./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_am2910_p1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/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_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_am2910_p1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 958b2cff64b8fceb0cc12cf5dd7a9dde08c134b5c0d92789485d456e6d4fd48a --- 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 19:55:57,986 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 19:55:57,988 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 19:55:58,022 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 19:55:58,023 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 19:55:58,024 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 19:55:58,026 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 19:55:58,028 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 19:55:58,031 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 19:55:58,032 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 19:55:58,033 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 19:55:58,035 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 19:55:58,035 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 19:55:58,037 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 19:55:58,038 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 19:55:58,040 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 19:55:58,041 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 19:55:58,042 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 19:55:58,044 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 19:55:58,047 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 19:55:58,048 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 19:55:58,050 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 19:55:58,052 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 19:55:58,053 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 19:55:58,057 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 19:55:58,058 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 19:55:58,058 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 19:55:58,059 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 19:55:58,060 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 19:55:58,061 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 19:55:58,062 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 19:55:58,063 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 19:55:58,064 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 19:55:58,065 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 19:55:58,066 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 19:55:58,067 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 19:55:58,068 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 19:55:58,068 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 19:55:58,069 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 19:55:58,070 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 19:55:58,071 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 19:55:58,072 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-02 19:55:58,119 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 19:55:58,119 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 19:55:58,120 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 19:55:58,120 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 19:55:58,121 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 19:55:58,121 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 19:55:58,122 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 19:55:58,123 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 19:55:58,123 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 19:55:58,123 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 19:55:58,124 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 19:55:58,129 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 19:55:58,131 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 19:55:58,131 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 19:55:58,132 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 19:55:58,132 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 19:55:58,132 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 19:55:58,133 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 19:55:58,133 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 19:55:58,133 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 19:55:58,134 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 19:55:58,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 19:55:58,134 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 19:55:58,135 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 19:55:58,136 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 19:55:58,136 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 19:55:58,138 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 19:55:58,138 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 19:55:58,140 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 19:55:58,141 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 19:55:58,141 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_78d520ec-9ba0-40f1-8719-ce803926f204/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 958b2cff64b8fceb0cc12cf5dd7a9dde08c134b5c0d92789485d456e6d4fd48a [2022-11-02 19:55:58,556 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 19:55:58,593 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 19:55:58,596 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 19:55:58,598 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 19:55:58,599 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 19:55:58,601 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_am2910_p1.c [2022-11-02 19:55:58,683 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/data/cf42c10c7/46fcf0be6579410d9774337e8e27fef0/FLAG8965f919c [2022-11-02 19:55:59,477 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 19:55:59,478 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_am2910_p1.c [2022-11-02 19:55:59,499 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/data/cf42c10c7/46fcf0be6579410d9774337e8e27fef0/FLAG8965f919c [2022-11-02 19:55:59,643 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/data/cf42c10c7/46fcf0be6579410d9774337e8e27fef0 [2022-11-02 19:55:59,646 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 19:55:59,647 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 19:55:59,650 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 19:55:59,650 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 19:55:59,654 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 19:55:59,655 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 07:55:59" (1/1) ... [2022-11-02 19:55:59,657 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f1b5221 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:55:59, skipping insertion in model container [2022-11-02 19:55:59,657 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 07:55:59" (1/1) ... [2022-11-02 19:55:59,667 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 19:55:59,735 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 19:56:00,078 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_78d520ec-9ba0-40f1-8719-ce803926f204/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_am2910_p1.c[1107,1120] [2022-11-02 19:56:00,671 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 19:56:00,677 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 19:56:00,691 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_78d520ec-9ba0-40f1-8719-ce803926f204/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_am2910_p1.c[1107,1120] [2022-11-02 19:56:00,915 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 19:56:00,931 INFO L208 MainTranslator]: Completed translation [2022-11-02 19:56:00,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:00 WrapperNode [2022-11-02 19:56:00,932 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 19:56:00,934 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 19:56:00,934 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 19:56:00,934 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 19:56:00,944 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:00" (1/1) ... [2022-11-02 19:56:01,030 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:00" (1/1) ... [2022-11-02 19:56:01,340 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2154 [2022-11-02 19:56:01,340 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 19:56:01,341 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 19:56:01,342 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 19:56:01,342 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 19:56:01,357 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:00" (1/1) ... [2022-11-02 19:56:01,357 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:00" (1/1) ... [2022-11-02 19:56:01,399 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:00" (1/1) ... [2022-11-02 19:56:01,412 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:00" (1/1) ... [2022-11-02 19:56:01,547 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:00" (1/1) ... [2022-11-02 19:56:01,653 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:00" (1/1) ... [2022-11-02 19:56:01,677 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:00" (1/1) ... [2022-11-02 19:56:01,693 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:00" (1/1) ... [2022-11-02 19:56:01,742 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 19:56:01,743 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 19:56:01,743 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 19:56:01,743 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 19:56:01,745 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:00" (1/1) ... [2022-11-02 19:56:01,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 19:56:01,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:56:01,795 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 19:56:01,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 19:56:01,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 19:56:01,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 19:56:02,545 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 19:56:02,548 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 19:56:08,143 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 19:56:08,153 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 19:56:08,153 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 19:56:08,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 07:56:08 BoogieIcfgContainer [2022-11-02 19:56:08,156 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 19:56:08,158 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 19:56:08,158 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 19:56:08,162 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 19:56:08,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 07:55:59" (1/3) ... [2022-11-02 19:56:08,163 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46b0f699 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 07:56:08, skipping insertion in model container [2022-11-02 19:56:08,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:00" (2/3) ... [2022-11-02 19:56:08,164 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46b0f699 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 07:56:08, skipping insertion in model container [2022-11-02 19:56:08,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 07:56:08" (3/3) ... [2022-11-02 19:56:08,165 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_arrays_am2910_p1.c [2022-11-02 19:56:08,185 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 19:56:08,185 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 19:56:08,262 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 19:56:08,279 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;@2bb12f13, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 19:56:08,279 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 19:56:08,287 INFO L276 IsEmpty]: Start isEmpty. Operand has 211 states, 209 states have (on average 1.4976076555023923) internal successors, (313), 210 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:08,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-02 19:56:08,301 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:56:08,303 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:56:08,304 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:56:08,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:56:08,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1799458747, now seen corresponding path program 1 times [2022-11-02 19:56:08,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:56:08,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476594705] [2022-11-02 19:56:08,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:56:08,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:56:08,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:09,206 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 19:56:09,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:56:09,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476594705] [2022-11-02 19:56:09,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476594705] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:56:09,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:56:09,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 19:56:09,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818227132] [2022-11-02 19:56:09,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:56:09,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 19:56:09,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:56:09,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 19:56:09,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 19:56:09,269 INFO L87 Difference]: Start difference. First operand has 211 states, 209 states have (on average 1.4976076555023923) internal successors, (313), 210 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:09,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:56:09,474 INFO L93 Difference]: Finished difference Result 417 states and 624 transitions. [2022-11-02 19:56:09,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 19:56:09,484 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2022-11-02 19:56:09,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:56:09,512 INFO L225 Difference]: With dead ends: 417 [2022-11-02 19:56:09,512 INFO L226 Difference]: Without dead ends: 208 [2022-11-02 19:56:09,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:56:09,524 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 607 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 607 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:56:09,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [607 Valid, 299 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 19:56:09,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-11-02 19:56:09,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 207. [2022-11-02 19:56:09,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.4854368932038835) internal successors, (306), 206 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:09,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 306 transitions. [2022-11-02 19:56:09,581 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 306 transitions. Word has length 19 [2022-11-02 19:56:09,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:56:09,582 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 306 transitions. [2022-11-02 19:56:09,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:09,582 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 306 transitions. [2022-11-02 19:56:09,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-02 19:56:09,583 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:56:09,584 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:56:09,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 19:56:09,584 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:56:09,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:56:09,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1474440195, now seen corresponding path program 1 times [2022-11-02 19:56:09,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:56:09,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212150903] [2022-11-02 19:56:09,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:56:09,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:56:09,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:09,980 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 19:56:09,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:56:09,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212150903] [2022-11-02 19:56:09,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212150903] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:56:09,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:56:09,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 19:56:09,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931970982] [2022-11-02 19:56:09,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:56:09,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 19:56:09,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:56:09,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 19:56:09,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 19:56:09,986 INFO L87 Difference]: Start difference. First operand 207 states and 306 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:10,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:56:10,188 INFO L93 Difference]: Finished difference Result 415 states and 613 transitions. [2022-11-02 19:56:10,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 19:56:10,189 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2022-11-02 19:56:10,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:56:10,193 INFO L225 Difference]: With dead ends: 415 [2022-11-02 19:56:10,193 INFO L226 Difference]: Without dead ends: 210 [2022-11-02 19:56:10,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:56:10,196 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 603 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 603 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 19:56:10,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [603 Valid, 300 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 19:56:10,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2022-11-02 19:56:10,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 207. [2022-11-02 19:56:10,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.4805825242718447) internal successors, (305), 206 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:10,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 305 transitions. [2022-11-02 19:56:10,217 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 305 transitions. Word has length 19 [2022-11-02 19:56:10,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:56:10,218 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 305 transitions. [2022-11-02 19:56:10,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:10,219 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 305 transitions. [2022-11-02 19:56:10,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-02 19:56:10,220 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:56:10,220 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:56:10,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 19:56:10,221 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:56:10,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:56:10,222 INFO L85 PathProgramCache]: Analyzing trace with hash 463322945, now seen corresponding path program 1 times [2022-11-02 19:56:10,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:56:10,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048097436] [2022-11-02 19:56:10,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:56:10,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:56:10,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:10,622 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 19:56:10,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:56:10,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048097436] [2022-11-02 19:56:10,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048097436] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:56:10,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:56:10,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 19:56:10,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219176246] [2022-11-02 19:56:10,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:56:10,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 19:56:10,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:56:10,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 19:56:10,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 19:56:10,632 INFO L87 Difference]: Start difference. First operand 207 states and 305 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:10,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:56:10,758 INFO L93 Difference]: Finished difference Result 417 states and 613 transitions. [2022-11-02 19:56:10,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 19:56:10,759 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2022-11-02 19:56:10,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:56:10,761 INFO L225 Difference]: With dead ends: 417 [2022-11-02 19:56:10,761 INFO L226 Difference]: Without dead ends: 212 [2022-11-02 19:56:10,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:56:10,764 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 599 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 599 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:56:10,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [599 Valid, 301 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 19:56:10,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-11-02 19:56:10,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 207. [2022-11-02 19:56:10,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.4757281553398058) internal successors, (304), 206 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:10,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 304 transitions. [2022-11-02 19:56:10,780 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 304 transitions. Word has length 19 [2022-11-02 19:56:10,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:56:10,781 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 304 transitions. [2022-11-02 19:56:10,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:10,781 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 304 transitions. [2022-11-02 19:56:10,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-02 19:56:10,782 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:56:10,782 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:56:10,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 19:56:10,783 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:56:10,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:56:10,783 INFO L85 PathProgramCache]: Analyzing trace with hash 721488383, now seen corresponding path program 1 times [2022-11-02 19:56:10,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:56:10,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100718154] [2022-11-02 19:56:10,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:56:10,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:56:10,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:11,087 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 19:56:11,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:56:11,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100718154] [2022-11-02 19:56:11,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100718154] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:56:11,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:56:11,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 19:56:11,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992124934] [2022-11-02 19:56:11,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:56:11,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 19:56:11,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:56:11,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 19:56:11,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 19:56:11,093 INFO L87 Difference]: Start difference. First operand 207 states and 304 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:11,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:56:11,220 INFO L93 Difference]: Finished difference Result 419 states and 613 transitions. [2022-11-02 19:56:11,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 19:56:11,221 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2022-11-02 19:56:11,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:56:11,223 INFO L225 Difference]: With dead ends: 419 [2022-11-02 19:56:11,223 INFO L226 Difference]: Without dead ends: 214 [2022-11-02 19:56:11,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:56:11,225 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 595 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 595 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:56:11,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [595 Valid, 302 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 19:56:11,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2022-11-02 19:56:11,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 207. [2022-11-02 19:56:11,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.470873786407767) internal successors, (303), 206 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:11,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 303 transitions. [2022-11-02 19:56:11,238 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 303 transitions. Word has length 19 [2022-11-02 19:56:11,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:56:11,239 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 303 transitions. [2022-11-02 19:56:11,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:11,239 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 303 transitions. [2022-11-02 19:56:11,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-02 19:56:11,240 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:56:11,240 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:56:11,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 19:56:11,241 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:56:11,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:56:11,242 INFO L85 PathProgramCache]: Analyzing trace with hash 328461373, now seen corresponding path program 1 times [2022-11-02 19:56:11,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:56:11,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352287856] [2022-11-02 19:56:11,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:56:11,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:56:11,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:11,581 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 19:56:11,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:56:11,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352287856] [2022-11-02 19:56:11,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352287856] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:56:11,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:56:11,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 19:56:11,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258103597] [2022-11-02 19:56:11,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:56:11,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 19:56:11,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:56:11,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 19:56:11,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 19:56:11,587 INFO L87 Difference]: Start difference. First operand 207 states and 303 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:11,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:56:11,716 INFO L93 Difference]: Finished difference Result 421 states and 613 transitions. [2022-11-02 19:56:11,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 19:56:11,717 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2022-11-02 19:56:11,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:56:11,718 INFO L225 Difference]: With dead ends: 421 [2022-11-02 19:56:11,718 INFO L226 Difference]: Without dead ends: 216 [2022-11-02 19:56:11,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:56:11,722 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 591 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 591 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:56:11,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [591 Valid, 303 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 19:56:11,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2022-11-02 19:56:11,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 207. [2022-11-02 19:56:11,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.4660194174757282) internal successors, (302), 206 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:11,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 302 transitions. [2022-11-02 19:56:11,750 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 302 transitions. Word has length 19 [2022-11-02 19:56:11,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:56:11,751 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 302 transitions. [2022-11-02 19:56:11,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:11,751 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 302 transitions. [2022-11-02 19:56:11,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-02 19:56:11,752 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:56:11,752 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:56:11,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 19:56:11,753 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:56:11,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:56:11,759 INFO L85 PathProgramCache]: Analyzing trace with hash -480885253, now seen corresponding path program 1 times [2022-11-02 19:56:11,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:56:11,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912725700] [2022-11-02 19:56:11,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:56:11,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:56:11,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:12,019 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 19:56:12,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:56:12,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912725700] [2022-11-02 19:56:12,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912725700] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:56:12,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:56:12,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 19:56:12,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196642509] [2022-11-02 19:56:12,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:56:12,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 19:56:12,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:56:12,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 19:56:12,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 19:56:12,028 INFO L87 Difference]: Start difference. First operand 207 states and 302 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:12,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:56:12,125 INFO L93 Difference]: Finished difference Result 423 states and 613 transitions. [2022-11-02 19:56:12,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 19:56:12,126 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2022-11-02 19:56:12,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:56:12,127 INFO L225 Difference]: With dead ends: 423 [2022-11-02 19:56:12,127 INFO L226 Difference]: Without dead ends: 218 [2022-11-02 19:56:12,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:56:12,132 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 587 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 587 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:56:12,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [587 Valid, 304 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 19:56:12,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2022-11-02 19:56:12,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 207. [2022-11-02 19:56:12,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.4611650485436893) internal successors, (301), 206 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:12,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 301 transitions. [2022-11-02 19:56:12,148 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 301 transitions. Word has length 19 [2022-11-02 19:56:12,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:56:12,148 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 301 transitions. [2022-11-02 19:56:12,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:12,149 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 301 transitions. [2022-11-02 19:56:12,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-02 19:56:12,149 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:56:12,149 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:56:12,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 19:56:12,150 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:56:12,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:56:12,150 INFO L85 PathProgramCache]: Analyzing trace with hash -423626951, now seen corresponding path program 1 times [2022-11-02 19:56:12,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:56:12,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685233292] [2022-11-02 19:56:12,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:56:12,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:56:12,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:12,443 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 19:56:12,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:56:12,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685233292] [2022-11-02 19:56:12,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685233292] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:56:12,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:56:12,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 19:56:12,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15803423] [2022-11-02 19:56:12,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:56:12,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 19:56:12,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:56:12,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 19:56:12,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 19:56:12,445 INFO L87 Difference]: Start difference. First operand 207 states and 301 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:12,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:56:12,567 INFO L93 Difference]: Finished difference Result 425 states and 613 transitions. [2022-11-02 19:56:12,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 19:56:12,568 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2022-11-02 19:56:12,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:56:12,570 INFO L225 Difference]: With dead ends: 425 [2022-11-02 19:56:12,570 INFO L226 Difference]: Without dead ends: 220 [2022-11-02 19:56:12,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:56:12,571 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 583 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:56:12,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [583 Valid, 305 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 19:56:12,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2022-11-02 19:56:12,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 207. [2022-11-02 19:56:12,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.4563106796116505) internal successors, (300), 206 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:12,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 300 transitions. [2022-11-02 19:56:12,579 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 300 transitions. Word has length 19 [2022-11-02 19:56:12,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:56:12,580 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 300 transitions. [2022-11-02 19:56:12,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:12,580 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 300 transitions. [2022-11-02 19:56:12,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-02 19:56:12,581 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:56:12,581 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:56:12,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 19:56:12,582 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:56:12,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:56:12,582 INFO L85 PathProgramCache]: Analyzing trace with hash -423567369, now seen corresponding path program 1 times [2022-11-02 19:56:12,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:56:12,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815503245] [2022-11-02 19:56:12,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:56:12,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:56:12,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 19:56:12,707 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 19:56:12,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 19:56:12,937 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 19:56:12,937 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 19:56:12,938 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-02 19:56:12,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 19:56:12,949 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:56:12,954 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 19:56:13,057 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-02 19:56:13,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 07:56:13 BoogieIcfgContainer [2022-11-02 19:56:13,093 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 19:56:13,094 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 19:56:13,094 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 19:56:13,094 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 19:56:13,095 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 07:56:08" (3/4) ... [2022-11-02 19:56:13,099 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-02 19:56:13,099 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 19:56:13,100 INFO L158 Benchmark]: Toolchain (without parser) took 13452.33ms. Allocated memory was 159.4MB in the beginning and 478.2MB in the end (delta: 318.8MB). Free memory was 114.1MB in the beginning and 323.3MB in the end (delta: -209.2MB). Peak memory consumption was 109.6MB. Max. memory is 16.1GB. [2022-11-02 19:56:13,100 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 159.4MB. Free memory was 134.5MB in the beginning and 134.4MB in the end (delta: 88.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 19:56:13,100 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1283.12ms. Allocated memory is still 159.4MB. Free memory was 114.0MB in the beginning and 83.4MB in the end (delta: 30.6MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2022-11-02 19:56:13,101 INFO L158 Benchmark]: Boogie Procedure Inliner took 406.96ms. Allocated memory is still 159.4MB. Free memory was 83.4MB in the beginning and 104.2MB in the end (delta: -20.8MB). Peak memory consumption was 45.2MB. Max. memory is 16.1GB. [2022-11-02 19:56:13,102 INFO L158 Benchmark]: Boogie Preprocessor took 400.64ms. Allocated memory was 159.4MB in the beginning and 245.4MB in the end (delta: 86.0MB). Free memory was 104.2MB in the beginning and 186.0MB in the end (delta: -81.8MB). Peak memory consumption was 32.1MB. Max. memory is 16.1GB. [2022-11-02 19:56:13,102 INFO L158 Benchmark]: RCFGBuilder took 6413.15ms. Allocated memory was 245.4MB in the beginning and 478.2MB in the end (delta: 232.8MB). Free memory was 186.0MB in the beginning and 272.2MB in the end (delta: -86.2MB). Peak memory consumption was 231.7MB. Max. memory is 16.1GB. [2022-11-02 19:56:13,103 INFO L158 Benchmark]: TraceAbstraction took 4935.27ms. Allocated memory is still 478.2MB. Free memory was 271.2MB in the beginning and 324.4MB in the end (delta: -53.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 19:56:13,103 INFO L158 Benchmark]: Witness Printer took 5.10ms. Allocated memory is still 478.2MB. Free memory is still 323.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 19:56:13,106 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 159.4MB. Free memory was 134.5MB in the beginning and 134.4MB in the end (delta: 88.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1283.12ms. Allocated memory is still 159.4MB. Free memory was 114.0MB in the beginning and 83.4MB in the end (delta: 30.6MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 406.96ms. Allocated memory is still 159.4MB. Free memory was 83.4MB in the beginning and 104.2MB in the end (delta: -20.8MB). Peak memory consumption was 45.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 400.64ms. Allocated memory was 159.4MB in the beginning and 245.4MB in the end (delta: 86.0MB). Free memory was 104.2MB in the beginning and 186.0MB in the end (delta: -81.8MB). Peak memory consumption was 32.1MB. Max. memory is 16.1GB. * RCFGBuilder took 6413.15ms. Allocated memory was 245.4MB in the beginning and 478.2MB in the end (delta: 232.8MB). Free memory was 186.0MB in the beginning and 272.2MB in the end (delta: -86.2MB). Peak memory consumption was 231.7MB. Max. memory is 16.1GB. * TraceAbstraction took 4935.27ms. Allocated memory is still 478.2MB. Free memory was 271.2MB in the beginning and 324.4MB in the end (delta: -53.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.10ms. Allocated memory is still 478.2MB. Free memory is still 323.3MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 203, overapproximation of bitwiseOr at line 198, overapproximation of bitwiseAnd at line 185. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 12); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (12 - 1); [L28] const SORT_6 mask_SORT_6 = (SORT_6)-1 >> (sizeof(SORT_6) * 8 - 1); [L29] const SORT_6 msb_SORT_6 = (SORT_6)1 << (1 - 1); [L31] const SORT_11 mask_SORT_11 = (SORT_11)-1 >> (sizeof(SORT_11) * 8 - 4); [L32] const SORT_11 msb_SORT_11 = (SORT_11)1 << (4 - 1); [L34] const SORT_37 mask_SORT_37 = (SORT_37)-1 >> (sizeof(SORT_37) * 8 - 32); [L35] const SORT_37 msb_SORT_37 = (SORT_37)1 << (32 - 1); [L37] const SORT_41 mask_SORT_41 = (SORT_41)-1 >> (sizeof(SORT_41) * 8 - 3); [L38] const SORT_41 msb_SORT_41 = (SORT_41)1 << (3 - 1); [L40] const SORT_289 mask_SORT_289 = (SORT_289)-1 >> (sizeof(SORT_289) * 8 - 2); [L41] const SORT_289 msb_SORT_289 = (SORT_289)1 << (2 - 1); [L43] const SORT_293 mask_SORT_293 = (SORT_293)-1 >> (sizeof(SORT_293) * 8 - 5); [L44] const SORT_293 msb_SORT_293 = (SORT_293)1 << (5 - 1); [L46] const SORT_295 mask_SORT_295 = (SORT_295)-1 >> (sizeof(SORT_295) * 8 - 6); [L47] const SORT_295 msb_SORT_295 = (SORT_295)1 << (6 - 1); [L49] const SORT_297 mask_SORT_297 = (SORT_297)-1 >> (sizeof(SORT_297) * 8 - 7); [L50] const SORT_297 msb_SORT_297 = (SORT_297)1 << (7 - 1); [L52] const SORT_299 mask_SORT_299 = (SORT_299)-1 >> (sizeof(SORT_299) * 8 - 8); [L53] const SORT_299 msb_SORT_299 = (SORT_299)1 << (8 - 1); [L55] const SORT_301 mask_SORT_301 = (SORT_301)-1 >> (sizeof(SORT_301) * 8 - 9); [L56] const SORT_301 msb_SORT_301 = (SORT_301)1 << (9 - 1); [L58] const SORT_303 mask_SORT_303 = (SORT_303)-1 >> (sizeof(SORT_303) * 8 - 10); [L59] const SORT_303 msb_SORT_303 = (SORT_303)1 << (10 - 1); [L61] const SORT_305 mask_SORT_305 = (SORT_305)-1 >> (sizeof(SORT_305) * 8 - 11); [L62] const SORT_305 msb_SORT_305 = (SORT_305)1 << (11 - 1); [L64] const SORT_1 var_16 = 0; [L65] const SORT_6 var_21 = 0; [L66] const SORT_37 var_39 = 0; [L67] const SORT_41 var_42 = 0; [L68] const SORT_41 var_45 = 6; [L69] const SORT_41 var_47 = 7; [L70] const SORT_6 var_53 = 1; [L71] const SORT_11 var_57 = 2; [L72] const SORT_11 var_62 = 9; [L73] const SORT_11 var_70 = 15; [L74] const SORT_11 var_75 = 1; [L75] const SORT_11 var_77 = 3; [L76] const SORT_11 var_80 = 5; [L77] const SORT_11 var_83 = 7; [L78] const SORT_11 var_86 = 11; [L79] const SORT_11 var_108 = 8; [L80] const SORT_11 var_112 = 10; [L81] const SORT_11 var_116 = 13; [L82] const SORT_11 var_127 = 4; [L83] const SORT_11 var_129 = 12; [L84] const SORT_11 var_132 = 14; [L85] const SORT_11 var_138 = 6; [L86] const SORT_11 var_165 = 0; [L87] const SORT_41 var_209 = 1; [L88] const SORT_41 var_211 = 5; [L89] const SORT_1 var_229 = 4095; [L90] const SORT_1 var_569 = 1; [L91] const SORT_305 var_577 = 0; [L93] SORT_1 input_2; [L94] SORT_1 input_3; [L95] SORT_1 input_4; [L96] SORT_1 input_5; [L97] SORT_6 input_7; [L98] SORT_6 input_8; [L99] SORT_6 input_9; [L100] SORT_1 input_10; [L101] SORT_11 input_12; [L102] SORT_6 input_13; [L103] SORT_6 input_14; [L104] SORT_6 input_15; [L105] SORT_1 input_216; [L106] SORT_41 input_219; [L108] SORT_1 state_17 = __VERIFIER_nondet_ushort() & mask_SORT_1; [L109] SORT_1 state_19 = __VERIFIER_nondet_ushort() & mask_SORT_1; [L110] SORT_1 state_23 = __VERIFIER_nondet_ushort() & mask_SORT_1; [L111] SORT_1 state_25 = __VERIFIER_nondet_ushort() & mask_SORT_1; [L112] SORT_1 state_29 = __VERIFIER_nondet_ushort() & mask_SORT_1; [L113] SORT_1 state_31 = __VERIFIER_nondet_ushort() & mask_SORT_1; [L114] SORT_41 state_43 = __VERIFIER_nondet_uchar() & mask_SORT_41; [L115] SORT_1 state_59 = __VERIFIER_nondet_ushort() & mask_SORT_1; [L116] SORT_1 state_125 = __VERIFIER_nondet_ushort() & mask_SORT_1; [L118] SORT_1 init_18_arg_1 = var_16; [L119] state_17 = init_18_arg_1 [L120] SORT_1 init_20_arg_1 = var_16; [L121] state_19 = init_20_arg_1 [L122] SORT_1 init_24_arg_1 = var_16; [L123] state_23 = init_24_arg_1 [L124] SORT_1 init_26_arg_1 = var_16; [L125] state_25 = init_26_arg_1 [L126] SORT_1 init_30_arg_1 = var_16; [L127] state_29 = init_30_arg_1 [L128] SORT_1 init_32_arg_1 = var_16; [L129] state_31 = init_32_arg_1 [L130] SORT_41 init_44_arg_1 = var_42; [L131] state_43 = init_44_arg_1 [L132] SORT_1 init_60_arg_1 = var_16; [L133] state_59 = init_60_arg_1 [L134] SORT_1 init_126_arg_1 = var_16; [L135] state_125 = init_126_arg_1 VAL [init_126_arg_1=0, init_18_arg_1=0, init_20_arg_1=0, init_24_arg_1=0, init_26_arg_1=0, init_30_arg_1=0, init_32_arg_1=0, init_44_arg_1=0, init_60_arg_1=0, mask_SORT_1=4095, mask_SORT_11=15, mask_SORT_289=3, mask_SORT_293=31, mask_SORT_295=63, mask_SORT_297=127, mask_SORT_299=255, mask_SORT_301=511, mask_SORT_303=1023, mask_SORT_305=2047, mask_SORT_37=4294967295, mask_SORT_41=7, mask_SORT_6=1, msb_SORT_1=2048, msb_SORT_11=8, msb_SORT_289=2, msb_SORT_293=16, msb_SORT_295=32, msb_SORT_297=64, msb_SORT_299=128, msb_SORT_301=256, msb_SORT_303=512, msb_SORT_305=1024, msb_SORT_37=2147483648, msb_SORT_41=4, msb_SORT_6=1, state_125=0, state_17=0, state_19=0, state_23=0, state_25=0, state_29=0, state_31=0, state_43=0, state_59=0, var_108=8, var_112=10, var_116=13, var_127=4, var_129=12, var_132=14, var_138=6, var_16=0, var_165=0, var_209=1, var_21=0, var_211=5, var_229=4095, var_39=0, var_42=0, var_45=6, var_47=7, var_53=1, var_569=1, var_57=2, var_577=0, var_62=9, var_70=15, var_75=1, var_77=3, var_80=5, var_83=7, var_86=11] [L138] input_2 = __VERIFIER_nondet_ushort() [L139] input_3 = __VERIFIER_nondet_ushort() [L140] input_4 = __VERIFIER_nondet_ushort() [L141] input_5 = __VERIFIER_nondet_ushort() [L142] input_7 = __VERIFIER_nondet_uchar() [L143] input_8 = __VERIFIER_nondet_uchar() [L144] input_9 = __VERIFIER_nondet_uchar() [L145] input_9 = input_9 & mask_SORT_6 [L146] input_10 = __VERIFIER_nondet_ushort() [L147] input_12 = __VERIFIER_nondet_uchar() [L148] input_12 = input_12 & mask_SORT_11 [L149] input_13 = __VERIFIER_nondet_uchar() [L150] input_14 = __VERIFIER_nondet_uchar() [L151] input_15 = __VERIFIER_nondet_uchar() [L152] input_216 = __VERIFIER_nondet_ushort() [L153] input_219 = __VERIFIER_nondet_uchar() [L156] SORT_6 var_34_arg_0 = var_21; [L157] SORT_1 var_34_arg_1 = input_5; [L158] SORT_1 var_34_arg_2 = input_4; VAL [init_126_arg_1=0, init_18_arg_1=0, init_20_arg_1=0, init_24_arg_1=0, init_26_arg_1=0, init_30_arg_1=0, init_32_arg_1=0, init_44_arg_1=0, init_60_arg_1=0, input_10=3, input_12=0, input_13=7, input_14=9, input_15=5, input_2=1, input_216=4, input_219=2, input_3=10, input_4=3, input_5=6, input_7=11, input_8=8, input_9=0, mask_SORT_1=4095, mask_SORT_11=15, mask_SORT_289=3, mask_SORT_293=31, mask_SORT_295=63, mask_SORT_297=127, mask_SORT_299=255, mask_SORT_301=511, mask_SORT_303=1023, mask_SORT_305=2047, mask_SORT_37=4294967295, mask_SORT_41=7, mask_SORT_6=1, msb_SORT_1=2048, msb_SORT_11=8, msb_SORT_289=2, msb_SORT_293=16, msb_SORT_295=32, msb_SORT_297=64, msb_SORT_299=128, msb_SORT_301=256, msb_SORT_303=512, msb_SORT_305=1024, msb_SORT_37=2147483648, msb_SORT_41=4, msb_SORT_6=1, state_125=0, state_17=0, state_19=0, state_23=0, state_25=0, state_29=0, state_31=0, state_43=0, state_59=0, var_108=8, var_112=10, var_116=13, var_127=4, var_129=12, var_132=14, var_138=6, var_16=0, var_165=0, var_209=1, var_21=0, var_211=5, var_229=4095, var_34_arg_0=0, var_34_arg_1=6, var_34_arg_2=3, var_39=0, var_42=0, var_45=6, var_47=7, var_53=1, var_569=1, var_57=2, var_577=0, var_62=9, var_70=15, var_75=1, var_77=3, var_80=5, var_83=7, var_86=11] [L159] EXPR var_34_arg_0 ? var_34_arg_1 : var_34_arg_2 VAL [init_126_arg_1=0, init_18_arg_1=0, init_20_arg_1=0, init_24_arg_1=0, init_26_arg_1=0, init_30_arg_1=0, init_32_arg_1=0, init_44_arg_1=0, init_60_arg_1=0, input_10=3, input_12=0, input_13=7, input_14=9, input_15=5, input_2=1, input_216=4, input_219=2, input_3=10, input_4=3, input_5=6, input_7=11, input_8=8, input_9=0, mask_SORT_1=4095, mask_SORT_11=15, mask_SORT_289=3, mask_SORT_293=31, mask_SORT_295=63, mask_SORT_297=127, mask_SORT_299=255, mask_SORT_301=511, mask_SORT_303=1023, mask_SORT_305=2047, mask_SORT_37=4294967295, mask_SORT_41=7, mask_SORT_6=1, msb_SORT_1=2048, msb_SORT_11=8, msb_SORT_289=2, msb_SORT_293=16, msb_SORT_295=32, msb_SORT_297=64, msb_SORT_299=128, msb_SORT_301=256, msb_SORT_303=512, msb_SORT_305=1024, msb_SORT_37=2147483648, msb_SORT_41=4, msb_SORT_6=1, state_125=0, state_17=0, state_19=0, state_23=0, state_25=0, state_29=0, state_31=0, state_43=0, state_59=0, var_108=8, var_112=10, var_116=13, var_127=4, var_129=12, var_132=14, var_138=6, var_16=0, var_165=0, var_209=1, var_21=0, var_211=5, var_229=4095, var_34_arg_0=0, var_34_arg_0 ? var_34_arg_1 : var_34_arg_2=3, var_34_arg_1=6, var_34_arg_2=3, var_39=0, var_42=0, var_45=6, var_47=7, var_53=1, var_569=1, var_57=2, var_577=0, var_62=9, var_70=15, var_75=1, var_77=3, var_80=5, var_83=7, var_86=11] [L159] SORT_1 var_34 = var_34_arg_0 ? var_34_arg_1 : var_34_arg_2; [L160] SORT_6 var_33_arg_0 = var_21; [L161] SORT_1 var_33_arg_1 = state_31; [L162] SORT_1 var_33_arg_2 = state_29; VAL [init_126_arg_1=0, init_18_arg_1=0, init_20_arg_1=0, init_24_arg_1=0, init_26_arg_1=0, init_30_arg_1=0, init_32_arg_1=0, init_44_arg_1=0, init_60_arg_1=0, input_10=3, input_12=0, input_13=7, input_14=9, input_15=5, input_2=1, input_216=4, input_219=2, input_3=10, input_4=3, input_5=6, input_7=11, input_8=8, input_9=0, mask_SORT_1=4095, mask_SORT_11=15, mask_SORT_289=3, mask_SORT_293=31, mask_SORT_295=63, mask_SORT_297=127, mask_SORT_299=255, mask_SORT_301=511, mask_SORT_303=1023, mask_SORT_305=2047, mask_SORT_37=4294967295, mask_SORT_41=7, mask_SORT_6=1, msb_SORT_1=2048, msb_SORT_11=8, msb_SORT_289=2, msb_SORT_293=16, msb_SORT_295=32, msb_SORT_297=64, msb_SORT_299=128, msb_SORT_301=256, msb_SORT_303=512, msb_SORT_305=1024, msb_SORT_37=2147483648, msb_SORT_41=4, msb_SORT_6=1, state_125=0, state_17=0, state_19=0, state_23=0, state_25=0, state_29=0, state_31=0, state_43=0, state_59=0, var_108=8, var_112=10, var_116=13, var_127=4, var_129=12, var_132=14, var_138=6, var_16=0, var_165=0, var_209=1, var_21=0, var_211=5, var_229=4095, var_33_arg_0=0, var_33_arg_1=0, var_33_arg_2=0, var_34=3, var_34_arg_0=0, var_34_arg_1=6, var_34_arg_2=3, var_39=0, var_42=0, var_45=6, var_47=7, var_53=1, var_569=1, var_57=2, var_577=0, var_62=9, var_70=15, var_75=1, var_77=3, var_80=5, var_83=7, var_86=11] [L163] EXPR var_33_arg_0 ? var_33_arg_1 : var_33_arg_2 VAL [init_126_arg_1=0, init_18_arg_1=0, init_20_arg_1=0, init_24_arg_1=0, init_26_arg_1=0, init_30_arg_1=0, init_32_arg_1=0, init_44_arg_1=0, init_60_arg_1=0, input_10=3, input_12=0, input_13=7, input_14=9, input_15=5, input_2=1, input_216=4, input_219=2, input_3=10, input_4=3, input_5=6, input_7=11, input_8=8, input_9=0, mask_SORT_1=4095, mask_SORT_11=15, mask_SORT_289=3, mask_SORT_293=31, mask_SORT_295=63, mask_SORT_297=127, mask_SORT_299=255, mask_SORT_301=511, mask_SORT_303=1023, mask_SORT_305=2047, mask_SORT_37=4294967295, mask_SORT_41=7, mask_SORT_6=1, msb_SORT_1=2048, msb_SORT_11=8, msb_SORT_289=2, msb_SORT_293=16, msb_SORT_295=32, msb_SORT_297=64, msb_SORT_299=128, msb_SORT_301=256, msb_SORT_303=512, msb_SORT_305=1024, msb_SORT_37=2147483648, msb_SORT_41=4, msb_SORT_6=1, state_125=0, state_17=0, state_19=0, state_23=0, state_25=0, state_29=0, state_31=0, state_43=0, state_59=0, var_108=8, var_112=10, var_116=13, var_127=4, var_129=12, var_132=14, var_138=6, var_16=0, var_165=0, var_209=1, var_21=0, var_211=5, var_229=4095, var_33_arg_0=0, var_33_arg_0 ? var_33_arg_1 : var_33_arg_2=0, var_33_arg_1=0, var_33_arg_2=0, var_34=3, var_34_arg_0=0, var_34_arg_1=6, var_34_arg_2=3, var_39=0, var_42=0, var_45=6, var_47=7, var_53=1, var_569=1, var_57=2, var_577=0, var_62=9, var_70=15, var_75=1, var_77=3, var_80=5, var_83=7, var_86=11] [L163] SORT_1 var_33 = var_33_arg_0 ? var_33_arg_1 : var_33_arg_2; [L164] SORT_6 var_35_arg_0 = var_21; [L165] SORT_1 var_35_arg_1 = var_34; [L166] SORT_1 var_35_arg_2 = var_33; VAL [init_126_arg_1=0, init_18_arg_1=0, init_20_arg_1=0, init_24_arg_1=0, init_26_arg_1=0, init_30_arg_1=0, init_32_arg_1=0, init_44_arg_1=0, init_60_arg_1=0, input_10=3, input_12=0, input_13=7, input_14=9, input_15=5, input_2=1, input_216=4, input_219=2, input_3=10, input_4=3, input_5=6, input_7=11, input_8=8, input_9=0, mask_SORT_1=4095, mask_SORT_11=15, mask_SORT_289=3, mask_SORT_293=31, mask_SORT_295=63, mask_SORT_297=127, mask_SORT_299=255, mask_SORT_301=511, mask_SORT_303=1023, mask_SORT_305=2047, mask_SORT_37=4294967295, mask_SORT_41=7, mask_SORT_6=1, msb_SORT_1=2048, msb_SORT_11=8, msb_SORT_289=2, msb_SORT_293=16, msb_SORT_295=32, msb_SORT_297=64, msb_SORT_299=128, msb_SORT_301=256, msb_SORT_303=512, msb_SORT_305=1024, msb_SORT_37=2147483648, msb_SORT_41=4, msb_SORT_6=1, state_125=0, state_17=0, state_19=0, state_23=0, state_25=0, state_29=0, state_31=0, state_43=0, state_59=0, var_108=8, var_112=10, var_116=13, var_127=4, var_129=12, var_132=14, var_138=6, var_16=0, var_165=0, var_209=1, var_21=0, var_211=5, var_229=4095, var_33=0, var_33_arg_0=0, var_33_arg_1=0, var_33_arg_2=0, var_34=3, var_34_arg_0=0, var_34_arg_1=6, var_34_arg_2=3, var_35_arg_0=0, var_35_arg_1=3, var_35_arg_2=0, var_39=0, var_42=0, var_45=6, var_47=7, var_53=1, var_569=1, var_57=2, var_577=0, var_62=9, var_70=15, var_75=1, var_77=3, var_80=5, var_83=7, var_86=11] [L167] EXPR var_35_arg_0 ? var_35_arg_1 : var_35_arg_2 VAL [init_126_arg_1=0, init_18_arg_1=0, init_20_arg_1=0, init_24_arg_1=0, init_26_arg_1=0, init_30_arg_1=0, init_32_arg_1=0, init_44_arg_1=0, init_60_arg_1=0, input_10=3, input_12=0, input_13=7, input_14=9, input_15=5, input_2=1, input_216=4, input_219=2, input_3=10, input_4=3, input_5=6, input_7=11, input_8=8, input_9=0, mask_SORT_1=4095, mask_SORT_11=15, mask_SORT_289=3, mask_SORT_293=31, mask_SORT_295=63, mask_SORT_297=127, mask_SORT_299=255, mask_SORT_301=511, mask_SORT_303=1023, mask_SORT_305=2047, mask_SORT_37=4294967295, mask_SORT_41=7, mask_SORT_6=1, msb_SORT_1=2048, msb_SORT_11=8, msb_SORT_289=2, msb_SORT_293=16, msb_SORT_295=32, msb_SORT_297=64, msb_SORT_299=128, msb_SORT_301=256, msb_SORT_303=512, msb_SORT_305=1024, msb_SORT_37=2147483648, msb_SORT_41=4, msb_SORT_6=1, state_125=0, state_17=0, state_19=0, state_23=0, state_25=0, state_29=0, state_31=0, state_43=0, state_59=0, var_108=8, var_112=10, var_116=13, var_127=4, var_129=12, var_132=14, var_138=6, var_16=0, var_165=0, var_209=1, var_21=0, var_211=5, var_229=4095, var_33=0, var_33_arg_0=0, var_33_arg_1=0, var_33_arg_2=0, var_34=3, var_34_arg_0=0, var_34_arg_1=6, var_34_arg_2=3, var_35_arg_0=0, var_35_arg_0 ? var_35_arg_1 : var_35_arg_2=0, var_35_arg_1=3, var_35_arg_2=0, var_39=0, var_42=0, var_45=6, var_47=7, var_53=1, var_569=1, var_57=2, var_577=0, var_62=9, var_70=15, var_75=1, var_77=3, var_80=5, var_83=7, var_86=11] [L167] SORT_1 var_35 = var_35_arg_0 ? var_35_arg_1 : var_35_arg_2; [L168] SORT_6 var_27_arg_0 = var_21; [L169] SORT_1 var_27_arg_1 = state_25; [L170] SORT_1 var_27_arg_2 = state_23; VAL [init_126_arg_1=0, init_18_arg_1=0, init_20_arg_1=0, init_24_arg_1=0, init_26_arg_1=0, init_30_arg_1=0, init_32_arg_1=0, init_44_arg_1=0, init_60_arg_1=0, input_10=3, input_12=0, input_13=7, input_14=9, input_15=5, input_2=1, input_216=4, input_219=2, input_3=10, input_4=3, input_5=6, input_7=11, input_8=8, input_9=0, mask_SORT_1=4095, mask_SORT_11=15, mask_SORT_289=3, mask_SORT_293=31, mask_SORT_295=63, mask_SORT_297=127, mask_SORT_299=255, mask_SORT_301=511, mask_SORT_303=1023, mask_SORT_305=2047, mask_SORT_37=4294967295, mask_SORT_41=7, mask_SORT_6=1, msb_SORT_1=2048, msb_SORT_11=8, msb_SORT_289=2, msb_SORT_293=16, msb_SORT_295=32, msb_SORT_297=64, msb_SORT_299=128, msb_SORT_301=256, msb_SORT_303=512, msb_SORT_305=1024, msb_SORT_37=2147483648, msb_SORT_41=4, msb_SORT_6=1, state_125=0, state_17=0, state_19=0, state_23=0, state_25=0, state_29=0, state_31=0, state_43=0, state_59=0, var_108=8, var_112=10, var_116=13, var_127=4, var_129=12, var_132=14, var_138=6, var_16=0, var_165=0, var_209=1, var_21=0, var_211=5, var_229=4095, var_27_arg_0=0, var_27_arg_1=0, var_27_arg_2=0, var_33=0, var_33_arg_0=0, var_33_arg_1=0, var_33_arg_2=0, var_34=3, var_34_arg_0=0, var_34_arg_1=6, var_34_arg_2=3, var_35=0, var_35_arg_0=0, var_35_arg_1=3, var_35_arg_2=0, var_39=0, var_42=0, var_45=6, var_47=7, var_53=1, var_569=1, var_57=2, var_577=0, var_62=9, var_70=15, var_75=1, var_77=3, var_80=5, var_83=7, var_86=11] [L171] EXPR var_27_arg_0 ? var_27_arg_1 : var_27_arg_2 VAL [init_126_arg_1=0, init_18_arg_1=0, init_20_arg_1=0, init_24_arg_1=0, init_26_arg_1=0, init_30_arg_1=0, init_32_arg_1=0, init_44_arg_1=0, init_60_arg_1=0, input_10=3, input_12=0, input_13=7, input_14=9, input_15=5, input_2=1, input_216=4, input_219=2, input_3=10, input_4=3, input_5=6, input_7=11, input_8=8, input_9=0, mask_SORT_1=4095, mask_SORT_11=15, mask_SORT_289=3, mask_SORT_293=31, mask_SORT_295=63, mask_SORT_297=127, mask_SORT_299=255, mask_SORT_301=511, mask_SORT_303=1023, mask_SORT_305=2047, mask_SORT_37=4294967295, mask_SORT_41=7, mask_SORT_6=1, msb_SORT_1=2048, msb_SORT_11=8, msb_SORT_289=2, msb_SORT_293=16, msb_SORT_295=32, msb_SORT_297=64, msb_SORT_299=128, msb_SORT_301=256, msb_SORT_303=512, msb_SORT_305=1024, msb_SORT_37=2147483648, msb_SORT_41=4, msb_SORT_6=1, state_125=0, state_17=0, state_19=0, state_23=0, state_25=0, state_29=0, state_31=0, state_43=0, state_59=0, var_108=8, var_112=10, var_116=13, var_127=4, var_129=12, var_132=14, var_138=6, var_16=0, var_165=0, var_209=1, var_21=0, var_211=5, var_229=4095, var_27_arg_0=0, var_27_arg_0 ? var_27_arg_1 : var_27_arg_2=0, var_27_arg_1=0, var_27_arg_2=0, var_33=0, var_33_arg_0=0, var_33_arg_1=0, var_33_arg_2=0, var_34=3, var_34_arg_0=0, var_34_arg_1=6, var_34_arg_2=3, var_35=0, var_35_arg_0=0, var_35_arg_1=3, var_35_arg_2=0, var_39=0, var_42=0, var_45=6, var_47=7, var_53=1, var_569=1, var_57=2, var_577=0, var_62=9, var_70=15, var_75=1, var_77=3, var_80=5, var_83=7, var_86=11] [L171] SORT_1 var_27 = var_27_arg_0 ? var_27_arg_1 : var_27_arg_2; [L172] SORT_6 var_22_arg_0 = var_21; [L173] SORT_1 var_22_arg_1 = state_19; [L174] SORT_1 var_22_arg_2 = state_17; VAL [init_126_arg_1=0, init_18_arg_1=0, init_20_arg_1=0, init_24_arg_1=0, init_26_arg_1=0, init_30_arg_1=0, init_32_arg_1=0, init_44_arg_1=0, init_60_arg_1=0, input_10=3, input_12=0, input_13=7, input_14=9, input_15=5, input_2=1, input_216=4, input_219=2, input_3=10, input_4=3, input_5=6, input_7=11, input_8=8, input_9=0, mask_SORT_1=4095, mask_SORT_11=15, mask_SORT_289=3, mask_SORT_293=31, mask_SORT_295=63, mask_SORT_297=127, mask_SORT_299=255, mask_SORT_301=511, mask_SORT_303=1023, mask_SORT_305=2047, mask_SORT_37=4294967295, mask_SORT_41=7, mask_SORT_6=1, msb_SORT_1=2048, msb_SORT_11=8, msb_SORT_289=2, msb_SORT_293=16, msb_SORT_295=32, msb_SORT_297=64, msb_SORT_299=128, msb_SORT_301=256, msb_SORT_303=512, msb_SORT_305=1024, msb_SORT_37=2147483648, msb_SORT_41=4, msb_SORT_6=1, state_125=0, state_17=0, state_19=0, state_23=0, state_25=0, state_29=0, state_31=0, state_43=0, state_59=0, var_108=8, var_112=10, var_116=13, var_127=4, var_129=12, var_132=14, var_138=6, var_16=0, var_165=0, var_209=1, var_21=0, var_211=5, var_229=4095, var_22_arg_0=0, var_22_arg_1=0, var_22_arg_2=0, var_27=0, var_27_arg_0=0, var_27_arg_1=0, var_27_arg_2=0, var_33=0, var_33_arg_0=0, var_33_arg_1=0, var_33_arg_2=0, var_34=3, var_34_arg_0=0, var_34_arg_1=6, var_34_arg_2=3, var_35=0, var_35_arg_0=0, var_35_arg_1=3, var_35_arg_2=0, var_39=0, var_42=0, var_45=6, var_47=7, var_53=1, var_569=1, var_57=2, var_577=0, var_62=9, var_70=15, var_75=1, var_77=3, var_80=5, var_83=7, var_86=11] [L175] EXPR var_22_arg_0 ? var_22_arg_1 : var_22_arg_2 VAL [init_126_arg_1=0, init_18_arg_1=0, init_20_arg_1=0, init_24_arg_1=0, init_26_arg_1=0, init_30_arg_1=0, init_32_arg_1=0, init_44_arg_1=0, init_60_arg_1=0, input_10=3, input_12=0, input_13=7, input_14=9, input_15=5, input_2=1, input_216=4, input_219=2, input_3=10, input_4=3, input_5=6, input_7=11, input_8=8, input_9=0, mask_SORT_1=4095, mask_SORT_11=15, mask_SORT_289=3, mask_SORT_293=31, mask_SORT_295=63, mask_SORT_297=127, mask_SORT_299=255, mask_SORT_301=511, mask_SORT_303=1023, mask_SORT_305=2047, mask_SORT_37=4294967295, mask_SORT_41=7, mask_SORT_6=1, msb_SORT_1=2048, msb_SORT_11=8, msb_SORT_289=2, msb_SORT_293=16, msb_SORT_295=32, msb_SORT_297=64, msb_SORT_299=128, msb_SORT_301=256, msb_SORT_303=512, msb_SORT_305=1024, msb_SORT_37=2147483648, msb_SORT_41=4, msb_SORT_6=1, state_125=0, state_17=0, state_19=0, state_23=0, state_25=0, state_29=0, state_31=0, state_43=0, state_59=0, var_108=8, var_112=10, var_116=13, var_127=4, var_129=12, var_132=14, var_138=6, var_16=0, var_165=0, var_209=1, var_21=0, var_211=5, var_229=4095, var_22_arg_0=0, var_22_arg_0 ? var_22_arg_1 : var_22_arg_2=0, var_22_arg_1=0, var_22_arg_2=0, var_27=0, var_27_arg_0=0, var_27_arg_1=0, var_27_arg_2=0, var_33=0, var_33_arg_0=0, var_33_arg_1=0, var_33_arg_2=0, var_34=3, var_34_arg_0=0, var_34_arg_1=6, var_34_arg_2=3, var_35=0, var_35_arg_0=0, var_35_arg_1=3, var_35_arg_2=0, var_39=0, var_42=0, var_45=6, var_47=7, var_53=1, var_569=1, var_57=2, var_577=0, var_62=9, var_70=15, var_75=1, var_77=3, var_80=5, var_83=7, var_86=11] [L175] SORT_1 var_22 = var_22_arg_0 ? var_22_arg_1 : var_22_arg_2; [L176] SORT_6 var_28_arg_0 = var_21; [L177] SORT_1 var_28_arg_1 = var_27; [L178] SORT_1 var_28_arg_2 = var_22; VAL [init_126_arg_1=0, init_18_arg_1=0, init_20_arg_1=0, init_24_arg_1=0, init_26_arg_1=0, init_30_arg_1=0, init_32_arg_1=0, init_44_arg_1=0, init_60_arg_1=0, input_10=3, input_12=0, input_13=7, input_14=9, input_15=5, input_2=1, input_216=4, input_219=2, input_3=10, input_4=3, input_5=6, input_7=11, input_8=8, input_9=0, mask_SORT_1=4095, mask_SORT_11=15, mask_SORT_289=3, mask_SORT_293=31, mask_SORT_295=63, mask_SORT_297=127, mask_SORT_299=255, mask_SORT_301=511, mask_SORT_303=1023, mask_SORT_305=2047, mask_SORT_37=4294967295, mask_SORT_41=7, mask_SORT_6=1, msb_SORT_1=2048, msb_SORT_11=8, msb_SORT_289=2, msb_SORT_293=16, msb_SORT_295=32, msb_SORT_297=64, msb_SORT_299=128, msb_SORT_301=256, msb_SORT_303=512, msb_SORT_305=1024, msb_SORT_37=2147483648, msb_SORT_41=4, msb_SORT_6=1, state_125=0, state_17=0, state_19=0, state_23=0, state_25=0, state_29=0, state_31=0, state_43=0, state_59=0, var_108=8, var_112=10, var_116=13, var_127=4, var_129=12, var_132=14, var_138=6, var_16=0, var_165=0, var_209=1, var_21=0, var_211=5, var_22=0, var_229=4095, var_22_arg_0=0, var_22_arg_1=0, var_22_arg_2=0, var_27=0, var_27_arg_0=0, var_27_arg_1=0, var_27_arg_2=0, var_28_arg_0=0, var_28_arg_1=0, var_28_arg_2=0, var_33=0, var_33_arg_0=0, var_33_arg_1=0, var_33_arg_2=0, var_34=3, var_34_arg_0=0, var_34_arg_1=6, var_34_arg_2=3, var_35=0, var_35_arg_0=0, var_35_arg_1=3, var_35_arg_2=0, var_39=0, var_42=0, var_45=6, var_47=7, var_53=1, var_569=1, var_57=2, var_577=0, var_62=9, var_70=15, var_75=1, var_77=3, var_80=5, var_83=7, var_86=11] [L179] EXPR var_28_arg_0 ? var_28_arg_1 : var_28_arg_2 VAL [init_126_arg_1=0, init_18_arg_1=0, init_20_arg_1=0, init_24_arg_1=0, init_26_arg_1=0, init_30_arg_1=0, init_32_arg_1=0, init_44_arg_1=0, init_60_arg_1=0, input_10=3, input_12=0, input_13=7, input_14=9, input_15=5, input_2=1, input_216=4, input_219=2, input_3=10, input_4=3, input_5=6, input_7=11, input_8=8, input_9=0, mask_SORT_1=4095, mask_SORT_11=15, mask_SORT_289=3, mask_SORT_293=31, mask_SORT_295=63, mask_SORT_297=127, mask_SORT_299=255, mask_SORT_301=511, mask_SORT_303=1023, mask_SORT_305=2047, mask_SORT_37=4294967295, mask_SORT_41=7, mask_SORT_6=1, msb_SORT_1=2048, msb_SORT_11=8, msb_SORT_289=2, msb_SORT_293=16, msb_SORT_295=32, msb_SORT_297=64, msb_SORT_299=128, msb_SORT_301=256, msb_SORT_303=512, msb_SORT_305=1024, msb_SORT_37=2147483648, msb_SORT_41=4, msb_SORT_6=1, state_125=0, state_17=0, state_19=0, state_23=0, state_25=0, state_29=0, state_31=0, state_43=0, state_59=0, var_108=8, var_112=10, var_116=13, var_127=4, var_129=12, var_132=14, var_138=6, var_16=0, var_165=0, var_209=1, var_21=0, var_211=5, var_22=0, var_229=4095, var_22_arg_0=0, var_22_arg_1=0, var_22_arg_2=0, var_27=0, var_27_arg_0=0, var_27_arg_1=0, var_27_arg_2=0, var_28_arg_0=0, var_28_arg_0 ? var_28_arg_1 : var_28_arg_2=0, var_28_arg_1=0, var_28_arg_2=0, var_33=0, var_33_arg_0=0, var_33_arg_1=0, var_33_arg_2=0, var_34=3, var_34_arg_0=0, var_34_arg_1=6, var_34_arg_2=3, var_35=0, var_35_arg_0=0, var_35_arg_1=3, var_35_arg_2=0, var_39=0, var_42=0, var_45=6, var_47=7, var_53=1, var_569=1, var_57=2, var_577=0, var_62=9, var_70=15, var_75=1, var_77=3, var_80=5, var_83=7, var_86=11] [L179] SORT_1 var_28 = var_28_arg_0 ? var_28_arg_1 : var_28_arg_2; [L180] SORT_6 var_36_arg_0 = var_21; [L181] SORT_1 var_36_arg_1 = var_35; [L182] SORT_1 var_36_arg_2 = var_28; VAL [init_126_arg_1=0, init_18_arg_1=0, init_20_arg_1=0, init_24_arg_1=0, init_26_arg_1=0, init_30_arg_1=0, init_32_arg_1=0, init_44_arg_1=0, init_60_arg_1=0, input_10=3, input_12=0, input_13=7, input_14=9, input_15=5, input_2=1, input_216=4, input_219=2, input_3=10, input_4=3, input_5=6, input_7=11, input_8=8, input_9=0, mask_SORT_1=4095, mask_SORT_11=15, mask_SORT_289=3, mask_SORT_293=31, mask_SORT_295=63, mask_SORT_297=127, mask_SORT_299=255, mask_SORT_301=511, mask_SORT_303=1023, mask_SORT_305=2047, mask_SORT_37=4294967295, mask_SORT_41=7, mask_SORT_6=1, msb_SORT_1=2048, msb_SORT_11=8, msb_SORT_289=2, msb_SORT_293=16, msb_SORT_295=32, msb_SORT_297=64, msb_SORT_299=128, msb_SORT_301=256, msb_SORT_303=512, msb_SORT_305=1024, msb_SORT_37=2147483648, msb_SORT_41=4, msb_SORT_6=1, state_125=0, state_17=0, state_19=0, state_23=0, state_25=0, state_29=0, state_31=0, state_43=0, state_59=0, var_108=8, var_112=10, var_116=13, var_127=4, var_129=12, var_132=14, var_138=6, var_16=0, var_165=0, var_209=1, var_21=0, var_211=5, var_22=0, var_229=4095, var_22_arg_0=0, var_22_arg_1=0, var_22_arg_2=0, var_27=0, var_27_arg_0=0, var_27_arg_1=0, var_27_arg_2=0, var_28=0, var_28_arg_0=0, var_28_arg_1=0, var_28_arg_2=0, var_33=0, var_33_arg_0=0, var_33_arg_1=0, var_33_arg_2=0, var_34=3, var_34_arg_0=0, var_34_arg_1=6, var_34_arg_2=3, var_35=0, var_35_arg_0=0, var_35_arg_1=3, var_35_arg_2=0, var_36_arg_0=0, var_36_arg_1=0, var_36_arg_2=0, var_39=0, var_42=0, var_45=6, var_47=7, var_53=1, var_569=1, var_57=2, var_577=0, var_62=9, var_70=15, var_75=1, var_77=3, var_80=5, var_83=7, var_86=11] [L183] EXPR var_36_arg_0 ? var_36_arg_1 : var_36_arg_2 VAL [init_126_arg_1=0, init_18_arg_1=0, init_20_arg_1=0, init_24_arg_1=0, init_26_arg_1=0, init_30_arg_1=0, init_32_arg_1=0, init_44_arg_1=0, init_60_arg_1=0, input_10=3, input_12=0, input_13=7, input_14=9, input_15=5, input_2=1, input_216=4, input_219=2, input_3=10, input_4=3, input_5=6, input_7=11, input_8=8, input_9=0, mask_SORT_1=4095, mask_SORT_11=15, mask_SORT_289=3, mask_SORT_293=31, mask_SORT_295=63, mask_SORT_297=127, mask_SORT_299=255, mask_SORT_301=511, mask_SORT_303=1023, mask_SORT_305=2047, mask_SORT_37=4294967295, mask_SORT_41=7, mask_SORT_6=1, msb_SORT_1=2048, msb_SORT_11=8, msb_SORT_289=2, msb_SORT_293=16, msb_SORT_295=32, msb_SORT_297=64, msb_SORT_299=128, msb_SORT_301=256, msb_SORT_303=512, msb_SORT_305=1024, msb_SORT_37=2147483648, msb_SORT_41=4, msb_SORT_6=1, state_125=0, state_17=0, state_19=0, state_23=0, state_25=0, state_29=0, state_31=0, state_43=0, state_59=0, var_108=8, var_112=10, var_116=13, var_127=4, var_129=12, var_132=14, var_138=6, var_16=0, var_165=0, var_209=1, var_21=0, var_211=5, var_22=0, var_229=4095, var_22_arg_0=0, var_22_arg_1=0, var_22_arg_2=0, var_27=0, var_27_arg_0=0, var_27_arg_1=0, var_27_arg_2=0, var_28=0, var_28_arg_0=0, var_28_arg_1=0, var_28_arg_2=0, var_33=0, var_33_arg_0=0, var_33_arg_1=0, var_33_arg_2=0, var_34=3, var_34_arg_0=0, var_34_arg_1=6, var_34_arg_2=3, var_35=0, var_35_arg_0=0, var_35_arg_1=3, var_35_arg_2=0, var_36_arg_0=0, var_36_arg_0 ? var_36_arg_1 : var_36_arg_2=0, var_36_arg_1=0, var_36_arg_2=0, var_39=0, var_42=0, var_45=6, var_47=7, var_53=1, var_569=1, var_57=2, var_577=0, var_62=9, var_70=15, var_75=1, var_77=3, var_80=5, var_83=7, var_86=11] [L183] SORT_1 var_36 = var_36_arg_0 ? var_36_arg_1 : var_36_arg_2; [L184] SORT_1 var_38_arg_0 = var_36; [L185] var_38_arg_0 = var_38_arg_0 & mask_SORT_1 [L186] SORT_37 var_38 = var_38_arg_0; [L187] SORT_37 var_40_arg_0 = var_38; [L188] SORT_37 var_40_arg_1 = var_39; [L189] SORT_6 var_40 = var_40_arg_0 == var_40_arg_1; [L190] SORT_41 var_46_arg_0 = state_43; [L191] SORT_41 var_46_arg_1 = var_45; [L192] SORT_6 var_46 = var_46_arg_0 != var_46_arg_1; [L193] SORT_41 var_48_arg_0 = state_43; [L194] SORT_41 var_48_arg_1 = var_47; [L195] SORT_6 var_48 = var_48_arg_0 != var_48_arg_1; [L196] SORT_6 var_49_arg_0 = var_46; [L197] SORT_6 var_49_arg_1 = var_48; [L198] SORT_6 var_49 = var_49_arg_0 | var_49_arg_1; [L199] SORT_6 var_50_arg_0 = var_40; [L200] SORT_6 var_50_arg_1 = var_49; [L201] SORT_6 var_50 = var_50_arg_0 & var_50_arg_1; [L202] SORT_6 var_54_arg_0 = var_50; [L203] SORT_6 var_54 = ~var_54_arg_0; [L204] SORT_6 var_55_arg_0 = var_53; [L205] SORT_6 var_55_arg_1 = var_54; [L206] SORT_6 var_55 = var_55_arg_0 & var_55_arg_1; [L207] var_55 = var_55 & mask_SORT_6 [L208] SORT_6 bad_56_arg_0 = var_55; [L209] CALL __VERIFIER_assert(!(bad_56_arg_0)) [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 211 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.7s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4165 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4165 mSDsluCounter, 2114 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 35 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 119 IncrementalHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 2079 mSDtfsCounter, 119 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=211occurred in iteration=0, InterpolantAutomatonStates: 28, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 49 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 152 NumberOfCodeBlocks, 152 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 126 ConstructedInterpolants, 0 QuantifiedInterpolants, 501 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-02 19:56:13,158 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/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_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_am2910_p1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 958b2cff64b8fceb0cc12cf5dd7a9dde08c134b5c0d92789485d456e6d4fd48a --- 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 19:56:16,075 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 19:56:16,079 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 19:56:16,134 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 19:56:16,135 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 19:56:16,140 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 19:56:16,143 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 19:56:16,151 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 19:56:16,158 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 19:56:16,161 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 19:56:16,163 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 19:56:16,166 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 19:56:16,166 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 19:56:16,173 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 19:56:16,174 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 19:56:16,176 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 19:56:16,179 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 19:56:16,180 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 19:56:16,182 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 19:56:16,191 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 19:56:16,194 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 19:56:16,196 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 19:56:16,199 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 19:56:16,202 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 19:56:16,209 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 19:56:16,214 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 19:56:16,214 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 19:56:16,215 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 19:56:16,217 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 19:56:16,218 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 19:56:16,219 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 19:56:16,220 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 19:56:16,222 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 19:56:16,224 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 19:56:16,225 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 19:56:16,225 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 19:56:16,226 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 19:56:16,227 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 19:56:16,227 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 19:56:16,230 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 19:56:16,231 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 19:56:16,232 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-02 19:56:16,279 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 19:56:16,279 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 19:56:16,281 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 19:56:16,281 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 19:56:16,282 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 19:56:16,283 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 19:56:16,284 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 19:56:16,285 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 19:56:16,285 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 19:56:16,286 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 19:56:16,287 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 19:56:16,288 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 19:56:16,288 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 19:56:16,289 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 19:56:16,289 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 19:56:16,290 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-02 19:56:16,290 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-02 19:56:16,290 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 19:56:16,291 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 19:56:16,291 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 19:56:16,292 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 19:56:16,292 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 19:56:16,292 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 19:56:16,293 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 19:56:16,293 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 19:56:16,294 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 19:56:16,294 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 19:56:16,295 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-02 19:56:16,295 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-02 19:56:16,295 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 19:56:16,296 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 19:56:16,296 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 19:56:16,297 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-02 19:56:16,297 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_78d520ec-9ba0-40f1-8719-ce803926f204/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 958b2cff64b8fceb0cc12cf5dd7a9dde08c134b5c0d92789485d456e6d4fd48a [2022-11-02 19:56:16,800 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 19:56:16,825 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 19:56:16,828 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 19:56:16,830 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 19:56:16,831 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 19:56:16,833 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_am2910_p1.c [2022-11-02 19:56:16,925 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/data/ae6561b7f/38773dab663944b58ba463417bb9f381/FLAGb31754af7 [2022-11-02 19:56:17,762 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 19:56:17,763 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_am2910_p1.c [2022-11-02 19:56:17,794 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/data/ae6561b7f/38773dab663944b58ba463417bb9f381/FLAGb31754af7 [2022-11-02 19:56:17,872 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/data/ae6561b7f/38773dab663944b58ba463417bb9f381 [2022-11-02 19:56:17,876 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 19:56:17,879 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 19:56:17,883 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 19:56:17,883 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 19:56:17,888 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 19:56:17,889 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 07:56:17" (1/1) ... [2022-11-02 19:56:17,891 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30109b31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:17, skipping insertion in model container [2022-11-02 19:56:17,891 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 07:56:17" (1/1) ... [2022-11-02 19:56:17,901 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 19:56:18,000 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 19:56:18,283 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_78d520ec-9ba0-40f1-8719-ce803926f204/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_am2910_p1.c[1107,1120] [2022-11-02 19:56:18,827 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 19:56:18,840 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 19:56:18,855 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_78d520ec-9ba0-40f1-8719-ce803926f204/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_am2910_p1.c[1107,1120] [2022-11-02 19:56:19,102 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 19:56:19,119 INFO L208 MainTranslator]: Completed translation [2022-11-02 19:56:19,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:19 WrapperNode [2022-11-02 19:56:19,120 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 19:56:19,122 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 19:56:19,122 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 19:56:19,123 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 19:56:19,131 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:19" (1/1) ... [2022-11-02 19:56:19,193 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:19" (1/1) ... [2022-11-02 19:56:19,351 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2154 [2022-11-02 19:56:19,352 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 19:56:19,352 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 19:56:19,353 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 19:56:19,353 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 19:56:19,375 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:19" (1/1) ... [2022-11-02 19:56:19,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:19" (1/1) ... [2022-11-02 19:56:19,394 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:19" (1/1) ... [2022-11-02 19:56:19,395 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:19" (1/1) ... [2022-11-02 19:56:19,469 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:19" (1/1) ... [2022-11-02 19:56:19,485 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:19" (1/1) ... [2022-11-02 19:56:19,508 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:19" (1/1) ... [2022-11-02 19:56:19,521 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:19" (1/1) ... [2022-11-02 19:56:19,551 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 19:56:19,552 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 19:56:19,552 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 19:56:19,553 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 19:56:19,554 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:19" (1/1) ... [2022-11-02 19:56:19,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 19:56:19,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:56:19,611 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 19:56:19,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 19:56:19,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 19:56:19,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 19:56:20,280 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 19:56:20,282 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 19:56:22,038 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 19:56:22,049 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 19:56:22,050 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 19:56:22,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 07:56:22 BoogieIcfgContainer [2022-11-02 19:56:22,053 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 19:56:22,055 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 19:56:22,055 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 19:56:22,059 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 19:56:22,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 07:56:17" (1/3) ... [2022-11-02 19:56:22,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cc2ca70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 07:56:22, skipping insertion in model container [2022-11-02 19:56:22,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:56:19" (2/3) ... [2022-11-02 19:56:22,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cc2ca70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 07:56:22, skipping insertion in model container [2022-11-02 19:56:22,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 07:56:22" (3/3) ... [2022-11-02 19:56:22,063 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_arrays_am2910_p1.c [2022-11-02 19:56:22,086 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 19:56:22,086 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 19:56:22,184 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 19:56:22,194 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;@2609d2b8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 19:56:22,195 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 19:56:22,202 INFO L276 IsEmpty]: Start isEmpty. Operand has 211 states, 209 states have (on average 1.4976076555023923) internal successors, (313), 210 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:22,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-02 19:56:22,211 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:56:22,212 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:56:22,213 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:56:22,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:56:22,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1799458747, now seen corresponding path program 1 times [2022-11-02 19:56:22,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:56:22,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1918939289] [2022-11-02 19:56:22,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:56:22,242 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:56:22,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:56:22,249 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:56:22,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-02 19:56:22,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:22,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 19:56:22,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:56:22,903 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 19:56:22,904 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:56:22,905 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:56:22,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1918939289] [2022-11-02 19:56:22,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1918939289] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:56:22,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:56:22,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 19:56:22,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118378535] [2022-11-02 19:56:22,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:56:22,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 19:56:22,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:56:22,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 19:56:22,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 19:56:22,955 INFO L87 Difference]: Start difference. First operand has 211 states, 209 states have (on average 1.4976076555023923) internal successors, (313), 210 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:23,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:56:23,072 INFO L93 Difference]: Finished difference Result 417 states and 624 transitions. [2022-11-02 19:56:23,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 19:56:23,076 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2022-11-02 19:56:23,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:56:23,087 INFO L225 Difference]: With dead ends: 417 [2022-11-02 19:56:23,088 INFO L226 Difference]: Without dead ends: 208 [2022-11-02 19:56:23,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 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 19:56:23,096 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 607 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 607 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:56:23,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [607 Valid, 299 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 19:56:23,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-11-02 19:56:23,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 207. [2022-11-02 19:56:23,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.4854368932038835) internal successors, (306), 206 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:23,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 306 transitions. [2022-11-02 19:56:23,172 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 306 transitions. Word has length 19 [2022-11-02 19:56:23,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:56:23,173 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 306 transitions. [2022-11-02 19:56:23,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:23,174 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 306 transitions. [2022-11-02 19:56:23,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-02 19:56:23,175 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:56:23,175 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:56:23,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-02 19:56:23,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:56:23,389 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:56:23,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:56:23,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1474440195, now seen corresponding path program 1 times [2022-11-02 19:56:23,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:56:23,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [482653313] [2022-11-02 19:56:23,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:56:23,391 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:56:23,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:56:23,397 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:56:23,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-02 19:56:23,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:23,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 19:56:23,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:56:23,972 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 19:56:23,973 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:56:23,974 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:56:23,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [482653313] [2022-11-02 19:56:23,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [482653313] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:56:23,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:56:23,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 19:56:23,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795017906] [2022-11-02 19:56:23,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:56:23,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 19:56:23,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:56:23,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 19:56:23,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 19:56:23,989 INFO L87 Difference]: Start difference. First operand 207 states and 306 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:24,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:56:24,093 INFO L93 Difference]: Finished difference Result 415 states and 613 transitions. [2022-11-02 19:56:24,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 19:56:24,096 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2022-11-02 19:56:24,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:56:24,097 INFO L225 Difference]: With dead ends: 415 [2022-11-02 19:56:24,101 INFO L226 Difference]: Without dead ends: 210 [2022-11-02 19:56:24,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 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 19:56:24,104 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 603 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 603 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:56:24,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [603 Valid, 300 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 19:56:24,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2022-11-02 19:56:24,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 207. [2022-11-02 19:56:24,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.4805825242718447) internal successors, (305), 206 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:24,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 305 transitions. [2022-11-02 19:56:24,124 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 305 transitions. Word has length 19 [2022-11-02 19:56:24,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:56:24,125 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 305 transitions. [2022-11-02 19:56:24,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:24,125 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 305 transitions. [2022-11-02 19:56:24,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-02 19:56:24,126 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:56:24,127 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:56:24,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-02 19:56:24,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:56:24,342 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:56:24,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:56:24,343 INFO L85 PathProgramCache]: Analyzing trace with hash 463322945, now seen corresponding path program 1 times [2022-11-02 19:56:24,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:56:24,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [372755723] [2022-11-02 19:56:24,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:56:24,344 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:56:24,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:56:24,346 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:56:24,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-02 19:56:24,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:24,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 19:56:24,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:56:24,852 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 19:56:24,853 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:56:24,853 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:56:24,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [372755723] [2022-11-02 19:56:24,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [372755723] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:56:24,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:56:24,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 19:56:24,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655649508] [2022-11-02 19:56:24,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:56:24,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 19:56:24,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:56:24,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 19:56:24,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 19:56:24,866 INFO L87 Difference]: Start difference. First operand 207 states and 305 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:24,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:56:24,939 INFO L93 Difference]: Finished difference Result 417 states and 613 transitions. [2022-11-02 19:56:24,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 19:56:24,940 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2022-11-02 19:56:24,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:56:24,943 INFO L225 Difference]: With dead ends: 417 [2022-11-02 19:56:24,944 INFO L226 Difference]: Without dead ends: 212 [2022-11-02 19:56:24,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 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 19:56:24,949 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 599 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 599 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:56:24,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [599 Valid, 301 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 19:56:24,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-11-02 19:56:24,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 207. [2022-11-02 19:56:24,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.4757281553398058) internal successors, (304), 206 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:24,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 304 transitions. [2022-11-02 19:56:24,978 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 304 transitions. Word has length 19 [2022-11-02 19:56:24,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:56:24,979 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 304 transitions. [2022-11-02 19:56:24,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:24,979 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 304 transitions. [2022-11-02 19:56:24,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-02 19:56:24,980 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:56:24,980 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:56:25,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-02 19:56:25,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:56:25,196 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:56:25,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:56:25,197 INFO L85 PathProgramCache]: Analyzing trace with hash 721488383, now seen corresponding path program 1 times [2022-11-02 19:56:25,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:56:25,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2125701280] [2022-11-02 19:56:25,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:56:25,198 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:56:25,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:56:25,200 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:56:25,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-02 19:56:25,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:25,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 19:56:25,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:56:25,721 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 19:56:25,722 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:56:25,722 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:56:25,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2125701280] [2022-11-02 19:56:25,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2125701280] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:56:25,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:56:25,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 19:56:25,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027112853] [2022-11-02 19:56:25,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:56:25,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 19:56:25,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:56:25,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 19:56:25,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 19:56:25,726 INFO L87 Difference]: Start difference. First operand 207 states and 304 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:25,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:56:25,789 INFO L93 Difference]: Finished difference Result 419 states and 613 transitions. [2022-11-02 19:56:25,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 19:56:25,790 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2022-11-02 19:56:25,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:56:25,792 INFO L225 Difference]: With dead ends: 419 [2022-11-02 19:56:25,792 INFO L226 Difference]: Without dead ends: 214 [2022-11-02 19:56:25,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 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 19:56:25,794 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 595 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 595 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:56:25,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [595 Valid, 302 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 19:56:25,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2022-11-02 19:56:25,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 207. [2022-11-02 19:56:25,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.470873786407767) internal successors, (303), 206 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:25,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 303 transitions. [2022-11-02 19:56:25,820 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 303 transitions. Word has length 19 [2022-11-02 19:56:25,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:56:25,820 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 303 transitions. [2022-11-02 19:56:25,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:25,821 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 303 transitions. [2022-11-02 19:56:25,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-02 19:56:25,822 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:56:25,822 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:56:25,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-02 19:56:26,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:56:26,042 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:56:26,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:56:26,043 INFO L85 PathProgramCache]: Analyzing trace with hash 328461373, now seen corresponding path program 1 times [2022-11-02 19:56:26,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:56:26,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1663409467] [2022-11-02 19:56:26,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:56:26,044 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:56:26,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:56:26,046 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:56:26,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-02 19:56:26,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:26,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 19:56:26,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:56:26,584 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 19:56:26,584 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:56:26,585 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:56:26,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1663409467] [2022-11-02 19:56:26,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1663409467] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:56:26,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:56:26,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 19:56:26,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984481180] [2022-11-02 19:56:26,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:56:26,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 19:56:26,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:56:26,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 19:56:26,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 19:56:26,588 INFO L87 Difference]: Start difference. First operand 207 states and 303 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:26,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:56:26,650 INFO L93 Difference]: Finished difference Result 421 states and 613 transitions. [2022-11-02 19:56:26,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 19:56:26,651 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2022-11-02 19:56:26,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:56:26,653 INFO L225 Difference]: With dead ends: 421 [2022-11-02 19:56:26,653 INFO L226 Difference]: Without dead ends: 216 [2022-11-02 19:56:26,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 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 19:56:26,655 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 591 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 591 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:56:26,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [591 Valid, 303 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 19:56:26,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2022-11-02 19:56:26,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 207. [2022-11-02 19:56:26,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.4660194174757282) internal successors, (302), 206 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:26,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 302 transitions. [2022-11-02 19:56:26,663 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 302 transitions. Word has length 19 [2022-11-02 19:56:26,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:56:26,663 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 302 transitions. [2022-11-02 19:56:26,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:26,664 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 302 transitions. [2022-11-02 19:56:26,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-02 19:56:26,665 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:56:26,665 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:56:26,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-02 19:56:26,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:56:26,886 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:56:26,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:56:26,887 INFO L85 PathProgramCache]: Analyzing trace with hash -480885253, now seen corresponding path program 1 times [2022-11-02 19:56:26,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:56:26,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [51683525] [2022-11-02 19:56:26,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:56:26,887 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:56:26,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:56:26,889 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:56:26,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-02 19:56:27,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:27,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 19:56:27,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:56:27,409 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 19:56:27,410 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:56:27,410 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:56:27,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [51683525] [2022-11-02 19:56:27,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [51683525] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:56:27,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:56:27,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 19:56:27,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747557491] [2022-11-02 19:56:27,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:56:27,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 19:56:27,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:56:27,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 19:56:27,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 19:56:27,413 INFO L87 Difference]: Start difference. First operand 207 states and 302 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:27,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:56:27,482 INFO L93 Difference]: Finished difference Result 423 states and 613 transitions. [2022-11-02 19:56:27,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 19:56:27,483 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2022-11-02 19:56:27,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:56:27,484 INFO L225 Difference]: With dead ends: 423 [2022-11-02 19:56:27,485 INFO L226 Difference]: Without dead ends: 218 [2022-11-02 19:56:27,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 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 19:56:27,492 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 587 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 587 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:56:27,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [587 Valid, 304 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 19:56:27,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2022-11-02 19:56:27,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 207. [2022-11-02 19:56:27,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.4611650485436893) internal successors, (301), 206 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:27,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 301 transitions. [2022-11-02 19:56:27,502 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 301 transitions. Word has length 19 [2022-11-02 19:56:27,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:56:27,503 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 301 transitions. [2022-11-02 19:56:27,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:27,503 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 301 transitions. [2022-11-02 19:56:27,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-02 19:56:27,504 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:56:27,504 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:56:27,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-02 19:56:27,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:56:27,719 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:56:27,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:56:27,720 INFO L85 PathProgramCache]: Analyzing trace with hash -423626951, now seen corresponding path program 1 times [2022-11-02 19:56:27,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:56:27,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [935463469] [2022-11-02 19:56:27,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:56:27,721 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:56:27,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:56:27,725 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:56:27,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-02 19:56:28,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:28,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 19:56:28,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:56:28,246 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 19:56:28,246 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:56:28,247 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:56:28,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [935463469] [2022-11-02 19:56:28,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [935463469] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:56:28,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:56:28,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 19:56:28,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181476991] [2022-11-02 19:56:28,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:56:28,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 19:56:28,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:56:28,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 19:56:28,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 19:56:28,250 INFO L87 Difference]: Start difference. First operand 207 states and 301 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:28,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:56:28,325 INFO L93 Difference]: Finished difference Result 425 states and 613 transitions. [2022-11-02 19:56:28,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 19:56:28,326 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2022-11-02 19:56:28,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:56:28,327 INFO L225 Difference]: With dead ends: 425 [2022-11-02 19:56:28,327 INFO L226 Difference]: Without dead ends: 220 [2022-11-02 19:56:28,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 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 19:56:28,329 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 583 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:56:28,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [583 Valid, 305 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 19:56:28,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2022-11-02 19:56:28,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 207. [2022-11-02 19:56:28,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.4563106796116505) internal successors, (300), 206 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:28,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 300 transitions. [2022-11-02 19:56:28,337 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 300 transitions. Word has length 19 [2022-11-02 19:56:28,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:56:28,338 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 300 transitions. [2022-11-02 19:56:28,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:28,339 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 300 transitions. [2022-11-02 19:56:28,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-02 19:56:28,339 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:56:28,340 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:56:28,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-02 19:56:28,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:56:28,555 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:56:28,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:56:28,556 INFO L85 PathProgramCache]: Analyzing trace with hash -423567369, now seen corresponding path program 1 times [2022-11-02 19:56:28,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:56:28,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1111489840] [2022-11-02 19:56:28,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:56:28,557 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:56:28,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:56:28,558 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:56:28,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-02 19:56:28,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:28,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-02 19:56:28,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:56:29,759 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 19:56:29,759 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:56:29,760 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:56:29,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1111489840] [2022-11-02 19:56:29,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1111489840] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:56:29,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:56:29,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 19:56:29,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115203663] [2022-11-02 19:56:29,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:56:29,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 19:56:29,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:56:29,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 19:56:29,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-02 19:56:29,764 INFO L87 Difference]: Start difference. First operand 207 states and 300 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:31,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:56:31,634 INFO L93 Difference]: Finished difference Result 427 states and 613 transitions. [2022-11-02 19:56:31,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 19:56:31,637 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2022-11-02 19:56:31,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:56:31,640 INFO L225 Difference]: With dead ends: 427 [2022-11-02 19:56:31,640 INFO L226 Difference]: Without dead ends: 425 [2022-11-02 19:56:31,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2022-11-02 19:56:31,641 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 1425 mSDsluCounter, 1842 mSDsCounter, 0 mSdLazyCounter, 717 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1425 SdHoareTripleChecker+Valid, 2069 SdHoareTripleChecker+Invalid, 726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-02 19:56:31,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1425 Valid, 2069 Invalid, 726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 717 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-02 19:56:31,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2022-11-02 19:56:31,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 223. [2022-11-02 19:56:31,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 222 states have (on average 1.4234234234234233) internal successors, (316), 222 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:31,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 316 transitions. [2022-11-02 19:56:31,653 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 316 transitions. Word has length 19 [2022-11-02 19:56:31,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:56:31,654 INFO L495 AbstractCegarLoop]: Abstraction has 223 states and 316 transitions. [2022-11-02 19:56:31,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:31,654 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 316 transitions. [2022-11-02 19:56:31,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-02 19:56:31,660 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:56:31,661 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:56:31,682 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-02 19:56:31,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:56:31,877 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:56:31,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:56:31,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1804109241, now seen corresponding path program 1 times [2022-11-02 19:56:31,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:56:31,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [735156587] [2022-11-02 19:56:31,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:56:31,880 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:56:31,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:56:31,881 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:56:31,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-02 19:56:32,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:32,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 19:56:32,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:56:33,145 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:56:33,146 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:56:33,146 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:56:33,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [735156587] [2022-11-02 19:56:33,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [735156587] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:56:33,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:56:33,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 19:56:33,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376373120] [2022-11-02 19:56:33,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:56:33,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 19:56:33,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:56:33,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 19:56:33,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:56:33,151 INFO L87 Difference]: Start difference. First operand 223 states and 316 transitions. Second operand has 7 states, 7 states have (on average 31.714285714285715) internal successors, (222), 7 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:33,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:56:33,600 INFO L93 Difference]: Finished difference Result 838 states and 1209 transitions. [2022-11-02 19:56:33,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 19:56:33,601 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 31.714285714285715) internal successors, (222), 7 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2022-11-02 19:56:33,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:56:33,604 INFO L225 Difference]: With dead ends: 838 [2022-11-02 19:56:33,604 INFO L226 Difference]: Without dead ends: 633 [2022-11-02 19:56:33,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 19:56:33,606 INFO L413 NwaCegarLoop]: 313 mSDtfsCounter, 1172 mSDsluCounter, 1382 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1172 SdHoareTripleChecker+Valid, 1695 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 19:56:33,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1172 Valid, 1695 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 100 Invalid, 0 Unknown, 17 Unchecked, 0.4s Time] [2022-11-02 19:56:33,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2022-11-02 19:56:33,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 229. [2022-11-02 19:56:33,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 228 states have (on average 1.4210526315789473) internal successors, (324), 228 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:33,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 324 transitions. [2022-11-02 19:56:33,618 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 324 transitions. Word has length 222 [2022-11-02 19:56:33,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:56:33,618 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 324 transitions. [2022-11-02 19:56:33,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 31.714285714285715) internal successors, (222), 7 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:33,619 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 324 transitions. [2022-11-02 19:56:33,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-02 19:56:33,622 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:56:33,623 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:56:33,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-02 19:56:33,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:56:33,842 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:56:33,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:56:33,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1520123703, now seen corresponding path program 1 times [2022-11-02 19:56:33,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:56:33,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1727378712] [2022-11-02 19:56:33,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:56:33,845 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:56:33,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:56:33,847 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:56:33,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-02 19:56:34,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:34,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 19:56:34,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:56:35,119 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:56:35,119 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:56:35,119 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:56:35,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1727378712] [2022-11-02 19:56:35,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1727378712] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:56:35,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:56:35,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 19:56:35,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826072332] [2022-11-02 19:56:35,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:56:35,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 19:56:35,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:56:35,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 19:56:35,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:56:35,123 INFO L87 Difference]: Start difference. First operand 229 states and 324 transitions. Second operand has 7 states, 7 states have (on average 31.714285714285715) internal successors, (222), 7 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:35,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:56:35,603 INFO L93 Difference]: Finished difference Result 838 states and 1208 transitions. [2022-11-02 19:56:35,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 19:56:35,604 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 31.714285714285715) internal successors, (222), 7 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2022-11-02 19:56:35,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:56:35,607 INFO L225 Difference]: With dead ends: 838 [2022-11-02 19:56:35,607 INFO L226 Difference]: Without dead ends: 633 [2022-11-02 19:56:35,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 19:56:35,608 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 1165 mSDsluCounter, 1379 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1165 SdHoareTripleChecker+Valid, 1695 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 20 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 19:56:35,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1165 Valid, 1695 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 102 Invalid, 0 Unknown, 20 Unchecked, 0.4s Time] [2022-11-02 19:56:35,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2022-11-02 19:56:35,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 231. [2022-11-02 19:56:35,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 230 states have (on average 1.4173913043478261) internal successors, (326), 230 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:35,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 326 transitions. [2022-11-02 19:56:35,621 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 326 transitions. Word has length 222 [2022-11-02 19:56:35,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:56:35,622 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 326 transitions. [2022-11-02 19:56:35,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 31.714285714285715) internal successors, (222), 7 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:35,623 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 326 transitions. [2022-11-02 19:56:35,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-02 19:56:35,627 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:56:35,627 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:56:35,663 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-02 19:56:35,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:56:35,850 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:56:35,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:56:35,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1050001355, now seen corresponding path program 1 times [2022-11-02 19:56:35,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:56:35,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1852475518] [2022-11-02 19:56:35,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:56:35,852 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:56:35,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:56:35,853 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:56:35,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-02 19:56:36,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:36,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 19:56:36,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:56:37,051 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:56:37,051 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:56:37,051 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:56:37,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1852475518] [2022-11-02 19:56:37,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1852475518] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:56:37,052 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:56:37,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 19:56:37,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155092837] [2022-11-02 19:56:37,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:56:37,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 19:56:37,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:56:37,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 19:56:37,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:56:37,055 INFO L87 Difference]: Start difference. First operand 231 states and 326 transitions. Second operand has 7 states, 7 states have (on average 31.714285714285715) internal successors, (222), 7 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:38,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:56:38,163 INFO L93 Difference]: Finished difference Result 851 states and 1225 transitions. [2022-11-02 19:56:38,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 19:56:38,164 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 31.714285714285715) internal successors, (222), 7 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2022-11-02 19:56:38,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:56:38,167 INFO L225 Difference]: With dead ends: 851 [2022-11-02 19:56:38,167 INFO L226 Difference]: Without dead ends: 646 [2022-11-02 19:56:38,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-11-02 19:56:38,169 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 2017 mSDsluCounter, 942 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2017 SdHoareTripleChecker+Valid, 1184 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 19:56:38,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2017 Valid, 1184 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-02 19:56:38,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2022-11-02 19:56:38,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 235. [2022-11-02 19:56:38,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 234 states have (on average 1.4145299145299146) internal successors, (331), 234 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:38,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 331 transitions. [2022-11-02 19:56:38,185 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 331 transitions. Word has length 222 [2022-11-02 19:56:38,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:56:38,187 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 331 transitions. [2022-11-02 19:56:38,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 31.714285714285715) internal successors, (222), 7 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:38,188 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 331 transitions. [2022-11-02 19:56:38,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-02 19:56:38,191 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:56:38,192 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:56:38,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-02 19:56:38,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:56:38,419 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:56:38,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:56:38,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1231120563, now seen corresponding path program 1 times [2022-11-02 19:56:38,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:56:38,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1322042070] [2022-11-02 19:56:38,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:56:38,422 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:56:38,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:56:38,425 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:56:38,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-02 19:56:39,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:39,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 19:56:39,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:56:39,752 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:56:39,752 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:56:39,752 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:56:39,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1322042070] [2022-11-02 19:56:39,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1322042070] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:56:39,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:56:39,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 19:56:39,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461735524] [2022-11-02 19:56:39,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:56:39,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 19:56:39,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:56:39,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 19:56:39,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:56:39,756 INFO L87 Difference]: Start difference. First operand 235 states and 331 transitions. Second operand has 7 states, 7 states have (on average 31.714285714285715) internal successors, (222), 7 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:40,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:56:40,911 INFO L93 Difference]: Finished difference Result 857 states and 1231 transitions. [2022-11-02 19:56:40,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 19:56:40,912 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 31.714285714285715) internal successors, (222), 7 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2022-11-02 19:56:40,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:56:40,915 INFO L225 Difference]: With dead ends: 857 [2022-11-02 19:56:40,915 INFO L226 Difference]: Without dead ends: 648 [2022-11-02 19:56:40,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-11-02 19:56:40,917 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 2009 mSDsluCounter, 950 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2009 SdHoareTripleChecker+Valid, 1197 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:56:40,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2009 Valid, 1197 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-02 19:56:40,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2022-11-02 19:56:40,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 237. [2022-11-02 19:56:40,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 236 states have (on average 1.4110169491525424) internal successors, (333), 236 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:40,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 333 transitions. [2022-11-02 19:56:40,930 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 333 transitions. Word has length 222 [2022-11-02 19:56:40,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:56:40,930 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 333 transitions. [2022-11-02 19:56:40,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 31.714285714285715) internal successors, (222), 7 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:40,937 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 333 transitions. [2022-11-02 19:56:40,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-02 19:56:40,940 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:56:40,940 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:56:40,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-02 19:56:41,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:56:41,157 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:56:41,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:56:41,158 INFO L85 PathProgramCache]: Analyzing trace with hash 983263055, now seen corresponding path program 1 times [2022-11-02 19:56:41,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:56:41,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1452068789] [2022-11-02 19:56:41,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:56:41,160 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:56:41,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:56:41,161 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:56:41,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-02 19:56:42,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:42,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 19:56:42,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:56:42,405 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:56:42,406 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:56:42,406 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:56:42,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1452068789] [2022-11-02 19:56:42,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1452068789] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:56:42,406 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:56:42,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 19:56:42,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745447183] [2022-11-02 19:56:42,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:56:42,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 19:56:42,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:56:42,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 19:56:42,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:56:42,409 INFO L87 Difference]: Start difference. First operand 237 states and 333 transitions. Second operand has 7 states, 7 states have (on average 31.714285714285715) internal successors, (222), 7 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:43,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:56:43,484 INFO L93 Difference]: Finished difference Result 861 states and 1234 transitions. [2022-11-02 19:56:43,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 19:56:43,485 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 31.714285714285715) internal successors, (222), 7 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2022-11-02 19:56:43,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:56:43,488 INFO L225 Difference]: With dead ends: 861 [2022-11-02 19:56:43,489 INFO L226 Difference]: Without dead ends: 650 [2022-11-02 19:56:43,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-11-02 19:56:43,490 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 2001 mSDsluCounter, 953 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2001 SdHoareTripleChecker+Valid, 1203 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 19:56:43,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2001 Valid, 1203 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-02 19:56:43,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2022-11-02 19:56:43,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 239. [2022-11-02 19:56:43,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 238 states have (on average 1.4075630252100841) internal successors, (335), 238 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:43,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 335 transitions. [2022-11-02 19:56:43,504 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 335 transitions. Word has length 222 [2022-11-02 19:56:43,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:56:43,504 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 335 transitions. [2022-11-02 19:56:43,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 31.714285714285715) internal successors, (222), 7 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:43,505 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 335 transitions. [2022-11-02 19:56:43,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-02 19:56:43,508 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:56:43,508 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:56:43,544 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2022-11-02 19:56:43,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:56:43,725 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:56:43,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:56:43,725 INFO L85 PathProgramCache]: Analyzing trace with hash -802140207, now seen corresponding path program 1 times [2022-11-02 19:56:43,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:56:43,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1656070919] [2022-11-02 19:56:43,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:56:43,727 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:56:43,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:56:43,728 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:56:43,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-02 19:56:44,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:44,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 19:56:44,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:56:45,009 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:56:45,010 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:56:45,010 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:56:45,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1656070919] [2022-11-02 19:56:45,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1656070919] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:56:45,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:56:45,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 19:56:45,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661508340] [2022-11-02 19:56:45,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:56:45,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 19:56:45,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:56:45,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 19:56:45,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:56:45,013 INFO L87 Difference]: Start difference. First operand 239 states and 335 transitions. Second operand has 7 states, 7 states have (on average 31.714285714285715) internal successors, (222), 7 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:46,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:56:46,055 INFO L93 Difference]: Finished difference Result 865 states and 1237 transitions. [2022-11-02 19:56:46,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 19:56:46,056 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 31.714285714285715) internal successors, (222), 7 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2022-11-02 19:56:46,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:56:46,060 INFO L225 Difference]: With dead ends: 865 [2022-11-02 19:56:46,060 INFO L226 Difference]: Without dead ends: 652 [2022-11-02 19:56:46,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-11-02 19:56:46,062 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 1993 mSDsluCounter, 956 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1993 SdHoareTripleChecker+Valid, 1209 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 19:56:46,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1993 Valid, 1209 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-02 19:56:46,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2022-11-02 19:56:46,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 241. [2022-11-02 19:56:46,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 240 states have (on average 1.4041666666666666) internal successors, (337), 240 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:46,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 337 transitions. [2022-11-02 19:56:46,075 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 337 transitions. Word has length 222 [2022-11-02 19:56:46,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:56:46,076 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 337 transitions. [2022-11-02 19:56:46,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 31.714285714285715) internal successors, (222), 7 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:46,076 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 337 transitions. [2022-11-02 19:56:46,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-02 19:56:46,080 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:56:46,080 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:56:46,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-02 19:56:46,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:56:46,297 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:56:46,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:56:46,298 INFO L85 PathProgramCache]: Analyzing trace with hash -678858541, now seen corresponding path program 1 times [2022-11-02 19:56:46,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:56:46,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [964528821] [2022-11-02 19:56:46,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:56:46,301 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:56:46,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:56:46,303 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:56:46,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-02 19:56:47,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:47,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 19:56:47,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:56:47,499 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:56:47,500 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:56:47,500 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:56:47,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [964528821] [2022-11-02 19:56:47,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [964528821] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:56:47,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:56:47,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 19:56:47,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670603170] [2022-11-02 19:56:47,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:56:47,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 19:56:47,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:56:47,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 19:56:47,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:56:47,503 INFO L87 Difference]: Start difference. First operand 241 states and 337 transitions. Second operand has 7 states, 7 states have (on average 31.714285714285715) internal successors, (222), 7 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:48,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:56:48,536 INFO L93 Difference]: Finished difference Result 869 states and 1240 transitions. [2022-11-02 19:56:48,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 19:56:48,541 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 31.714285714285715) internal successors, (222), 7 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2022-11-02 19:56:48,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:56:48,544 INFO L225 Difference]: With dead ends: 869 [2022-11-02 19:56:48,544 INFO L226 Difference]: Without dead ends: 654 [2022-11-02 19:56:48,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-11-02 19:56:48,546 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 1985 mSDsluCounter, 959 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1985 SdHoareTripleChecker+Valid, 1215 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 19:56:48,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1985 Valid, 1215 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-02 19:56:48,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2022-11-02 19:56:48,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 243. [2022-11-02 19:56:48,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 242 states have (on average 1.4008264462809918) internal successors, (339), 242 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:48,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 339 transitions. [2022-11-02 19:56:48,560 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 339 transitions. Word has length 222 [2022-11-02 19:56:48,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:56:48,560 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 339 transitions. [2022-11-02 19:56:48,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 31.714285714285715) internal successors, (222), 7 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:48,561 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 339 transitions. [2022-11-02 19:56:48,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-02 19:56:48,567 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:56:48,568 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:56:48,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-02 19:56:48,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:56:48,769 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:56:48,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:56:48,769 INFO L85 PathProgramCache]: Analyzing trace with hash 224062037, now seen corresponding path program 1 times [2022-11-02 19:56:48,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:56:48,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2102828896] [2022-11-02 19:56:48,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:56:48,772 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:56:48,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:56:48,774 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:56:48,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-02 19:56:49,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:49,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 19:56:49,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:56:50,088 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:56:50,088 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:56:50,089 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:56:50,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2102828896] [2022-11-02 19:56:50,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2102828896] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:56:50,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:56:50,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 19:56:50,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279465280] [2022-11-02 19:56:50,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:56:50,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 19:56:50,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:56:50,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 19:56:50,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:56:50,091 INFO L87 Difference]: Start difference. First operand 243 states and 339 transitions. Second operand has 7 states, 7 states have (on average 31.714285714285715) internal successors, (222), 7 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:51,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:56:51,117 INFO L93 Difference]: Finished difference Result 873 states and 1243 transitions. [2022-11-02 19:56:51,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 19:56:51,118 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 31.714285714285715) internal successors, (222), 7 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2022-11-02 19:56:51,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:56:51,121 INFO L225 Difference]: With dead ends: 873 [2022-11-02 19:56:51,121 INFO L226 Difference]: Without dead ends: 656 [2022-11-02 19:56:51,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-11-02 19:56:51,123 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 1977 mSDsluCounter, 962 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1977 SdHoareTripleChecker+Valid, 1221 SdHoareTripleChecker+Invalid, 470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 19:56:51,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1977 Valid, 1221 Invalid, 470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 463 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-02 19:56:51,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2022-11-02 19:56:51,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 245. [2022-11-02 19:56:51,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 244 states have (on average 1.3975409836065573) internal successors, (341), 244 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 19:56:51,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 341 transitions. [2022-11-02 19:56:51,137 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 341 transitions. Word has length 222 [2022-11-02 19:56:51,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:56:51,137 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 341 transitions. [2022-11-02 19:56:51,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 31.714285714285715) internal successors, (222), 7 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:51,138 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 341 transitions. [2022-11-02 19:56:51,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-02 19:56:51,140 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:56:51,140 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:56:51,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-02 19:56:51,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:56:51,367 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:56:51,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:56:51,367 INFO L85 PathProgramCache]: Analyzing trace with hash 216063063, now seen corresponding path program 1 times [2022-11-02 19:56:51,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:56:51,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1702341030] [2022-11-02 19:56:51,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:56:51,370 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:56:51,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:56:51,371 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:56:51,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-02 19:56:52,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:52,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 19:56:52,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:56:52,576 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:56:52,576 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:56:52,577 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:56:52,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1702341030] [2022-11-02 19:56:52,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1702341030] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:56:52,577 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:56:52,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 19:56:52,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326208526] [2022-11-02 19:56:52,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:56:52,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 19:56:52,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:56:52,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 19:56:52,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:56:52,580 INFO L87 Difference]: Start difference. First operand 245 states and 341 transitions. Second operand has 7 states, 7 states have (on average 31.714285714285715) internal successors, (222), 7 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:53,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:56:53,635 INFO L93 Difference]: Finished difference Result 879 states and 1249 transitions. [2022-11-02 19:56:53,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 19:56:53,636 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 31.714285714285715) internal successors, (222), 7 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2022-11-02 19:56:53,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:56:53,639 INFO L225 Difference]: With dead ends: 879 [2022-11-02 19:56:53,639 INFO L226 Difference]: Without dead ends: 660 [2022-11-02 19:56:53,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-11-02 19:56:53,641 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 1964 mSDsluCounter, 969 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1964 SdHoareTripleChecker+Valid, 1235 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 19:56:53,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1964 Valid, 1235 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-02 19:56:53,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2022-11-02 19:56:53,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 249. [2022-11-02 19:56:53,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 248 states have (on average 1.3951612903225807) internal successors, (346), 248 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:53,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 346 transitions. [2022-11-02 19:56:53,654 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 346 transitions. Word has length 222 [2022-11-02 19:56:53,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:56:53,655 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 346 transitions. [2022-11-02 19:56:53,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 31.714285714285715) internal successors, (222), 7 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:53,655 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 346 transitions. [2022-11-02 19:56:53,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-02 19:56:53,657 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:56:53,657 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:56:53,685 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-02 19:56:53,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:56:53,875 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:56:53,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:56:53,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1973690201, now seen corresponding path program 1 times [2022-11-02 19:56:53,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:56:53,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2072311474] [2022-11-02 19:56:53,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:56:53,877 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:56:53,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:56:53,878 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:56:53,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-02 19:56:54,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:54,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 19:56:54,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:56:55,142 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:56:55,142 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:56:55,142 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:56:55,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2072311474] [2022-11-02 19:56:55,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2072311474] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:56:55,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:56:55,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 19:56:55,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490602507] [2022-11-02 19:56:55,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:56:55,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 19:56:55,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:56:55,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 19:56:55,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:56:55,146 INFO L87 Difference]: Start difference. First operand 249 states and 346 transitions. Second operand has 7 states, 7 states have (on average 31.714285714285715) internal successors, (222), 7 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:56,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:56:56,220 INFO L93 Difference]: Finished difference Result 885 states and 1255 transitions. [2022-11-02 19:56:56,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 19:56:56,221 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 31.714285714285715) internal successors, (222), 7 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2022-11-02 19:56:56,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:56:56,225 INFO L225 Difference]: With dead ends: 885 [2022-11-02 19:56:56,225 INFO L226 Difference]: Without dead ends: 662 [2022-11-02 19:56:56,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-11-02 19:56:56,226 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 1956 mSDsluCounter, 972 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1956 SdHoareTripleChecker+Valid, 1241 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 19:56:56,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1956 Valid, 1241 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-02 19:56:56,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2022-11-02 19:56:56,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 251. [2022-11-02 19:56:56,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 250 states have (on average 1.392) internal successors, (348), 250 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:56,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 348 transitions. [2022-11-02 19:56:56,243 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 348 transitions. Word has length 222 [2022-11-02 19:56:56,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:56:56,245 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 348 transitions. [2022-11-02 19:56:56,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 31.714285714285715) internal successors, (222), 7 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:56,246 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 348 transitions. [2022-11-02 19:56:56,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-02 19:56:56,247 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:56:56,248 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:56:56,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-02 19:56:56,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:56:56,475 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:56:56,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:56:56,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1157642971, now seen corresponding path program 1 times [2022-11-02 19:56:56,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:56:56,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1775053251] [2022-11-02 19:56:56,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:56:56,478 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:56:56,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:56:56,479 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:56:56,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-02 19:56:57,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:56:57,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 19:56:57,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:56:57,737 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:56:57,737 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:56:57,738 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:56:57,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1775053251] [2022-11-02 19:56:57,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1775053251] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:56:57,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:56:57,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 19:56:57,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460866057] [2022-11-02 19:56:57,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:56:57,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 19:56:57,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:56:57,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 19:56:57,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:56:57,741 INFO L87 Difference]: Start difference. First operand 251 states and 348 transitions. Second operand has 7 states, 7 states have (on average 31.714285714285715) internal successors, (222), 7 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:58,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:56:58,809 INFO L93 Difference]: Finished difference Result 889 states and 1258 transitions. [2022-11-02 19:56:58,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 19:56:58,810 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 31.714285714285715) internal successors, (222), 7 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2022-11-02 19:56:58,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:56:58,812 INFO L225 Difference]: With dead ends: 889 [2022-11-02 19:56:58,812 INFO L226 Difference]: Without dead ends: 664 [2022-11-02 19:56:58,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-11-02 19:56:58,814 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 1948 mSDsluCounter, 975 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1948 SdHoareTripleChecker+Valid, 1247 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 19:56:58,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1948 Valid, 1247 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-02 19:56:58,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2022-11-02 19:56:58,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 253. [2022-11-02 19:56:58,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 252 states have (on average 1.3888888888888888) internal successors, (350), 252 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:58,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 350 transitions. [2022-11-02 19:56:58,827 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 350 transitions. Word has length 222 [2022-11-02 19:56:58,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:56:58,828 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 350 transitions. [2022-11-02 19:56:58,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 31.714285714285715) internal successors, (222), 7 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:56:58,829 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 350 transitions. [2022-11-02 19:56:58,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-02 19:56:58,830 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:56:58,830 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:56:58,854 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-02 19:56:59,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:56:59,037 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:56:59,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:56:59,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1538175267, now seen corresponding path program 1 times [2022-11-02 19:56:59,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:56:59,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [667031369] [2022-11-02 19:56:59,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:56:59,040 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:56:59,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:56:59,041 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:56:59,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-02 19:56:59,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:57:00,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 19:57:00,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:57:00,323 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:57:00,324 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:57:00,324 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:57:00,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [667031369] [2022-11-02 19:57:00,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [667031369] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:57:00,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:57:00,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 19:57:00,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524700536] [2022-11-02 19:57:00,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:57:00,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 19:57:00,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:57:00,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 19:57:00,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:57:00,327 INFO L87 Difference]: Start difference. First operand 253 states and 350 transitions. Second operand has 7 states, 7 states have (on average 31.714285714285715) internal successors, (222), 7 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:01,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:57:01,404 INFO L93 Difference]: Finished difference Result 893 states and 1261 transitions. [2022-11-02 19:57:01,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 19:57:01,405 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 31.714285714285715) internal successors, (222), 7 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2022-11-02 19:57:01,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:57:01,409 INFO L225 Difference]: With dead ends: 893 [2022-11-02 19:57:01,409 INFO L226 Difference]: Without dead ends: 666 [2022-11-02 19:57:01,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-11-02 19:57:01,416 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 1940 mSDsluCounter, 978 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1940 SdHoareTripleChecker+Valid, 1253 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 19:57:01,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1940 Valid, 1253 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-02 19:57:01,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2022-11-02 19:57:01,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 255. [2022-11-02 19:57:01,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 254 states have (on average 1.3858267716535433) internal successors, (352), 254 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:01,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 352 transitions. [2022-11-02 19:57:01,431 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 352 transitions. Word has length 222 [2022-11-02 19:57:01,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:57:01,431 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 352 transitions. [2022-11-02 19:57:01,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 31.714285714285715) internal successors, (222), 7 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:01,432 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 352 transitions. [2022-11-02 19:57:01,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-02 19:57:01,433 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:57:01,434 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:57:01,464 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-02 19:57:01,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:57:01,657 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:57:01,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:57:01,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1518634145, now seen corresponding path program 1 times [2022-11-02 19:57:01,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:57:01,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1905959758] [2022-11-02 19:57:01,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:57:01,660 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:57:01,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:57:01,661 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:57:01,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-02 19:57:02,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:57:02,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 19:57:02,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:57:02,935 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:57:02,936 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:57:02,936 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:57:02,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1905959758] [2022-11-02 19:57:02,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1905959758] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:57:02,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:57:02,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 19:57:02,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604022680] [2022-11-02 19:57:02,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:57:02,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 19:57:02,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:57:02,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 19:57:02,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:57:02,939 INFO L87 Difference]: Start difference. First operand 255 states and 352 transitions. Second operand has 7 states, 7 states have (on average 31.714285714285715) internal successors, (222), 7 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:04,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:57:04,061 INFO L93 Difference]: Finished difference Result 897 states and 1264 transitions. [2022-11-02 19:57:04,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 19:57:04,062 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 31.714285714285715) internal successors, (222), 7 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2022-11-02 19:57:04,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:57:04,065 INFO L225 Difference]: With dead ends: 897 [2022-11-02 19:57:04,066 INFO L226 Difference]: Without dead ends: 668 [2022-11-02 19:57:04,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-11-02 19:57:04,068 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 1932 mSDsluCounter, 981 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1932 SdHoareTripleChecker+Valid, 1259 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:57:04,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1932 Valid, 1259 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-02 19:57:04,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2022-11-02 19:57:04,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 257. [2022-11-02 19:57:04,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 256 states have (on average 1.3828125) internal successors, (354), 256 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:04,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 354 transitions. [2022-11-02 19:57:04,082 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 354 transitions. Word has length 222 [2022-11-02 19:57:04,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:57:04,083 INFO L495 AbstractCegarLoop]: Abstraction has 257 states and 354 transitions. [2022-11-02 19:57:04,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 31.714285714285715) internal successors, (222), 7 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:04,083 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 354 transitions. [2022-11-02 19:57:04,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-02 19:57:04,085 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:57:04,085 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:57:04,121 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-02 19:57:04,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:57:04,309 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:57:04,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:57:04,310 INFO L85 PathProgramCache]: Analyzing trace with hash -991240095, now seen corresponding path program 1 times [2022-11-02 19:57:04,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:57:04,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [609569640] [2022-11-02 19:57:04,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:57:04,312 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:57:04,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:57:04,314 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:57:04,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-02 19:57:05,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:57:05,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 19:57:05,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:57:05,635 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:57:05,635 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:57:05,635 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:57:05,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [609569640] [2022-11-02 19:57:05,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [609569640] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:57:05,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:57:05,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 19:57:05,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795588332] [2022-11-02 19:57:05,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:57:05,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 19:57:05,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:57:05,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 19:57:05,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:57:05,638 INFO L87 Difference]: Start difference. First operand 257 states and 354 transitions. Second operand has 7 states, 7 states have (on average 31.714285714285715) internal successors, (222), 7 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:06,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:57:06,727 INFO L93 Difference]: Finished difference Result 901 states and 1267 transitions. [2022-11-02 19:57:06,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 19:57:06,730 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 31.714285714285715) internal successors, (222), 7 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2022-11-02 19:57:06,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:57:06,733 INFO L225 Difference]: With dead ends: 901 [2022-11-02 19:57:06,733 INFO L226 Difference]: Without dead ends: 670 [2022-11-02 19:57:06,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-11-02 19:57:06,735 INFO L413 NwaCegarLoop]: 281 mSDtfsCounter, 1924 mSDsluCounter, 984 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1924 SdHoareTripleChecker+Valid, 1265 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:57:06,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1924 Valid, 1265 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-02 19:57:06,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2022-11-02 19:57:06,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 259. [2022-11-02 19:57:06,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 258 states have (on average 1.37984496124031) internal successors, (356), 258 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:06,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 356 transitions. [2022-11-02 19:57:06,748 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 356 transitions. Word has length 222 [2022-11-02 19:57:06,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:57:06,748 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 356 transitions. [2022-11-02 19:57:06,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 31.714285714285715) internal successors, (222), 7 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:06,749 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 356 transitions. [2022-11-02 19:57:06,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-02 19:57:06,751 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:57:06,751 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:57:06,785 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-02 19:57:06,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:57:06,965 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:57:06,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:57:06,965 INFO L85 PathProgramCache]: Analyzing trace with hash -342647325, now seen corresponding path program 1 times [2022-11-02 19:57:06,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:57:06,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1834097453] [2022-11-02 19:57:06,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:57:06,967 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:57:06,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:57:06,969 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:57:06,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-02 19:57:07,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:57:07,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 19:57:07,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:57:08,208 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:57:08,208 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:57:08,209 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:57:08,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1834097453] [2022-11-02 19:57:08,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1834097453] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:57:08,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:57:08,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 19:57:08,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771207144] [2022-11-02 19:57:08,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:57:08,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:57:08,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:57:08,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:57:08,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:57:08,212 INFO L87 Difference]: Start difference. First operand 259 states and 356 transitions. Second operand has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:09,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:57:09,586 INFO L93 Difference]: Finished difference Result 919 states and 1289 transitions. [2022-11-02 19:57:09,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 19:57:09,594 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2022-11-02 19:57:09,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:57:09,596 INFO L225 Difference]: With dead ends: 919 [2022-11-02 19:57:09,597 INFO L226 Difference]: Without dead ends: 686 [2022-11-02 19:57:09,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-02 19:57:09,604 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 2204 mSDsluCounter, 1447 mSDsCounter, 0 mSdLazyCounter, 670 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2204 SdHoareTripleChecker+Valid, 1735 SdHoareTripleChecker+Invalid, 680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:57:09,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2204 Valid, 1735 Invalid, 680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 670 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-02 19:57:09,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2022-11-02 19:57:09,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 263. [2022-11-02 19:57:09,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 262 states have (on average 1.3778625954198473) internal successors, (361), 262 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:09,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 361 transitions. [2022-11-02 19:57:09,618 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 361 transitions. Word has length 222 [2022-11-02 19:57:09,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:57:09,619 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 361 transitions. [2022-11-02 19:57:09,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:09,619 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 361 transitions. [2022-11-02 19:57:09,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-02 19:57:09,621 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:57:09,621 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:57:09,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-02 19:57:09,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:57:09,844 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:57:09,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:57:09,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1750373275, now seen corresponding path program 1 times [2022-11-02 19:57:09,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:57:09,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1625185530] [2022-11-02 19:57:09,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:57:09,847 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:57:09,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:57:09,848 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:57:09,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-02 19:57:10,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:57:10,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 19:57:10,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:57:10,951 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:57:10,952 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:57:10,952 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:57:10,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1625185530] [2022-11-02 19:57:10,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1625185530] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:57:10,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:57:10,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 19:57:10,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876674884] [2022-11-02 19:57:10,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:57:10,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:57:10,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:57:10,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:57:10,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:57:10,955 INFO L87 Difference]: Start difference. First operand 263 states and 361 transitions. Second operand has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:12,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:57:12,106 INFO L93 Difference]: Finished difference Result 929 states and 1300 transitions. [2022-11-02 19:57:12,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 19:57:12,107 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2022-11-02 19:57:12,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:57:12,109 INFO L225 Difference]: With dead ends: 929 [2022-11-02 19:57:12,109 INFO L226 Difference]: Without dead ends: 692 [2022-11-02 19:57:12,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-02 19:57:12,110 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 2199 mSDsluCounter, 1451 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2199 SdHoareTripleChecker+Valid, 1742 SdHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:57:12,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2199 Valid, 1742 Invalid, 685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-02 19:57:12,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2022-11-02 19:57:12,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 265. [2022-11-02 19:57:12,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 264 states have (on average 1.375) internal successors, (363), 264 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:12,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 363 transitions. [2022-11-02 19:57:12,120 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 363 transitions. Word has length 222 [2022-11-02 19:57:12,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:57:12,120 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 363 transitions. [2022-11-02 19:57:12,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:12,121 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 363 transitions. [2022-11-02 19:57:12,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-02 19:57:12,122 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:57:12,122 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:57:12,152 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-02 19:57:12,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:57:12,345 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:57:12,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:57:12,345 INFO L85 PathProgramCache]: Analyzing trace with hash 621343591, now seen corresponding path program 1 times [2022-11-02 19:57:12,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:57:12,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1686107605] [2022-11-02 19:57:12,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:57:12,347 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:57:12,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:57:12,348 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:57:12,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-02 19:57:13,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:57:13,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 19:57:13,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:57:13,373 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:57:13,373 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:57:13,373 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:57:13,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1686107605] [2022-11-02 19:57:13,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1686107605] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:57:13,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:57:13,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 19:57:13,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360281548] [2022-11-02 19:57:13,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:57:13,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:57:13,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:57:13,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:57:13,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:57:13,376 INFO L87 Difference]: Start difference. First operand 265 states and 363 transitions. Second operand has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:14,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:57:14,487 INFO L93 Difference]: Finished difference Result 937 states and 1308 transitions. [2022-11-02 19:57:14,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 19:57:14,488 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2022-11-02 19:57:14,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:57:14,492 INFO L225 Difference]: With dead ends: 937 [2022-11-02 19:57:14,492 INFO L226 Difference]: Without dead ends: 698 [2022-11-02 19:57:14,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-02 19:57:14,493 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 2194 mSDsluCounter, 1455 mSDsCounter, 0 mSdLazyCounter, 680 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2194 SdHoareTripleChecker+Valid, 1749 SdHoareTripleChecker+Invalid, 690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 19:57:14,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2194 Valid, 1749 Invalid, 690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 680 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-02 19:57:14,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2022-11-02 19:57:14,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 267. [2022-11-02 19:57:14,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 266 states have (on average 1.3721804511278195) internal successors, (365), 266 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:14,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 365 transitions. [2022-11-02 19:57:14,502 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 365 transitions. Word has length 222 [2022-11-02 19:57:14,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:57:14,502 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 365 transitions. [2022-11-02 19:57:14,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:14,503 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 365 transitions. [2022-11-02 19:57:14,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-02 19:57:14,504 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:57:14,504 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:57:14,529 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-02 19:57:14,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:57:14,728 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:57:14,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:57:14,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1119900393, now seen corresponding path program 1 times [2022-11-02 19:57:14,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:57:14,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1615371280] [2022-11-02 19:57:14,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:57:14,730 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:57:14,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:57:14,731 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:57:14,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-02 19:57:15,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:57:15,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 19:57:15,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:57:15,861 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:57:15,861 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:57:15,862 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:57:15,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1615371280] [2022-11-02 19:57:15,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1615371280] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:57:15,862 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:57:15,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 19:57:15,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416402209] [2022-11-02 19:57:15,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:57:15,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:57:15,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:57:15,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:57:15,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:57:15,865 INFO L87 Difference]: Start difference. First operand 267 states and 365 transitions. Second operand has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:17,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:57:17,057 INFO L93 Difference]: Finished difference Result 945 states and 1316 transitions. [2022-11-02 19:57:17,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 19:57:17,058 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2022-11-02 19:57:17,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:57:17,061 INFO L225 Difference]: With dead ends: 945 [2022-11-02 19:57:17,061 INFO L226 Difference]: Without dead ends: 704 [2022-11-02 19:57:17,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-02 19:57:17,062 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 2189 mSDsluCounter, 1459 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2189 SdHoareTripleChecker+Valid, 1756 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:57:17,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2189 Valid, 1756 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-02 19:57:17,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2022-11-02 19:57:17,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 269. [2022-11-02 19:57:17,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 268 states have (on average 1.3694029850746268) internal successors, (367), 268 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:17,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 367 transitions. [2022-11-02 19:57:17,074 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 367 transitions. Word has length 222 [2022-11-02 19:57:17,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:57:17,074 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 367 transitions. [2022-11-02 19:57:17,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:17,075 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 367 transitions. [2022-11-02 19:57:17,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-02 19:57:17,076 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:57:17,077 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:57:17,102 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-11-02 19:57:17,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:57:17,301 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:57:17,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:57:17,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1771197717, now seen corresponding path program 1 times [2022-11-02 19:57:17,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:57:17,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [660442860] [2022-11-02 19:57:17,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:57:17,303 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:57:17,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:57:17,304 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:57:17,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-02 19:57:18,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:57:18,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 19:57:18,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:57:18,320 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:57:18,320 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:57:18,321 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:57:18,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [660442860] [2022-11-02 19:57:18,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [660442860] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:57:18,321 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:57:18,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 19:57:18,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614417785] [2022-11-02 19:57:18,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:57:18,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:57:18,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:57:18,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:57:18,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:57:18,323 INFO L87 Difference]: Start difference. First operand 269 states and 367 transitions. Second operand has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:19,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:57:19,448 INFO L93 Difference]: Finished difference Result 953 states and 1324 transitions. [2022-11-02 19:57:19,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 19:57:19,449 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2022-11-02 19:57:19,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:57:19,450 INFO L225 Difference]: With dead ends: 953 [2022-11-02 19:57:19,451 INFO L226 Difference]: Without dead ends: 710 [2022-11-02 19:57:19,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-02 19:57:19,451 INFO L413 NwaCegarLoop]: 300 mSDtfsCounter, 2184 mSDsluCounter, 1463 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2184 SdHoareTripleChecker+Valid, 1763 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:57:19,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2184 Valid, 1763 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 690 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-02 19:57:19,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2022-11-02 19:57:19,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 271. [2022-11-02 19:57:19,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 270 states have (on average 1.3666666666666667) internal successors, (369), 270 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:19,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 369 transitions. [2022-11-02 19:57:19,462 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 369 transitions. Word has length 222 [2022-11-02 19:57:19,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:57:19,463 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 369 transitions. [2022-11-02 19:57:19,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:19,463 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 369 transitions. [2022-11-02 19:57:19,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-02 19:57:19,465 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:57:19,465 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:57:19,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-11-02 19:57:19,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:57:19,689 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:57:19,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:57:19,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1103815827, now seen corresponding path program 1 times [2022-11-02 19:57:19,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:57:19,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1098222879] [2022-11-02 19:57:19,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:57:19,691 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:57:19,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:57:19,692 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:57:19,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-02 19:57:20,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:57:20,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 19:57:20,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:57:20,705 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:57:20,705 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:57:20,705 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:57:20,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1098222879] [2022-11-02 19:57:20,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1098222879] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:57:20,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:57:20,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 19:57:20,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119485491] [2022-11-02 19:57:20,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:57:20,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:57:20,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:57:20,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:57:20,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:57:20,707 INFO L87 Difference]: Start difference. First operand 271 states and 369 transitions. Second operand has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:21,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:57:21,894 INFO L93 Difference]: Finished difference Result 961 states and 1333 transitions. [2022-11-02 19:57:21,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 19:57:21,895 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2022-11-02 19:57:21,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:57:21,898 INFO L225 Difference]: With dead ends: 961 [2022-11-02 19:57:21,898 INFO L226 Difference]: Without dead ends: 716 [2022-11-02 19:57:21,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-02 19:57:21,900 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 2178 mSDsluCounter, 1468 mSDsCounter, 0 mSdLazyCounter, 695 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2178 SdHoareTripleChecker+Valid, 1771 SdHoareTripleChecker+Invalid, 705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:57:21,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2178 Valid, 1771 Invalid, 705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 695 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-02 19:57:21,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2022-11-02 19:57:21,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 273. [2022-11-02 19:57:21,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 272 states have (on average 1.3639705882352942) internal successors, (371), 272 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:21,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 371 transitions. [2022-11-02 19:57:21,913 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 371 transitions. Word has length 222 [2022-11-02 19:57:21,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:57:21,914 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 371 transitions. [2022-11-02 19:57:21,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:21,914 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 371 transitions. [2022-11-02 19:57:21,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-02 19:57:21,916 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:57:21,916 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:57:21,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-11-02 19:57:22,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:57:22,143 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:57:22,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:57:22,144 INFO L85 PathProgramCache]: Analyzing trace with hash -758987665, now seen corresponding path program 1 times [2022-11-02 19:57:22,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:57:22,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1492846895] [2022-11-02 19:57:22,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:57:22,146 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:57:22,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:57:22,147 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:57:22,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-02 19:57:23,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:57:23,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 19:57:23,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:57:23,379 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:57:23,380 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:57:23,380 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:57:23,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1492846895] [2022-11-02 19:57:23,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1492846895] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:57:23,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:57:23,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 19:57:23,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580041478] [2022-11-02 19:57:23,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:57:23,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:57:23,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:57:23,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:57:23,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:57:23,382 INFO L87 Difference]: Start difference. First operand 273 states and 371 transitions. Second operand has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:24,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:57:24,776 INFO L93 Difference]: Finished difference Result 969 states and 1341 transitions. [2022-11-02 19:57:24,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 19:57:24,776 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2022-11-02 19:57:24,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:57:24,778 INFO L225 Difference]: With dead ends: 969 [2022-11-02 19:57:24,778 INFO L226 Difference]: Without dead ends: 722 [2022-11-02 19:57:24,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-02 19:57:24,780 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 2173 mSDsluCounter, 1472 mSDsCounter, 0 mSdLazyCounter, 700 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2173 SdHoareTripleChecker+Valid, 1778 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-02 19:57:24,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2173 Valid, 1778 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 700 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-02 19:57:24,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2022-11-02 19:57:24,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 275. [2022-11-02 19:57:24,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 274 states have (on average 1.3613138686131387) internal successors, (373), 274 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:24,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 373 transitions. [2022-11-02 19:57:24,790 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 373 transitions. Word has length 222 [2022-11-02 19:57:24,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:57:24,790 INFO L495 AbstractCegarLoop]: Abstraction has 275 states and 373 transitions. [2022-11-02 19:57:24,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:24,790 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 373 transitions. [2022-11-02 19:57:24,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-02 19:57:24,792 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:57:24,792 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:57:24,819 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-11-02 19:57:25,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:57:25,006 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:57:25,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:57:25,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1766508017, now seen corresponding path program 1 times [2022-11-02 19:57:25,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:57:25,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1071918511] [2022-11-02 19:57:25,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:57:25,009 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:57:25,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:57:25,010 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:57:25,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-02 19:57:25,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:57:25,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 19:57:25,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:57:26,281 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:57:26,281 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:57:26,281 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:57:26,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1071918511] [2022-11-02 19:57:26,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1071918511] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:57:26,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:57:26,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 19:57:26,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184849295] [2022-11-02 19:57:26,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:57:26,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:57:26,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:57:26,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:57:26,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:57:26,284 INFO L87 Difference]: Start difference. First operand 275 states and 373 transitions. Second operand has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:27,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:57:27,656 INFO L93 Difference]: Finished difference Result 977 states and 1349 transitions. [2022-11-02 19:57:27,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 19:57:27,657 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2022-11-02 19:57:27,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:57:27,659 INFO L225 Difference]: With dead ends: 977 [2022-11-02 19:57:27,659 INFO L226 Difference]: Without dead ends: 728 [2022-11-02 19:57:27,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-02 19:57:27,660 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 2168 mSDsluCounter, 1476 mSDsCounter, 0 mSdLazyCounter, 705 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2168 SdHoareTripleChecker+Valid, 1785 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-02 19:57:27,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2168 Valid, 1785 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 705 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-02 19:57:27,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2022-11-02 19:57:27,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 277. [2022-11-02 19:57:27,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 276 states have (on average 1.358695652173913) internal successors, (375), 276 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 19:57:27,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 375 transitions. [2022-11-02 19:57:27,673 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 375 transitions. Word has length 222 [2022-11-02 19:57:27,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:57:27,674 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 375 transitions. [2022-11-02 19:57:27,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:27,674 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 375 transitions. [2022-11-02 19:57:27,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-02 19:57:27,676 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:57:27,676 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:57:27,703 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (31)] Ended with exit code 0 [2022-11-02 19:57:27,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:57:27,889 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:57:27,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:57:27,889 INFO L85 PathProgramCache]: Analyzing trace with hash 361316339, now seen corresponding path program 1 times [2022-11-02 19:57:27,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:57:27,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2143007680] [2022-11-02 19:57:27,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:57:27,891 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:57:27,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:57:27,892 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:57:27,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-02 19:57:28,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:57:28,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 19:57:28,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:57:29,175 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:57:29,175 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:57:29,175 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:57:29,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2143007680] [2022-11-02 19:57:29,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2143007680] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:57:29,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:57:29,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 19:57:29,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272344785] [2022-11-02 19:57:29,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:57:29,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:57:29,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:57:29,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:57:29,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:57:29,178 INFO L87 Difference]: Start difference. First operand 277 states and 375 transitions. Second operand has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:30,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:57:30,563 INFO L93 Difference]: Finished difference Result 991 states and 1365 transitions. [2022-11-02 19:57:30,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 19:57:30,564 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2022-11-02 19:57:30,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:57:30,566 INFO L225 Difference]: With dead ends: 991 [2022-11-02 19:57:30,566 INFO L226 Difference]: Without dead ends: 740 [2022-11-02 19:57:30,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-02 19:57:30,567 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 2162 mSDsluCounter, 1485 mSDsCounter, 0 mSdLazyCounter, 715 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2162 SdHoareTripleChecker+Valid, 1801 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-02 19:57:30,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2162 Valid, 1801 Invalid, 725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 715 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-02 19:57:30,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2022-11-02 19:57:30,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 281. [2022-11-02 19:57:30,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 280 states have (on average 1.3571428571428572) internal successors, (380), 280 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:30,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 380 transitions. [2022-11-02 19:57:30,577 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 380 transitions. Word has length 222 [2022-11-02 19:57:30,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:57:30,578 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 380 transitions. [2022-11-02 19:57:30,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:30,578 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 380 transitions. [2022-11-02 19:57:30,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-02 19:57:30,580 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:57:30,580 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:57:30,611 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-11-02 19:57:30,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:57:30,796 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:57:30,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:57:30,797 INFO L85 PathProgramCache]: Analyzing trace with hash 747178741, now seen corresponding path program 1 times [2022-11-02 19:57:30,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:57:30,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [785887769] [2022-11-02 19:57:30,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:57:30,800 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:57:30,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:57:30,801 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:57:30,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-11-02 19:57:31,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:57:31,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 19:57:31,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:57:32,146 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:57:32,146 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:57:32,146 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:57:32,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [785887769] [2022-11-02 19:57:32,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [785887769] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:57:32,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:57:32,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 19:57:32,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213249703] [2022-11-02 19:57:32,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:57:32,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 19:57:32,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:57:32,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 19:57:32,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:57:32,149 INFO L87 Difference]: Start difference. First operand 281 states and 380 transitions. Second operand has 7 states, 7 states have (on average 31.714285714285715) internal successors, (222), 7 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:33,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:57:33,269 INFO L93 Difference]: Finished difference Result 949 states and 1309 transitions. [2022-11-02 19:57:33,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 19:57:33,271 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 31.714285714285715) internal successors, (222), 7 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2022-11-02 19:57:33,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:57:33,273 INFO L225 Difference]: With dead ends: 949 [2022-11-02 19:57:33,273 INFO L226 Difference]: Without dead ends: 694 [2022-11-02 19:57:33,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-11-02 19:57:33,275 INFO L413 NwaCegarLoop]: 319 mSDtfsCounter, 1834 mSDsluCounter, 1022 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1834 SdHoareTripleChecker+Valid, 1341 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:57:33,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1834 Valid, 1341 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 539 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-02 19:57:33,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2022-11-02 19:57:33,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 283. [2022-11-02 19:57:33,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 282 states have (on average 1.3546099290780143) internal successors, (382), 282 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:33,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 382 transitions. [2022-11-02 19:57:33,285 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 382 transitions. Word has length 222 [2022-11-02 19:57:33,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:57:33,286 INFO L495 AbstractCegarLoop]: Abstraction has 283 states and 382 transitions. [2022-11-02 19:57:33,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 31.714285714285715) internal successors, (222), 7 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:33,286 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 382 transitions. [2022-11-02 19:57:33,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-02 19:57:33,288 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:57:33,288 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:57:33,314 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-11-02 19:57:33,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:57:33,498 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:57:33,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:57:33,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1616662921, now seen corresponding path program 1 times [2022-11-02 19:57:33,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:57:33,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [34899271] [2022-11-02 19:57:33,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:57:33,501 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:57:33,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:57:33,502 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:57:33,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-02 19:57:34,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:57:34,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 19:57:34,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:57:34,885 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:57:34,885 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:57:34,886 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:57:34,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [34899271] [2022-11-02 19:57:34,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [34899271] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:57:34,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:57:34,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 19:57:34,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828843132] [2022-11-02 19:57:34,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:57:34,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:57:34,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:57:34,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:57:34,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:57:34,888 INFO L87 Difference]: Start difference. First operand 283 states and 382 transitions. Second operand has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:36,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:57:36,262 INFO L93 Difference]: Finished difference Result 961 states and 1323 transitions. [2022-11-02 19:57:36,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 19:57:36,263 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2022-11-02 19:57:36,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:57:36,264 INFO L225 Difference]: With dead ends: 961 [2022-11-02 19:57:36,264 INFO L226 Difference]: Without dead ends: 704 [2022-11-02 19:57:36,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-02 19:57:36,266 INFO L413 NwaCegarLoop]: 322 mSDtfsCounter, 2105 mSDsluCounter, 1480 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2105 SdHoareTripleChecker+Valid, 1802 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-02 19:57:36,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2105 Valid, 1802 Invalid, 723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 713 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-02 19:57:36,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2022-11-02 19:57:36,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 285. [2022-11-02 19:57:36,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 284 states have (on average 1.352112676056338) internal successors, (384), 284 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:36,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 384 transitions. [2022-11-02 19:57:36,276 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 384 transitions. Word has length 222 [2022-11-02 19:57:36,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:57:36,277 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 384 transitions. [2022-11-02 19:57:36,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:36,277 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 384 transitions. [2022-11-02 19:57:36,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-02 19:57:36,278 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:57:36,278 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:57:36,306 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2022-11-02 19:57:36,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:57:36,479 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:57:36,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:57:36,479 INFO L85 PathProgramCache]: Analyzing trace with hash 280316537, now seen corresponding path program 1 times [2022-11-02 19:57:36,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:57:36,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [613562032] [2022-11-02 19:57:36,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:57:36,481 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:57:36,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:57:36,482 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:57:36,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-11-02 19:57:37,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:57:37,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 19:57:37,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:57:37,774 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:57:37,775 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:57:37,775 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:57:37,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [613562032] [2022-11-02 19:57:37,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [613562032] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:57:37,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:57:37,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 19:57:37,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217888733] [2022-11-02 19:57:37,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:57:37,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:57:37,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:57:37,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:57:37,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:57:37,778 INFO L87 Difference]: Start difference. First operand 285 states and 384 transitions. Second operand has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:39,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:57:39,175 INFO L93 Difference]: Finished difference Result 969 states and 1331 transitions. [2022-11-02 19:57:39,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 19:57:39,175 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2022-11-02 19:57:39,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:57:39,180 INFO L225 Difference]: With dead ends: 969 [2022-11-02 19:57:39,180 INFO L226 Difference]: Without dead ends: 710 [2022-11-02 19:57:39,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-02 19:57:39,183 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 2100 mSDsluCounter, 1484 mSDsCounter, 0 mSdLazyCounter, 718 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2100 SdHoareTripleChecker+Valid, 1809 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-02 19:57:39,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2100 Valid, 1809 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 718 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-02 19:57:39,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2022-11-02 19:57:39,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 287. [2022-11-02 19:57:39,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 1.3496503496503496) internal successors, (386), 286 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:39,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 386 transitions. [2022-11-02 19:57:39,197 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 386 transitions. Word has length 222 [2022-11-02 19:57:39,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:57:39,197 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 386 transitions. [2022-11-02 19:57:39,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:39,198 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 386 transitions. [2022-11-02 19:57:39,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-02 19:57:39,199 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:57:39,200 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:57:39,237 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2022-11-02 19:57:39,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:57:39,425 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:57:39,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:57:39,425 INFO L85 PathProgramCache]: Analyzing trace with hash 706871035, now seen corresponding path program 1 times [2022-11-02 19:57:39,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:57:39,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1988217239] [2022-11-02 19:57:39,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:57:39,427 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:57:39,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:57:39,429 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:57:39,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-11-02 19:57:40,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:57:40,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 19:57:40,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:57:40,733 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:57:40,733 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:57:40,733 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:57:40,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1988217239] [2022-11-02 19:57:40,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1988217239] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:57:40,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:57:40,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 19:57:40,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030014566] [2022-11-02 19:57:40,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:57:40,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:57:40,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:57:40,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:57:40,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:57:40,736 INFO L87 Difference]: Start difference. First operand 287 states and 386 transitions. Second operand has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:42,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:57:42,138 INFO L93 Difference]: Finished difference Result 977 states and 1339 transitions. [2022-11-02 19:57:42,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 19:57:42,139 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2022-11-02 19:57:42,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:57:42,141 INFO L225 Difference]: With dead ends: 977 [2022-11-02 19:57:42,141 INFO L226 Difference]: Without dead ends: 716 [2022-11-02 19:57:42,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-02 19:57:42,142 INFO L413 NwaCegarLoop]: 328 mSDtfsCounter, 2095 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2095 SdHoareTripleChecker+Valid, 1816 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-02 19:57:42,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2095 Valid, 1816 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 723 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-02 19:57:42,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2022-11-02 19:57:42,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 289. [2022-11-02 19:57:42,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 288 states have (on average 1.3472222222222223) internal successors, (388), 288 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:42,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 388 transitions. [2022-11-02 19:57:42,155 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 388 transitions. Word has length 222 [2022-11-02 19:57:42,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:57:42,156 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 388 transitions. [2022-11-02 19:57:42,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:42,156 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 388 transitions. [2022-11-02 19:57:42,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-02 19:57:42,158 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:57:42,162 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:57:42,193 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2022-11-02 19:57:42,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:57:42,377 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:57:42,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:57:42,377 INFO L85 PathProgramCache]: Analyzing trace with hash 550890493, now seen corresponding path program 1 times [2022-11-02 19:57:42,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:57:42,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1089942676] [2022-11-02 19:57:42,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:57:42,379 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:57:42,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:57:42,380 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:57:42,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-11-02 19:57:43,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:57:43,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 19:57:43,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:57:43,682 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:57:43,682 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:57:43,683 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:57:43,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1089942676] [2022-11-02 19:57:43,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1089942676] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:57:43,683 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:57:43,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 19:57:43,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060610289] [2022-11-02 19:57:43,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:57:43,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:57:43,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:57:43,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:57:43,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:57:43,686 INFO L87 Difference]: Start difference. First operand 289 states and 388 transitions. Second operand has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:45,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:57:45,154 INFO L93 Difference]: Finished difference Result 985 states and 1347 transitions. [2022-11-02 19:57:45,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 19:57:45,155 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2022-11-02 19:57:45,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:57:45,160 INFO L225 Difference]: With dead ends: 985 [2022-11-02 19:57:45,160 INFO L226 Difference]: Without dead ends: 722 [2022-11-02 19:57:45,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-02 19:57:45,161 INFO L413 NwaCegarLoop]: 331 mSDtfsCounter, 2090 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 728 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2090 SdHoareTripleChecker+Valid, 1823 SdHoareTripleChecker+Invalid, 738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-02 19:57:45,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2090 Valid, 1823 Invalid, 738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 728 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-02 19:57:45,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2022-11-02 19:57:45,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 291. [2022-11-02 19:57:45,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 290 states have (on average 1.3448275862068966) internal successors, (390), 290 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:45,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 390 transitions. [2022-11-02 19:57:45,170 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 390 transitions. Word has length 222 [2022-11-02 19:57:45,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:57:45,171 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 390 transitions. [2022-11-02 19:57:45,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:45,171 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 390 transitions. [2022-11-02 19:57:45,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-02 19:57:45,173 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:57:45,173 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:57:45,205 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (37)] Ended with exit code 0 [2022-11-02 19:57:45,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:57:45,393 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:57:45,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:57:45,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1236979329, now seen corresponding path program 1 times [2022-11-02 19:57:45,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:57:45,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1320939342] [2022-11-02 19:57:45,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:57:45,396 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:57:45,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:57:45,397 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:57:45,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-11-02 19:57:46,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:57:46,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 19:57:46,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:57:46,735 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:57:46,735 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:57:46,735 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:57:46,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1320939342] [2022-11-02 19:57:46,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1320939342] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:57:46,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:57:46,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 19:57:46,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451482797] [2022-11-02 19:57:46,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:57:46,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:57:46,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:57:46,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:57:46,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:57:46,738 INFO L87 Difference]: Start difference. First operand 291 states and 390 transitions. Second operand has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:48,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:57:48,181 INFO L93 Difference]: Finished difference Result 999 states and 1363 transitions. [2022-11-02 19:57:48,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 19:57:48,182 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2022-11-02 19:57:48,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:57:48,184 INFO L225 Difference]: With dead ends: 999 [2022-11-02 19:57:48,184 INFO L226 Difference]: Without dead ends: 734 [2022-11-02 19:57:48,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-02 19:57:48,185 INFO L413 NwaCegarLoop]: 338 mSDtfsCounter, 2084 mSDsluCounter, 1501 mSDsCounter, 0 mSdLazyCounter, 738 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2084 SdHoareTripleChecker+Valid, 1839 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-02 19:57:48,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2084 Valid, 1839 Invalid, 748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 738 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-02 19:57:48,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2022-11-02 19:57:48,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 295. [2022-11-02 19:57:48,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 294 states have (on average 1.3435374149659864) internal successors, (395), 294 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:48,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 395 transitions. [2022-11-02 19:57:48,198 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 395 transitions. Word has length 222 [2022-11-02 19:57:48,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:57:48,198 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 395 transitions. [2022-11-02 19:57:48,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:48,199 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 395 transitions. [2022-11-02 19:57:48,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-02 19:57:48,200 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:57:48,201 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:57:48,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2022-11-02 19:57:48,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:57:48,425 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:57:48,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:57:48,426 INFO L85 PathProgramCache]: Analyzing trace with hash 161974273, now seen corresponding path program 1 times [2022-11-02 19:57:48,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:57:48,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [499314912] [2022-11-02 19:57:48,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:57:48,428 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:57:48,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:57:48,430 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:57:48,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-11-02 19:57:49,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:57:49,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 19:57:49,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:57:49,857 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:57:49,858 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:57:49,858 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:57:49,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [499314912] [2022-11-02 19:57:49,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [499314912] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:57:49,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:57:49,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 19:57:49,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400740131] [2022-11-02 19:57:49,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:57:49,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:57:49,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:57:49,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:57:49,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:57:49,861 INFO L87 Difference]: Start difference. First operand 295 states and 395 transitions. Second operand has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:51,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:57:51,351 INFO L93 Difference]: Finished difference Result 1009 states and 1375 transitions. [2022-11-02 19:57:51,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 19:57:51,352 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2022-11-02 19:57:51,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:57:51,357 INFO L225 Difference]: With dead ends: 1009 [2022-11-02 19:57:51,357 INFO L226 Difference]: Without dead ends: 740 [2022-11-02 19:57:51,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-02 19:57:51,358 INFO L413 NwaCegarLoop]: 341 mSDtfsCounter, 2078 mSDsluCounter, 1506 mSDsCounter, 0 mSdLazyCounter, 743 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2078 SdHoareTripleChecker+Valid, 1847 SdHoareTripleChecker+Invalid, 753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-02 19:57:51,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2078 Valid, 1847 Invalid, 753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 743 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-02 19:57:51,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2022-11-02 19:57:51,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 297. [2022-11-02 19:57:51,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 296 states have (on average 1.3412162162162162) internal successors, (397), 296 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:51,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 397 transitions. [2022-11-02 19:57:51,367 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 397 transitions. Word has length 222 [2022-11-02 19:57:51,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:57:51,368 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 397 transitions. [2022-11-02 19:57:51,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:51,368 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 397 transitions. [2022-11-02 19:57:51,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-02 19:57:51,370 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:57:51,370 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:57:51,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2022-11-02 19:57:51,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:57:51,585 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:57:51,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:57:51,586 INFO L85 PathProgramCache]: Analyzing trace with hash 525440771, now seen corresponding path program 1 times [2022-11-02 19:57:51,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:57:51,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1617681775] [2022-11-02 19:57:51,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:57:51,589 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:57:51,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:57:51,591 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:57:51,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-11-02 19:57:52,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:57:52,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 19:57:52,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:57:53,001 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:57:53,002 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:57:53,002 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:57:53,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1617681775] [2022-11-02 19:57:53,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1617681775] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:57:53,002 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:57:53,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 19:57:53,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366156713] [2022-11-02 19:57:53,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:57:53,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:57:53,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:57:53,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:57:53,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:57:53,004 INFO L87 Difference]: Start difference. First operand 297 states and 397 transitions. Second operand has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:54,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:57:54,529 INFO L93 Difference]: Finished difference Result 1017 states and 1383 transitions. [2022-11-02 19:57:54,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 19:57:54,530 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2022-11-02 19:57:54,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:57:54,531 INFO L225 Difference]: With dead ends: 1017 [2022-11-02 19:57:54,532 INFO L226 Difference]: Without dead ends: 746 [2022-11-02 19:57:54,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-02 19:57:54,533 INFO L413 NwaCegarLoop]: 344 mSDtfsCounter, 2073 mSDsluCounter, 1510 mSDsCounter, 0 mSdLazyCounter, 748 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2073 SdHoareTripleChecker+Valid, 1854 SdHoareTripleChecker+Invalid, 758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-02 19:57:54,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2073 Valid, 1854 Invalid, 758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 748 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-02 19:57:54,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2022-11-02 19:57:54,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 299. [2022-11-02 19:57:54,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 298 states have (on average 1.3389261744966443) internal successors, (399), 298 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:54,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 399 transitions. [2022-11-02 19:57:54,543 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 399 transitions. Word has length 222 [2022-11-02 19:57:54,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:57:54,544 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 399 transitions. [2022-11-02 19:57:54,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:54,544 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 399 transitions. [2022-11-02 19:57:54,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-02 19:57:54,546 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:57:54,546 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:57:54,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2022-11-02 19:57:54,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:57:54,761 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:57:54,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:57:54,761 INFO L85 PathProgramCache]: Analyzing trace with hash -19431803, now seen corresponding path program 1 times [2022-11-02 19:57:54,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:57:54,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [792043897] [2022-11-02 19:57:54,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:57:54,763 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:57:54,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:57:54,765 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:57:54,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2022-11-02 19:57:55,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:57:55,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 19:57:55,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:57:56,194 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:57:56,195 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:57:56,195 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:57:56,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [792043897] [2022-11-02 19:57:56,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [792043897] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:57:56,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:57:56,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 19:57:56,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797409648] [2022-11-02 19:57:56,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:57:56,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:57:56,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:57:56,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:57:56,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:57:56,198 INFO L87 Difference]: Start difference. First operand 299 states and 399 transitions. Second operand has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:57,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:57:57,770 INFO L93 Difference]: Finished difference Result 1025 states and 1391 transitions. [2022-11-02 19:57:57,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 19:57:57,771 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2022-11-02 19:57:57,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:57:57,775 INFO L225 Difference]: With dead ends: 1025 [2022-11-02 19:57:57,775 INFO L226 Difference]: Without dead ends: 752 [2022-11-02 19:57:57,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-02 19:57:57,776 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 2068 mSDsluCounter, 1514 mSDsCounter, 0 mSdLazyCounter, 753 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2068 SdHoareTripleChecker+Valid, 1861 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-02 19:57:57,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2068 Valid, 1861 Invalid, 763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 753 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-02 19:57:57,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2022-11-02 19:57:57,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 301. [2022-11-02 19:57:57,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 300 states have (on average 1.3366666666666667) internal successors, (401), 300 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:57,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 401 transitions. [2022-11-02 19:57:57,786 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 401 transitions. Word has length 222 [2022-11-02 19:57:57,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:57:57,786 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 401 transitions. [2022-11-02 19:57:57,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:57:57,786 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 401 transitions. [2022-11-02 19:57:57,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-02 19:57:57,788 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:57:57,789 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:57:57,818 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2022-11-02 19:57:58,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:57:58,002 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:57:58,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:57:58,002 INFO L85 PathProgramCache]: Analyzing trace with hash -967483769, now seen corresponding path program 1 times [2022-11-02 19:57:58,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:57:58,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [17607735] [2022-11-02 19:57:58,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:57:58,005 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:57:58,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:57:58,007 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:57:58,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2022-11-02 19:57:58,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:57:58,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 19:57:58,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:57:59,400 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:57:59,400 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:57:59,401 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:57:59,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [17607735] [2022-11-02 19:57:59,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [17607735] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:57:59,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:57:59,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 19:57:59,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249096130] [2022-11-02 19:57:59,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:57:59,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:57:59,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:57:59,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:57:59,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:57:59,403 INFO L87 Difference]: Start difference. First operand 301 states and 401 transitions. Second operand has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:00,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:58:00,977 INFO L93 Difference]: Finished difference Result 1033 states and 1399 transitions. [2022-11-02 19:58:00,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 19:58:00,977 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2022-11-02 19:58:00,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:58:00,979 INFO L225 Difference]: With dead ends: 1033 [2022-11-02 19:58:00,979 INFO L226 Difference]: Without dead ends: 758 [2022-11-02 19:58:00,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-02 19:58:00,981 INFO L413 NwaCegarLoop]: 350 mSDtfsCounter, 2063 mSDsluCounter, 1518 mSDsCounter, 0 mSdLazyCounter, 758 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2063 SdHoareTripleChecker+Valid, 1868 SdHoareTripleChecker+Invalid, 768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-02 19:58:00,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2063 Valid, 1868 Invalid, 768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 758 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-02 19:58:00,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2022-11-02 19:58:00,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 303. [2022-11-02 19:58:00,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 302 states have (on average 1.3344370860927153) internal successors, (403), 302 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:00,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 403 transitions. [2022-11-02 19:58:00,994 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 403 transitions. Word has length 222 [2022-11-02 19:58:00,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:58:00,995 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 403 transitions. [2022-11-02 19:58:00,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:00,995 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 403 transitions. [2022-11-02 19:58:00,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-02 19:58:00,997 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:58:00,997 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:58:01,026 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (42)] Ended with exit code 0 [2022-11-02 19:58:01,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:58:01,198 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:58:01,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:58:01,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1401989367, now seen corresponding path program 1 times [2022-11-02 19:58:01,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:58:01,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [517515038] [2022-11-02 19:58:01,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:58:01,202 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:58:01,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:58:01,203 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:58:01,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2022-11-02 19:58:02,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:02,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 19:58:02,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:58:02,633 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:58:02,633 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:58:02,634 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:58:02,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [517515038] [2022-11-02 19:58:02,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [517515038] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:58:02,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:58:02,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 19:58:02,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895776352] [2022-11-02 19:58:02,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:58:02,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:58:02,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:58:02,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:58:02,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:58:02,636 INFO L87 Difference]: Start difference. First operand 303 states and 403 transitions. Second operand has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:04,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:58:04,181 INFO L93 Difference]: Finished difference Result 1041 states and 1407 transitions. [2022-11-02 19:58:04,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 19:58:04,181 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2022-11-02 19:58:04,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:58:04,184 INFO L225 Difference]: With dead ends: 1041 [2022-11-02 19:58:04,184 INFO L226 Difference]: Without dead ends: 764 [2022-11-02 19:58:04,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-02 19:58:04,185 INFO L413 NwaCegarLoop]: 353 mSDtfsCounter, 2058 mSDsluCounter, 1522 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2058 SdHoareTripleChecker+Valid, 1875 SdHoareTripleChecker+Invalid, 773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-02 19:58:04,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2058 Valid, 1875 Invalid, 773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 763 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-02 19:58:04,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2022-11-02 19:58:04,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 305. [2022-11-02 19:58:04,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 304 states have (on average 1.332236842105263) internal successors, (405), 304 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:04,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 405 transitions. [2022-11-02 19:58:04,199 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 405 transitions. Word has length 222 [2022-11-02 19:58:04,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:58:04,200 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 405 transitions. [2022-11-02 19:58:04,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:04,200 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 405 transitions. [2022-11-02 19:58:04,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-02 19:58:04,202 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:58:04,202 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:58:04,228 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (43)] Ended with exit code 0 [2022-11-02 19:58:04,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:58:04,409 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:58:04,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:58:04,410 INFO L85 PathProgramCache]: Analyzing trace with hash -2108585973, now seen corresponding path program 1 times [2022-11-02 19:58:04,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:58:04,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1801291543] [2022-11-02 19:58:04,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:58:04,412 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:58:04,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:58:04,414 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:58:04,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2022-11-02 19:58:05,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:05,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 19:58:05,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:58:05,887 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:58:05,887 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:58:05,887 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:58:05,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1801291543] [2022-11-02 19:58:05,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1801291543] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:58:05,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:58:05,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 19:58:05,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36304136] [2022-11-02 19:58:05,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:58:05,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 19:58:05,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:58:05,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 19:58:05,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:58:05,891 INFO L87 Difference]: Start difference. First operand 305 states and 405 transitions. Second operand has 7 states, 7 states have (on average 31.714285714285715) internal successors, (222), 7 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:07,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:58:07,258 INFO L93 Difference]: Finished difference Result 997 states and 1348 transitions. [2022-11-02 19:58:07,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 19:58:07,260 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 31.714285714285715) internal successors, (222), 7 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2022-11-02 19:58:07,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:58:07,263 INFO L225 Difference]: With dead ends: 997 [2022-11-02 19:58:07,263 INFO L226 Difference]: Without dead ends: 718 [2022-11-02 19:58:07,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-11-02 19:58:07,265 INFO L413 NwaCegarLoop]: 356 mSDtfsCounter, 1741 mSDsluCounter, 1059 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1741 SdHoareTripleChecker+Valid, 1415 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-02 19:58:07,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1741 Valid, 1415 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-02 19:58:07,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2022-11-02 19:58:07,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 307. [2022-11-02 19:58:07,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 306 states have (on average 1.3300653594771241) internal successors, (407), 306 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:07,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 407 transitions. [2022-11-02 19:58:07,281 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 407 transitions. Word has length 222 [2022-11-02 19:58:07,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:58:07,281 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 407 transitions. [2022-11-02 19:58:07,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 31.714285714285715) internal successors, (222), 7 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:07,282 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 407 transitions. [2022-11-02 19:58:07,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-02 19:58:07,283 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:58:07,284 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:58:07,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2022-11-02 19:58:07,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:58:07,493 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:58:07,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:58:07,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1246752371, now seen corresponding path program 1 times [2022-11-02 19:58:07,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:58:07,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1628896388] [2022-11-02 19:58:07,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:58:07,496 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:58:07,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:58:07,497 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:58:07,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2022-11-02 19:58:08,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:08,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 19:58:08,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:58:08,976 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:58:08,976 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:58:08,977 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:58:08,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1628896388] [2022-11-02 19:58:08,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1628896388] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:58:08,977 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:58:08,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 19:58:08,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045401162] [2022-11-02 19:58:08,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:58:08,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:58:08,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:58:08,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:58:08,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:58:08,979 INFO L87 Difference]: Start difference. First operand 307 states and 407 transitions. Second operand has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:10,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:58:10,475 INFO L93 Difference]: Finished difference Result 1009 states and 1362 transitions. [2022-11-02 19:58:10,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 19:58:10,476 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2022-11-02 19:58:10,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:58:10,478 INFO L225 Difference]: With dead ends: 1009 [2022-11-02 19:58:10,479 INFO L226 Difference]: Without dead ends: 728 [2022-11-02 19:58:10,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-02 19:58:10,480 INFO L413 NwaCegarLoop]: 359 mSDtfsCounter, 2001 mSDsluCounter, 1517 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2001 SdHoareTripleChecker+Valid, 1876 SdHoareTripleChecker+Invalid, 771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-02 19:58:10,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2001 Valid, 1876 Invalid, 771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 761 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-02 19:58:10,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2022-11-02 19:58:10,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 309. [2022-11-02 19:58:10,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 308 states have (on average 1.327922077922078) internal successors, (409), 308 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:10,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 409 transitions. [2022-11-02 19:58:10,495 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 409 transitions. Word has length 222 [2022-11-02 19:58:10,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:58:10,495 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 409 transitions. [2022-11-02 19:58:10,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:10,496 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 409 transitions. [2022-11-02 19:58:10,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-02 19:58:10,497 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:58:10,497 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:58:10,528 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2022-11-02 19:58:10,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:58:10,717 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:58:10,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:58:10,717 INFO L85 PathProgramCache]: Analyzing trace with hash -758705265, now seen corresponding path program 1 times [2022-11-02 19:58:10,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:58:10,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [215257330] [2022-11-02 19:58:10,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:58:10,720 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:58:10,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:58:10,721 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:58:10,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2022-11-02 19:58:11,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:11,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 19:58:11,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:58:12,118 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:58:12,118 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:58:12,119 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:58:12,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [215257330] [2022-11-02 19:58:12,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [215257330] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:58:12,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:58:12,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 19:58:12,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632016991] [2022-11-02 19:58:12,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:58:12,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:58:12,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:58:12,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:58:12,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:58:12,121 INFO L87 Difference]: Start difference. First operand 309 states and 409 transitions. Second operand has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:13,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:58:13,657 INFO L93 Difference]: Finished difference Result 1023 states and 1378 transitions. [2022-11-02 19:58:13,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 19:58:13,661 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2022-11-02 19:58:13,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:58:13,663 INFO L225 Difference]: With dead ends: 1023 [2022-11-02 19:58:13,663 INFO L226 Difference]: Without dead ends: 740 [2022-11-02 19:58:13,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-02 19:58:13,665 INFO L413 NwaCegarLoop]: 366 mSDtfsCounter, 1995 mSDsluCounter, 1526 mSDsCounter, 0 mSdLazyCounter, 771 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1995 SdHoareTripleChecker+Valid, 1892 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-02 19:58:13,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1995 Valid, 1892 Invalid, 781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 771 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-02 19:58:13,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2022-11-02 19:58:13,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 313. [2022-11-02 19:58:13,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 312 states have (on average 1.3269230769230769) internal successors, (414), 312 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:13,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 414 transitions. [2022-11-02 19:58:13,679 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 414 transitions. Word has length 222 [2022-11-02 19:58:13,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:58:13,679 INFO L495 AbstractCegarLoop]: Abstraction has 313 states and 414 transitions. [2022-11-02 19:58:13,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:13,680 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 414 transitions. [2022-11-02 19:58:13,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-02 19:58:13,681 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:58:13,682 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:58:13,709 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2022-11-02 19:58:13,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:58:13,893 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:58:13,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:58:13,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1814259345, now seen corresponding path program 1 times [2022-11-02 19:58:13,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:58:13,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [744204373] [2022-11-02 19:58:13,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:58:13,895 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:58:13,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:58:13,896 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:58:13,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2022-11-02 19:58:14,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:14,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 19:58:14,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:58:15,271 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:58:15,271 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:58:15,271 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:58:15,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [744204373] [2022-11-02 19:58:15,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [744204373] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:58:15,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:58:15,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 19:58:15,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798462827] [2022-11-02 19:58:15,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:58:15,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:58:15,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:58:15,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:58:15,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:58:15,273 INFO L87 Difference]: Start difference. First operand 313 states and 414 transitions. Second operand has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:16,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:58:16,747 INFO L93 Difference]: Finished difference Result 1033 states and 1389 transitions. [2022-11-02 19:58:16,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 19:58:16,747 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2022-11-02 19:58:16,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:58:16,749 INFO L225 Difference]: With dead ends: 1033 [2022-11-02 19:58:16,749 INFO L226 Difference]: Without dead ends: 746 [2022-11-02 19:58:16,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-02 19:58:16,750 INFO L413 NwaCegarLoop]: 369 mSDtfsCounter, 1990 mSDsluCounter, 1530 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1990 SdHoareTripleChecker+Valid, 1899 SdHoareTripleChecker+Invalid, 786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-02 19:58:16,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1990 Valid, 1899 Invalid, 786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-02 19:58:16,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2022-11-02 19:58:16,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 315. [2022-11-02 19:58:16,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 314 states have (on average 1.3248407643312101) internal successors, (416), 314 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:16,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 416 transitions. [2022-11-02 19:58:16,758 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 416 transitions. Word has length 222 [2022-11-02 19:58:16,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:58:16,758 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 416 transitions. [2022-11-02 19:58:16,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:16,758 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 416 transitions. [2022-11-02 19:58:16,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-02 19:58:16,760 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:58:16,760 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:58:16,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2022-11-02 19:58:16,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:58:16,977 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:58:16,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:58:16,977 INFO L85 PathProgramCache]: Analyzing trace with hash -551775725, now seen corresponding path program 1 times [2022-11-02 19:58:16,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:58:16,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [167654908] [2022-11-02 19:58:16,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:58:16,980 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:58:16,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:58:16,982 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:58:16,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2022-11-02 19:58:17,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:17,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 19:58:17,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:58:18,255 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:58:18,255 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:58:18,255 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:58:18,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [167654908] [2022-11-02 19:58:18,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [167654908] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:58:18,255 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:58:18,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 19:58:18,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436900130] [2022-11-02 19:58:18,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:58:18,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:58:18,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:58:18,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:58:18,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:58:18,257 INFO L87 Difference]: Start difference. First operand 315 states and 416 transitions. Second operand has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:19,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:58:19,593 INFO L93 Difference]: Finished difference Result 1041 states and 1397 transitions. [2022-11-02 19:58:19,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 19:58:19,594 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2022-11-02 19:58:19,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:58:19,595 INFO L225 Difference]: With dead ends: 1041 [2022-11-02 19:58:19,595 INFO L226 Difference]: Without dead ends: 752 [2022-11-02 19:58:19,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-02 19:58:19,596 INFO L413 NwaCegarLoop]: 372 mSDtfsCounter, 1985 mSDsluCounter, 1534 mSDsCounter, 0 mSdLazyCounter, 781 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1985 SdHoareTripleChecker+Valid, 1906 SdHoareTripleChecker+Invalid, 791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-02 19:58:19,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1985 Valid, 1906 Invalid, 791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 781 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-02 19:58:19,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2022-11-02 19:58:19,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 317. [2022-11-02 19:58:19,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 316 states have (on average 1.3227848101265822) internal successors, (418), 316 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:19,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 418 transitions. [2022-11-02 19:58:19,608 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 418 transitions. Word has length 222 [2022-11-02 19:58:19,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:58:19,609 INFO L495 AbstractCegarLoop]: Abstraction has 317 states and 418 transitions. [2022-11-02 19:58:19,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:19,609 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 418 transitions. [2022-11-02 19:58:19,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-02 19:58:19,611 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:58:19,611 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:58:19,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (48)] Forceful destruction successful, exit code 0 [2022-11-02 19:58:19,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:58:19,833 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:58:19,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:58:19,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1175369237, now seen corresponding path program 1 times [2022-11-02 19:58:19,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:58:19,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2048212810] [2022-11-02 19:58:19,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:58:19,835 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:58:19,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:58:19,836 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:58:19,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2022-11-02 19:58:20,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:20,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 19:58:20,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:58:21,035 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:58:21,035 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:58:21,035 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:58:21,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2048212810] [2022-11-02 19:58:21,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2048212810] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:58:21,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:58:21,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 19:58:21,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092175058] [2022-11-02 19:58:21,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:58:21,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:58:21,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:58:21,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:58:21,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:58:21,037 INFO L87 Difference]: Start difference. First operand 317 states and 418 transitions. Second operand has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:22,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:58:22,353 INFO L93 Difference]: Finished difference Result 1049 states and 1405 transitions. [2022-11-02 19:58:22,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 19:58:22,355 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2022-11-02 19:58:22,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:58:22,356 INFO L225 Difference]: With dead ends: 1049 [2022-11-02 19:58:22,356 INFO L226 Difference]: Without dead ends: 758 [2022-11-02 19:58:22,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-02 19:58:22,357 INFO L413 NwaCegarLoop]: 375 mSDtfsCounter, 1980 mSDsluCounter, 1538 mSDsCounter, 0 mSdLazyCounter, 786 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1980 SdHoareTripleChecker+Valid, 1913 SdHoareTripleChecker+Invalid, 796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:58:22,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1980 Valid, 1913 Invalid, 796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 786 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-02 19:58:22,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2022-11-02 19:58:22,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 319. [2022-11-02 19:58:22,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 318 states have (on average 1.320754716981132) internal successors, (420), 318 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:22,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 420 transitions. [2022-11-02 19:58:22,371 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 420 transitions. Word has length 222 [2022-11-02 19:58:22,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:58:22,372 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 420 transitions. [2022-11-02 19:58:22,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:22,372 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 420 transitions. [2022-11-02 19:58:22,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-02 19:58:22,373 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:58:22,374 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:58:22,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2022-11-02 19:58:22,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:58:22,589 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:58:22,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:58:22,589 INFO L85 PathProgramCache]: Analyzing trace with hash -471993705, now seen corresponding path program 1 times [2022-11-02 19:58:22,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:58:22,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [815305416] [2022-11-02 19:58:22,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:58:22,592 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:58:22,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:58:22,593 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:58:22,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2022-11-02 19:58:23,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:23,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 19:58:23,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:58:23,912 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:58:23,912 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:58:23,912 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:58:23,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [815305416] [2022-11-02 19:58:23,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [815305416] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:58:23,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:58:23,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 19:58:23,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340293993] [2022-11-02 19:58:23,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:58:23,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:58:23,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:58:23,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:58:23,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:58:23,914 INFO L87 Difference]: Start difference. First operand 319 states and 420 transitions. Second operand has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:25,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:58:25,314 INFO L93 Difference]: Finished difference Result 1057 states and 1414 transitions. [2022-11-02 19:58:25,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 19:58:25,315 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2022-11-02 19:58:25,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:58:25,316 INFO L225 Difference]: With dead ends: 1057 [2022-11-02 19:58:25,316 INFO L226 Difference]: Without dead ends: 764 [2022-11-02 19:58:25,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-02 19:58:25,317 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 1974 mSDsluCounter, 1543 mSDsCounter, 0 mSdLazyCounter, 791 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1974 SdHoareTripleChecker+Valid, 1921 SdHoareTripleChecker+Invalid, 801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-02 19:58:25,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1974 Valid, 1921 Invalid, 801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 791 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-02 19:58:25,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2022-11-02 19:58:25,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 321. [2022-11-02 19:58:25,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 320 states have (on average 1.31875) internal successors, (422), 320 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:25,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 422 transitions. [2022-11-02 19:58:25,328 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 422 transitions. Word has length 222 [2022-11-02 19:58:25,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:58:25,328 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 422 transitions. [2022-11-02 19:58:25,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:25,328 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 422 transitions. [2022-11-02 19:58:25,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-02 19:58:25,329 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:58:25,330 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:58:25,351 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2022-11-02 19:58:25,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:58:25,533 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:58:25,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:58:25,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1510578279, now seen corresponding path program 1 times [2022-11-02 19:58:25,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:58:25,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [690811090] [2022-11-02 19:58:25,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:58:25,536 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:58:25,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:58:25,537 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:58:25,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2022-11-02 19:58:26,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:26,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 19:58:26,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:58:26,839 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:58:26,839 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:58:26,840 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:58:26,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [690811090] [2022-11-02 19:58:26,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [690811090] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:58:26,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:58:26,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 19:58:26,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252739690] [2022-11-02 19:58:26,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:58:26,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:58:26,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:58:26,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:58:26,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:58:26,842 INFO L87 Difference]: Start difference. First operand 321 states and 422 transitions. Second operand has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:28,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:58:28,210 INFO L93 Difference]: Finished difference Result 1065 states and 1422 transitions. [2022-11-02 19:58:28,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 19:58:28,211 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2022-11-02 19:58:28,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:58:28,212 INFO L225 Difference]: With dead ends: 1065 [2022-11-02 19:58:28,212 INFO L226 Difference]: Without dead ends: 770 [2022-11-02 19:58:28,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-02 19:58:28,213 INFO L413 NwaCegarLoop]: 381 mSDtfsCounter, 1969 mSDsluCounter, 1547 mSDsCounter, 0 mSdLazyCounter, 796 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1969 SdHoareTripleChecker+Valid, 1928 SdHoareTripleChecker+Invalid, 806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-02 19:58:28,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1969 Valid, 1928 Invalid, 806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 796 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-02 19:58:28,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states. [2022-11-02 19:58:28,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 323. [2022-11-02 19:58:28,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 322 states have (on average 1.3167701863354038) internal successors, (424), 322 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:28,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 424 transitions. [2022-11-02 19:58:28,227 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 424 transitions. Word has length 222 [2022-11-02 19:58:28,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:58:28,228 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 424 transitions. [2022-11-02 19:58:28,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:28,228 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 424 transitions. [2022-11-02 19:58:28,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-02 19:58:28,229 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:58:28,230 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:58:28,263 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (51)] Ended with exit code 0 [2022-11-02 19:58:28,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:58:28,449 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:58:28,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:58:28,449 INFO L85 PathProgramCache]: Analyzing trace with hash 642528539, now seen corresponding path program 1 times [2022-11-02 19:58:28,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:58:28,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [704776828] [2022-11-02 19:58:28,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:58:28,451 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:58:28,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:58:28,452 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:58:28,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2022-11-02 19:58:29,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:29,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 19:58:29,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:58:29,689 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:58:29,690 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:58:29,690 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:58:29,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [704776828] [2022-11-02 19:58:29,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [704776828] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:58:29,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:58:29,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 19:58:29,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547690822] [2022-11-02 19:58:29,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:58:29,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:58:29,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:58:29,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:58:29,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:58:29,692 INFO L87 Difference]: Start difference. First operand 323 states and 424 transitions. Second operand has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:31,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:58:31,132 INFO L93 Difference]: Finished difference Result 1079 states and 1438 transitions. [2022-11-02 19:58:31,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 19:58:31,133 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2022-11-02 19:58:31,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:58:31,135 INFO L225 Difference]: With dead ends: 1079 [2022-11-02 19:58:31,135 INFO L226 Difference]: Without dead ends: 782 [2022-11-02 19:58:31,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-02 19:58:31,136 INFO L413 NwaCegarLoop]: 388 mSDtfsCounter, 1963 mSDsluCounter, 1556 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1963 SdHoareTripleChecker+Valid, 1944 SdHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-02 19:58:31,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1963 Valid, 1944 Invalid, 816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 806 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-02 19:58:31,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2022-11-02 19:58:31,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 327. [2022-11-02 19:58:31,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 326 states have (on average 1.3159509202453987) internal successors, (429), 326 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:31,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 429 transitions. [2022-11-02 19:58:31,145 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 429 transitions. Word has length 222 [2022-11-02 19:58:31,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:58:31,146 INFO L495 AbstractCegarLoop]: Abstraction has 327 states and 429 transitions. [2022-11-02 19:58:31,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:31,146 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 429 transitions. [2022-11-02 19:58:31,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-02 19:58:31,147 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:58:31,148 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:58:31,170 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (52)] Ended with exit code 0 [2022-11-02 19:58:31,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:58:31,355 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:58:31,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:58:31,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1390865507, now seen corresponding path program 1 times [2022-11-02 19:58:31,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:58:31,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1920099431] [2022-11-02 19:58:31,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:58:31,357 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:58:31,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:58:31,358 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:58:31,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2022-11-02 19:58:32,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:32,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 19:58:32,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:58:32,596 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:58:32,596 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:58:32,596 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:58:32,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1920099431] [2022-11-02 19:58:32,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1920099431] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:58:32,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:58:32,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 19:58:32,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953120029] [2022-11-02 19:58:32,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:58:32,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:58:32,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:58:32,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:58:32,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:58:32,598 INFO L87 Difference]: Start difference. First operand 327 states and 429 transitions. Second operand has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:33,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:58:33,925 INFO L93 Difference]: Finished difference Result 1089 states and 1449 transitions. [2022-11-02 19:58:33,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 19:58:33,925 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2022-11-02 19:58:33,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:58:33,927 INFO L225 Difference]: With dead ends: 1089 [2022-11-02 19:58:33,927 INFO L226 Difference]: Without dead ends: 788 [2022-11-02 19:58:33,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-02 19:58:33,928 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 1958 mSDsluCounter, 1560 mSDsCounter, 0 mSdLazyCounter, 811 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1958 SdHoareTripleChecker+Valid, 1951 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-02 19:58:33,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1958 Valid, 1951 Invalid, 821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 811 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-02 19:58:33,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2022-11-02 19:58:33,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 329. [2022-11-02 19:58:33,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 328 states have (on average 1.3140243902439024) internal successors, (431), 328 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:33,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 431 transitions. [2022-11-02 19:58:33,938 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 431 transitions. Word has length 222 [2022-11-02 19:58:33,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:58:33,938 INFO L495 AbstractCegarLoop]: Abstraction has 329 states and 431 transitions. [2022-11-02 19:58:33,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:33,938 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 431 transitions. [2022-11-02 19:58:33,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-02 19:58:33,939 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:58:33,939 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:58:33,961 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (53)] Ended with exit code 0 [2022-11-02 19:58:34,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:58:34,145 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:58:34,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:58:34,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1596959391, now seen corresponding path program 1 times [2022-11-02 19:58:34,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:58:34,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [478673114] [2022-11-02 19:58:34,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:58:34,148 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:58:34,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:58:34,149 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:58:34,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2022-11-02 19:58:34,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:34,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 19:58:34,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:58:35,308 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:58:35,308 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:58:35,309 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:58:35,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [478673114] [2022-11-02 19:58:35,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [478673114] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:58:35,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:58:35,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 19:58:35,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120187780] [2022-11-02 19:58:35,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:58:35,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 19:58:35,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:58:35,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 19:58:35,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:58:35,310 INFO L87 Difference]: Start difference. First operand 329 states and 431 transitions. Second operand has 7 states, 7 states have (on average 31.714285714285715) internal successors, (222), 7 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:36,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:58:36,406 INFO L93 Difference]: Finished difference Result 1045 states and 1390 transitions. [2022-11-02 19:58:36,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 19:58:36,407 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 31.714285714285715) internal successors, (222), 7 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2022-11-02 19:58:36,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:58:36,409 INFO L225 Difference]: With dead ends: 1045 [2022-11-02 19:58:36,409 INFO L226 Difference]: Without dead ends: 742 [2022-11-02 19:58:36,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-11-02 19:58:36,409 INFO L413 NwaCegarLoop]: 394 mSDtfsCounter, 1651 mSDsluCounter, 1097 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1651 SdHoareTripleChecker+Valid, 1491 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:58:36,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1651 Valid, 1491 Invalid, 642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 635 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-02 19:58:36,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2022-11-02 19:58:36,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 331. [2022-11-02 19:58:36,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 330 states have (on average 1.312121212121212) internal successors, (433), 330 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:36,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 433 transitions. [2022-11-02 19:58:36,421 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 433 transitions. Word has length 222 [2022-11-02 19:58:36,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:58:36,421 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 433 transitions. [2022-11-02 19:58:36,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 31.714285714285715) internal successors, (222), 7 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:36,422 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 433 transitions. [2022-11-02 19:58:36,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-02 19:58:36,423 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:58:36,423 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:58:36,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (54)] Forceful destruction successful, exit code 0 [2022-11-02 19:58:36,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:58:36,637 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:58:36,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:58:36,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1666967007, now seen corresponding path program 1 times [2022-11-02 19:58:36,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:58:36,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1150919140] [2022-11-02 19:58:36,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:58:36,639 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:58:36,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:58:36,640 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:58:36,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2022-11-02 19:58:37,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:37,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 19:58:37,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:58:37,869 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:58:37,869 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:58:37,870 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:58:37,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1150919140] [2022-11-02 19:58:37,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1150919140] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:58:37,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:58:37,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 19:58:37,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913011329] [2022-11-02 19:58:37,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:58:37,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:58:37,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:58:37,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:58:37,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:58:37,872 INFO L87 Difference]: Start difference. First operand 331 states and 433 transitions. Second operand has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:39,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:58:39,072 INFO L93 Difference]: Finished difference Result 1057 states and 1404 transitions. [2022-11-02 19:58:39,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 19:58:39,072 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2022-11-02 19:58:39,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:58:39,074 INFO L225 Difference]: With dead ends: 1057 [2022-11-02 19:58:39,074 INFO L226 Difference]: Without dead ends: 752 [2022-11-02 19:58:39,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-02 19:58:39,074 INFO L413 NwaCegarLoop]: 397 mSDtfsCounter, 1901 mSDsluCounter, 1555 mSDsCounter, 0 mSdLazyCounter, 809 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1901 SdHoareTripleChecker+Valid, 1952 SdHoareTripleChecker+Invalid, 819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:58:39,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1901 Valid, 1952 Invalid, 819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 809 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-02 19:58:39,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2022-11-02 19:58:39,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 333. [2022-11-02 19:58:39,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 332 states have (on average 1.3102409638554218) internal successors, (435), 332 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:39,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 435 transitions. [2022-11-02 19:58:39,082 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 435 transitions. Word has length 222 [2022-11-02 19:58:39,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:58:39,082 INFO L495 AbstractCegarLoop]: Abstraction has 333 states and 435 transitions. [2022-11-02 19:58:39,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:39,082 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 435 transitions. [2022-11-02 19:58:39,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-02 19:58:39,083 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:58:39,084 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:58:39,105 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (55)] Forceful destruction successful, exit code 0 [2022-11-02 19:58:39,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:58:39,293 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:58:39,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:58:39,293 INFO L85 PathProgramCache]: Analyzing trace with hash -65895901, now seen corresponding path program 1 times [2022-11-02 19:58:39,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:58:39,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2036361046] [2022-11-02 19:58:39,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:58:39,295 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:58:39,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:58:39,296 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:58:39,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2022-11-02 19:58:39,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:40,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 19:58:40,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:58:40,453 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:58:40,454 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:58:40,454 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:58:40,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2036361046] [2022-11-02 19:58:40,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2036361046] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:58:40,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:58:40,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 19:58:40,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6117083] [2022-11-02 19:58:40,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:58:40,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:58:40,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:58:40,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:58:40,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:58:40,456 INFO L87 Difference]: Start difference. First operand 333 states and 435 transitions. Second operand has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:41,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:58:41,666 INFO L93 Difference]: Finished difference Result 1065 states and 1412 transitions. [2022-11-02 19:58:41,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 19:58:41,667 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2022-11-02 19:58:41,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:58:41,668 INFO L225 Difference]: With dead ends: 1065 [2022-11-02 19:58:41,668 INFO L226 Difference]: Without dead ends: 758 [2022-11-02 19:58:41,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-02 19:58:41,669 INFO L413 NwaCegarLoop]: 400 mSDtfsCounter, 1896 mSDsluCounter, 1559 mSDsCounter, 0 mSdLazyCounter, 814 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1896 SdHoareTripleChecker+Valid, 1959 SdHoareTripleChecker+Invalid, 824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:58:41,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1896 Valid, 1959 Invalid, 824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 814 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-02 19:58:41,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2022-11-02 19:58:41,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 335. [2022-11-02 19:58:41,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 334 states have (on average 1.3083832335329342) internal successors, (437), 334 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:41,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 437 transitions. [2022-11-02 19:58:41,676 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 437 transitions. Word has length 222 [2022-11-02 19:58:41,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:58:41,676 INFO L495 AbstractCegarLoop]: Abstraction has 335 states and 437 transitions. [2022-11-02 19:58:41,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:41,676 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 437 transitions. [2022-11-02 19:58:41,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-02 19:58:41,677 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:58:41,678 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:58:41,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (56)] Forceful destruction successful, exit code 0 [2022-11-02 19:58:41,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:58:41,893 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:58:41,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:58:41,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1285489317, now seen corresponding path program 1 times [2022-11-02 19:58:41,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:58:41,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1161102062] [2022-11-02 19:58:41,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:58:41,895 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:58:41,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:58:41,897 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:58:41,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2022-11-02 19:58:42,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:42,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 19:58:42,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:58:43,245 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:58:43,245 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:58:43,245 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:58:43,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1161102062] [2022-11-02 19:58:43,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1161102062] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:58:43,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:58:43,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 19:58:43,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093742541] [2022-11-02 19:58:43,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:58:43,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:58:43,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:58:43,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:58:43,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:58:43,248 INFO L87 Difference]: Start difference. First operand 335 states and 437 transitions. Second operand has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:44,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:58:44,456 INFO L93 Difference]: Finished difference Result 1073 states and 1420 transitions. [2022-11-02 19:58:44,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 19:58:44,457 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2022-11-02 19:58:44,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:58:44,458 INFO L225 Difference]: With dead ends: 1073 [2022-11-02 19:58:44,458 INFO L226 Difference]: Without dead ends: 764 [2022-11-02 19:58:44,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-02 19:58:44,459 INFO L413 NwaCegarLoop]: 403 mSDtfsCounter, 1891 mSDsluCounter, 1563 mSDsCounter, 0 mSdLazyCounter, 819 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1891 SdHoareTripleChecker+Valid, 1966 SdHoareTripleChecker+Invalid, 829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:58:44,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1891 Valid, 1966 Invalid, 829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 819 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-02 19:58:44,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2022-11-02 19:58:44,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 337. [2022-11-02 19:58:44,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 336 states have (on average 1.306547619047619) internal successors, (439), 336 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:44,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 439 transitions. [2022-11-02 19:58:44,470 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 439 transitions. Word has length 222 [2022-11-02 19:58:44,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:58:44,470 INFO L495 AbstractCegarLoop]: Abstraction has 337 states and 439 transitions. [2022-11-02 19:58:44,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:44,471 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 439 transitions. [2022-11-02 19:58:44,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-02 19:58:44,472 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:58:44,472 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:58:44,493 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (57)] Ended with exit code 0 [2022-11-02 19:58:44,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:58:44,685 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:58:44,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:58:44,685 INFO L85 PathProgramCache]: Analyzing trace with hash 401980327, now seen corresponding path program 1 times [2022-11-02 19:58:44,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:58:44,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [40286935] [2022-11-02 19:58:44,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:58:44,687 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:58:44,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:58:44,688 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:58:44,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2022-11-02 19:58:45,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:45,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 19:58:45,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:58:45,848 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:58:45,848 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:58:45,848 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:58:45,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [40286935] [2022-11-02 19:58:45,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [40286935] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:58:45,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:58:45,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 19:58:45,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668195685] [2022-11-02 19:58:45,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:58:45,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:58:45,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:58:45,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:58:45,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:58:45,850 INFO L87 Difference]: Start difference. First operand 337 states and 439 transitions. Second operand has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:47,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:58:47,061 INFO L93 Difference]: Finished difference Result 1081 states and 1428 transitions. [2022-11-02 19:58:47,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 19:58:47,061 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2022-11-02 19:58:47,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:58:47,063 INFO L225 Difference]: With dead ends: 1081 [2022-11-02 19:58:47,063 INFO L226 Difference]: Without dead ends: 770 [2022-11-02 19:58:47,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-02 19:58:47,064 INFO L413 NwaCegarLoop]: 406 mSDtfsCounter, 1886 mSDsluCounter, 1567 mSDsCounter, 0 mSdLazyCounter, 824 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1886 SdHoareTripleChecker+Valid, 1973 SdHoareTripleChecker+Invalid, 834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:58:47,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1886 Valid, 1973 Invalid, 834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 824 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-02 19:58:47,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states. [2022-11-02 19:58:47,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 339. [2022-11-02 19:58:47,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 338 states have (on average 1.3047337278106508) internal successors, (441), 338 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:47,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 441 transitions. [2022-11-02 19:58:47,072 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 441 transitions. Word has length 222 [2022-11-02 19:58:47,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:58:47,073 INFO L495 AbstractCegarLoop]: Abstraction has 339 states and 441 transitions. [2022-11-02 19:58:47,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:47,073 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 441 transitions. [2022-11-02 19:58:47,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-02 19:58:47,074 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:58:47,074 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:58:47,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (58)] Forceful destruction successful, exit code 0 [2022-11-02 19:58:47,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:58:47,275 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:58:47,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:58:47,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1538601687, now seen corresponding path program 1 times [2022-11-02 19:58:47,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:58:47,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1791193991] [2022-11-02 19:58:47,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:58:47,276 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:58:47,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:58:47,277 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:58:47,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2022-11-02 19:58:47,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:48,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 19:58:48,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:58:48,441 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:58:48,441 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:58:48,441 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:58:48,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1791193991] [2022-11-02 19:58:48,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1791193991] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:58:48,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:58:48,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 19:58:48,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841193023] [2022-11-02 19:58:48,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:58:48,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:58:48,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:58:48,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:58:48,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:58:48,447 INFO L87 Difference]: Start difference. First operand 339 states and 441 transitions. Second operand has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:49,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:58:49,657 INFO L93 Difference]: Finished difference Result 1089 states and 1436 transitions. [2022-11-02 19:58:49,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 19:58:49,658 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2022-11-02 19:58:49,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:58:49,659 INFO L225 Difference]: With dead ends: 1089 [2022-11-02 19:58:49,659 INFO L226 Difference]: Without dead ends: 776 [2022-11-02 19:58:49,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-02 19:58:49,660 INFO L413 NwaCegarLoop]: 409 mSDtfsCounter, 1881 mSDsluCounter, 1571 mSDsCounter, 0 mSdLazyCounter, 829 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1881 SdHoareTripleChecker+Valid, 1980 SdHoareTripleChecker+Invalid, 839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:58:49,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1881 Valid, 1980 Invalid, 839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 829 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-02 19:58:49,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2022-11-02 19:58:49,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 341. [2022-11-02 19:58:49,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 340 states have (on average 1.3029411764705883) internal successors, (443), 340 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:49,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 443 transitions. [2022-11-02 19:58:49,672 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 443 transitions. Word has length 222 [2022-11-02 19:58:49,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:58:49,672 INFO L495 AbstractCegarLoop]: Abstraction has 341 states and 443 transitions. [2022-11-02 19:58:49,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:49,672 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 443 transitions. [2022-11-02 19:58:49,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-02 19:58:49,674 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:58:49,674 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:58:49,697 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (59)] Forceful destruction successful, exit code 0 [2022-11-02 19:58:49,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:58:49,875 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:58:49,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:58:49,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1985632043, now seen corresponding path program 1 times [2022-11-02 19:58:49,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:58:49,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [442819607] [2022-11-02 19:58:49,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:58:49,876 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:58:49,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:58:49,877 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:58:49,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2022-11-02 19:58:50,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:50,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 19:58:50,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:58:51,060 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:58:51,060 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:58:51,060 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:58:51,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [442819607] [2022-11-02 19:58:51,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [442819607] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:58:51,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:58:51,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 19:58:51,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220579716] [2022-11-02 19:58:51,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:58:51,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:58:51,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:58:51,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:58:51,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:58:51,062 INFO L87 Difference]: Start difference. First operand 341 states and 443 transitions. Second operand has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:52,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:58:52,263 INFO L93 Difference]: Finished difference Result 1103 states and 1453 transitions. [2022-11-02 19:58:52,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 19:58:52,264 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2022-11-02 19:58:52,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:58:52,265 INFO L225 Difference]: With dead ends: 1103 [2022-11-02 19:58:52,266 INFO L226 Difference]: Without dead ends: 788 [2022-11-02 19:58:52,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-02 19:58:52,266 INFO L413 NwaCegarLoop]: 416 mSDtfsCounter, 1874 mSDsluCounter, 1581 mSDsCounter, 0 mSdLazyCounter, 839 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1874 SdHoareTripleChecker+Valid, 1997 SdHoareTripleChecker+Invalid, 849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:58:52,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1874 Valid, 1997 Invalid, 849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 839 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-02 19:58:52,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2022-11-02 19:58:52,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 345. [2022-11-02 19:58:52,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 344 states have (on average 1.302325581395349) internal successors, (448), 344 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:52,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 448 transitions. [2022-11-02 19:58:52,274 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 448 transitions. Word has length 222 [2022-11-02 19:58:52,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:58:52,274 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 448 transitions. [2022-11-02 19:58:52,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:52,275 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 448 transitions. [2022-11-02 19:58:52,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-02 19:58:52,276 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:58:52,276 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:58:52,299 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (60)] Forceful destruction successful, exit code 0 [2022-11-02 19:58:52,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:58:52,477 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:58:52,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:58:52,477 INFO L85 PathProgramCache]: Analyzing trace with hash -432852435, now seen corresponding path program 1 times [2022-11-02 19:58:52,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:58:52,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [127579411] [2022-11-02 19:58:52,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:58:52,479 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:58:52,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:58:52,480 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:58:52,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (61)] Waiting until timeout for monitored process [2022-11-02 19:58:53,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:53,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 19:58:53,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:58:53,633 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:58:53,633 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:58:53,633 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:58:53,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [127579411] [2022-11-02 19:58:53,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [127579411] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:58:53,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:58:53,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 19:58:53,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470585921] [2022-11-02 19:58:53,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:58:53,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:58:53,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:58:53,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:58:53,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:58:53,635 INFO L87 Difference]: Start difference. First operand 345 states and 448 transitions. Second operand has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:54,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:58:54,885 INFO L93 Difference]: Finished difference Result 1113 states and 1464 transitions. [2022-11-02 19:58:54,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 19:58:54,886 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2022-11-02 19:58:54,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:58:54,887 INFO L225 Difference]: With dead ends: 1113 [2022-11-02 19:58:54,887 INFO L226 Difference]: Without dead ends: 794 [2022-11-02 19:58:54,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-02 19:58:54,888 INFO L413 NwaCegarLoop]: 419 mSDtfsCounter, 1869 mSDsluCounter, 1585 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1869 SdHoareTripleChecker+Valid, 2004 SdHoareTripleChecker+Invalid, 854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:58:54,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1869 Valid, 2004 Invalid, 854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 844 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-02 19:58:54,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2022-11-02 19:58:54,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 347. [2022-11-02 19:58:54,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 346 states have (on average 1.300578034682081) internal successors, (450), 346 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:54,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 450 transitions. [2022-11-02 19:58:54,899 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 450 transitions. Word has length 222 [2022-11-02 19:58:54,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:58:54,900 INFO L495 AbstractCegarLoop]: Abstraction has 347 states and 450 transitions. [2022-11-02 19:58:54,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:54,900 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 450 transitions. [2022-11-02 19:58:54,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-02 19:58:54,901 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:58:54,901 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:58:54,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (61)] Forceful destruction successful, exit code 0 [2022-11-02 19:58:55,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:58:55,114 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:58:55,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:58:55,115 INFO L85 PathProgramCache]: Analyzing trace with hash 892003759, now seen corresponding path program 1 times [2022-11-02 19:58:55,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:58:55,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1960791015] [2022-11-02 19:58:55,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:58:55,116 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:58:55,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:58:55,117 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:58:55,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2022-11-02 19:58:55,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:55,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 19:58:55,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:58:56,310 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:58:56,311 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:58:56,311 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:58:56,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1960791015] [2022-11-02 19:58:56,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1960791015] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:58:56,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:58:56,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 19:58:56,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351663071] [2022-11-02 19:58:56,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:58:56,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:58:56,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:58:56,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:58:56,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:58:56,313 INFO L87 Difference]: Start difference. First operand 347 states and 450 transitions. Second operand has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:57,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:58:57,676 INFO L93 Difference]: Finished difference Result 1121 states and 1472 transitions. [2022-11-02 19:58:57,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 19:58:57,676 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2022-11-02 19:58:57,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:58:57,678 INFO L225 Difference]: With dead ends: 1121 [2022-11-02 19:58:57,678 INFO L226 Difference]: Without dead ends: 800 [2022-11-02 19:58:57,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-02 19:58:57,679 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 1864 mSDsluCounter, 1589 mSDsCounter, 0 mSdLazyCounter, 849 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1864 SdHoareTripleChecker+Valid, 2011 SdHoareTripleChecker+Invalid, 859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-02 19:58:57,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1864 Valid, 2011 Invalid, 859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 849 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-02 19:58:57,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2022-11-02 19:58:57,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 349. [2022-11-02 19:58:57,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 348 states have (on average 1.2988505747126438) internal successors, (452), 348 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:57,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 452 transitions. [2022-11-02 19:58:57,691 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 452 transitions. Word has length 222 [2022-11-02 19:58:57,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:58:57,691 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 452 transitions. [2022-11-02 19:58:57,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:58:57,691 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 452 transitions. [2022-11-02 19:58:57,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-02 19:58:57,692 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:58:57,693 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:58:57,721 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (62)] Forceful destruction successful, exit code 0 [2022-11-02 19:58:57,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:58:57,909 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:58:57,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:58:57,909 INFO L85 PathProgramCache]: Analyzing trace with hash -165834319, now seen corresponding path program 1 times [2022-11-02 19:58:57,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:58:57,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [753218468] [2022-11-02 19:58:57,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:58:57,912 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:58:57,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:58:57,913 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:58:57,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (63)] Waiting until timeout for monitored process [2022-11-02 19:58:58,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:58:58,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 19:58:58,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:58:59,088 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:58:59,088 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:58:59,088 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:58:59,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [753218468] [2022-11-02 19:58:59,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [753218468] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:58:59,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:58:59,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 19:58:59,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772618660] [2022-11-02 19:58:59,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:58:59,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:58:59,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:58:59,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:58:59,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:58:59,090 INFO L87 Difference]: Start difference. First operand 349 states and 452 transitions. Second operand has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:00,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:59:00,299 INFO L93 Difference]: Finished difference Result 1129 states and 1480 transitions. [2022-11-02 19:59:00,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 19:59:00,300 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2022-11-02 19:59:00,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:59:00,302 INFO L225 Difference]: With dead ends: 1129 [2022-11-02 19:59:00,302 INFO L226 Difference]: Without dead ends: 806 [2022-11-02 19:59:00,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-02 19:59:00,303 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 1859 mSDsluCounter, 1593 mSDsCounter, 0 mSdLazyCounter, 854 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1859 SdHoareTripleChecker+Valid, 2018 SdHoareTripleChecker+Invalid, 864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:59:00,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1859 Valid, 2018 Invalid, 864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 854 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-02 19:59:00,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2022-11-02 19:59:00,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 351. [2022-11-02 19:59:00,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 350 states have (on average 1.2971428571428572) internal successors, (454), 350 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:00,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 454 transitions. [2022-11-02 19:59:00,314 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 454 transitions. Word has length 222 [2022-11-02 19:59:00,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:59:00,315 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 454 transitions. [2022-11-02 19:59:00,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:00,315 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 454 transitions. [2022-11-02 19:59:00,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-02 19:59:00,316 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:59:00,317 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:59:00,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (63)] Forceful destruction successful, exit code 0 [2022-11-02 19:59:00,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:59:00,533 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:59:00,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:59:00,534 INFO L85 PathProgramCache]: Analyzing trace with hash 74405427, now seen corresponding path program 1 times [2022-11-02 19:59:00,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:59:00,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [661472079] [2022-11-02 19:59:00,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:00,535 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:59:00,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:59:00,536 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:59:00,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (64)] Waiting until timeout for monitored process [2022-11-02 19:59:01,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:01,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 19:59:01,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:59:01,704 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:59:01,704 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:59:01,704 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:59:01,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [661472079] [2022-11-02 19:59:01,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [661472079] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:59:01,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:59:01,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 19:59:01,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834503220] [2022-11-02 19:59:01,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:59:01,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:59:01,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:59:01,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:59:01,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:59:01,706 INFO L87 Difference]: Start difference. First operand 351 states and 454 transitions. Second operand has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:02,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:59:02,922 INFO L93 Difference]: Finished difference Result 1137 states and 1488 transitions. [2022-11-02 19:59:02,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 19:59:02,923 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2022-11-02 19:59:02,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:59:02,924 INFO L225 Difference]: With dead ends: 1137 [2022-11-02 19:59:02,924 INFO L226 Difference]: Without dead ends: 812 [2022-11-02 19:59:02,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-02 19:59:02,925 INFO L413 NwaCegarLoop]: 428 mSDtfsCounter, 1854 mSDsluCounter, 1597 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1854 SdHoareTripleChecker+Valid, 2025 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:59:02,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1854 Valid, 2025 Invalid, 869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-02 19:59:02,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2022-11-02 19:59:02,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 353. [2022-11-02 19:59:02,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 352 states have (on average 1.2954545454545454) internal successors, (456), 352 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:02,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 456 transitions. [2022-11-02 19:59:02,935 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 456 transitions. Word has length 222 [2022-11-02 19:59:02,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:59:02,936 INFO L495 AbstractCegarLoop]: Abstraction has 353 states and 456 transitions. [2022-11-02 19:59:02,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:02,936 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 456 transitions. [2022-11-02 19:59:02,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-02 19:59:02,937 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:59:02,937 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:59:02,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (64)] Forceful destruction successful, exit code 0 [2022-11-02 19:59:03,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:59:03,145 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:59:03,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:59:03,145 INFO L85 PathProgramCache]: Analyzing trace with hash 101471029, now seen corresponding path program 1 times [2022-11-02 19:59:03,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:59:03,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [561776551] [2022-11-02 19:59:03,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:03,147 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:59:03,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:59:03,148 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:59:03,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (65)] Waiting until timeout for monitored process [2022-11-02 19:59:03,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:03,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 19:59:03,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:59:04,317 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:59:04,318 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:59:04,318 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:59:04,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [561776551] [2022-11-02 19:59:04,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [561776551] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:59:04,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:59:04,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 19:59:04,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111390404] [2022-11-02 19:59:04,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:59:04,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 19:59:04,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:59:04,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 19:59:04,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:59:04,320 INFO L87 Difference]: Start difference. First operand 353 states and 456 transitions. Second operand has 7 states, 7 states have (on average 31.714285714285715) internal successors, (222), 7 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:05,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:59:05,329 INFO L93 Difference]: Finished difference Result 1093 states and 1429 transitions. [2022-11-02 19:59:05,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 19:59:05,330 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 31.714285714285715) internal successors, (222), 7 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2022-11-02 19:59:05,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:59:05,332 INFO L225 Difference]: With dead ends: 1093 [2022-11-02 19:59:05,332 INFO L226 Difference]: Without dead ends: 766 [2022-11-02 19:59:05,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-11-02 19:59:05,333 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 1558 mSDsluCounter, 1134 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1558 SdHoareTripleChecker+Valid, 1565 SdHoareTripleChecker+Invalid, 690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 19:59:05,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1558 Valid, 1565 Invalid, 690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 683 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-02 19:59:05,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2022-11-02 19:59:05,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 355. [2022-11-02 19:59:05,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 354 states have (on average 1.2937853107344632) internal successors, (458), 354 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:05,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 458 transitions. [2022-11-02 19:59:05,344 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 458 transitions. Word has length 222 [2022-11-02 19:59:05,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:59:05,345 INFO L495 AbstractCegarLoop]: Abstraction has 355 states and 458 transitions. [2022-11-02 19:59:05,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 31.714285714285715) internal successors, (222), 7 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:05,345 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 458 transitions. [2022-11-02 19:59:05,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-02 19:59:05,346 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:59:05,346 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:59:05,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (65)] Forceful destruction successful, exit code 0 [2022-11-02 19:59:05,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:59:05,547 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:59:05,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:59:05,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1835575479, now seen corresponding path program 1 times [2022-11-02 19:59:05,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:59:05,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [270765373] [2022-11-02 19:59:05,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:05,548 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:59:05,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:59:05,549 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:59:05,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (66)] Waiting until timeout for monitored process [2022-11-02 19:59:06,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:06,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 19:59:06,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:59:06,743 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:59:06,743 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:59:06,743 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:59:06,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [270765373] [2022-11-02 19:59:06,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [270765373] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:59:06,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:59:06,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 19:59:06,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369554618] [2022-11-02 19:59:06,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:59:06,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:59:06,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:59:06,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:59:06,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:59:06,745 INFO L87 Difference]: Start difference. First operand 355 states and 458 transitions. Second operand has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:07,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:59:07,956 INFO L93 Difference]: Finished difference Result 1111 states and 1451 transitions. [2022-11-02 19:59:07,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 19:59:07,956 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2022-11-02 19:59:07,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:59:07,958 INFO L225 Difference]: With dead ends: 1111 [2022-11-02 19:59:07,958 INFO L226 Difference]: Without dead ends: 782 [2022-11-02 19:59:07,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-02 19:59:07,959 INFO L413 NwaCegarLoop]: 438 mSDtfsCounter, 1796 mSDsluCounter, 1597 mSDsCounter, 0 mSdLazyCounter, 862 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1796 SdHoareTripleChecker+Valid, 2035 SdHoareTripleChecker+Invalid, 872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:59:07,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1796 Valid, 2035 Invalid, 872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 862 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-02 19:59:07,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2022-11-02 19:59:07,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 359. [2022-11-02 19:59:07,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 358 states have (on average 1.2932960893854748) internal successors, (463), 358 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:07,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 463 transitions. [2022-11-02 19:59:07,987 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 463 transitions. Word has length 222 [2022-11-02 19:59:07,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:59:07,987 INFO L495 AbstractCegarLoop]: Abstraction has 359 states and 463 transitions. [2022-11-02 19:59:07,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:07,988 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 463 transitions. [2022-11-02 19:59:07,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-02 19:59:07,989 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:59:07,989 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:59:08,019 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (66)] Forceful destruction successful, exit code 0 [2022-11-02 19:59:08,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:59:08,204 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:59:08,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:59:08,205 INFO L85 PathProgramCache]: Analyzing trace with hash 868224825, now seen corresponding path program 1 times [2022-11-02 19:59:08,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:59:08,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1664569066] [2022-11-02 19:59:08,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:08,206 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:59:08,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:59:08,207 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:59:08,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (67)] Waiting until timeout for monitored process [2022-11-02 19:59:08,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:08,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 19:59:08,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:59:09,550 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:59:09,550 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:59:09,550 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:59:09,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1664569066] [2022-11-02 19:59:09,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1664569066] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:59:09,550 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:59:09,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 19:59:09,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590449377] [2022-11-02 19:59:09,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:59:09,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:59:09,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:59:09,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:59:09,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:59:09,552 INFO L87 Difference]: Start difference. First operand 359 states and 463 transitions. Second operand has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:10,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:59:10,999 INFO L93 Difference]: Finished difference Result 1121 states and 1462 transitions. [2022-11-02 19:59:11,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 19:59:11,000 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2022-11-02 19:59:11,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:59:11,001 INFO L225 Difference]: With dead ends: 1121 [2022-11-02 19:59:11,002 INFO L226 Difference]: Without dead ends: 788 [2022-11-02 19:59:11,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-02 19:59:11,003 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 1791 mSDsluCounter, 1601 mSDsCounter, 0 mSdLazyCounter, 867 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1791 SdHoareTripleChecker+Valid, 2042 SdHoareTripleChecker+Invalid, 877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-02 19:59:11,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1791 Valid, 2042 Invalid, 877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 867 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-02 19:59:11,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2022-11-02 19:59:11,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 361. [2022-11-02 19:59:11,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 360 states have (on average 1.2916666666666667) internal successors, (465), 360 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:11,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 465 transitions. [2022-11-02 19:59:11,017 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 465 transitions. Word has length 222 [2022-11-02 19:59:11,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:59:11,017 INFO L495 AbstractCegarLoop]: Abstraction has 361 states and 465 transitions. [2022-11-02 19:59:11,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:11,018 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 465 transitions. [2022-11-02 19:59:11,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-02 19:59:11,019 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:59:11,019 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:59:11,052 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (67)] Forceful destruction successful, exit code 0 [2022-11-02 19:59:11,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:59:11,237 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:59:11,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:59:11,237 INFO L85 PathProgramCache]: Analyzing trace with hash 375598651, now seen corresponding path program 1 times [2022-11-02 19:59:11,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:59:11,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1642278291] [2022-11-02 19:59:11,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:11,239 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:59:11,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:59:11,241 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:59:11,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (68)] Waiting until timeout for monitored process [2022-11-02 19:59:12,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:12,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 19:59:12,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:59:12,750 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:59:12,751 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:59:12,751 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:59:12,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1642278291] [2022-11-02 19:59:12,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1642278291] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:59:12,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:59:12,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 19:59:12,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114017077] [2022-11-02 19:59:12,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:59:12,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:59:12,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:59:12,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:59:12,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:59:12,753 INFO L87 Difference]: Start difference. First operand 361 states and 465 transitions. Second operand has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:14,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:59:14,153 INFO L93 Difference]: Finished difference Result 1129 states and 1470 transitions. [2022-11-02 19:59:14,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 19:59:14,153 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2022-11-02 19:59:14,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:59:14,155 INFO L225 Difference]: With dead ends: 1129 [2022-11-02 19:59:14,155 INFO L226 Difference]: Without dead ends: 794 [2022-11-02 19:59:14,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-02 19:59:14,156 INFO L413 NwaCegarLoop]: 444 mSDtfsCounter, 1786 mSDsluCounter, 1605 mSDsCounter, 0 mSdLazyCounter, 872 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1786 SdHoareTripleChecker+Valid, 2049 SdHoareTripleChecker+Invalid, 882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-02 19:59:14,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1786 Valid, 2049 Invalid, 882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 872 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-02 19:59:14,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2022-11-02 19:59:14,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 363. [2022-11-02 19:59:14,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 362 states have (on average 1.2900552486187846) internal successors, (467), 362 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:14,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 467 transitions. [2022-11-02 19:59:14,166 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 467 transitions. Word has length 222 [2022-11-02 19:59:14,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:59:14,167 INFO L495 AbstractCegarLoop]: Abstraction has 363 states and 467 transitions. [2022-11-02 19:59:14,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:14,167 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 467 transitions. [2022-11-02 19:59:14,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-02 19:59:14,168 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:59:14,168 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:59:14,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (68)] Forceful destruction successful, exit code 0 [2022-11-02 19:59:14,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:59:14,369 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:59:14,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:59:14,369 INFO L85 PathProgramCache]: Analyzing trace with hash -840555075, now seen corresponding path program 1 times [2022-11-02 19:59:14,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:59:14,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [446684541] [2022-11-02 19:59:14,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:14,371 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:59:14,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:59:14,372 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:59:14,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (69)] Waiting until timeout for monitored process [2022-11-02 19:59:15,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:15,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 19:59:15,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:59:15,756 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:59:15,756 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:59:15,756 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:59:15,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [446684541] [2022-11-02 19:59:15,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [446684541] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:59:15,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:59:15,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 19:59:15,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533792344] [2022-11-02 19:59:15,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:59:15,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:59:15,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:59:15,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:59:15,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:59:15,758 INFO L87 Difference]: Start difference. First operand 363 states and 467 transitions. Second operand has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:17,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:59:17,308 INFO L93 Difference]: Finished difference Result 1137 states and 1478 transitions. [2022-11-02 19:59:17,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 19:59:17,308 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2022-11-02 19:59:17,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:59:17,310 INFO L225 Difference]: With dead ends: 1137 [2022-11-02 19:59:17,310 INFO L226 Difference]: Without dead ends: 800 [2022-11-02 19:59:17,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-02 19:59:17,311 INFO L413 NwaCegarLoop]: 447 mSDtfsCounter, 1781 mSDsluCounter, 1609 mSDsCounter, 0 mSdLazyCounter, 877 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1781 SdHoareTripleChecker+Valid, 2056 SdHoareTripleChecker+Invalid, 887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-02 19:59:17,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1781 Valid, 2056 Invalid, 887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 877 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-02 19:59:17,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2022-11-02 19:59:17,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 365. [2022-11-02 19:59:17,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 364 states have (on average 1.2884615384615385) internal successors, (469), 364 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:17,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 469 transitions. [2022-11-02 19:59:17,325 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 469 transitions. Word has length 222 [2022-11-02 19:59:17,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:59:17,326 INFO L495 AbstractCegarLoop]: Abstraction has 365 states and 469 transitions. [2022-11-02 19:59:17,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:17,326 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 469 transitions. [2022-11-02 19:59:17,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-02 19:59:17,328 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:59:17,328 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:59:17,360 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (69)] Ended with exit code 0 [2022-11-02 19:59:17,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:59:17,545 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:59:17,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:59:17,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1768232383, now seen corresponding path program 1 times [2022-11-02 19:59:17,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:59:17,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2074461499] [2022-11-02 19:59:17,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:17,547 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:59:17,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:59:17,548 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:59:17,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (70)] Waiting until timeout for monitored process [2022-11-02 19:59:18,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:18,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 19:59:18,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:59:19,034 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:59:19,034 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:59:19,034 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:59:19,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2074461499] [2022-11-02 19:59:19,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2074461499] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:59:19,035 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:59:19,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 19:59:19,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838674504] [2022-11-02 19:59:19,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:59:19,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:59:19,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:59:19,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:59:19,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:59:19,036 INFO L87 Difference]: Start difference. First operand 365 states and 469 transitions. Second operand has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:20,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:59:20,591 INFO L93 Difference]: Finished difference Result 1145 states and 1486 transitions. [2022-11-02 19:59:20,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 19:59:20,592 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2022-11-02 19:59:20,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:59:20,594 INFO L225 Difference]: With dead ends: 1145 [2022-11-02 19:59:20,594 INFO L226 Difference]: Without dead ends: 806 [2022-11-02 19:59:20,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-02 19:59:20,595 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 1776 mSDsluCounter, 1613 mSDsCounter, 0 mSdLazyCounter, 882 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1776 SdHoareTripleChecker+Valid, 2063 SdHoareTripleChecker+Invalid, 892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-02 19:59:20,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1776 Valid, 2063 Invalid, 892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 882 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-02 19:59:20,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2022-11-02 19:59:20,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 367. [2022-11-02 19:59:20,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 366 states have (on average 1.2868852459016393) internal successors, (471), 366 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:20,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 471 transitions. [2022-11-02 19:59:20,611 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 471 transitions. Word has length 222 [2022-11-02 19:59:20,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:59:20,611 INFO L495 AbstractCegarLoop]: Abstraction has 367 states and 471 transitions. [2022-11-02 19:59:20,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:20,612 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 471 transitions. [2022-11-02 19:59:20,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-02 19:59:20,613 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:59:20,613 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:59:20,645 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (70)] Forceful destruction successful, exit code 0 [2022-11-02 19:59:20,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:59:20,837 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:59:20,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:59:20,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1350835777, now seen corresponding path program 1 times [2022-11-02 19:59:20,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:59:20,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [639259021] [2022-11-02 19:59:20,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:20,839 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:59:20,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:59:20,840 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:59:20,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (71)] Waiting until timeout for monitored process [2022-11-02 19:59:21,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:21,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 19:59:21,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:59:22,280 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:59:22,281 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:59:22,281 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:59:22,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [639259021] [2022-11-02 19:59:22,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [639259021] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:59:22,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:59:22,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 19:59:22,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967244112] [2022-11-02 19:59:22,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:59:22,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:59:22,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:59:22,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:59:22,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:59:22,282 INFO L87 Difference]: Start difference. First operand 367 states and 471 transitions. Second operand has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:23,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:59:23,803 INFO L93 Difference]: Finished difference Result 1153 states and 1495 transitions. [2022-11-02 19:59:23,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 19:59:23,804 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2022-11-02 19:59:23,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:59:23,805 INFO L225 Difference]: With dead ends: 1153 [2022-11-02 19:59:23,805 INFO L226 Difference]: Without dead ends: 812 [2022-11-02 19:59:23,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-02 19:59:23,807 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 1770 mSDsluCounter, 1618 mSDsCounter, 0 mSdLazyCounter, 887 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1770 SdHoareTripleChecker+Valid, 2071 SdHoareTripleChecker+Invalid, 897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-02 19:59:23,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1770 Valid, 2071 Invalid, 897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 887 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-02 19:59:23,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2022-11-02 19:59:23,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 369. [2022-11-02 19:59:23,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 368 states have (on average 1.2853260869565217) internal successors, (473), 368 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:23,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 473 transitions. [2022-11-02 19:59:23,822 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 473 transitions. Word has length 222 [2022-11-02 19:59:23,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:59:23,823 INFO L495 AbstractCegarLoop]: Abstraction has 369 states and 473 transitions. [2022-11-02 19:59:23,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:23,823 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 473 transitions. [2022-11-02 19:59:23,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-02 19:59:23,824 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:59:23,825 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:59:23,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (71)] Forceful destruction successful, exit code 0 [2022-11-02 19:59:24,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:59:24,051 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:59:24,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:59:24,051 INFO L85 PathProgramCache]: Analyzing trace with hash -982556861, now seen corresponding path program 1 times [2022-11-02 19:59:24,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:59:24,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1885526452] [2022-11-02 19:59:24,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:24,053 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:59:24,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:59:24,054 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:59:24,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (72)] Waiting until timeout for monitored process [2022-11-02 19:59:24,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:24,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 19:59:24,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:59:25,548 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:59:25,548 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:59:25,548 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:59:25,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1885526452] [2022-11-02 19:59:25,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1885526452] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:59:25,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:59:25,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 19:59:25,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523667369] [2022-11-02 19:59:25,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:59:25,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:59:25,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:59:25,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:59:25,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:59:25,550 INFO L87 Difference]: Start difference. First operand 369 states and 473 transitions. Second operand has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:27,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:59:27,132 INFO L93 Difference]: Finished difference Result 1161 states and 1503 transitions. [2022-11-02 19:59:27,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 19:59:27,133 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2022-11-02 19:59:27,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:59:27,134 INFO L225 Difference]: With dead ends: 1161 [2022-11-02 19:59:27,134 INFO L226 Difference]: Without dead ends: 818 [2022-11-02 19:59:27,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-02 19:59:27,135 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 1765 mSDsluCounter, 1622 mSDsCounter, 0 mSdLazyCounter, 892 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1765 SdHoareTripleChecker+Valid, 2078 SdHoareTripleChecker+Invalid, 902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-02 19:59:27,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1765 Valid, 2078 Invalid, 902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 892 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-02 19:59:27,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2022-11-02 19:59:27,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 371. [2022-11-02 19:59:27,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 370 states have (on average 1.2837837837837838) internal successors, (475), 370 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:27,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 475 transitions. [2022-11-02 19:59:27,145 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 475 transitions. Word has length 222 [2022-11-02 19:59:27,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:59:27,145 INFO L495 AbstractCegarLoop]: Abstraction has 371 states and 475 transitions. [2022-11-02 19:59:27,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:27,146 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 475 transitions. [2022-11-02 19:59:27,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-02 19:59:27,147 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:59:27,147 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:59:27,171 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (72)] Forceful destruction successful, exit code 0 [2022-11-02 19:59:27,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:59:27,348 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:59:27,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:59:27,348 INFO L85 PathProgramCache]: Analyzing trace with hash -421857083, now seen corresponding path program 1 times [2022-11-02 19:59:27,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:59:27,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [468486002] [2022-11-02 19:59:27,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:27,351 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:59:27,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:59:27,352 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:59:27,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (73)] Waiting until timeout for monitored process [2022-11-02 19:59:28,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:28,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 19:59:28,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:59:28,817 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:59:28,817 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:59:28,817 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:59:28,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [468486002] [2022-11-02 19:59:28,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [468486002] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:59:28,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:59:28,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 19:59:28,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256588304] [2022-11-02 19:59:28,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:59:28,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:59:28,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:59:28,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:59:28,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:59:28,819 INFO L87 Difference]: Start difference. First operand 371 states and 475 transitions. Second operand has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:30,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:59:30,390 INFO L93 Difference]: Finished difference Result 1169 states and 1511 transitions. [2022-11-02 19:59:30,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 19:59:30,391 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2022-11-02 19:59:30,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:59:30,392 INFO L225 Difference]: With dead ends: 1169 [2022-11-02 19:59:30,392 INFO L226 Difference]: Without dead ends: 824 [2022-11-02 19:59:30,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-02 19:59:30,393 INFO L413 NwaCegarLoop]: 459 mSDtfsCounter, 1760 mSDsluCounter, 1626 mSDsCounter, 0 mSdLazyCounter, 897 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1760 SdHoareTripleChecker+Valid, 2085 SdHoareTripleChecker+Invalid, 907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-02 19:59:30,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1760 Valid, 2085 Invalid, 907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 897 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-02 19:59:30,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2022-11-02 19:59:30,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 373. [2022-11-02 19:59:30,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 372 states have (on average 1.282258064516129) internal successors, (477), 372 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:30,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 477 transitions. [2022-11-02 19:59:30,402 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 477 transitions. Word has length 222 [2022-11-02 19:59:30,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:59:30,402 INFO L495 AbstractCegarLoop]: Abstraction has 373 states and 477 transitions. [2022-11-02 19:59:30,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:30,403 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 477 transitions. [2022-11-02 19:59:30,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-02 19:59:30,403 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:59:30,404 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:59:30,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (73)] Forceful destruction successful, exit code 0 [2022-11-02 19:59:30,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:59:30,609 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:59:30,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:59:30,609 INFO L85 PathProgramCache]: Analyzing trace with hash 839060167, now seen corresponding path program 1 times [2022-11-02 19:59:30,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:59:30,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [201808968] [2022-11-02 19:59:30,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:30,611 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:59:30,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:59:30,612 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:59:30,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (74)] Waiting until timeout for monitored process [2022-11-02 19:59:31,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:31,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 19:59:31,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:59:32,048 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:59:32,048 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:59:32,048 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:59:32,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [201808968] [2022-11-02 19:59:32,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [201808968] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:59:32,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:59:32,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 19:59:32,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992822753] [2022-11-02 19:59:32,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:59:32,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:59:32,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:59:32,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:59:32,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:59:32,050 INFO L87 Difference]: Start difference. First operand 373 states and 477 transitions. Second operand has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:33,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:59:33,613 INFO L93 Difference]: Finished difference Result 1183 states and 1527 transitions. [2022-11-02 19:59:33,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 19:59:33,613 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2022-11-02 19:59:33,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:59:33,614 INFO L225 Difference]: With dead ends: 1183 [2022-11-02 19:59:33,614 INFO L226 Difference]: Without dead ends: 836 [2022-11-02 19:59:33,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-02 19:59:33,615 INFO L413 NwaCegarLoop]: 466 mSDtfsCounter, 1754 mSDsluCounter, 1635 mSDsCounter, 0 mSdLazyCounter, 907 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1754 SdHoareTripleChecker+Valid, 2101 SdHoareTripleChecker+Invalid, 917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-02 19:59:33,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1754 Valid, 2101 Invalid, 917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 907 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-02 19:59:33,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2022-11-02 19:59:33,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 377. [2022-11-02 19:59:33,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 1.2819148936170213) internal successors, (482), 376 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:33,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 482 transitions. [2022-11-02 19:59:33,628 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 482 transitions. Word has length 222 [2022-11-02 19:59:33,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:59:33,629 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 482 transitions. [2022-11-02 19:59:33,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.75) internal successors, (222), 8 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:33,629 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 482 transitions. [2022-11-02 19:59:33,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-02 19:59:33,630 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:59:33,631 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:59:33,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (74)] Forceful destruction successful, exit code 0 [2022-11-02 19:59:33,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 74 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:59:33,831 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:59:33,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:59:33,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1282960841, now seen corresponding path program 1 times [2022-11-02 19:59:33,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:59:33,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [76709408] [2022-11-02 19:59:33,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:33,834 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:59:33,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:59:33,835 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:59:33,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (75)] Waiting until timeout for monitored process [2022-11-02 19:59:34,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:34,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 19:59:34,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:59:35,259 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:59:35,260 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:59:35,260 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 19:59:35,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [76709408] [2022-11-02 19:59:35,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [76709408] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:59:35,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:59:35,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 19:59:35,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070352939] [2022-11-02 19:59:35,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:59:35,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 19:59:35,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 19:59:35,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 19:59:35,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:59:35,262 INFO L87 Difference]: Start difference. First operand 377 states and 482 transitions. Second operand has 7 states, 7 states have (on average 31.714285714285715) internal successors, (222), 7 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:36,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:59:36,529 INFO L93 Difference]: Finished difference Result 2316 states and 2982 transitions. [2022-11-02 19:59:36,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 19:59:36,530 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 31.714285714285715) internal successors, (222), 7 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2022-11-02 19:59:36,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:59:36,532 INFO L225 Difference]: With dead ends: 2316 [2022-11-02 19:59:36,533 INFO L226 Difference]: Without dead ends: 1965 [2022-11-02 19:59:36,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2022-11-02 19:59:36,534 INFO L413 NwaCegarLoop]: 385 mSDtfsCounter, 2767 mSDsluCounter, 1267 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2767 SdHoareTripleChecker+Valid, 1652 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:59:36,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2767 Valid, 1652 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 589 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-02 19:59:36,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1965 states. [2022-11-02 19:59:36,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1965 to 675. [2022-11-02 19:59:36,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 674 states have (on average 1.2833827893175074) internal successors, (865), 674 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:36,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 865 transitions. [2022-11-02 19:59:36,555 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 865 transitions. Word has length 222 [2022-11-02 19:59:36,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:59:36,556 INFO L495 AbstractCegarLoop]: Abstraction has 675 states and 865 transitions. [2022-11-02 19:59:36,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 31.714285714285715) internal successors, (222), 7 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:59:36,556 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 865 transitions. [2022-11-02 19:59:36,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-11-02 19:59:36,558 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:59:36,558 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:59:36,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (75)] Forceful destruction successful, exit code 0 [2022-11-02 19:59:36,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 19:59:36,773 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:59:36,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:59:36,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1267442123, now seen corresponding path program 1 times [2022-11-02 19:59:36,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 19:59:36,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1197602584] [2022-11-02 19:59:36,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:36,776 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 19:59:36,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 19:59:36,777 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 19:59:36,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78d520ec-9ba0-40f1-8719-ce803926f204/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (76)] Waiting until timeout for monitored process