21:05:20,784 INFO L158 Benchmark]: Boogie Preprocessor took 84.06ms. Allocated memory is still 113.2MB. Free memory was 81.1MB in the beginning and 77.3MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-02 21:05:20,784 INFO L158 Benchmark]: RCFGBuilder took 787.30ms. Allocated memory is still 113.2MB. Free memory was 77.3MB in the beginning and 50.9MB in the end (delta: 26.4MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-11-02 21:05:20,785 INFO L158 Benchmark]: TraceAbstraction took 15501.68ms. Allocated memory was 113.2MB in the beginning and 285.2MB in the end (delta: 172.0MB). Free memory was 50.0MB in the beginning and 253.7MB in the end (delta: -203.6MB). Peak memory consumption was 134.3MB. Max. memory is 16.1GB. [2022-11-02 21:05:20,785 INFO L158 Benchmark]: Witness Printer took 4.25ms. Allocated memory is still 285.2MB. Free memory was 253.7MB in the beginning and 253.7MB in the end (delta: 2.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:05:20,790 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 113.2MB. Free memory is still 92.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 310.33ms. Allocated memory is still 113.2MB. Free memory was 76.0MB in the beginning and 87.4MB in the end (delta: -11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 78.76ms. Allocated memory is still 113.2MB. Free memory was 87.4MB in the beginning and 81.1MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 84.06ms. Allocated memory is still 113.2MB. Free memory was 81.1MB in the beginning and 77.3MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 787.30ms. Allocated memory is still 113.2MB. Free memory was 77.3MB in the beginning and 50.9MB in the end (delta: 26.4MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * TraceAbstraction took 15501.68ms. Allocated memory was 113.2MB in the beginning and 285.2MB in the end (delta: 172.0MB). Free memory was 50.0MB in the beginning and 253.7MB in the end (delta: -203.6MB). Peak memory consumption was 134.3MB. Max. memory is 16.1GB. * Witness Printer took 4.25ms. Allocated memory is still 285.2MB. Free memory was 253.7MB in the beginning and 253.7MB in the end (delta: 2.6kB). 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: 25]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 116, overapproximation of bitwiseAnd at line 96. Possible FailurePath: [L124] unsigned int a, b, r; [L126] b = __VERIFIER_nondet_uint() [L128] a = 234770789 [L130] CALL, EXPR mp_add(a, b) [L42] unsigned char a0, a1, a2, a3; [L43] unsigned char b0, b1, b2, b3; [L44] unsigned char r0, r1, r2, r3; [L45] unsigned short carry; [L46] unsigned short partial_sum; [L47] unsigned int r; [L48] unsigned char i; [L49] unsigned char na, nb; [L50] a0 = a [L51] a1 = a >> 8 [L52] a2 = a >> 16U [L53] a3 = a >> 24U [L54] b0 = b [L55] b1 = b >> 8U [L56] b2 = b >> 16U [L57] b3 = b >> 24U [L58] na = (unsigned char)4 VAL [\old(a)=234770789, \old(b)=255, a=234770789, a0=234770789, a1=917073, a2=3582, a3=13, b=255, b0=-4294967041, b1=-16777216, b2=-65536, b3=-256, na=4] [L59] COND FALSE !(a3 == (unsigned char)0) VAL [\old(a)=234770789, \old(b)=255, a=234770789, a0=234770789, a1=917073, a2=3582, a3=13, b=255, b0=-4294967041, b1=-16777216, b2=-65536, b3=-256, na=4] [L68] nb = (unsigned char)4 VAL [\old(a)=234770789, \old(b)=255, a=234770789, a0=234770789, a1=917073, a2=3582, a3=13, b=255, b0=-4294967041, b1=-16777216, b2=-65536, b3=-256, na=4, nb=4] [L69] COND TRUE b3 == (unsigned char)0 [L70] nb = nb - 1 VAL [\old(a)=234770789, \old(b)=255, a=234770789, a0=234770789, a1=917073, a2=3582, a3=13, b=255, b0=-4294967041, b1=-16777216, b2=-65536, b3=-256, na=4, nb=3] [L71] COND TRUE b2 == (unsigned char)0 [L72] nb = nb - 1 VAL [\old(a)=234770789, \old(b)=255, a=234770789, a0=234770789, a1=917073, a2=3582, a3=13, b=255, b0=-4294967041, b1=-16777216, b2=-65536, b3=-256, na=4, nb=2] [L73] COND TRUE b1 == (unsigned char)0 [L74] nb = nb - 1 VAL [\old(a)=234770789, \old(b)=255, a=234770789, a0=234770789, a1=917073, a2=3582, a3=13, b=255, b0=-4294967041, b1=-16777216, b2=-65536, b3=-256, na=4, nb=1] [L78] carry = (unsigned short)0 [L79] i = (unsigned char)0 VAL [\old(a)=234770789, \old(b)=255, a=234770789, a0=234770789, a1=917073, a2=3582, a3=13, b=255, b0=-4294967041, b1=-16777216, b2=-65536, b3=-256, carry=0, i=0, na=4, nb=1] [L80] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L81] partial_sum = carry [L82] carry = (unsigned short)0 VAL [\old(a)=234770789, \old(b)=255, a=234770789, a0=234770789, a1=917073, a2=3582, a3=13, b=255, b0=-4294967041, b1=-16777216, b2=-65536, b3=-256, carry=0, i=0, na=4, nb=1, partial_sum=0] [L83] COND TRUE i < na VAL [\old(a)=234770789, \old(b)=255, a=234770789, a0=234770789, a1=917073, a2=3582, a3=13, b=255, b0=-4294967041, b1=-16777216, b2=-65536, b3=-256, carry=0, i=0, na=4, nb=1, partial_sum=0] [L84] COND TRUE i == (unsigned char)0 [L84] partial_sum = partial_sum + a0 VAL [\old(a)=234770789, \old(b)=255, a=234770789, a0=234770789, a1=917073, a2=3582, a3=13, b=255, b0=-4294967041, b1=-16777216, b2=-65536, b3=-256, carry=0, i=0, na=4, nb=1, partial_sum=101] [L85] COND FALSE !(i == (unsigned char)1) VAL [\old(a)=234770789, \old(b)=255, a=234770789, a0=234770789, a1=917073, a2=3582, a3=13, b=255, b0=-4294967041, b1=-16777216, b2=-65536, b3=-256, carry=0, i=0, na=4, nb=1, partial_sum=101] [L86] COND FALSE !(i == (unsigned char)2) VAL [\old(a)=234770789, \old(b)=255, a=234770789, a0=234770789, a1=917073, a2=3582, a3=13, b=255, b0=-4294967041, b1=-16777216, b2=-65536, b3=-256, carry=0, i=0, na=4, nb=1, partial_sum=101] [L87] COND FALSE !(i == (unsigned char)3) VAL [\old(a)=234770789, \old(b)=255, a=234770789, a0=234770789, a1=917073, a2=3582, a3=13, b=255, b0=-4294967041, b1=-16777216, b2=-65536, b3=-256, carry=0, i=0, na=4, nb=1, partial_sum=101] [L89] COND TRUE i < nb VAL [\old(a)=234770789, \old(b)=255, a=234770789, a0=234770789, a1=917073, a2=3582, a3=13, b=255, b0=-4294967041, b1=-16777216, b2=-65536, b3=-256, carry=0, i=0, na=4, nb=1, partial_sum=101] [L90] COND TRUE i == (unsigned char)0 [L90] partial_sum = partial_sum + b0 VAL [\old(a)=234770789, \old(b)=255, a=234770789, a0=234770789, a1=917073, a2=3582, a3=13, b=255, b0=-4294967041, b1=-16777216, b2=-65536, b3=-256, carry=0, i=0, na=4, nb=1, partial_sum=356] [L91] COND FALSE !(i == (unsigned char)1) VAL [\old(a)=234770789, \old(b)=255, a=234770789, a0=234770789, a1=917073, a2=3582, a3=13, b=255, b0=-4294967041, b1=-16777216, b2=-65536, b3=-256, carry=0, i=0, na=4, nb=1, partial_sum=356] [L92] COND FALSE !(i == (unsigned char)2) VAL [\old(a)=234770789, \old(b)=255, a=234770789, a0=234770789, a1=917073, a2=3582, a3=13, b=255, b0=-4294967041, b1=-16777216, b2=-65536, b3=-256, carry=0, i=0, na=4, nb=1, partial_sum=356] [L93] COND FALSE !(i == (unsigned char)3) VAL [\old(a)=234770789, \old(b)=255, a=234770789, a0=234770789, a1=917073, a2=3582, a3=13, b=255, b0=-4294967041, b1=-16777216, b2=-65536, b3=-256, carry=0, i=0, na=4, nb=1, partial_sum=356] [L95] COND TRUE partial_sum > ((unsigned char)255) [L96] partial_sum = partial_sum & ((unsigned char)255) [L97] carry = (unsigned short)1 VAL [\old(a)=234770789, \old(b)=255, a=234770789, a0=234770789, a1=917073, a2=3582, a3=13, b=255, b0=-4294967041, b1=-16777216, b2=-65536, b3=-256, carry=1, i=0, na=4, nb=1, partial_sum=256] [L99] COND TRUE i == (unsigned char)0 [L99] r0 = (unsigned char)partial_sum VAL [\old(a)=234770789, \old(b)=255, a=234770789, a0=234770789, a1=917073, a2=3582, a3=13, b=255, b0=-4294967041, b1=-16777216, b2=-65536, b3=-256, carry=1, i=0, na=4, nb=1, partial_sum=256, r0=256] [L100] COND FALSE !(i == (unsigned char)1) VAL [\old(a)=234770789, \old(b)=255, a=234770789, a0=234770789, a1=917073, a2=3582, a3=13, b=255, b0=-4294967041, b1=-16777216, b2=-65536, b3=-256, carry=1, i=0, na=4, nb=1, partial_sum=256, r0=256] [L101] COND FALSE !(i == (unsigned char)2) VAL [\old(a)=234770789, \old(b)=255, a=234770789, a0=234770789, a1=917073, a2=3582, a3=13, b=255, b0=-4294967041, b1=-16777216, b2=-65536, b3=-256, carry=1, i=0, na=4, nb=1, partial_sum=256, r0=256] [L102] COND FALSE !(i == (unsigned char)3) VAL [\old(a)=234770789, \old(b)=255, a=234770789, a0=234770789, a1=917073, a2=3582, a3=13, b=255, b0=-4294967041, b1=-16777216, b2=-65536, b3=-256, carry=1, i=0, na=4, nb=1, partial_sum=256, r0=256] [L104] i = i + (unsigned char)1 VAL [\old(a)=234770789, \old(b)=255, a=234770789, a0=234770789, a1=917073, a2=3582, a3=13, b=255, b0=-4294967041, b1=-16777216, b2=-65536, b3=-256, carry=1, i=1, na=4, nb=1, partial_sum=256, r0=256] [L80] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L81] partial_sum = carry [L82] carry = (unsigned short)0 VAL [\old(a)=234770789, \old(b)=255, a=234770789, a0=234770789, a1=917073, a2=3582, a3=13, b=255, b0=-4294967041, b1=-16777216, b2=-65536, b3=-256, carry=0, i=1, na=4, nb=1, partial_sum=1, r0=256] [L83] COND TRUE i < na VAL [\old(a)=234770789, \old(b)=255, a=234770789, a0=234770789, a1=917073, a2=3582, a3=13, b=255, b0=-4294967041, b1=-16777216, b2=-65536, b3=-256, carry=0, i=1, na=4, nb=1, partial_sum=1, r0=256] [L84] COND FALSE !(i == (unsigned char)0) VAL [\old(a)=234770789, \old(b)=255, a=234770789, a0=234770789, a1=917073, a2=3582, a3=13, b=255, b0=-4294967041, b1=-16777216, b2=-65536, b3=-256, carry=0, i=1, na=4, nb=1, partial_sum=1, r0=256] [L85] COND TRUE i == (unsigned char)1 [L85] partial_sum = partial_sum + a1 VAL [\old(a)=234770789, \old(b)=255, a=234770789, a0=234770789, a1=917073, a2=3582, a3=13, b=255, b0=-4294967041, b1=-16777216, b2=-65536, b3=-256, carry=0, i=1, na=4, nb=1, partial_sum=82, r0=256] [L86] COND FALSE !(i == (unsigned char)2) VAL [\old(a)=234770789, \old(b)=255, a=234770789, a0=234770789, a1=917073, a2=3582, a3=13, b=255, b0=-4294967041, b1=-16777216, b2=-65536, b3=-256, carry=0, i=1, na=4, nb=1, partial_sum=82, r0=256] [L87] COND FALSE !(i == (unsigned char)3) VAL [\old(a)=234770789, \old(b)=255, a=234770789, a0=234770789, a1=917073, a2=3582, a3=13, b=255, b0=-4294967041, b1=-16777216, b2=-65536, b3=-256, carry=0, i=1, na=4, nb=1, partial_sum=82, r0=256] [L89] COND FALSE !(i < nb) VAL [\old(a)=234770789, \old(b)=255, a=234770789, a0=234770789, a1=917073, a2=3582, a3=13, b=255, b0=-4294967041, b1=-16777216, b2=-65536, b3=-256, carry=0, i=1, na=4, nb=1, partial_sum=82, r0=256] [L95] COND FALSE !(partial_sum > ((unsigned char)255)) VAL [\old(a)=234770789, \old(b)=255, a=234770789, a0=234770789, a1=917073, a2=3582, a3=13, b=255, b0=-4294967041, b1=-16777216, b2=-65536, b3=-256, carry=0, i=1, na=4, nb=1, partial_sum=82, r0=256] [L99] COND FALSE !(i == (unsigned char)0) VAL [\old(a)=234770789, \old(b)=255, a=234770789, a0=234770789, a1=917073, a2=3582, a3=13, b=255, b0=-4294967041, b1=-16777216, b2=-65536, b3=-256, carry=0, i=1, na=4, nb=1, partial_sum=82, r0=256] [L100] COND TRUE i == (unsigned char)1 [L100] r1 = (unsigned char)partial_sum VAL [\old(a)=234770789, \old(b)=255, a=234770789, a0=234770789, a1=917073, a2=3582, a3=13, b=255, b0=-4294967041, b1=-16777216, b2=-65536, b3=-256, carry=0, i=1, na=4, nb=1, partial_sum=82, r0=256, r1=82] [L101] COND FALSE !(i == (unsigned char)2) VAL [\old(a)=234770789, \old(b)=255, a=234770789, a0=234770789, a1=917073, a2=3582, a3=13, b=255, b0=-4294967041, b1=-16777216, b2=-65536, b3=-256, carry=0, i=1, na=4, nb=1, partial_sum=82, r0=256, r1=82] [L102] COND FALSE !(i == (unsigned char)3) VAL [\old(a)=234770789, \old(b)=255, a=234770789, a0=234770789, a1=917073, a2=3582, a3=13, b=255, b0=-4294967041, b1=-16777216, b2=-65536, b3=-256, carry=0, i=1, na=4, nb=1, partial_sum=82, r0=256, r1=82] [L104] i = i + (unsigned char)1 VAL [\old(a)=234770789, \old(b)=255, a=234770789, a0=234770789, a1=917073, a2=3582, a3=13, b=255, b0=-4294967041, b1=-16777216, b2=-65536, b3=-256, carry=0, i=2, na=4, nb=1, partial_sum=82, r0=256, r1=82] [L80] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L81] partial_sum = carry [L82] carry = (unsigned short)0 VAL [\old(a)=234770789, \old(b)=255, a=234770789, a0=234770789, a1=917073, a2=3582, a3=13, b=255, b0=-4294967041, b1=-16777216, b2=-65536, b3=-256, carry=0, i=2, na=4, nb=1, partial_sum=0, r0=256, r1=82] [L83] COND TRUE i < na VAL [\old(a)=234770789, \old(b)=255, a=234770789, a0=234770789, a1=917073, a2=3582, a3=13, b=255, b0=-4294967041, b1=-16777216, b2=-65536, b3=-256, carry=0, i=2, na=4, nb=1, partial_sum=0, r0=256, r1=82] [L84] COND FALSE !(i == (unsigned char)0) VAL [\old(a)=234770789, \old(b)=255, a=234770789, a0=234770789, a1=917073, a2=3582, a3=13, b=255, b0=-4294967041, b1=-16777216, b2=-65536, b3=-256, carry=0, i=2, na=4, nb=1, partial_sum=0, r0=256, r1=82] [L85] COND FALSE !(i == (unsigned char)1) VAL [\old(a)=234770789, \old(b)=255, a=234770789, a0=234770789, a1=917073, a2=3582, a3=13, b=255, b0=-4294967041, b1=-16777216, b2=-65536, b3=-256, carry=0, i=2, na=4, nb=1, partial_sum=0, r0=256, r1=82] [L86] COND TRUE i == (unsigned char)2 [L86] partial_sum = partial_sum + a2 VAL [\old(a)=234770789, \old(b)=255, a=234770789, a0=234770789, a1=917073, a2=3582, a3=13, b=255, b0=-4294967041, b1=-16777216, b2=-65536, b3=-256, carry=0, i=2, na=4, nb=1, partial_sum=254, r0=256, r1=82] [L87] COND FALSE !(i == (unsigned char)3) VAL [\old(a)=234770789, \old(b)=255, a=234770789, a0=234770789, a1=917073, a2=3582, a3=13, b=255, b0=-4294967041, b1=-16777216, b2=-65536, b3=-256, carry=0, i=2, na=4, nb=1, partial_sum=254, r0=256, r1=82] [L89] COND FALSE !(i < nb) VAL [\old(a)=234770789, \old(b)=255, a=234770789, a0=234770789, a1=917073, a2=3582, a3=13, b=255, b0=-4294967041, b1=-16777216, b2=-65536, b3=-256, carry=0, i=2, na=4, nb=1, partial_sum=254, r0=256, r1=82] [L95] COND FALSE !(partial_sum > ((unsigned char)255)) VAL [\old(a)=234770789, \old(b)=255, a=234770789, a0=234770789, a1=917073, a2=3582, a3=13, b=255, b0=-4294967041, b1=-16777216, b2=-65536, b3=-256, carry=0, i=2, na=4, nb=1, partial_sum=254, r0=256, r1=82] [L99] COND FALSE !(i == (unsigned char)0) VAL [\old(a)=234770789, \old(b)=255, a=234770789, a0=234770789, a1=917073, a2=3582, a3=13, b=255, b0=-4294967041, b1=-16777216, b2=-65536, b3=-256, carry=0, i=2, na=4, nb=1, partial_sum=254, r0=256, r1=82] [L100] COND FALSE !(i == (unsigned char)1) VAL [\old(a)=234770789, \old(b)=255, a=234770789, a0=234770789, a1=917073, a2=3582, a3=13, b=255, b0=-4294967041, b1=-16777216, b2=-65536, b3=-256, carry=0, i=2, na=4, nb=1, partial_sum=254, r0=256, r1=82] [L101] COND TRUE i == (unsigned char)2 [L101] r2 = (unsigned char)partial_sum VAL [\old(a)=234770789, \old(b)=255, a=234770789, a0=234770789, a1=917073, a2=3582, a3=13, b=255, b0=-4294967041, b1=-16777216, b2=-65536, b3=-256, carry=0, i=2, na=4, nb=1, partial_sum=254, r0=256, r1=82, r2=254] [L102] COND FALSE !(i == (unsigned char)3) VAL [\old(a)=234770789, \old(b)=255, a=234770789, a0=234770789, a1=917073, a2=3582, a3=13, b=255, b0=-4294967041, b1=-16777216, b2=-65536, b3=-256, carry=0, i=2, na=4, nb=1, partial_sum=254, r0=256, r1=82, r2=254] [L104] i = i + (unsigned char)1 VAL [\old(a)=234770789, \old(b)=255, a=234770789, a0=234770789, a1=917073, a2=3582, a3=13, b=255, b0=-4294967041, b1=-16777216, b2=-65536, b3=-256, carry=0, i=3, na=4, nb=1, partial_sum=254, r0=256, r1=82, r2=254] [L80] COND TRUE (i < na) || (i < nb) || (carry != (unsigned short)0) [L81] partial_sum = carry [L82] carry = (unsigned short)0 VAL [\old(a)=234770789, \old(b)=255, a=234770789, a0=234770789, a1=917073, a2=3582, a3=13, b=255, b0=-4294967041, b1=-16777216, b2=-65536, b3=-256, carry=0, i=3, na=4, nb=1, partial_sum=0, r0=256, r1=82, r2=254] [L83] COND TRUE i < na VAL [\old(a)=234770789, \old(b)=255, a=234770789, a0=234770789, a1=917073, a2=3582, a3=13, b=255, b0=-4294967041, b1=-16777216, b2=-65536, b3=-256, carry=0, i=3, na=4, nb=1, partial_sum=0, r0=256, r1=82, r2=254] [L84] COND FALSE !(i == (unsigned char)0) VAL [\old(a)=234770789, \old(b)=255, a=234770789, a0=234770789, a1=917073, a2=3582, a3=13, b=255, b0=-4294967041, b1=-16777216, b2=-65536, b3=-256, carry=0, i=3, na=4, nb=1, partial_sum=0, r0=256, r1=82, r2=254] [L85] COND FALSE !(i == (unsigned char)1) VAL [\old(a)=234770789, \old(b)=255, a=234770789, a0=234770789, a1=917073, a2=3582, a3=13, b=255, b0=-4294967041, b1=-16777216, b2=-65536, b3=-256, carry=0, i=3, na=4, nb=1, partial_sum=0, r0=256, r1=82, r2=254] [L86] COND FALSE !(i == (unsigned char)2) VAL [\old(a)=234770789, \old(b)=255, a=234770789, a0=234770789, a1=917073, a2=3582, a3=13, b=255, b0=-4294967041, b1=-16777216, b2=-65536, b3=-256, carry=0, i=3, na=4, nb=1, partial_sum=0, r0=256, r1=82, r2=254] [L87] COND TRUE i == (unsigned char)3 [L87] partial_sum = partial_sum + a3 VAL [\old(a)=234770789, \old(b)=255, a=234770789, a0=234770789, a1=917073, a2=3582, a3=13, b=255, b0=-4294967041, b1=-16777216, b2=-65536, b3=-256, carry=0, i=3, na=4, nb=1, partial_sum=13, r0=256, r1=82, r2=254] [L89] COND FALSE !(i < nb) VAL [\old(a)=234770789, \old(b)=255, a=234770789, a0=234770789, a1=917073, a2=3582, a3=13, b=255, b0=-4294967041, b1=-16777216, b2=-65536, b3=-256, carry=0, i=3, na=4, nb=1, partial_sum=13, r0=256, r1=82, r2=254] [L95] COND FALSE !(partial_sum > ((unsigned char)255)) VAL [\old(a)=234770789, \old(b)=255, a=234770789, a0=234770789, a1=917073, a2=3582, a3=13, b=255, b0=-4294967041, b1=-16777216, b2=-65536, b3=-256, carry=0, i=3, na=4, nb=1, partial_sum=13, r0=256, r1=82, r2=254] [L99] COND FALSE !(i == (unsigned char)0) VAL [\old(a)=234770789, \old(b)=255, a=234770789, a0=234770789, a1=917073, a2=3582, a3=13, b=255, b0=-4294967041, b1=-16777216, b2=-65536, b3=-256, carry=0, i=3, na=4, nb=1, partial_sum=13, r0=256, r1=82, r2=254] [L100] COND FALSE !(i == (unsigned char)1) VAL [\old(a)=234770789, \old(b)=255, a=234770789, a0=234770789, a1=917073, a2=3582, a3=13, b=255, b0=-4294967041, b1=-16777216, b2=-65536, b3=-256, carry=0, i=3, na=4, nb=1, partial_sum=13, r0=256, r1=82, r2=254] [L101] COND FALSE !(i == (unsigned char)2) VAL [\old(a)=234770789, \old(b)=255, a=234770789, a0=234770789, a1=917073, a2=3582, a3=13, b=255, b0=-4294967041, b1=-16777216, b2=-65536, b3=-256, carry=0, i=3, na=4, nb=1, partial_sum=13, r0=256, r1=82, r2=254] [L102] COND TRUE i == (unsigned char)3 [L102] r3 = (unsigned char)partial_sum VAL [\old(a)=234770789, \old(b)=255, a=234770789, a0=234770789, a1=917073, a2=3582, a3=13, b=255, b0=-4294967041, b1=-16777216, b2=-65536, b3=-256, carry=0, i=3, na=4, nb=1, partial_sum=13, r0=256, r1=82, r2=254, r3=13] [L104] i = i + (unsigned char)1 VAL [\old(a)=234770789, \old(b)=255, a=234770789, a0=234770789, a1=917073, a2=3582, a3=13, b=255, b0=-4294967041, b1=-16777216, b2=-65536, b3=-256, carry=0, i=4, na=4, nb=1, partial_sum=13, r0=256, r1=82, r2=254, r3=13] [L80] COND FALSE !((i < na) || (i < nb) || (carry != (unsigned short)0)) VAL [\old(a)=234770789, \old(b)=255, a=234770789, a0=234770789, a1=917073, a2=3582, a3=13, b=255, b0=-4294967041, b1=-16777216, b2=-65536, b3=-256, carry=0, i=4, na=4, nb=1, partial_sum=13, r0=256, r1=82, r2=254, r3=13] [L107] COND FALSE !(i < (unsigned char)4) VAL [\old(a)=234770789, \old(b)=255, a=234770789, a0=234770789, a1=917073, a2=3582, a3=13, b=255, b0=-4294967041, b1=-16777216, b2=-65536, b3=-256, carry=0, i=4, na=4, nb=1, partial_sum=13, r0=256, r1=82, r2=254, r3=13] [L116] r = r0 | (r1 << 8U) | (r2 << 16U) | ((unsigned int)r3 << 24U) [L118] return r; VAL [\old(a)=234770789, \old(b)=255, \result=218103808, a=234770789, a0=234770789, a1=917073, a2=3582, a3=13, b=255, b0=-4294967041, b1=-16777216, b2=-65536, b3=-256, carry=0, i=4, na=4, nb=1, partial_sum=13, r=218103808, r0=256, r1=82, r2=254, r3=13] [L130] RET, EXPR mp_add(a, b) [L130] r = mp_add(a, b) [L132] CALL __VERIFIER_assert(r == a + b) [L24] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L25] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 42 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 15.3s, OverallIterations: 18, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 4.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2064 SdHoareTripleChecker+Valid, 3.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2064 mSDsluCounter, 2799 SdHoareTripleChecker+Invalid, 2.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 95 IncrementalHoareTripleChecker+Unchecked, 1705 mSDsCounter, 267 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2318 IncrementalHoareTripleChecker+Invalid, 2680 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 267 mSolverCounterUnsat, 1094 mSDtfsCounter, 2318 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 555 GetRequests, 451 SyntacticMatches, 10 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=854occurred in iteration=16, InterpolantAutomatonStates: 94, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 17 MinimizatonAttempts, 3109 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 6.1s InterpolantComputationTime, 1094 NumberOfCodeBlocks, 1094 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 1138 ConstructedInterpolants, 26 QuantifiedInterpolants, 5227 SizeOfPredicates, 16 NumberOfNonLiveVariables, 845 ConjunctsInSsa, 51 ConjunctsInUnsatCore, 24 InterpolantComputations, 15 PerfectInterpolantSequences, 1025/1075 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 21:05:20,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/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_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/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_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/byte_add_1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0ba3e3db8f44a5e9ad151b8422bee8deebac1dcf47a42cba5485daeafd8d8e80 --- 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 21:05:23,117 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:05:23,120 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:05:23,165 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:05:23,165 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:05:23,169 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:05:23,171 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:05:23,175 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:05:23,181 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:05:23,182 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:05:23,183 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:05:23,185 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:05:23,186 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:05:23,189 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:05:23,190 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:05:23,192 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:05:23,193 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:05:23,198 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:05:23,200 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:05:23,219 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:05:23,224 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:05:23,225 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:05:23,226 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:05:23,227 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:05:23,230 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:05:23,231 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:05:23,231 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:05:23,232 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:05:23,232 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:05:23,233 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:05:23,234 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:05:23,234 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:05:23,235 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:05:23,236 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:05:23,237 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:05:23,237 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:05:23,238 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:05:23,238 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:05:23,239 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:05:23,240 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:05:23,240 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:05:23,241 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-11-02 21:05:23,263 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:05:23,263 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:05:23,263 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:05:23,263 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:05:23,264 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:05:23,264 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:05:23,265 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:05:23,265 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:05:23,266 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:05:23,266 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:05:23,266 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 21:05:23,266 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 21:05:23,266 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:05:23,267 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:05:23,267 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:05:23,267 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:05:23,267 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 21:05:23,268 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-02 21:05:23,268 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-02 21:05:23,268 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 21:05:23,268 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:05:23,268 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:05:23,269 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:05:23,269 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:05:23,269 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:05:23,269 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:05:23,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:05:23,270 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:05:23,270 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:05:23,270 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:05:23,270 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-02 21:05:23,271 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-02 21:05:23,271 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:05:23,271 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:05:23,271 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:05:23,272 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-02 21:05:23,272 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_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0ba3e3db8f44a5e9ad151b8422bee8deebac1dcf47a42cba5485daeafd8d8e80 [2022-11-02 21:05:23,631 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:05:23,673 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:05:23,678 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:05:23,679 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:05:23,680 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:05:23,682 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/bitvector/byte_add_1-1.i [2022-11-02 21:05:23,764 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/data/728ae3a0a/f223e5e1112445eaa3ba2f939e7216f1/FLAGb57e4bc7c [2022-11-02 21:05:24,380 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:05:24,381 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/sv-benchmarks/c/bitvector/byte_add_1-1.i [2022-11-02 21:05:24,388 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/data/728ae3a0a/f223e5e1112445eaa3ba2f939e7216f1/FLAGb57e4bc7c [2022-11-02 21:05:24,401 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/data/728ae3a0a/f223e5e1112445eaa3ba2f939e7216f1 [2022-11-02 21:05:24,403 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:05:24,405 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:05:24,406 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:05:24,406 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:05:24,410 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:05:24,411 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:05:24" (1/1) ... [2022-11-02 21:05:24,412 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3303e54f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:24, skipping insertion in model container [2022-11-02 21:05:24,412 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:05:24" (1/1) ... [2022-11-02 21:05:24,424 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:05:24,445 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:05:24,606 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_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/sv-benchmarks/c/bitvector/byte_add_1-1.i[1168,1181] [2022-11-02 21:05:24,664 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:05:24,685 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:05:24,719 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_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/sv-benchmarks/c/bitvector/byte_add_1-1.i[1168,1181] [2022-11-02 21:05:24,753 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:05:24,777 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:05:24,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:24 WrapperNode [2022-11-02 21:05:24,778 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:05:24,779 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:05:24,779 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:05:24,780 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:05:24,787 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:24" (1/1) ... [2022-11-02 21:05:24,807 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:24" (1/1) ... [2022-11-02 21:05:24,841 INFO L138 Inliner]: procedures = 16, calls = 8, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 123 [2022-11-02 21:05:24,842 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:05:24,844 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:05:24,844 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:05:24,844 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:05:24,853 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:24" (1/1) ... [2022-11-02 21:05:24,854 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:24" (1/1) ... [2022-11-02 21:05:24,868 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:24" (1/1) ... [2022-11-02 21:05:24,868 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:24" (1/1) ... [2022-11-02 21:05:24,873 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:24" (1/1) ... [2022-11-02 21:05:24,890 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:24" (1/1) ... [2022-11-02 21:05:24,893 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:24" (1/1) ... [2022-11-02 21:05:24,903 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:24" (1/1) ... [2022-11-02 21:05:24,905 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:05:24,906 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:05:24,906 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:05:24,910 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:05:24,911 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:24" (1/1) ... [2022-11-02 21:05:24,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:05:24,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:05:24,942 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:05:24,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:05:24,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 21:05:24,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-02 21:05:24,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:05:24,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:05:25,089 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:05:25,092 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:05:25,502 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:05:25,509 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:05:25,509 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-02 21:05:25,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:05:25 BoogieIcfgContainer [2022-11-02 21:05:25,512 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:05:25,532 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:05:25,532 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:05:25,535 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:05:25,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:05:24" (1/3) ... [2022-11-02 21:05:25,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f08ac1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:05:25, skipping insertion in model container [2022-11-02 21:05:25,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:24" (2/3) ... [2022-11-02 21:05:25,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f08ac1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:05:25, skipping insertion in model container [2022-11-02 21:05:25,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:05:25" (3/3) ... [2022-11-02 21:05:25,539 INFO L112 eAbstractionObserver]: Analyzing ICFG byte_add_1-1.i [2022-11-02 21:05:25,561 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:05:25,561 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 21:05:25,638 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:05:25,645 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;@3c67e7e0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:05:25,645 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 21:05:25,649 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 40 states have (on average 1.775) internal successors, (71), 41 states have internal predecessors, (71), 0 states have call successors, (0), 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 21:05:25,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-02 21:05:25,656 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:25,657 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:05:25,658 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:25,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:25,666 INFO L85 PathProgramCache]: Analyzing trace with hash 255061167, now seen corresponding path program 1 times [2022-11-02 21:05:25,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:25,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [447326198] [2022-11-02 21:05:25,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:25,681 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:25,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:25,685 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:25,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-02 21:05:25,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:25,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-02 21:05:25,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:25,838 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 21:05:25,839 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:05:25,840 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:25,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [447326198] [2022-11-02 21:05:25,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [447326198] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:25,841 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:25,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:05:25,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204880286] [2022-11-02 21:05:25,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:25,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 21:05:25,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:25,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 21:05:25,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 21:05:25,887 INFO L87 Difference]: Start difference. First operand has 42 states, 40 states have (on average 1.775) internal successors, (71), 41 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 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 21:05:25,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:25,915 INFO L93 Difference]: Finished difference Result 57 states and 92 transitions. [2022-11-02 21:05:25,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 21:05:25,918 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2022-11-02 21:05:25,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:25,929 INFO L225 Difference]: With dead ends: 57 [2022-11-02 21:05:25,929 INFO L226 Difference]: Without dead ends: 38 [2022-11-02 21:05:25,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 21:05:25,940 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:25,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:05:25,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-02 21:05:25,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-11-02 21:05:25,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.7297297297297298) internal successors, (64), 37 states have internal predecessors, (64), 0 states have call successors, (0), 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 21:05:25,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 64 transitions. [2022-11-02 21:05:25,987 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 64 transitions. Word has length 12 [2022-11-02 21:05:25,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:25,988 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 64 transitions. [2022-11-02 21:05:25,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 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 21:05:25,989 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 64 transitions. [2022-11-02 21:05:25,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-02 21:05:25,991 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:25,991 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:05:26,016 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:26,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:26,217 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:26,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:26,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1803477009, now seen corresponding path program 1 times [2022-11-02 21:05:26,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:26,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [182224302] [2022-11-02 21:05:26,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:26,219 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:26,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:26,221 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:26,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-02 21:05:26,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:26,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 21:05:26,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:26,351 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 21:05:26,352 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:05:26,352 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:26,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [182224302] [2022-11-02 21:05:26,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [182224302] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:26,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:26,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:05:26,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902310862] [2022-11-02 21:05:26,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:26,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:05:26,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:26,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:05:26,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:05:26,356 INFO L87 Difference]: Start difference. First operand 38 states and 64 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 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 21:05:26,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:26,558 INFO L93 Difference]: Finished difference Result 116 states and 201 transitions. [2022-11-02 21:05:26,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:05:26,559 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2022-11-02 21:05:26,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:26,560 INFO L225 Difference]: With dead ends: 116 [2022-11-02 21:05:26,560 INFO L226 Difference]: Without dead ends: 88 [2022-11-02 21:05:26,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:05:26,562 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 91 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:26,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 137 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:05:26,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-11-02 21:05:26,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 81. [2022-11-02 21:05:26,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.625) internal successors, (130), 80 states have internal predecessors, (130), 0 states have call successors, (0), 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 21:05:26,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 130 transitions. [2022-11-02 21:05:26,576 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 130 transitions. Word has length 12 [2022-11-02 21:05:26,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:26,576 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 130 transitions. [2022-11-02 21:05:26,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 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 21:05:26,577 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 130 transitions. [2022-11-02 21:05:26,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 21:05:26,578 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:26,578 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:05:26,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:26,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:26,790 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:26,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:26,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1087802014, now seen corresponding path program 1 times [2022-11-02 21:05:26,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:26,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1701524979] [2022-11-02 21:05:26,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:26,792 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:26,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:26,799 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:26,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-02 21:05:26,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:26,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 21:05:26,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:26,889 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 21:05:26,889 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:05:26,890 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:26,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1701524979] [2022-11-02 21:05:26,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1701524979] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:26,890 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:26,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:05:26,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233490416] [2022-11-02 21:05:26,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:26,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:05:26,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:26,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:05:26,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:05:26,893 INFO L87 Difference]: Start difference. First operand 81 states and 130 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 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 21:05:27,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:27,114 INFO L93 Difference]: Finished difference Result 164 states and 271 transitions. [2022-11-02 21:05:27,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:05:27,115 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 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 13 [2022-11-02 21:05:27,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:27,117 INFO L225 Difference]: With dead ends: 164 [2022-11-02 21:05:27,117 INFO L226 Difference]: Without dead ends: 136 [2022-11-02 21:05:27,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:05:27,119 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 141 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:27,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 284 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:05:27,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2022-11-02 21:05:27,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 81. [2022-11-02 21:05:27,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.625) internal successors, (130), 80 states have internal predecessors, (130), 0 states have call successors, (0), 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 21:05:27,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 130 transitions. [2022-11-02 21:05:27,133 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 130 transitions. Word has length 13 [2022-11-02 21:05:27,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:27,133 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 130 transitions. [2022-11-02 21:05:27,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 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 21:05:27,134 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 130 transitions. [2022-11-02 21:05:27,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-02 21:05:27,135 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:27,135 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:05:27,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:27,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:27,339 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:27,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:27,343 INFO L85 PathProgramCache]: Analyzing trace with hash 583572890, now seen corresponding path program 1 times [2022-11-02 21:05:27,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:27,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [439383676] [2022-11-02 21:05:27,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:27,348 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:27,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:27,352 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:27,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-02 21:05:27,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:27,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:05:27,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:27,449 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 21:05:27,449 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:05:27,450 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:27,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [439383676] [2022-11-02 21:05:27,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [439383676] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:27,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:27,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:05:27,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623399433] [2022-11-02 21:05:27,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:27,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:05:27,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:27,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:05:27,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:05:27,453 INFO L87 Difference]: Start difference. First operand 81 states and 130 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 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 21:05:27,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:27,844 INFO L93 Difference]: Finished difference Result 212 states and 341 transitions. [2022-11-02 21:05:27,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:05:27,845 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2022-11-02 21:05:27,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:27,848 INFO L225 Difference]: With dead ends: 212 [2022-11-02 21:05:27,851 INFO L226 Difference]: Without dead ends: 184 [2022-11-02 21:05:27,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:05:27,859 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 166 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:27,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 559 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:05:27,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2022-11-02 21:05:27,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 81. [2022-11-02 21:05:27,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.625) internal successors, (130), 80 states have internal predecessors, (130), 0 states have call successors, (0), 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 21:05:27,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 130 transitions. [2022-11-02 21:05:27,879 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 130 transitions. Word has length 14 [2022-11-02 21:05:27,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:27,880 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 130 transitions. [2022-11-02 21:05:27,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 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 21:05:27,881 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 130 transitions. [2022-11-02 21:05:27,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-02 21:05:27,882 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:27,882 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:05:27,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:28,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:28,094 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:28,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:28,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1392919516, now seen corresponding path program 1 times [2022-11-02 21:05:28,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:28,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1963107199] [2022-11-02 21:05:28,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:28,096 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:28,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:28,097 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:28,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-02 21:05:28,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:28,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:05:28,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:28,201 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 21:05:28,202 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:05:28,202 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:28,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1963107199] [2022-11-02 21:05:28,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1963107199] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:28,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:28,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:05:28,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675396603] [2022-11-02 21:05:28,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:28,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:05:28,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:28,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:05:28,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:05:28,205 INFO L87 Difference]: Start difference. First operand 81 states and 130 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 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 21:05:28,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:28,546 INFO L93 Difference]: Finished difference Result 227 states and 354 transitions. [2022-11-02 21:05:28,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:05:28,547 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2022-11-02 21:05:28,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:28,548 INFO L225 Difference]: With dead ends: 227 [2022-11-02 21:05:28,548 INFO L226 Difference]: Without dead ends: 199 [2022-11-02 21:05:28,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:05:28,552 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 208 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 711 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:28,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 711 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:05:28,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2022-11-02 21:05:28,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 87. [2022-11-02 21:05:28,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.5) internal successors, (129), 86 states have internal predecessors, (129), 0 states have call successors, (0), 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 21:05:28,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 129 transitions. [2022-11-02 21:05:28,577 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 129 transitions. Word has length 14 [2022-11-02 21:05:28,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:28,578 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 129 transitions. [2022-11-02 21:05:28,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 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 21:05:28,579 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 129 transitions. [2022-11-02 21:05:28,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-02 21:05:28,582 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:28,582 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:05:28,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:28,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:28,794 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:28,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:28,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1480128500, now seen corresponding path program 1 times [2022-11-02 21:05:28,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:28,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1305613251] [2022-11-02 21:05:28,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:28,795 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:28,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:28,796 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:28,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-02 21:05:28,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:28,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 21:05:28,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:28,890 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:28,891 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:05:28,891 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:28,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1305613251] [2022-11-02 21:05:28,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1305613251] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:28,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:28,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:05:28,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795805990] [2022-11-02 21:05:28,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:28,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:05:28,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:28,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:05:28,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:05:28,894 INFO L87 Difference]: Start difference. First operand 87 states and 129 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 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 21:05:28,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:28,994 INFO L93 Difference]: Finished difference Result 243 states and 358 transitions. [2022-11-02 21:05:28,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:05:28,995 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2022-11-02 21:05:28,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:28,996 INFO L225 Difference]: With dead ends: 243 [2022-11-02 21:05:28,996 INFO L226 Difference]: Without dead ends: 173 [2022-11-02 21:05:28,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:05:28,998 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 93 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:28,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 152 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:05:28,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-11-02 21:05:29,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 97. [2022-11-02 21:05:29,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.4791666666666667) internal successors, (142), 96 states have internal predecessors, (142), 0 states have call successors, (0), 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 21:05:29,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 142 transitions. [2022-11-02 21:05:29,008 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 142 transitions. Word has length 25 [2022-11-02 21:05:29,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:29,008 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 142 transitions. [2022-11-02 21:05:29,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 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 21:05:29,009 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 142 transitions. [2022-11-02 21:05:29,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-02 21:05:29,010 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:29,010 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:05:29,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:29,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:29,222 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:29,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:29,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1384042382, now seen corresponding path program 1 times [2022-11-02 21:05:29,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:29,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1458415299] [2022-11-02 21:05:29,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:29,223 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:29,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:29,224 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:29,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-02 21:05:29,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:29,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:05:29,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:29,286 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:05:29,286 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:05:29,287 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:29,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1458415299] [2022-11-02 21:05:29,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1458415299] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:29,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:29,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:05:29,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388686587] [2022-11-02 21:05:29,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:29,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:05:29,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:29,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:05:29,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:05:29,289 INFO L87 Difference]: Start difference. First operand 97 states and 142 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 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 21:05:29,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:29,300 INFO L93 Difference]: Finished difference Result 169 states and 248 transitions. [2022-11-02 21:05:29,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:05:29,301 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2022-11-02 21:05:29,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:29,301 INFO L225 Difference]: With dead ends: 169 [2022-11-02 21:05:29,301 INFO L226 Difference]: Without dead ends: 85 [2022-11-02 21:05:29,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:05:29,309 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 57 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:29,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 58 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:05:29,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-11-02 21:05:29,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2022-11-02 21:05:29,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.4523809523809523) internal successors, (122), 84 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:29,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 122 transitions. [2022-11-02 21:05:29,318 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 122 transitions. Word has length 26 [2022-11-02 21:05:29,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:29,318 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 122 transitions. [2022-11-02 21:05:29,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 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 21:05:29,319 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 122 transitions. [2022-11-02 21:05:29,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-02 21:05:29,319 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:29,320 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:05:29,335 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:29,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:29,531 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:29,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:29,532 INFO L85 PathProgramCache]: Analyzing trace with hash 221982208, now seen corresponding path program 1 times [2022-11-02 21:05:29,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:29,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1032061960] [2022-11-02 21:05:29,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:29,533 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:29,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:29,534 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:29,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-02 21:05:29,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:29,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 21:05:29,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:29,708 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:29,709 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:05:29,709 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:29,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1032061960] [2022-11-02 21:05:29,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1032061960] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:29,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:29,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:05:29,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143864448] [2022-11-02 21:05:29,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:29,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:05:29,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:29,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:05:29,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:05:29,711 INFO L87 Difference]: Start difference. First operand 85 states and 122 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 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 21:05:29,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:29,855 INFO L93 Difference]: Finished difference Result 150 states and 213 transitions. [2022-11-02 21:05:29,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:05:29,855 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2022-11-02 21:05:29,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:29,857 INFO L225 Difference]: With dead ends: 150 [2022-11-02 21:05:29,857 INFO L226 Difference]: Without dead ends: 136 [2022-11-02 21:05:29,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 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 21:05:29,858 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 55 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 63 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:29,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 125 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 101 Invalid, 0 Unknown, 63 Unchecked, 0.1s Time] [2022-11-02 21:05:29,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2022-11-02 21:05:29,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 121. [2022-11-02 21:05:29,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.4583333333333333) internal successors, (175), 120 states have internal predecessors, (175), 0 states have call successors, (0), 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 21:05:29,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 175 transitions. [2022-11-02 21:05:29,880 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 175 transitions. Word has length 29 [2022-11-02 21:05:29,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:29,881 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 175 transitions. [2022-11-02 21:05:29,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 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 21:05:29,881 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 175 transitions. [2022-11-02 21:05:29,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-02 21:05:29,886 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:29,886 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:05:29,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:30,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:30,097 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:30,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:30,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1570096335, now seen corresponding path program 1 times [2022-11-02 21:05:30,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:30,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [925034851] [2022-11-02 21:05:30,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:30,099 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:30,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:30,100 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:30,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-02 21:05:30,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:30,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:05:30,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:30,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:30,279 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:05:30,279 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:30,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [925034851] [2022-11-02 21:05:30,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [925034851] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:30,280 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:30,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:05:30,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058553439] [2022-11-02 21:05:30,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:30,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:05:30,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:30,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:05:30,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:05:30,283 INFO L87 Difference]: Start difference. First operand 121 states and 175 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 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 21:05:30,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:30,489 INFO L93 Difference]: Finished difference Result 200 states and 284 transitions. [2022-11-02 21:05:30,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:05:30,490 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2022-11-02 21:05:30,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:30,491 INFO L225 Difference]: With dead ends: 200 [2022-11-02 21:05:30,491 INFO L226 Difference]: Without dead ends: 186 [2022-11-02 21:05:30,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 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 21:05:30,492 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 105 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 63 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:30,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 234 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 161 Invalid, 0 Unknown, 63 Unchecked, 0.2s Time] [2022-11-02 21:05:30,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2022-11-02 21:05:30,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 121. [2022-11-02 21:05:30,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.4583333333333333) internal successors, (175), 120 states have internal predecessors, (175), 0 states have call successors, (0), 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 21:05:30,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 175 transitions. [2022-11-02 21:05:30,502 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 175 transitions. Word has length 30 [2022-11-02 21:05:30,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:30,502 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 175 transitions. [2022-11-02 21:05:30,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 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 21:05:30,503 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 175 transitions. [2022-11-02 21:05:30,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-02 21:05:30,503 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:30,503 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:05:30,520 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:30,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:30,715 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:30,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:30,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1760226409, now seen corresponding path program 1 times [2022-11-02 21:05:30,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:30,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1116185388] [2022-11-02 21:05:30,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:30,717 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:30,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:30,718 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:30,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-02 21:05:30,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:30,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:05:30,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:30,901 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:30,901 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:05:31,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:31,075 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:31,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1116185388] [2022-11-02 21:05:31,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1116185388] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:05:31,082 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:05:31,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-11-02 21:05:31,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073726963] [2022-11-02 21:05:31,082 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:05:31,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 21:05:31,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:31,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 21:05:31,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-02 21:05:31,084 INFO L87 Difference]: Start difference. First operand 121 states and 175 transitions. Second operand has 12 states, 12 states have (on average 4.5) internal successors, (54), 12 states have internal predecessors, (54), 0 states have call successors, (0), 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 21:05:31,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:31,939 INFO L93 Difference]: Finished difference Result 366 states and 563 transitions. [2022-11-02 21:05:31,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:05:31,939 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 12 states have internal predecessors, (54), 0 states have call successors, (0), 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 31 [2022-11-02 21:05:31,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:31,941 INFO L225 Difference]: With dead ends: 366 [2022-11-02 21:05:31,941 INFO L226 Difference]: Without dead ends: 290 [2022-11-02 21:05:31,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:05:31,942 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 716 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 799 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 716 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:31,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [716 Valid, 390 Invalid, 946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 799 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-02 21:05:31,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2022-11-02 21:05:31,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 256. [2022-11-02 21:05:31,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 255 states have (on average 1.4705882352941178) internal successors, (375), 255 states have internal predecessors, (375), 0 states have call successors, (0), 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 21:05:31,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 375 transitions. [2022-11-02 21:05:31,969 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 375 transitions. Word has length 31 [2022-11-02 21:05:31,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:31,969 INFO L495 AbstractCegarLoop]: Abstraction has 256 states and 375 transitions. [2022-11-02 21:05:31,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 12 states have internal predecessors, (54), 0 states have call successors, (0), 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 21:05:31,970 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 375 transitions. [2022-11-02 21:05:31,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-02 21:05:31,971 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:31,971 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:05:31,982 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2022-11-02 21:05:32,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:32,183 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:32,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:32,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1900775019, now seen corresponding path program 1 times [2022-11-02 21:05:32,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:32,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1483459280] [2022-11-02 21:05:32,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:32,184 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:32,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:32,185 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:32,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-02 21:05:32,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:32,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 21:05:32,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:32,335 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:32,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:05:32,419 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:32,419 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:32,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1483459280] [2022-11-02 21:05:32,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1483459280] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:05:32,420 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:05:32,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-02 21:05:32,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256718596] [2022-11-02 21:05:32,420 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:05:32,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:05:32,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:32,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:05:32,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:05:32,430 INFO L87 Difference]: Start difference. First operand 256 states and 375 transitions. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 0 states have call successors, (0), 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 21:05:32,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:32,749 INFO L93 Difference]: Finished difference Result 715 states and 1105 transitions. [2022-11-02 21:05:32,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:05:32,750 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 0 states have call successors, (0), 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 31 [2022-11-02 21:05:32,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:32,753 INFO L225 Difference]: With dead ends: 715 [2022-11-02 21:05:32,753 INFO L226 Difference]: Without dead ends: 481 [2022-11-02 21:05:32,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:05:32,756 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 221 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:32,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 70 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:05:32,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2022-11-02 21:05:32,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 396. [2022-11-02 21:05:32,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 395 states have (on average 1.440506329113924) internal successors, (569), 395 states have internal predecessors, (569), 0 states have call successors, (0), 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 21:05:32,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 569 transitions. [2022-11-02 21:05:32,792 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 569 transitions. Word has length 31 [2022-11-02 21:05:32,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:32,793 INFO L495 AbstractCegarLoop]: Abstraction has 396 states and 569 transitions. [2022-11-02 21:05:32,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 0 states have call successors, (0), 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 21:05:32,793 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 569 transitions. [2022-11-02 21:05:32,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-02 21:05:32,797 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:32,798 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 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 21:05:32,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:33,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:33,009 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:33,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:33,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1235829048, now seen corresponding path program 1 times [2022-11-02 21:05:33,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:33,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1337381665] [2022-11-02 21:05:33,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:33,010 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:33,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:33,012 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:33,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-02 21:05:33,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:33,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 21:05:33,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:33,214 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 53 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-02 21:05:33,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:05:33,353 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 49 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-02 21:05:33,354 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:33,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1337381665] [2022-11-02 21:05:33,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1337381665] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:05:33,354 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:05:33,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-11-02 21:05:33,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379491918] [2022-11-02 21:05:33,355 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:05:33,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 21:05:33,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:33,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 21:05:33,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:05:33,356 INFO L87 Difference]: Start difference. First operand 396 states and 569 transitions. Second operand has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 0 states have call successors, (0), 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 21:05:33,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:33,746 INFO L93 Difference]: Finished difference Result 1331 states and 1910 transitions. [2022-11-02 21:05:33,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 21:05:33,747 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 0 states have call successors, (0), 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 70 [2022-11-02 21:05:33,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:33,751 INFO L225 Difference]: With dead ends: 1331 [2022-11-02 21:05:33,751 INFO L226 Difference]: Without dead ends: 958 [2022-11-02 21:05:33,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2022-11-02 21:05:33,753 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 283 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:33,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 376 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:05:33,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2022-11-02 21:05:33,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 599. [2022-11-02 21:05:33,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 598 states have (on average 1.4866220735785953) internal successors, (889), 598 states have internal predecessors, (889), 0 states have call successors, (0), 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 21:05:33,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 889 transitions. [2022-11-02 21:05:33,808 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 889 transitions. Word has length 70 [2022-11-02 21:05:33,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:33,808 INFO L495 AbstractCegarLoop]: Abstraction has 599 states and 889 transitions. [2022-11-02 21:05:33,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.9) internal successors, (89), 10 states have internal predecessors, (89), 0 states have call successors, (0), 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 21:05:33,809 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 889 transitions. [2022-11-02 21:05:33,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-02 21:05:33,810 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:33,810 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-02 21:05:33,825 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:34,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:34,021 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:34,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:34,022 INFO L85 PathProgramCache]: Analyzing trace with hash 464635188, now seen corresponding path program 1 times [2022-11-02 21:05:34,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:34,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [388692550] [2022-11-02 21:05:34,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:34,022 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:34,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:34,024 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:34,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-02 21:05:34,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:34,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 21:05:34,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:34,233 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 65 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-02 21:05:34,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:05:34,314 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 68 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-02 21:05:34,314 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:34,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [388692550] [2022-11-02 21:05:34,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [388692550] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:05:34,315 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:05:34,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2022-11-02 21:05:34,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760937981] [2022-11-02 21:05:34,316 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:05:34,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 21:05:34,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:34,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 21:05:34,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:05:34,317 INFO L87 Difference]: Start difference. First operand 599 states and 889 transitions. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:34,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:34,682 INFO L93 Difference]: Finished difference Result 1536 states and 2181 transitions. [2022-11-02 21:05:34,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 21:05:34,683 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-11-02 21:05:34,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:34,687 INFO L225 Difference]: With dead ends: 1536 [2022-11-02 21:05:34,687 INFO L226 Difference]: Without dead ends: 960 [2022-11-02 21:05:34,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-11-02 21:05:34,688 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 174 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:34,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 393 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:05:34,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2022-11-02 21:05:34,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 540. [2022-11-02 21:05:34,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 539 states have (on average 1.4267161410018554) internal successors, (769), 539 states have internal predecessors, (769), 0 states have call successors, (0), 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 21:05:34,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 769 transitions. [2022-11-02 21:05:34,750 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 769 transitions. Word has length 70 [2022-11-02 21:05:34,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:34,750 INFO L495 AbstractCegarLoop]: Abstraction has 540 states and 769 transitions. [2022-11-02 21:05:34,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:34,751 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 769 transitions. [2022-11-02 21:05:34,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-02 21:05:34,752 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:34,752 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 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 21:05:34,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:34,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:34,967 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:34,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:34,967 INFO L85 PathProgramCache]: Analyzing trace with hash 605183798, now seen corresponding path program 2 times [2022-11-02 21:05:34,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:34,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1799066502] [2022-11-02 21:05:34,968 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:05:34,968 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:34,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:34,969 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:34,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-02 21:05:35,052 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 21:05:35,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:05:35,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 41 conjunts are in the unsatisfiable core [2022-11-02 21:05:35,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:38,924 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:38,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:05:42,854 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:42,855 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:42,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1799066502] [2022-11-02 21:05:42,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1799066502] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:05:42,855 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:05:42,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 44 [2022-11-02 21:05:42,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498353352] [2022-11-02 21:05:42,856 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:05:42,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-11-02 21:05:42,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:42,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-11-02 21:05:42,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1750, Unknown=0, NotChecked=0, Total=1892 [2022-11-02 21:05:42,859 INFO L87 Difference]: Start difference. First operand 540 states and 769 transitions. Second operand has 44 states, 44 states have (on average 3.1363636363636362) internal successors, (138), 44 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:05,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:06:05,754 INFO L93 Difference]: Finished difference Result 1608 states and 2176 transitions. [2022-11-02 21:06:05,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-11-02 21:06:05,755 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 3.1363636363636362) internal successors, (138), 44 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-11-02 21:06:05,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:06:05,760 INFO L225 Difference]: With dead ends: 1608 [2022-11-02 21:06:05,760 INFO L226 Difference]: Without dead ends: 1500 [2022-11-02 21:06:05,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3336 ImplicationChecksByTransitivity, 19.4s TimeCoverageRelationStatistics Valid=2709, Invalid=13547, Unknown=0, NotChecked=0, Total=16256 [2022-11-02 21:06:05,767 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 2276 mSDsluCounter, 9362 mSDsCounter, 0 mSdLazyCounter, 5718 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2276 SdHoareTripleChecker+Valid, 9812 SdHoareTripleChecker+Invalid, 6003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 5718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:06:05,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2276 Valid, 9812 Invalid, 6003 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [285 Valid, 5718 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2022-11-02 21:06:05,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1500 states. [2022-11-02 21:06:05,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1500 to 895. [2022-11-02 21:06:05,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 895 states, 894 states have (on average 1.4407158836689038) internal successors, (1288), 894 states have internal predecessors, (1288), 0 states have call successors, (0), 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 21:06:05,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 1288 transitions. [2022-11-02 21:06:05,881 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 1288 transitions. Word has length 70 [2022-11-02 21:06:05,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:06:05,882 INFO L495 AbstractCegarLoop]: Abstraction has 895 states and 1288 transitions. [2022-11-02 21:06:05,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 3.1363636363636362) internal successors, (138), 44 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:05,883 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 1288 transitions. [2022-11-02 21:06:05,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-02 21:06:05,884 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:06:05,884 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 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 21:06:05,906 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-02 21:06:06,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:06:06,096 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:06:06,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:06:06,096 INFO L85 PathProgramCache]: Analyzing trace with hash 824038516, now seen corresponding path program 1 times [2022-11-02 21:06:06,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:06:06,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1477832563] [2022-11-02 21:06:06,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:06:06,097 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:06:06,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:06:06,099 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:06:06,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-02 21:06:06,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:06:06,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 21:06:06,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:06:06,395 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 58 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 21:06:06,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:06:06,482 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 58 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 21:06:06,482 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:06:06,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1477832563] [2022-11-02 21:06:06,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1477832563] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:06:06,483 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:06:06,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2022-11-02 21:06:06,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732927293] [2022-11-02 21:06:06,484 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:06:06,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:06:06,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:06:06,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:06:06,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:06:06,486 INFO L87 Difference]: Start difference. First operand 895 states and 1288 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 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 21:06:06,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:06:06,790 INFO L93 Difference]: Finished difference Result 1833 states and 2645 transitions. [2022-11-02 21:06:06,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:06:06,791 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 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 70 [2022-11-02 21:06:06,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:06:06,794 INFO L225 Difference]: With dead ends: 1833 [2022-11-02 21:06:06,795 INFO L226 Difference]: Without dead ends: 958 [2022-11-02 21:06:06,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 132 SyntacticMatches, 5 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:06:06,798 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 26 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 80 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:06:06,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 84 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 173 Invalid, 0 Unknown, 80 Unchecked, 0.2s Time] [2022-11-02 21:06:06,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2022-11-02 21:06:06,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 800. [2022-11-02 21:06:06,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 800 states, 799 states have (on average 1.4042553191489362) internal successors, (1122), 799 states have internal predecessors, (1122), 0 states have call successors, (0), 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 21:06:06,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 1122 transitions. [2022-11-02 21:06:06,938 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 1122 transitions. Word has length 70 [2022-11-02 21:06:06,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:06:06,940 INFO L495 AbstractCegarLoop]: Abstraction has 800 states and 1122 transitions. [2022-11-02 21:06:06,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 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 21:06:06,940 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 1122 transitions. [2022-11-02 21:06:06,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-02 21:06:06,942 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:06:06,943 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-02 21:06:06,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-02 21:06:07,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:06:07,158 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:06:07,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:06:07,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1235371034, now seen corresponding path program 1 times [2022-11-02 21:06:07,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:06:07,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1013401609] [2022-11-02 21:06:07,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:06:07,160 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:06:07,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:06:07,162 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:06:07,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-02 21:06:07,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:06:07,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-02 21:06:07,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:06:11,879 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:06:11,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:06:16,627 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:06:16,627 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:06:16,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1013401609] [2022-11-02 21:06:16,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1013401609] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:06:16,628 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:06:16,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 46 [2022-11-02 21:06:16,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624531237] [2022-11-02 21:06:16,629 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:06:16,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-02 21:06:16,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:06:16,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-02 21:06:16,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1921, Unknown=0, NotChecked=0, Total=2070 [2022-11-02 21:06:16,631 INFO L87 Difference]: Start difference. First operand 800 states and 1122 transitions. Second operand has 46 states, 46 states have (on average 3.1739130434782608) internal successors, (146), 46 states have internal predecessors, (146), 0 states have call successors, (0), 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 21:07:25,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:25,056 INFO L93 Difference]: Finished difference Result 2898 states and 3740 transitions. [2022-11-02 21:07:25,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 194 states. [2022-11-02 21:07:25,057 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.1739130434782608) internal successors, (146), 46 states have internal predecessors, (146), 0 states have call successors, (0), 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 74 [2022-11-02 21:07:25,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:25,064 INFO L225 Difference]: With dead ends: 2898 [2022-11-02 21:07:25,065 INFO L226 Difference]: Without dead ends: 2766 [2022-11-02 21:07:25,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17483 ImplicationChecksByTransitivity, 59.7s TimeCoverageRelationStatistics Valid=7317, Invalid=48615, Unknown=0, NotChecked=0, Total=55932 [2022-11-02 21:07:25,077 INFO L413 NwaCegarLoop]: 668 mSDtfsCounter, 2427 mSDsluCounter, 15223 mSDsCounter, 0 mSdLazyCounter, 8814 mSolverCounterSat, 465 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2427 SdHoareTripleChecker+Valid, 15891 SdHoareTripleChecker+Invalid, 9279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 465 IncrementalHoareTripleChecker+Valid, 8814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:25,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2427 Valid, 15891 Invalid, 9279 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [465 Valid, 8814 Invalid, 0 Unknown, 0 Unchecked, 13.0s Time] [2022-11-02 21:07:25,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2766 states. [2022-11-02 21:07:25,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2766 to 1439. [2022-11-02 21:07:25,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1439 states, 1438 states have (on average 1.3817802503477052) internal successors, (1987), 1438 states have internal predecessors, (1987), 0 states have call successors, (0), 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 21:07:25,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1439 states to 1439 states and 1987 transitions. [2022-11-02 21:07:25,295 INFO L78 Accepts]: Start accepts. Automaton has 1439 states and 1987 transitions. Word has length 74 [2022-11-02 21:07:25,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:25,296 INFO L495 AbstractCegarLoop]: Abstraction has 1439 states and 1987 transitions. [2022-11-02 21:07:25,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.1739130434782608) internal successors, (146), 46 states have internal predecessors, (146), 0 states have call successors, (0), 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 21:07:25,296 INFO L276 IsEmpty]: Start isEmpty. Operand 1439 states and 1987 transitions. [2022-11-02 21:07:25,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-02 21:07:25,309 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:25,310 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-02 21:07:25,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:25,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:07:25,523 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:25,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:25,523 INFO L85 PathProgramCache]: Analyzing trace with hash -877944922, now seen corresponding path program 1 times [2022-11-02 21:07:25,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:07:25,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [339222492] [2022-11-02 21:07:25,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:25,524 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:07:25,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:07:25,525 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:07:25,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-02 21:07:25,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:25,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 41 conjunts are in the unsatisfiable core [2022-11-02 21:07:25,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:29,832 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:07:29,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:07:33,919 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:07:33,919 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:07:33,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [339222492] [2022-11-02 21:07:33,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [339222492] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:07:33,920 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:07:33,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 46 [2022-11-02 21:07:33,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267779840] [2022-11-02 21:07:33,920 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:07:33,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-02 21:07:33,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:07:33,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-02 21:07:33,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=1933, Unknown=0, NotChecked=0, Total=2070 [2022-11-02 21:07:33,922 INFO L87 Difference]: Start difference. First operand 1439 states and 1987 transitions. Second operand has 46 states, 46 states have (on average 3.1739130434782608) internal successors, (146), 46 states have internal predecessors, (146), 0 states have call successors, (0), 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 21:08:08,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:08,739 INFO L93 Difference]: Finished difference Result 3466 states and 4575 transitions. [2022-11-02 21:08:08,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-11-02 21:08:08,741 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.1739130434782608) internal successors, (146), 46 states have internal predecessors, (146), 0 states have call successors, (0), 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 74 [2022-11-02 21:08:08,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:08,749 INFO L225 Difference]: With dead ends: 3466 [2022-11-02 21:08:08,749 INFO L226 Difference]: Without dead ends: 2713 [2022-11-02 21:08:08,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5091 ImplicationChecksByTransitivity, 28.1s TimeCoverageRelationStatistics Valid=2615, Invalid=18265, Unknown=0, NotChecked=0, Total=20880 [2022-11-02 21:08:08,753 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 1595 mSDsluCounter, 10798 mSDsCounter, 0 mSdLazyCounter, 6595 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1595 SdHoareTripleChecker+Valid, 11271 SdHoareTripleChecker+Invalid, 6820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 6595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:08,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1595 Valid, 11271 Invalid, 6820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 6595 Invalid, 0 Unknown, 0 Unchecked, 10.5s Time] [2022-11-02 21:08:08,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2713 states. [2022-11-02 21:08:09,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2713 to 1617. [2022-11-02 21:08:09,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1617 states, 1616 states have (on average 1.3836633663366336) internal successors, (2236), 1616 states have internal predecessors, (2236), 0 states have call successors, (0), 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 21:08:09,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1617 states to 1617 states and 2236 transitions. [2022-11-02 21:08:09,025 INFO L78 Accepts]: Start accepts. Automaton has 1617 states and 2236 transitions. Word has length 74 [2022-11-02 21:08:09,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:09,025 INFO L495 AbstractCegarLoop]: Abstraction has 1617 states and 2236 transitions. [2022-11-02 21:08:09,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.1739130434782608) internal successors, (146), 46 states have internal predecessors, (146), 0 states have call successors, (0), 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 21:08:09,026 INFO L276 IsEmpty]: Start isEmpty. Operand 1617 states and 2236 transitions. [2022-11-02 21:08:09,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-02 21:08:09,028 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:09,028 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:08:09,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:09,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:09,246 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:09,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:09,247 INFO L85 PathProgramCache]: Analyzing trace with hash -904299993, now seen corresponding path program 1 times [2022-11-02 21:08:09,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:09,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [117145754] [2022-11-02 21:08:09,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:09,247 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:09,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:09,249 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:09,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-02 21:08:09,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:09,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:08:09,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:09,624 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 23 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:08:09,625 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:08:09,816 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 23 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:08:09,816 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:09,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [117145754] [2022-11-02 21:08:09,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [117145754] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:08:09,816 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:08:09,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-11-02 21:08:09,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906535565] [2022-11-02 21:08:09,818 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:08:09,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 21:08:09,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:09,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 21:08:09,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-11-02 21:08:09,820 INFO L87 Difference]: Start difference. First operand 1617 states and 2236 transitions. Second operand has 12 states, 12 states have (on average 10.583333333333334) internal successors, (127), 12 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:10,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:10,426 INFO L93 Difference]: Finished difference Result 2346 states and 3223 transitions. [2022-11-02 21:08:10,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 21:08:10,427 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 10.583333333333334) internal successors, (127), 12 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-11-02 21:08:10,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:10,434 INFO L225 Difference]: With dead ends: 2346 [2022-11-02 21:08:10,434 INFO L226 Difference]: Without dead ends: 2293 [2022-11-02 21:08:10,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:08:10,435 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 70 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 68 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:10,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 133 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 209 Invalid, 0 Unknown, 68 Unchecked, 0.2s Time] [2022-11-02 21:08:10,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2293 states. [2022-11-02 21:08:10,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2293 to 2171. [2022-11-02 21:08:10,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2171 states, 2170 states have (on average 1.3912442396313365) internal successors, (3019), 2170 states have internal predecessors, (3019), 0 states have call successors, (0), 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 21:08:10,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2171 states to 2171 states and 3019 transitions. [2022-11-02 21:08:10,763 INFO L78 Accepts]: Start accepts. Automaton has 2171 states and 3019 transitions. Word has length 76 [2022-11-02 21:08:10,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:10,764 INFO L495 AbstractCegarLoop]: Abstraction has 2171 states and 3019 transitions. [2022-11-02 21:08:10,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.583333333333334) internal successors, (127), 12 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:10,764 INFO L276 IsEmpty]: Start isEmpty. Operand 2171 states and 3019 transitions. [2022-11-02 21:08:10,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-02 21:08:10,767 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:10,767 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:10,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:10,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:10,978 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:10,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:10,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1461199560, now seen corresponding path program 1 times [2022-11-02 21:08:10,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:10,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [778777526] [2022-11-02 21:08:10,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:10,979 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:10,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:10,980 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:10,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a6989d1-c4f7-4fb9-abd2-cf7e870b95b8/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-02 21:08:11,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:11,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-02 21:08:11,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:16,259 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:08:16,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:08:22,694 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:08:22,694 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:22,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [778777526] [2022-11-02 21:08:22,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [778777526] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:08:22,695 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:08:22,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2022-11-02 21:08:22,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758085432] [2022-11-02 21:08:22,695 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:08:22,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-11-02 21:08:22,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:22,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-11-02 21:08:22,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=2275, Unknown=0, NotChecked=0, Total=2450 [2022-11-02 21:08:22,699 INFO L87 Difference]: Start difference. First operand 2171 states and 3019 transitions. Second operand has 50 states, 50 states have (on average 3.04) internal successors, (152), 50 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)