./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p15.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/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_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p15.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/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_5c2fd125-4841-4a0c-a253-734b438c8797/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 c987364cd5b3d275ffe2f9fcce601a27cd21bf7f21a4e5bdd8d96666e9465eb2 --- 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 20:24:43,953 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:24:43,955 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:24:44,022 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:24:44,022 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:24:44,028 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:24:44,030 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:24:44,035 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:24:44,038 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:24:44,044 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:24:44,045 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:24:44,048 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:24:44,049 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:24:44,052 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:24:44,054 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:24:44,056 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:24:44,059 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:24:44,060 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:24:44,062 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:24:44,067 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:24:44,069 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:24:44,070 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:24:44,072 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:24:44,073 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:24:44,076 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:24:44,077 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:24:44,077 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:24:44,078 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:24:44,079 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:24:44,080 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:24:44,080 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:24:44,081 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:24:44,082 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:24:44,083 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:24:44,084 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:24:44,085 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:24:44,086 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:24:44,086 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:24:44,086 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:24:44,087 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:24:44,088 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:24:44,089 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-02 20:24:44,118 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:24:44,119 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:24:44,119 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:24:44,120 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:24:44,121 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:24:44,121 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:24:44,122 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:24:44,122 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:24:44,123 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:24:44,123 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:24:44,123 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:24:44,124 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:24:44,124 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:24:44,124 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:24:44,124 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:24:44,125 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:24:44,125 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:24:44,125 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:24:44,126 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:24:44,126 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:24:44,126 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:24:44,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:24:44,127 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:24:44,127 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:24:44,128 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:24:44,128 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:24:44,128 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:24:44,129 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:24:44,129 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:24:44,129 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:24:44,130 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_5c2fd125-4841-4a0c-a253-734b438c8797/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c987364cd5b3d275ffe2f9fcce601a27cd21bf7f21a4e5bdd8d96666e9465eb2 [2022-11-02 20:24:44,450 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:24:44,486 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:24:44,490 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:24:44,492 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:24:44,494 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:24:44,496 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p15.c [2022-11-02 20:24:44,610 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/data/0ceed09e8/e569b9cc786344868962de6125171f3c/FLAG1ee2c2bf9 [2022-11-02 20:24:45,365 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:24:45,366 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p15.c [2022-11-02 20:24:45,378 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/data/0ceed09e8/e569b9cc786344868962de6125171f3c/FLAG1ee2c2bf9 [2022-11-02 20:24:45,642 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/data/0ceed09e8/e569b9cc786344868962de6125171f3c [2022-11-02 20:24:45,646 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:24:45,648 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:24:45,650 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:24:45,650 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:24:45,655 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:24:45,656 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:24:45" (1/1) ... [2022-11-02 20:24:45,658 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63591b69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:45, skipping insertion in model container [2022-11-02 20:24:45,658 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:24:45" (1/1) ... [2022-11-02 20:24:45,668 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:24:45,708 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:24:45,956 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_5c2fd125-4841-4a0c-a253-734b438c8797/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p15.c[1107,1120] [2022-11-02 20:24:46,171 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:24:46,175 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:24:46,189 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_5c2fd125-4841-4a0c-a253-734b438c8797/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p15.c[1107,1120] [2022-11-02 20:24:46,251 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:24:46,266 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:24:46,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:46 WrapperNode [2022-11-02 20:24:46,267 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:24:46,269 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:24:46,269 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:24:46,269 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:24:46,279 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:46" (1/1) ... [2022-11-02 20:24:46,314 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:46" (1/1) ... [2022-11-02 20:24:46,411 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 548 [2022-11-02 20:24:46,412 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:24:46,413 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:24:46,413 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:24:46,413 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:24:46,432 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:46" (1/1) ... [2022-11-02 20:24:46,432 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:46" (1/1) ... [2022-11-02 20:24:46,440 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:46" (1/1) ... [2022-11-02 20:24:46,440 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:46" (1/1) ... [2022-11-02 20:24:46,458 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:46" (1/1) ... [2022-11-02 20:24:46,464 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:46" (1/1) ... [2022-11-02 20:24:46,468 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:46" (1/1) ... [2022-11-02 20:24:46,472 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:46" (1/1) ... [2022-11-02 20:24:46,479 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:24:46,481 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:24:46,481 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:24:46,481 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:24:46,482 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:46" (1/1) ... [2022-11-02 20:24:46,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:24:46,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:24:46,547 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:24:46,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:24:46,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:24:46,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:24:46,892 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:24:46,895 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:24:47,778 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:24:47,788 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:24:47,790 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:24:47,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:24:47 BoogieIcfgContainer [2022-11-02 20:24:47,793 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:24:47,799 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:24:47,799 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:24:47,804 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:24:47,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:24:45" (1/3) ... [2022-11-02 20:24:47,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ba9af8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:24:47, skipping insertion in model container [2022-11-02 20:24:47,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:46" (2/3) ... [2022-11-02 20:24:47,807 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ba9af8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:24:47, skipping insertion in model container [2022-11-02 20:24:47,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:24:47" (3/3) ... [2022-11-02 20:24:47,808 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p15.c [2022-11-02 20:24:47,829 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:24:47,830 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:24:47,896 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:24:47,905 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;@439b4b39, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:24:47,905 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:24:47,911 INFO L276 IsEmpty]: Start isEmpty. Operand has 83 states, 81 states have (on average 1.4938271604938271) internal successors, (121), 82 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:47,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:24:47,919 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:24:47,920 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:24:47,921 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:24:47,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:47,928 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-02 20:24:47,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:24:47,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971831455] [2022-11-02 20:24:47,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:47,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:24:48,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:24:48,320 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 20:24:48,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 20:24:48,598 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 20:24:48,601 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 20:24:48,603 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-02 20:24:48,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:24:48,612 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-02 20:24:48,618 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 20:24:48,666 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-02 20:24:48,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 08:24:48 BoogieIcfgContainer [2022-11-02 20:24:48,679 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 20:24:48,680 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 20:24:48,680 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 20:24:48,681 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 20:24:48,681 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:24:47" (3/4) ... [2022-11-02 20:24:48,685 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-02 20:24:48,685 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 20:24:48,686 INFO L158 Benchmark]: Toolchain (without parser) took 3038.65ms. Allocated memory was 113.2MB in the beginning and 153.1MB in the end (delta: 39.8MB). Free memory was 78.8MB in the beginning and 113.7MB in the end (delta: -34.9MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. [2022-11-02 20:24:48,687 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 79.7MB. Free memory is still 36.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:24:48,689 INFO L158 Benchmark]: CACSL2BoogieTranslator took 618.14ms. Allocated memory is still 113.2MB. Free memory was 78.6MB in the beginning and 80.0MB in the end (delta: -1.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-02 20:24:48,690 INFO L158 Benchmark]: Boogie Procedure Inliner took 143.62ms. Allocated memory is still 113.2MB. Free memory was 80.0MB in the beginning and 74.1MB in the end (delta: 5.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-02 20:24:48,692 INFO L158 Benchmark]: Boogie Preprocessor took 66.88ms. Allocated memory is still 113.2MB. Free memory was 74.1MB in the beginning and 70.6MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-02 20:24:48,693 INFO L158 Benchmark]: RCFGBuilder took 1312.60ms. Allocated memory is still 113.2MB. Free memory was 70.6MB in the beginning and 71.6MB in the end (delta: -936.5kB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2022-11-02 20:24:48,695 INFO L158 Benchmark]: TraceAbstraction took 880.30ms. Allocated memory was 113.2MB in the beginning and 153.1MB in the end (delta: 39.8MB). Free memory was 70.7MB in the beginning and 114.4MB in the end (delta: -43.8MB). Peak memory consumption was 34.0MB. Max. memory is 16.1GB. [2022-11-02 20:24:48,697 INFO L158 Benchmark]: Witness Printer took 5.35ms. Allocated memory is still 153.1MB. Free memory was 114.4MB in the beginning and 113.7MB in the end (delta: 776.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:24:48,702 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 79.7MB. Free memory is still 36.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 618.14ms. Allocated memory is still 113.2MB. Free memory was 78.6MB in the beginning and 80.0MB in the end (delta: -1.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 143.62ms. Allocated memory is still 113.2MB. Free memory was 80.0MB in the beginning and 74.1MB in the end (delta: 5.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 66.88ms. Allocated memory is still 113.2MB. Free memory was 74.1MB in the beginning and 70.6MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1312.60ms. Allocated memory is still 113.2MB. Free memory was 70.6MB in the beginning and 71.6MB in the end (delta: -936.5kB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * TraceAbstraction took 880.30ms. Allocated memory was 113.2MB in the beginning and 153.1MB in the end (delta: 39.8MB). Free memory was 70.7MB in the beginning and 114.4MB in the end (delta: -43.8MB). Peak memory consumption was 34.0MB. Max. memory is 16.1GB. * Witness Printer took 5.35ms. Allocated memory is still 153.1MB. Free memory was 114.4MB in the beginning and 113.7MB in the end (delta: 776.1kB). 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 152, overapproximation of bitwiseOr at line 161, overapproximation of bitwiseAnd at line 146. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L28] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 8); [L29] const SORT_3 msb_SORT_3 = (SORT_3)1 << (8 - 1); [L31] const SORT_10 mask_SORT_10 = (SORT_10)-1 >> (sizeof(SORT_10) * 8 - 32); [L32] const SORT_10 msb_SORT_10 = (SORT_10)1 << (32 - 1); [L34] const SORT_18 mask_SORT_18 = (SORT_18)-1 >> (sizeof(SORT_18) * 8 - 4); [L35] const SORT_18 msb_SORT_18 = (SORT_18)1 << (4 - 1); [L37] const SORT_71 mask_SORT_71 = (SORT_71)-1 >> (sizeof(SORT_71) * 8 - 10); [L38] const SORT_71 msb_SORT_71 = (SORT_71)1 << (10 - 1); [L40] const SORT_1 var_7 = 0; [L41] const SORT_10 var_12 = 1; [L42] const SORT_1 var_15 = 1; [L43] const SORT_18 var_20 = 1; [L44] const SORT_71 var_72 = 0; [L45] const SORT_10 var_81 = 104; [L47] SORT_1 input_2; [L48] SORT_3 input_4; [L49] SORT_1 input_5; [L50] SORT_1 input_6; [L51] SORT_1 input_32; [L52] SORT_18 input_34; [L53] SORT_1 input_36; [L54] SORT_18 input_38; [L55] SORT_1 input_40; [L56] SORT_1 input_42; [L57] SORT_1 input_48; [L58] SORT_1 input_50; [L59] SORT_1 input_52; [L60] SORT_3 input_54; [L61] SORT_1 input_57; [L62] SORT_1 input_67; [L63] SORT_1 input_75; [L64] SORT_1 input_76; [L65] SORT_1 input_77; [L66] SORT_1 input_89; [L67] SORT_1 input_90; [L68] SORT_1 input_91; [L69] SORT_1 input_102; [L70] SORT_1 input_108; [L71] SORT_1 input_114; [L72] SORT_1 input_125; [L73] SORT_1 input_127; [L74] SORT_71 input_142; [L76] SORT_1 state_8 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L77] SORT_1 state_16 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L78] SORT_1 state_28 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L79] SORT_1 state_30 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L80] SORT_1 state_44 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L81] SORT_1 state_46 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L82] SORT_1 state_59 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L83] SORT_1 state_61 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L84] SORT_1 state_63 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L85] SORT_1 state_65 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L86] SORT_1 state_69 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L87] SORT_71 state_73 = __VERIFIER_nondet_ushort() & mask_SORT_71; [L89] SORT_1 init_9_arg_1 = var_7; [L90] state_8 = init_9_arg_1 [L91] SORT_1 init_17_arg_1 = var_15; [L92] state_16 = init_17_arg_1 [L93] SORT_1 init_29_arg_1 = var_7; [L94] state_28 = init_29_arg_1 [L95] SORT_1 init_31_arg_1 = var_7; [L96] state_30 = init_31_arg_1 [L97] SORT_1 init_45_arg_1 = var_7; [L98] state_44 = init_45_arg_1 [L99] SORT_1 init_47_arg_1 = var_7; [L100] state_46 = init_47_arg_1 [L101] SORT_1 init_60_arg_1 = var_7; [L102] state_59 = init_60_arg_1 [L103] SORT_1 init_62_arg_1 = var_7; [L104] state_61 = init_62_arg_1 [L105] SORT_1 init_64_arg_1 = var_7; [L106] state_63 = init_64_arg_1 [L107] SORT_1 init_66_arg_1 = var_7; [L108] state_65 = init_66_arg_1 [L109] SORT_1 init_70_arg_1 = var_7; [L110] state_69 = init_70_arg_1 [L111] SORT_71 init_74_arg_1 = var_72; [L112] state_73 = init_74_arg_1 VAL [init_17_arg_1=1, init_29_arg_1=0, init_31_arg_1=0, init_45_arg_1=0, init_47_arg_1=0, init_60_arg_1=0, init_62_arg_1=0, init_64_arg_1=0, init_66_arg_1=0, init_70_arg_1=0, init_74_arg_1=0, init_9_arg_1=0, mask_SORT_1=1, mask_SORT_10=4294967295, mask_SORT_18=15, mask_SORT_3=255, mask_SORT_71=1023, msb_SORT_1=1, msb_SORT_10=2147483648, msb_SORT_18=8, msb_SORT_3=128, msb_SORT_71=512, state_16=1, state_28=0, state_30=0, state_44=0, state_46=0, state_59=0, state_61=0, state_63=0, state_65=0, state_69=0, state_73=0, state_8=0, var_12=1, var_15=1, var_20=1, var_7=0, var_72=0, var_81=104] [L115] input_2 = __VERIFIER_nondet_uchar() [L116] input_4 = __VERIFIER_nondet_uchar() [L117] input_5 = __VERIFIER_nondet_uchar() [L118] input_6 = __VERIFIER_nondet_uchar() [L119] input_32 = __VERIFIER_nondet_uchar() [L120] input_34 = __VERIFIER_nondet_uchar() [L121] input_36 = __VERIFIER_nondet_uchar() [L122] input_38 = __VERIFIER_nondet_uchar() [L123] input_40 = __VERIFIER_nondet_uchar() [L124] input_42 = __VERIFIER_nondet_uchar() [L125] input_48 = __VERIFIER_nondet_uchar() [L126] input_50 = __VERIFIER_nondet_uchar() [L127] input_52 = __VERIFIER_nondet_uchar() [L128] input_54 = __VERIFIER_nondet_uchar() [L129] input_57 = __VERIFIER_nondet_uchar() [L130] input_67 = __VERIFIER_nondet_uchar() [L131] input_75 = __VERIFIER_nondet_uchar() [L132] input_76 = __VERIFIER_nondet_uchar() [L133] input_77 = __VERIFIER_nondet_uchar() [L134] input_89 = __VERIFIER_nondet_uchar() [L135] input_90 = __VERIFIER_nondet_uchar() [L136] input_91 = __VERIFIER_nondet_uchar() [L137] input_102 = __VERIFIER_nondet_uchar() [L138] input_108 = __VERIFIER_nondet_uchar() [L139] input_114 = __VERIFIER_nondet_uchar() [L140] input_125 = __VERIFIER_nondet_uchar() [L141] input_127 = __VERIFIER_nondet_uchar() [L142] input_142 = __VERIFIER_nondet_ushort() [L145] SORT_1 var_11_arg_0 = state_8; [L146] var_11_arg_0 = var_11_arg_0 & mask_SORT_1 [L147] SORT_10 var_11 = var_11_arg_0; [L148] SORT_10 var_13_arg_0 = var_11; [L149] SORT_10 var_13_arg_1 = var_12; [L150] SORT_1 var_13 = var_13_arg_0 == var_13_arg_1; [L151] SORT_1 var_14_arg_0 = var_13; [L152] SORT_1 var_14 = ~var_14_arg_0; [L153] SORT_1 var_19_arg_0 = state_16; [L154] var_19_arg_0 = var_19_arg_0 & mask_SORT_1 [L155] SORT_18 var_19 = var_19_arg_0; [L156] SORT_18 var_21_arg_0 = var_19; [L157] SORT_18 var_21_arg_1 = var_20; [L158] SORT_1 var_21 = var_21_arg_0 == var_21_arg_1; [L159] SORT_1 var_22_arg_0 = var_14; [L160] SORT_1 var_22_arg_1 = var_21; [L161] SORT_1 var_22 = var_22_arg_0 | var_22_arg_1; [L162] SORT_1 var_25_arg_0 = var_22; [L163] SORT_1 var_25 = ~var_25_arg_0; [L164] SORT_1 var_26_arg_0 = var_15; [L165] SORT_1 var_26_arg_1 = var_25; [L166] SORT_1 var_26 = var_26_arg_0 & var_26_arg_1; [L167] var_26 = var_26 & mask_SORT_1 [L168] SORT_1 bad_27_arg_0 = var_26; [L169] CALL __VERIFIER_assert(!(bad_27_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, 83 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=83occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 20:24:48,771 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/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_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p15.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/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_5c2fd125-4841-4a0c-a253-734b438c8797/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 c987364cd5b3d275ffe2f9fcce601a27cd21bf7f21a4e5bdd8d96666e9465eb2 --- 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 20:24:51,505 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:24:51,508 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:24:51,542 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:24:51,543 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:24:51,544 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:24:51,546 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:24:51,548 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:24:51,550 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:24:51,552 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:24:51,553 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:24:51,554 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:24:51,555 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:24:51,556 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:24:51,558 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:24:51,560 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:24:51,561 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:24:51,562 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:24:51,564 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:24:51,567 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:24:51,569 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:24:51,571 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:24:51,573 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:24:51,574 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:24:51,578 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:24:51,579 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:24:51,580 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:24:51,581 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:24:51,582 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:24:51,583 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:24:51,583 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:24:51,585 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:24:51,586 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:24:51,587 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:24:51,589 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:24:51,589 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:24:51,590 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:24:51,591 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:24:51,591 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:24:51,593 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:24:51,594 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:24:51,595 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-02 20:24:51,626 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:24:51,627 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:24:51,627 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:24:51,627 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:24:51,628 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:24:51,629 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:24:51,630 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:24:51,630 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:24:51,630 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:24:51,631 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:24:51,631 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:24:51,631 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:24:51,631 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:24:51,632 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:24:51,632 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 20:24:51,632 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-02 20:24:51,632 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-02 20:24:51,633 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:24:51,633 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:24:51,633 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:24:51,634 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:24:51,634 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:24:51,634 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:24:51,634 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:24:51,635 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:24:51,635 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:24:51,635 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:24:51,636 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-02 20:24:51,636 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-02 20:24:51,636 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:24:51,636 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:24:51,637 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:24:51,637 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-02 20:24:51,637 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_5c2fd125-4841-4a0c-a253-734b438c8797/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c987364cd5b3d275ffe2f9fcce601a27cd21bf7f21a4e5bdd8d96666e9465eb2 [2022-11-02 20:24:52,078 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:24:52,114 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:24:52,117 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:24:52,119 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:24:52,123 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:24:52,125 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p15.c [2022-11-02 20:24:52,224 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/data/f97f3d878/19da3a8c553745f88e4b33a315df4dd4/FLAG0fec7e7de [2022-11-02 20:24:52,946 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:24:52,946 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p15.c [2022-11-02 20:24:52,967 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/data/f97f3d878/19da3a8c553745f88e4b33a315df4dd4/FLAG0fec7e7de [2022-11-02 20:24:53,252 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/data/f97f3d878/19da3a8c553745f88e4b33a315df4dd4 [2022-11-02 20:24:53,255 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:24:53,257 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:24:53,259 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:24:53,259 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:24:53,271 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:24:53,272 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:24:53" (1/1) ... [2022-11-02 20:24:53,274 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58a88a2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:53, skipping insertion in model container [2022-11-02 20:24:53,274 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:24:53" (1/1) ... [2022-11-02 20:24:53,287 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:24:53,332 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:24:53,502 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_5c2fd125-4841-4a0c-a253-734b438c8797/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p15.c[1107,1120] [2022-11-02 20:24:53,690 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:24:53,716 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:24:53,730 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_5c2fd125-4841-4a0c-a253-734b438c8797/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p15.c[1107,1120] [2022-11-02 20:24:53,872 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:24:53,900 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:24:53,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:53 WrapperNode [2022-11-02 20:24:53,901 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:24:53,902 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:24:53,903 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:24:53,903 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:24:53,918 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:53" (1/1) ... [2022-11-02 20:24:53,945 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:53" (1/1) ... [2022-11-02 20:24:54,011 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 548 [2022-11-02 20:24:54,016 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:24:54,018 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:24:54,018 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:24:54,018 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:24:54,030 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:53" (1/1) ... [2022-11-02 20:24:54,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:53" (1/1) ... [2022-11-02 20:24:54,054 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:53" (1/1) ... [2022-11-02 20:24:54,054 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:53" (1/1) ... [2022-11-02 20:24:54,067 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:53" (1/1) ... [2022-11-02 20:24:54,087 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:53" (1/1) ... [2022-11-02 20:24:54,096 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:53" (1/1) ... [2022-11-02 20:24:54,100 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:53" (1/1) ... [2022-11-02 20:24:54,118 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:24:54,120 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:24:54,120 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:24:54,120 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:24:54,121 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:53" (1/1) ... [2022-11-02 20:24:54,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:24:54,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:24:54,165 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:24:54,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:24:54,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:24:54,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:24:54,452 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:24:54,468 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:24:55,373 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:24:55,384 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:24:55,395 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 20:24:55,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:24:55 BoogieIcfgContainer [2022-11-02 20:24:55,403 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:24:55,406 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:24:55,409 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:24:55,413 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:24:55,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:24:53" (1/3) ... [2022-11-02 20:24:55,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23f20ab1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:24:55, skipping insertion in model container [2022-11-02 20:24:55,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:24:53" (2/3) ... [2022-11-02 20:24:55,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23f20ab1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:24:55, skipping insertion in model container [2022-11-02 20:24:55,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:24:55" (3/3) ... [2022-11-02 20:24:55,419 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p15.c [2022-11-02 20:24:55,446 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:24:55,446 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:24:55,539 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:24:55,548 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;@5bf738ba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:24:55,548 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:24:55,553 INFO L276 IsEmpty]: Start isEmpty. Operand has 83 states, 81 states have (on average 1.4938271604938271) internal successors, (121), 82 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:55,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:24:55,560 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:24:55,561 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:24:55,562 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:24:55,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:55,569 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-02 20:24:55,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:24:55,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [848731564] [2022-11-02 20:24:55,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:55,586 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:24:55,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:24:55,592 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:24:55,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-02 20:24:55,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:55,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-02 20:24:55,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:24:56,154 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 20:24:56,154 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:24:56,155 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:24:56,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [848731564] [2022-11-02 20:24:56,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [848731564] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:24:56,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:24:56,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:24:56,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380818662] [2022-11-02 20:24:56,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:24:56,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:24:56,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:24:56,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:24:56,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:24:56,224 INFO L87 Difference]: Start difference. First operand has 83 states, 81 states have (on average 1.4938271604938271) internal successors, (121), 82 states have internal predecessors, (121), 0 states have call successors, (0), 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 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:56,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:24:56,474 INFO L93 Difference]: Finished difference Result 236 states and 354 transitions. [2022-11-02 20:24:56,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:24:56,478 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2022-11-02 20:24:56,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:24:56,490 INFO L225 Difference]: With dead ends: 236 [2022-11-02 20:24:56,490 INFO L226 Difference]: Without dead ends: 155 [2022-11-02 20:24:56,494 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 20:24:56,498 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 220 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:24:56,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 308 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:24:56,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2022-11-02 20:24:56,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 81. [2022-11-02 20:24:56,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.4625) internal successors, (117), 80 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:56,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 117 transitions. [2022-11-02 20:24:56,546 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 117 transitions. Word has length 5 [2022-11-02 20:24:56,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:24:56,547 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 117 transitions. [2022-11-02 20:24:56,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:56,547 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 117 transitions. [2022-11-02 20:24:56,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 20:24:56,550 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:24:56,550 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:24:56,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:24:56,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:24:56,765 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:24:56,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:56,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1926009885, now seen corresponding path program 1 times [2022-11-02 20:24:56,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:24:56,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1208896496] [2022-11-02 20:24:56,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:56,769 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:24:56,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:24:56,770 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:24:56,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-02 20:24:57,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:57,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:24:57,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:24:57,195 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:24:57,195 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:24:57,195 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:24:57,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1208896496] [2022-11-02 20:24:57,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1208896496] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:24:57,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:24:57,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:24:57,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094292407] [2022-11-02 20:24:57,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:24:57,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:24:57,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:24:57,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:24:57,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:24:57,201 INFO L87 Difference]: Start difference. First operand 81 states and 117 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:57,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:24:57,369 INFO L93 Difference]: Finished difference Result 307 states and 450 transitions. [2022-11-02 20:24:57,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:24:57,371 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-11-02 20:24:57,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:24:57,373 INFO L225 Difference]: With dead ends: 307 [2022-11-02 20:24:57,373 INFO L226 Difference]: Without dead ends: 230 [2022-11-02 20:24:57,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 77 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 20:24:57,376 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 324 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:24:57,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 402 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:24:57,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-02 20:24:57,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 83. [2022-11-02 20:24:57,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.451219512195122) internal successors, (119), 82 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:57,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 119 transitions. [2022-11-02 20:24:57,390 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 119 transitions. Word has length 80 [2022-11-02 20:24:57,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:24:57,391 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 119 transitions. [2022-11-02 20:24:57,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:57,392 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 119 transitions. [2022-11-02 20:24:57,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 20:24:57,394 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:24:57,394 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:24:57,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:24:57,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:24:57,613 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:24:57,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:57,614 INFO L85 PathProgramCache]: Analyzing trace with hash -634852961, now seen corresponding path program 1 times [2022-11-02 20:24:57,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:24:57,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [415833270] [2022-11-02 20:24:57,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:57,616 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:24:57,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:24:57,618 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:24:57,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-02 20:24:57,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:57,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:24:57,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:24:57,993 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:24:57,994 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:24:57,994 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:24:57,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [415833270] [2022-11-02 20:24:57,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [415833270] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:24:57,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:24:57,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:24:57,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433679680] [2022-11-02 20:24:57,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:24:57,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:24:57,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:24:57,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:24:57,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:24:57,998 INFO L87 Difference]: Start difference. First operand 83 states and 119 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:58,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:24:58,076 INFO L93 Difference]: Finished difference Result 307 states and 449 transitions. [2022-11-02 20:24:58,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:24:58,077 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-11-02 20:24:58,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:24:58,078 INFO L225 Difference]: With dead ends: 307 [2022-11-02 20:24:58,079 INFO L226 Difference]: Without dead ends: 230 [2022-11-02 20:24:58,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 77 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 20:24:58,081 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 313 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:24:58,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 419 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:24:58,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-02 20:24:58,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 87. [2022-11-02 20:24:58,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.441860465116279) internal successors, (124), 86 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:58,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 124 transitions. [2022-11-02 20:24:58,094 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 124 transitions. Word has length 80 [2022-11-02 20:24:58,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:24:58,095 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 124 transitions. [2022-11-02 20:24:58,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:58,095 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 124 transitions. [2022-11-02 20:24:58,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 20:24:58,098 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:24:58,098 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:24:58,121 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:24:58,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:24:58,315 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:24:58,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:58,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1602203615, now seen corresponding path program 1 times [2022-11-02 20:24:58,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:24:58,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [121673340] [2022-11-02 20:24:58,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:58,318 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:24:58,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:24:58,323 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:24:58,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-02 20:24:58,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:58,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:24:58,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:24:58,743 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:24:58,743 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:24:58,744 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:24:58,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [121673340] [2022-11-02 20:24:58,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [121673340] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:24:58,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:24:58,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:24:58,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636818806] [2022-11-02 20:24:58,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:24:58,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:24:58,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:24:58,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:24:58,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:24:58,748 INFO L87 Difference]: Start difference. First operand 87 states and 124 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:58,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:24:58,862 INFO L93 Difference]: Finished difference Result 312 states and 453 transitions. [2022-11-02 20:24:58,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:24:58,866 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-11-02 20:24:58,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:24:58,867 INFO L225 Difference]: With dead ends: 312 [2022-11-02 20:24:58,868 INFO L226 Difference]: Without dead ends: 235 [2022-11-02 20:24:58,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:24:58,870 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 422 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:24:58,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [422 Valid, 636 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:24:58,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2022-11-02 20:24:58,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 89. [2022-11-02 20:24:58,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.4318181818181819) internal successors, (126), 88 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:58,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 126 transitions. [2022-11-02 20:24:58,880 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 126 transitions. Word has length 80 [2022-11-02 20:24:58,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:24:58,881 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 126 transitions. [2022-11-02 20:24:58,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:58,881 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 126 transitions. [2022-11-02 20:24:58,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 20:24:58,883 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:24:58,883 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:24:58,918 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:24:59,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:24:59,104 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:24:59,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:59,104 INFO L85 PathProgramCache]: Analyzing trace with hash -2094829789, now seen corresponding path program 1 times [2022-11-02 20:24:59,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:24:59,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [342182558] [2022-11-02 20:24:59,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:59,106 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:24:59,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:24:59,111 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:24:59,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-02 20:24:59,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:24:59,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:24:59,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:24:59,476 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:24:59,477 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:24:59,477 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:24:59,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [342182558] [2022-11-02 20:24:59,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [342182558] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:24:59,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:24:59,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:24:59,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303875318] [2022-11-02 20:24:59,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:24:59,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:24:59,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:24:59,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:24:59,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:24:59,490 INFO L87 Difference]: Start difference. First operand 89 states and 126 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:59,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:24:59,566 INFO L93 Difference]: Finished difference Result 307 states and 447 transitions. [2022-11-02 20:24:59,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:24:59,567 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-11-02 20:24:59,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:24:59,569 INFO L225 Difference]: With dead ends: 307 [2022-11-02 20:24:59,569 INFO L226 Difference]: Without dead ends: 230 [2022-11-02 20:24:59,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 77 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 20:24:59,573 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 301 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:24:59,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [301 Valid, 417 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:24:59,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-02 20:24:59,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 91. [2022-11-02 20:24:59,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.4222222222222223) internal successors, (128), 90 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:59,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 128 transitions. [2022-11-02 20:24:59,608 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 128 transitions. Word has length 80 [2022-11-02 20:24:59,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:24:59,609 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 128 transitions. [2022-11-02 20:24:59,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:24:59,609 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 128 transitions. [2022-11-02 20:24:59,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 20:24:59,612 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:24:59,613 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:24:59,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:24:59,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:24:59,831 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:24:59,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:24:59,832 INFO L85 PathProgramCache]: Analyzing trace with hash 983983781, now seen corresponding path program 1 times [2022-11-02 20:24:59,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:24:59,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1560466601] [2022-11-02 20:24:59,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:24:59,833 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:24:59,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:24:59,834 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:24:59,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-02 20:25:00,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:00,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:25:00,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:25:00,201 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:25:00,202 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:25:00,202 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:25:00,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1560466601] [2022-11-02 20:25:00,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1560466601] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:00,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:00,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:25:00,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390085138] [2022-11-02 20:25:00,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:00,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:25:00,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:25:00,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:25:00,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:25:00,206 INFO L87 Difference]: Start difference. First operand 91 states and 128 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:00,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:00,273 INFO L93 Difference]: Finished difference Result 307 states and 446 transitions. [2022-11-02 20:25:00,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:25:00,274 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-11-02 20:25:00,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:00,275 INFO L225 Difference]: With dead ends: 307 [2022-11-02 20:25:00,276 INFO L226 Difference]: Without dead ends: 230 [2022-11-02 20:25:00,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 77 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 20:25:00,277 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 295 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:00,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 416 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:25:00,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-02 20:25:00,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 93. [2022-11-02 20:25:00,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.4130434782608696) internal successors, (130), 92 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:00,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 130 transitions. [2022-11-02 20:25:00,285 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 130 transitions. Word has length 80 [2022-11-02 20:25:00,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:00,285 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 130 transitions. [2022-11-02 20:25:00,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:00,286 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 130 transitions. [2022-11-02 20:25:00,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 20:25:00,287 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:00,287 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:25:00,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:25:00,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:25:00,504 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:00,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:00,505 INFO L85 PathProgramCache]: Analyzing trace with hash -702196057, now seen corresponding path program 1 times [2022-11-02 20:25:00,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:25:00,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1436088125] [2022-11-02 20:25:00,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:00,506 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:25:00,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:25:00,507 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:25:00,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-02 20:25:00,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:00,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:25:00,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:25:00,878 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:25:00,878 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:25:00,879 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:25:00,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1436088125] [2022-11-02 20:25:00,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1436088125] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:00,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:00,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:25:00,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524650269] [2022-11-02 20:25:00,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:00,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:25:00,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:25:00,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:25:00,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:25:00,882 INFO L87 Difference]: Start difference. First operand 93 states and 130 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:01,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:01,013 INFO L93 Difference]: Finished difference Result 307 states and 445 transitions. [2022-11-02 20:25:01,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:25:01,014 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-11-02 20:25:01,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:01,015 INFO L225 Difference]: With dead ends: 307 [2022-11-02 20:25:01,015 INFO L226 Difference]: Without dead ends: 230 [2022-11-02 20:25:01,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 77 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 20:25:01,017 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 289 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:01,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 397 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:25:01,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-02 20:25:01,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 95. [2022-11-02 20:25:01,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.4042553191489362) internal successors, (132), 94 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:01,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 132 transitions. [2022-11-02 20:25:01,024 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 132 transitions. Word has length 80 [2022-11-02 20:25:01,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:01,024 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 132 transitions. [2022-11-02 20:25:01,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:01,025 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 132 transitions. [2022-11-02 20:25:01,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 20:25:01,026 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:01,026 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:25:01,045 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-11-02 20:25:01,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:25:01,243 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:01,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:01,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1119592663, now seen corresponding path program 1 times [2022-11-02 20:25:01,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:25:01,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [567661009] [2022-11-02 20:25:01,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:01,244 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:25:01,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:25:01,245 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:25:01,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-02 20:25:01,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:01,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:25:01,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:25:01,616 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:25:01,617 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:25:01,617 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:25:01,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [567661009] [2022-11-02 20:25:01,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [567661009] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:01,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:01,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:25:01,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176434184] [2022-11-02 20:25:01,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:01,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:25:01,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:25:01,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:25:01,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:25:01,620 INFO L87 Difference]: Start difference. First operand 95 states and 132 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:01,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:01,734 INFO L93 Difference]: Finished difference Result 312 states and 449 transitions. [2022-11-02 20:25:01,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:25:01,735 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-11-02 20:25:01,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:01,737 INFO L225 Difference]: With dead ends: 312 [2022-11-02 20:25:01,737 INFO L226 Difference]: Without dead ends: 235 [2022-11-02 20:25:01,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:25:01,739 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 394 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 620 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:01,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [394 Valid, 620 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:25:01,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2022-11-02 20:25:01,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 97. [2022-11-02 20:25:01,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.3958333333333333) internal successors, (134), 96 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:01,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 134 transitions. [2022-11-02 20:25:01,752 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 134 transitions. Word has length 80 [2022-11-02 20:25:01,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:01,753 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 134 transitions. [2022-11-02 20:25:01,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:01,753 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 134 transitions. [2022-11-02 20:25:01,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 20:25:01,760 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:01,760 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:25:01,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-02 20:25:01,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:25:01,974 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:01,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:01,974 INFO L85 PathProgramCache]: Analyzing trace with hash 841981995, now seen corresponding path program 1 times [2022-11-02 20:25:01,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:25:01,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [610984322] [2022-11-02 20:25:01,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:01,975 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:25:01,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:25:01,976 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:25:01,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-02 20:25:02,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:02,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:25:02,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:25:02,348 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:25:02,348 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:25:02,349 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:25:02,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [610984322] [2022-11-02 20:25:02,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [610984322] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:02,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:02,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:25:02,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763395377] [2022-11-02 20:25:02,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:02,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:25:02,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:25:02,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:25:02,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:25:02,353 INFO L87 Difference]: Start difference. First operand 97 states and 134 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:02,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:02,463 INFO L93 Difference]: Finished difference Result 312 states and 448 transitions. [2022-11-02 20:25:02,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:25:02,464 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-11-02 20:25:02,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:02,465 INFO L225 Difference]: With dead ends: 312 [2022-11-02 20:25:02,466 INFO L226 Difference]: Without dead ends: 235 [2022-11-02 20:25:02,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:25:02,470 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 382 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:02,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 613 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:25:02,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2022-11-02 20:25:02,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 101. [2022-11-02 20:25:02,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.39) internal successors, (139), 100 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:02,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 139 transitions. [2022-11-02 20:25:02,476 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 139 transitions. Word has length 80 [2022-11-02 20:25:02,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:02,479 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 139 transitions. [2022-11-02 20:25:02,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:02,479 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 139 transitions. [2022-11-02 20:25:02,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 20:25:02,481 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:02,481 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:25:02,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-02 20:25:02,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:25:02,705 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:02,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:02,705 INFO L85 PathProgramCache]: Analyzing trace with hash 2102899245, now seen corresponding path program 1 times [2022-11-02 20:25:02,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:25:02,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1853559385] [2022-11-02 20:25:02,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:02,707 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:25:02,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:25:02,708 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:25:02,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-02 20:25:02,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:02,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:25:02,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:25:03,053 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:25:03,054 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:25:03,054 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:25:03,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1853559385] [2022-11-02 20:25:03,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1853559385] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:03,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:03,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:25:03,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767489089] [2022-11-02 20:25:03,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:03,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:25:03,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:25:03,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:25:03,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:25:03,057 INFO L87 Difference]: Start difference. First operand 101 states and 139 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:03,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:03,145 INFO L93 Difference]: Finished difference Result 307 states and 442 transitions. [2022-11-02 20:25:03,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:25:03,145 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-11-02 20:25:03,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:03,147 INFO L225 Difference]: With dead ends: 307 [2022-11-02 20:25:03,147 INFO L226 Difference]: Without dead ends: 230 [2022-11-02 20:25:03,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 77 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 20:25:03,148 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 266 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:03,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 412 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:25:03,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-02 20:25:03,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 103. [2022-11-02 20:25:03,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 1.3823529411764706) internal successors, (141), 102 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:03,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 141 transitions. [2022-11-02 20:25:03,155 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 141 transitions. Word has length 80 [2022-11-02 20:25:03,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:03,156 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 141 transitions. [2022-11-02 20:25:03,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:03,156 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 141 transitions. [2022-11-02 20:25:03,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 20:25:03,158 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:03,158 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:25:03,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-02 20:25:03,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:25:03,375 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:03,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:03,376 INFO L85 PathProgramCache]: Analyzing trace with hash -805282641, now seen corresponding path program 1 times [2022-11-02 20:25:03,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:25:03,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1340721300] [2022-11-02 20:25:03,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:03,377 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:25:03,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:25:03,379 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:25:03,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-02 20:25:03,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:03,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:25:03,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:25:03,720 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:25:03,720 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:25:03,720 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:25:03,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1340721300] [2022-11-02 20:25:03,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1340721300] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:03,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:03,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:25:03,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074074191] [2022-11-02 20:25:03,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:03,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:25:03,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:25:03,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:25:03,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:25:03,723 INFO L87 Difference]: Start difference. First operand 103 states and 141 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:03,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:03,806 INFO L93 Difference]: Finished difference Result 307 states and 441 transitions. [2022-11-02 20:25:03,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:25:03,807 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-11-02 20:25:03,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:03,808 INFO L225 Difference]: With dead ends: 307 [2022-11-02 20:25:03,809 INFO L226 Difference]: Without dead ends: 230 [2022-11-02 20:25:03,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 77 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 20:25:03,810 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 260 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:03,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 411 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:25:03,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-02 20:25:03,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 105. [2022-11-02 20:25:03,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 1.375) internal successors, (143), 104 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:03,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 143 transitions. [2022-11-02 20:25:03,815 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 143 transitions. Word has length 80 [2022-11-02 20:25:03,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:03,816 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 143 transitions. [2022-11-02 20:25:03,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:03,816 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 143 transitions. [2022-11-02 20:25:03,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 20:25:03,817 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:03,817 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:25:03,842 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-02 20:25:04,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:25:04,018 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:04,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:04,019 INFO L85 PathProgramCache]: Analyzing trace with hash -361381967, now seen corresponding path program 1 times [2022-11-02 20:25:04,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:25:04,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1958812518] [2022-11-02 20:25:04,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:04,020 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:25:04,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:25:04,022 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:25:04,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-02 20:25:04,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:04,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:25:04,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:25:04,375 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:25:04,375 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:25:04,376 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:25:04,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1958812518] [2022-11-02 20:25:04,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1958812518] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:04,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:04,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:25:04,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134160969] [2022-11-02 20:25:04,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:04,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:25:04,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:25:04,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:25:04,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:25:04,379 INFO L87 Difference]: Start difference. First operand 105 states and 143 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:04,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:04,419 INFO L93 Difference]: Finished difference Result 307 states and 440 transitions. [2022-11-02 20:25:04,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:25:04,420 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-11-02 20:25:04,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:04,422 INFO L225 Difference]: With dead ends: 307 [2022-11-02 20:25:04,422 INFO L226 Difference]: Without dead ends: 230 [2022-11-02 20:25:04,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 77 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 20:25:04,423 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 254 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:04,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 431 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:25:04,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-02 20:25:04,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 107. [2022-11-02 20:25:04,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 1.3679245283018868) internal successors, (145), 106 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:04,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 145 transitions. [2022-11-02 20:25:04,430 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 145 transitions. Word has length 80 [2022-11-02 20:25:04,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:04,431 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 145 transitions. [2022-11-02 20:25:04,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:04,431 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 145 transitions. [2022-11-02 20:25:04,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 20:25:04,432 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:04,433 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:25:04,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-02 20:25:04,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:25:04,648 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:04,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:04,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1904999219, now seen corresponding path program 1 times [2022-11-02 20:25:04,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:25:04,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [430541652] [2022-11-02 20:25:04,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:04,649 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:25:04,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:25:04,650 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:25:04,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-02 20:25:04,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:04,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:25:04,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:25:05,010 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:25:05,011 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:25:05,011 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:25:05,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [430541652] [2022-11-02 20:25:05,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [430541652] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:05,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:05,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:25:05,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059654132] [2022-11-02 20:25:05,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:05,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:25:05,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:25:05,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:25:05,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:25:05,014 INFO L87 Difference]: Start difference. First operand 107 states and 145 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:05,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:05,050 INFO L93 Difference]: Finished difference Result 307 states and 439 transitions. [2022-11-02 20:25:05,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:25:05,051 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-11-02 20:25:05,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:05,053 INFO L225 Difference]: With dead ends: 307 [2022-11-02 20:25:05,053 INFO L226 Difference]: Without dead ends: 230 [2022-11-02 20:25:05,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 77 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 20:25:05,055 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 248 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:05,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 430 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:25:05,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-02 20:25:05,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 109. [2022-11-02 20:25:05,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.3611111111111112) internal successors, (147), 108 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:05,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 147 transitions. [2022-11-02 20:25:05,062 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 147 transitions. Word has length 80 [2022-11-02 20:25:05,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:05,062 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 147 transitions. [2022-11-02 20:25:05,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:05,063 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 147 transitions. [2022-11-02 20:25:05,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 20:25:05,064 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:05,064 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:25:05,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-02 20:25:05,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:25:05,278 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:05,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:05,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1889480501, now seen corresponding path program 1 times [2022-11-02 20:25:05,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:25:05,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1275380867] [2022-11-02 20:25:05,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:05,279 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:25:05,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:25:05,281 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:25:05,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-02 20:25:05,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:05,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:25:05,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:25:05,653 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:25:05,653 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:25:05,653 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:25:05,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1275380867] [2022-11-02 20:25:05,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1275380867] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:05,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:05,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:25:05,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386775481] [2022-11-02 20:25:05,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:05,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:25:05,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:25:05,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:25:05,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:25:05,657 INFO L87 Difference]: Start difference. First operand 109 states and 147 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:05,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:05,701 INFO L93 Difference]: Finished difference Result 307 states and 438 transitions. [2022-11-02 20:25:05,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:25:05,702 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-11-02 20:25:05,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:05,703 INFO L225 Difference]: With dead ends: 307 [2022-11-02 20:25:05,703 INFO L226 Difference]: Without dead ends: 230 [2022-11-02 20:25:05,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 77 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 20:25:05,705 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 237 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:05,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 426 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:25:05,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-02 20:25:05,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 113. [2022-11-02 20:25:05,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.3571428571428572) internal successors, (152), 112 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:05,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 152 transitions. [2022-11-02 20:25:05,711 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 152 transitions. Word has length 80 [2022-11-02 20:25:05,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:05,712 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 152 transitions. [2022-11-02 20:25:05,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:05,712 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 152 transitions. [2022-11-02 20:25:05,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 20:25:05,713 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:05,714 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:25:05,738 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-02 20:25:05,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:25:05,932 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:05,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:05,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1512000457, now seen corresponding path program 1 times [2022-11-02 20:25:05,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:25:05,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1303910325] [2022-11-02 20:25:05,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:05,933 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:25:05,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:25:05,934 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:25:05,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-02 20:25:06,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:06,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:25:06,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:25:06,322 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:25:06,322 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:25:06,322 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:25:06,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1303910325] [2022-11-02 20:25:06,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1303910325] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:06,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:06,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:25:06,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459419252] [2022-11-02 20:25:06,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:06,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:25:06,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:25:06,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:25:06,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:25:06,327 INFO L87 Difference]: Start difference. First operand 113 states and 152 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:06,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:06,391 INFO L93 Difference]: Finished difference Result 307 states and 437 transitions. [2022-11-02 20:25:06,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:25:06,392 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-11-02 20:25:06,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:06,394 INFO L225 Difference]: With dead ends: 307 [2022-11-02 20:25:06,394 INFO L226 Difference]: Without dead ends: 230 [2022-11-02 20:25:06,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 77 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 20:25:06,399 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 231 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:06,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 425 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:25:06,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-02 20:25:06,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 115. [2022-11-02 20:25:06,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.3508771929824561) internal successors, (154), 114 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:06,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 154 transitions. [2022-11-02 20:25:06,410 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 154 transitions. Word has length 80 [2022-11-02 20:25:06,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:06,410 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 154 transitions. [2022-11-02 20:25:06,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:06,411 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 154 transitions. [2022-11-02 20:25:06,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 20:25:06,412 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:06,412 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:25:06,431 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-02 20:25:06,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:25:06,626 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:06,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:06,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1885573561, now seen corresponding path program 1 times [2022-11-02 20:25:06,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:25:06,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1061868368] [2022-11-02 20:25:06,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:06,627 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:25:06,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:25:06,629 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:25:06,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-02 20:25:06,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:06,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:25:06,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:25:07,116 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:25:07,117 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:25:07,117 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:25:07,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1061868368] [2022-11-02 20:25:07,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1061868368] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:07,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:07,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:25:07,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417922098] [2022-11-02 20:25:07,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:07,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:25:07,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:25:07,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:25:07,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:25:07,120 INFO L87 Difference]: Start difference. First operand 115 states and 154 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:07,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:07,252 INFO L93 Difference]: Finished difference Result 270 states and 381 transitions. [2022-11-02 20:25:07,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:25:07,262 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-11-02 20:25:07,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:07,263 INFO L225 Difference]: With dead ends: 270 [2022-11-02 20:25:07,263 INFO L226 Difference]: Without dead ends: 193 [2022-11-02 20:25:07,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:25:07,265 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 281 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:07,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 448 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:25:07,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2022-11-02 20:25:07,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 117. [2022-11-02 20:25:07,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 116 states have (on average 1.3448275862068966) internal successors, (156), 116 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:07,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 156 transitions. [2022-11-02 20:25:07,271 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 156 transitions. Word has length 80 [2022-11-02 20:25:07,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:07,271 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 156 transitions. [2022-11-02 20:25:07,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:07,272 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 156 transitions. [2022-11-02 20:25:07,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 20:25:07,273 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:07,273 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:25:07,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-02 20:25:07,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:25:07,490 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:07,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:07,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1461926839, now seen corresponding path program 1 times [2022-11-02 20:25:07,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:25:07,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1860740620] [2022-11-02 20:25:07,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:07,491 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:25:07,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:25:07,493 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:25:07,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-02 20:25:07,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:07,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:25:07,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:25:07,877 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:25:07,877 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:25:07,878 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:25:07,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1860740620] [2022-11-02 20:25:07,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1860740620] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:07,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:07,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:25:07,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205980226] [2022-11-02 20:25:07,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:07,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:25:07,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:25:07,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:25:07,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:25:07,881 INFO L87 Difference]: Start difference. First operand 117 states and 156 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:07,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:07,937 INFO L93 Difference]: Finished difference Result 307 states and 435 transitions. [2022-11-02 20:25:07,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:25:07,938 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-11-02 20:25:07,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:07,939 INFO L225 Difference]: With dead ends: 307 [2022-11-02 20:25:07,939 INFO L226 Difference]: Without dead ends: 230 [2022-11-02 20:25:07,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 77 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 20:25:07,941 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 219 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:07,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 417 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:25:07,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-02 20:25:07,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 119. [2022-11-02 20:25:07,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.3389830508474576) internal successors, (158), 118 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:07,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 158 transitions. [2022-11-02 20:25:07,947 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 158 transitions. Word has length 80 [2022-11-02 20:25:07,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:07,947 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 158 transitions. [2022-11-02 20:25:07,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:07,948 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 158 transitions. [2022-11-02 20:25:07,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 20:25:07,949 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:07,949 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:25:07,973 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-02 20:25:08,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:25:08,162 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:08,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:08,163 INFO L85 PathProgramCache]: Analyzing trace with hash -383440327, now seen corresponding path program 1 times [2022-11-02 20:25:08,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:25:08,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [278935764] [2022-11-02 20:25:08,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:08,164 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:25:08,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:25:08,165 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:25:08,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-02 20:25:08,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:08,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:25:08,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:25:08,545 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:25:08,546 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:25:08,546 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:25:08,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [278935764] [2022-11-02 20:25:08,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [278935764] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:08,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:08,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:25:08,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316448428] [2022-11-02 20:25:08,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:08,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:25:08,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:25:08,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:25:08,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:25:08,549 INFO L87 Difference]: Start difference. First operand 119 states and 158 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:08,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:08,598 INFO L93 Difference]: Finished difference Result 307 states and 434 transitions. [2022-11-02 20:25:08,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:25:08,599 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-11-02 20:25:08,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:08,600 INFO L225 Difference]: With dead ends: 307 [2022-11-02 20:25:08,600 INFO L226 Difference]: Without dead ends: 230 [2022-11-02 20:25:08,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 77 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 20:25:08,602 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 213 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:08,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 422 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:25:08,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-02 20:25:08,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 121. [2022-11-02 20:25:08,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.3333333333333333) internal successors, (160), 120 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:08,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 160 transitions. [2022-11-02 20:25:08,608 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 160 transitions. Word has length 80 [2022-11-02 20:25:08,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:08,609 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 160 transitions. [2022-11-02 20:25:08,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:08,609 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 160 transitions. [2022-11-02 20:25:08,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 20:25:08,610 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:08,610 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:25:08,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-02 20:25:08,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:25:08,822 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:08,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:08,822 INFO L85 PathProgramCache]: Analyzing trace with hash 276091195, now seen corresponding path program 1 times [2022-11-02 20:25:08,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:25:08,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1929193058] [2022-11-02 20:25:08,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:08,823 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:25:08,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:25:08,824 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:25:08,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-02 20:25:09,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:09,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:25:09,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:25:09,242 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:25:09,243 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:25:09,243 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:25:09,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1929193058] [2022-11-02 20:25:09,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1929193058] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:09,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:09,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:25:09,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620945112] [2022-11-02 20:25:09,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:09,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:25:09,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:25:09,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:25:09,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:25:09,247 INFO L87 Difference]: Start difference. First operand 121 states and 160 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:09,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:09,304 INFO L93 Difference]: Finished difference Result 307 states and 433 transitions. [2022-11-02 20:25:09,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:25:09,305 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-11-02 20:25:09,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:09,306 INFO L225 Difference]: With dead ends: 307 [2022-11-02 20:25:09,307 INFO L226 Difference]: Without dead ends: 230 [2022-11-02 20:25:09,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 77 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 20:25:09,308 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 202 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:09,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 415 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:25:09,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-02 20:25:09,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 125. [2022-11-02 20:25:09,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 1.3306451612903225) internal successors, (165), 124 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:09,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 165 transitions. [2022-11-02 20:25:09,314 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 165 transitions. Word has length 80 [2022-11-02 20:25:09,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:09,315 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 165 transitions. [2022-11-02 20:25:09,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:09,315 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 165 transitions. [2022-11-02 20:25:09,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 20:25:09,316 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:09,316 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:25:09,344 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-02 20:25:09,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:25:09,534 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:09,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:09,535 INFO L85 PathProgramCache]: Analyzing trace with hash 203704637, now seen corresponding path program 1 times [2022-11-02 20:25:09,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:25:09,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [766530854] [2022-11-02 20:25:09,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:09,536 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:25:09,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:25:09,537 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:25:09,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-02 20:25:09,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:09,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:25:09,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:25:09,896 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:25:09,896 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:25:09,896 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:25:09,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [766530854] [2022-11-02 20:25:09,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [766530854] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:09,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:09,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:25:09,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942050103] [2022-11-02 20:25:09,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:09,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:25:09,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:25:09,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:25:09,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:25:09,899 INFO L87 Difference]: Start difference. First operand 125 states and 165 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:09,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:09,954 INFO L93 Difference]: Finished difference Result 307 states and 432 transitions. [2022-11-02 20:25:09,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:25:09,955 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-11-02 20:25:09,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:09,956 INFO L225 Difference]: With dead ends: 307 [2022-11-02 20:25:09,956 INFO L226 Difference]: Without dead ends: 230 [2022-11-02 20:25:09,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 77 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 20:25:09,958 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 196 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:09,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 414 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:25:09,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-02 20:25:09,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 127. [2022-11-02 20:25:09,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.3253968253968254) internal successors, (167), 126 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:09,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 167 transitions. [2022-11-02 20:25:09,964 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 167 transitions. Word has length 80 [2022-11-02 20:25:09,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:09,965 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 167 transitions. [2022-11-02 20:25:09,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:09,965 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 167 transitions. [2022-11-02 20:25:09,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 20:25:09,966 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:09,967 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:25:09,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-02 20:25:10,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:25:10,182 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:10,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:10,182 INFO L85 PathProgramCache]: Analyzing trace with hash 905304511, now seen corresponding path program 1 times [2022-11-02 20:25:10,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:25:10,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1948209889] [2022-11-02 20:25:10,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:10,183 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:25:10,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:25:10,184 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:25:10,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-02 20:25:10,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:10,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:25:10,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:25:10,591 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:25:10,591 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:25:10,591 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:25:10,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1948209889] [2022-11-02 20:25:10,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1948209889] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:10,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:10,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:25:10,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233559971] [2022-11-02 20:25:10,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:10,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:25:10,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:25:10,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:25:10,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:25:10,595 INFO L87 Difference]: Start difference. First operand 127 states and 167 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:10,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:10,644 INFO L93 Difference]: Finished difference Result 307 states and 431 transitions. [2022-11-02 20:25:10,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:25:10,654 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-11-02 20:25:10,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:10,656 INFO L225 Difference]: With dead ends: 307 [2022-11-02 20:25:10,656 INFO L226 Difference]: Without dead ends: 230 [2022-11-02 20:25:10,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 77 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 20:25:10,658 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 190 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:10,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 422 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:25:10,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-02 20:25:10,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 129. [2022-11-02 20:25:10,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 128 states have (on average 1.3203125) internal successors, (169), 128 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:10,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 169 transitions. [2022-11-02 20:25:10,663 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 169 transitions. Word has length 80 [2022-11-02 20:25:10,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:10,664 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 169 transitions. [2022-11-02 20:25:10,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:10,664 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 169 transitions. [2022-11-02 20:25:10,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 20:25:10,665 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:10,665 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:25:10,683 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-02 20:25:10,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:25:10,883 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:10,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:10,883 INFO L85 PathProgramCache]: Analyzing trace with hash -2003459391, now seen corresponding path program 1 times [2022-11-02 20:25:10,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:25:10,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1331795440] [2022-11-02 20:25:10,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:10,884 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:25:10,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:25:10,885 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:25:10,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-02 20:25:11,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:11,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:25:11,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:25:11,250 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:25:11,251 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:25:11,251 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:25:11,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1331795440] [2022-11-02 20:25:11,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1331795440] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:11,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:11,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:25:11,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931231407] [2022-11-02 20:25:11,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:11,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:25:11,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:25:11,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:25:11,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:25:11,254 INFO L87 Difference]: Start difference. First operand 129 states and 169 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:11,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:11,310 INFO L93 Difference]: Finished difference Result 307 states and 430 transitions. [2022-11-02 20:25:11,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:25:11,311 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-11-02 20:25:11,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:11,313 INFO L225 Difference]: With dead ends: 307 [2022-11-02 20:25:11,313 INFO L226 Difference]: Without dead ends: 230 [2022-11-02 20:25:11,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 77 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 20:25:11,317 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 174 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:11,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 418 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:25:11,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-02 20:25:11,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 135. [2022-11-02 20:25:11,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 134 states have (on average 1.3208955223880596) internal successors, (177), 134 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:11,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 177 transitions. [2022-11-02 20:25:11,324 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 177 transitions. Word has length 80 [2022-11-02 20:25:11,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:11,324 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 177 transitions. [2022-11-02 20:25:11,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:11,325 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 177 transitions. [2022-11-02 20:25:11,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 20:25:11,326 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:11,326 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:25:11,344 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2022-11-02 20:25:11,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:25:11,544 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:11,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:11,544 INFO L85 PathProgramCache]: Analyzing trace with hash 486069571, now seen corresponding path program 1 times [2022-11-02 20:25:11,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:25:11,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [867302136] [2022-11-02 20:25:11,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:11,545 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:25:11,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:25:11,546 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:25:11,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-02 20:25:11,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:11,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:25:11,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:25:11,917 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:25:11,917 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:25:11,918 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:25:11,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [867302136] [2022-11-02 20:25:11,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [867302136] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:11,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:11,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:25:11,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618269748] [2022-11-02 20:25:11,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:11,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:25:11,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:25:11,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:25:11,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:25:11,920 INFO L87 Difference]: Start difference. First operand 135 states and 177 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:11,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:11,968 INFO L93 Difference]: Finished difference Result 307 states and 429 transitions. [2022-11-02 20:25:11,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:25:11,969 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-11-02 20:25:11,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:11,970 INFO L225 Difference]: With dead ends: 307 [2022-11-02 20:25:11,970 INFO L226 Difference]: Without dead ends: 230 [2022-11-02 20:25:11,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 77 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 20:25:11,971 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 168 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:11,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 417 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:25:11,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-02 20:25:11,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 137. [2022-11-02 20:25:11,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 136 states have (on average 1.3161764705882353) internal successors, (179), 136 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:11,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 179 transitions. [2022-11-02 20:25:11,978 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 179 transitions. Word has length 80 [2022-11-02 20:25:11,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:11,979 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 179 transitions. [2022-11-02 20:25:11,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:11,979 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 179 transitions. [2022-11-02 20:25:11,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 20:25:11,980 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:11,980 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:25:11,996 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2022-11-02 20:25:12,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:25:12,190 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:12,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:12,190 INFO L85 PathProgramCache]: Analyzing trace with hash 908771397, now seen corresponding path program 1 times [2022-11-02 20:25:12,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:25:12,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2130240277] [2022-11-02 20:25:12,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:12,191 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:25:12,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:25:12,193 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:25:12,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-02 20:25:12,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:12,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:25:12,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:25:12,578 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:25:12,578 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:25:12,578 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:25:12,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2130240277] [2022-11-02 20:25:12,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2130240277] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:12,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:12,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:25:12,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036194433] [2022-11-02 20:25:12,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:12,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:25:12,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:25:12,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:25:12,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:25:12,580 INFO L87 Difference]: Start difference. First operand 137 states and 179 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:12,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:12,643 INFO L93 Difference]: Finished difference Result 307 states and 428 transitions. [2022-11-02 20:25:12,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:25:12,644 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-11-02 20:25:12,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:12,646 INFO L225 Difference]: With dead ends: 307 [2022-11-02 20:25:12,646 INFO L226 Difference]: Without dead ends: 230 [2022-11-02 20:25:12,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 77 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 20:25:12,648 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 162 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:12,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 416 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:25:12,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-02 20:25:12,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 139. [2022-11-02 20:25:12,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 138 states have (on average 1.3115942028985508) internal successors, (181), 138 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:12,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 181 transitions. [2022-11-02 20:25:12,655 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 181 transitions. Word has length 80 [2022-11-02 20:25:12,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:12,656 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 181 transitions. [2022-11-02 20:25:12,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:12,656 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 181 transitions. [2022-11-02 20:25:12,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 20:25:12,657 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:12,658 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:25:12,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-02 20:25:12,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:25:12,875 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:12,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:12,876 INFO L85 PathProgramCache]: Analyzing trace with hash -780172345, now seen corresponding path program 1 times [2022-11-02 20:25:12,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:25:12,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1982189027] [2022-11-02 20:25:12,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:12,877 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:25:12,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:25:12,878 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:25:12,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-02 20:25:13,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:13,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:25:13,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:25:13,251 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:25:13,251 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:25:13,252 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:25:13,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1982189027] [2022-11-02 20:25:13,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1982189027] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:13,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:13,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:25:13,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196248250] [2022-11-02 20:25:13,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:13,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:25:13,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:25:13,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:25:13,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:25:13,254 INFO L87 Difference]: Start difference. First operand 139 states and 181 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:13,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:13,296 INFO L93 Difference]: Finished difference Result 307 states and 427 transitions. [2022-11-02 20:25:13,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:25:13,300 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-11-02 20:25:13,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:13,302 INFO L225 Difference]: With dead ends: 307 [2022-11-02 20:25:13,303 INFO L226 Difference]: Without dead ends: 230 [2022-11-02 20:25:13,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 77 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 20:25:13,304 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 151 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:13,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 415 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:25:13,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-02 20:25:13,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 143. [2022-11-02 20:25:13,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.3098591549295775) internal successors, (186), 142 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:13,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 186 transitions. [2022-11-02 20:25:13,310 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 186 transitions. Word has length 80 [2022-11-02 20:25:13,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:13,311 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 186 transitions. [2022-11-02 20:25:13,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:13,311 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 186 transitions. [2022-11-02 20:25:13,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 20:25:13,312 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:13,312 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:25:13,328 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (26)] Ended with exit code 0 [2022-11-02 20:25:13,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:25:13,522 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:13,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:13,522 INFO L85 PathProgramCache]: Analyzing trace with hash -2060036023, now seen corresponding path program 1 times [2022-11-02 20:25:13,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:25:13,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [100798116] [2022-11-02 20:25:13,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:13,523 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:25:13,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:25:13,524 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:25:13,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-02 20:25:13,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:13,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:25:13,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:25:13,932 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:25:13,932 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:25:13,933 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:25:13,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [100798116] [2022-11-02 20:25:13,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [100798116] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:13,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:13,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:25:13,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962363481] [2022-11-02 20:25:13,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:13,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:25:13,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:25:13,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:25:13,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:25:13,936 INFO L87 Difference]: Start difference. First operand 143 states and 186 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:13,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:13,976 INFO L93 Difference]: Finished difference Result 307 states and 426 transitions. [2022-11-02 20:25:13,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:25:13,980 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-11-02 20:25:13,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:13,981 INFO L225 Difference]: With dead ends: 307 [2022-11-02 20:25:13,981 INFO L226 Difference]: Without dead ends: 230 [2022-11-02 20:25:13,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 77 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 20:25:13,983 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 145 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:13,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 414 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:25:13,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-02 20:25:13,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 145. [2022-11-02 20:25:13,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.3055555555555556) internal successors, (188), 144 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:13,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 188 transitions. [2022-11-02 20:25:13,990 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 188 transitions. Word has length 80 [2022-11-02 20:25:13,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:13,991 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 188 transitions. [2022-11-02 20:25:13,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:13,991 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 188 transitions. [2022-11-02 20:25:13,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 20:25:13,992 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:13,992 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:25:14,010 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-11-02 20:25:14,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:25:14,206 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:14,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:14,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1648125259, now seen corresponding path program 1 times [2022-11-02 20:25:14,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:25:14,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1232397943] [2022-11-02 20:25:14,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:14,207 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:25:14,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:25:14,208 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:25:14,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-02 20:25:14,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:14,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:25:14,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:25:14,615 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:25:14,616 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:25:14,616 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:25:14,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1232397943] [2022-11-02 20:25:14,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1232397943] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:14,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:14,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:25:14,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234896080] [2022-11-02 20:25:14,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:14,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:25:14,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:25:14,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:25:14,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:25:14,619 INFO L87 Difference]: Start difference. First operand 145 states and 188 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:14,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:14,668 INFO L93 Difference]: Finished difference Result 307 states and 425 transitions. [2022-11-02 20:25:14,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:25:14,668 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-11-02 20:25:14,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:14,670 INFO L225 Difference]: With dead ends: 307 [2022-11-02 20:25:14,670 INFO L226 Difference]: Without dead ends: 230 [2022-11-02 20:25:14,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 77 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 20:25:14,672 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 139 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:14,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 413 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:25:14,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-02 20:25:14,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 147. [2022-11-02 20:25:14,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 1.3013698630136987) internal successors, (190), 146 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:14,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 190 transitions. [2022-11-02 20:25:14,679 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 190 transitions. Word has length 80 [2022-11-02 20:25:14,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:14,680 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 190 transitions. [2022-11-02 20:25:14,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:14,680 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 190 transitions. [2022-11-02 20:25:14,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 20:25:14,681 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:14,681 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:25:14,701 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-11-02 20:25:14,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:25:14,899 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:14,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:14,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1945777459, now seen corresponding path program 1 times [2022-11-02 20:25:14,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:25:14,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1334733622] [2022-11-02 20:25:14,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:14,901 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:25:14,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:25:14,902 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:25:14,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-02 20:25:15,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:15,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:25:15,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:25:15,370 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:25:15,371 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:25:15,371 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:25:15,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1334733622] [2022-11-02 20:25:15,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1334733622] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:15,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:15,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:25:15,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269444746] [2022-11-02 20:25:15,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:15,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:25:15,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:25:15,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:25:15,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:25:15,375 INFO L87 Difference]: Start difference. First operand 147 states and 190 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:15,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:15,449 INFO L93 Difference]: Finished difference Result 307 states and 424 transitions. [2022-11-02 20:25:15,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:25:15,450 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-11-02 20:25:15,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:15,452 INFO L225 Difference]: With dead ends: 307 [2022-11-02 20:25:15,452 INFO L226 Difference]: Without dead ends: 230 [2022-11-02 20:25:15,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 77 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 20:25:15,454 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 128 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:15,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 394 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:25:15,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-02 20:25:15,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 151. [2022-11-02 20:25:15,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 150 states have (on average 1.3) internal successors, (195), 150 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:15,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 195 transitions. [2022-11-02 20:25:15,480 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 195 transitions. Word has length 80 [2022-11-02 20:25:15,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:15,481 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 195 transitions. [2022-11-02 20:25:15,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:15,482 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 195 transitions. [2022-11-02 20:25:15,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 20:25:15,483 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:15,483 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:25:15,507 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-11-02 20:25:15,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:25:15,698 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:15,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:15,698 INFO L85 PathProgramCache]: Analyzing trace with hash -170770097, now seen corresponding path program 1 times [2022-11-02 20:25:15,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:25:15,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [504502773] [2022-11-02 20:25:15,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:15,699 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:25:15,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:25:15,700 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:25:15,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-02 20:25:15,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:15,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:25:15,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:25:16,097 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:25:16,097 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:25:16,097 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:25:16,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [504502773] [2022-11-02 20:25:16,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [504502773] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:16,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:16,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:25:16,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981246024] [2022-11-02 20:25:16,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:16,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:25:16,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:25:16,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:25:16,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:25:16,100 INFO L87 Difference]: Start difference. First operand 151 states and 195 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:16,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:16,168 INFO L93 Difference]: Finished difference Result 307 states and 423 transitions. [2022-11-02 20:25:16,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:25:16,169 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-11-02 20:25:16,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:16,170 INFO L225 Difference]: With dead ends: 307 [2022-11-02 20:25:16,171 INFO L226 Difference]: Without dead ends: 230 [2022-11-02 20:25:16,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 77 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 20:25:16,172 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 122 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:16,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 393 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:25:16,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-02 20:25:16,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 153. [2022-11-02 20:25:16,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 152 states have (on average 1.2960526315789473) internal successors, (197), 152 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:16,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 197 transitions. [2022-11-02 20:25:16,179 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 197 transitions. Word has length 80 [2022-11-02 20:25:16,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:16,179 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 197 transitions. [2022-11-02 20:25:16,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:16,180 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 197 transitions. [2022-11-02 20:25:16,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-02 20:25:16,180 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:16,181 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-02 20:25:16,201 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-11-02 20:25:16,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:25:16,394 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:16,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:16,394 INFO L85 PathProgramCache]: Analyzing trace with hash -168923055, now seen corresponding path program 1 times [2022-11-02 20:25:16,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:25:16,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [501922426] [2022-11-02 20:25:16,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:16,395 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:25:16,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:25:16,397 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:25:16,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-02 20:25:16,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:16,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-02 20:25:16,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:25:17,289 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:25:17,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:25:18,995 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:25:18,995 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:25:18,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [501922426] [2022-11-02 20:25:18,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [501922426] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:25:18,996 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:25:18,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-11-02 20:25:18,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700497702] [2022-11-02 20:25:18,997 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:25:18,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 20:25:18,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:25:18,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 20:25:18,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:25:18,998 INFO L87 Difference]: Start difference. First operand 153 states and 197 transitions. Second operand has 12 states, 12 states have (on average 13.166666666666666) internal successors, (158), 12 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:19,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:19,401 INFO L93 Difference]: Finished difference Result 306 states and 421 transitions. [2022-11-02 20:25:19,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 20:25:19,402 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 13.166666666666666) internal successors, (158), 12 states have internal predecessors, (158), 0 states have call successors, (0), 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 80 [2022-11-02 20:25:19,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:19,404 INFO L225 Difference]: With dead ends: 306 [2022-11-02 20:25:19,404 INFO L226 Difference]: Without dead ends: 304 [2022-11-02 20:25:19,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 146 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2022-11-02 20:25:19,405 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 756 mSDsluCounter, 796 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 756 SdHoareTripleChecker+Valid, 931 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 120 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:19,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [756 Valid, 931 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 80 Invalid, 0 Unknown, 120 Unchecked, 0.2s Time] [2022-11-02 20:25:19,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-11-02 20:25:19,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 228. [2022-11-02 20:25:19,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 227 states have (on average 1.3568281938325992) internal successors, (308), 227 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:19,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 308 transitions. [2022-11-02 20:25:19,415 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 308 transitions. Word has length 80 [2022-11-02 20:25:19,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:19,415 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 308 transitions. [2022-11-02 20:25:19,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.166666666666666) internal successors, (158), 12 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:19,416 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 308 transitions. [2022-11-02 20:25:19,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-11-02 20:25:19,417 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:19,417 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-02 20:25:19,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-11-02 20:25:19,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:25:19,633 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:19,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:19,634 INFO L85 PathProgramCache]: Analyzing trace with hash -962781355, now seen corresponding path program 1 times [2022-11-02 20:25:19,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:25:19,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [848180957] [2022-11-02 20:25:19,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:19,635 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:25:19,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:25:19,637 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:25:19,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-02 20:25:20,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:20,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 752 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-02 20:25:20,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:25:20,532 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 75 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:25:20,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:25:20,874 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 75 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:25:20,875 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:25:20,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [848180957] [2022-11-02 20:25:20,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [848180957] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:25:20,875 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:25:20,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-11-02 20:25:20,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701288508] [2022-11-02 20:25:20,876 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:25:20,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-02 20:25:20,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:25:20,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-02 20:25:20,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:25:20,878 INFO L87 Difference]: Start difference. First operand 228 states and 308 transitions. Second operand has 13 states, 13 states have (on average 18.0) internal successors, (234), 13 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:21,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:21,489 INFO L93 Difference]: Finished difference Result 553 states and 785 transitions. [2022-11-02 20:25:21,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:25:21,490 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 18.0) internal successors, (234), 13 states have internal predecessors, (234), 0 states have call successors, (0), 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 155 [2022-11-02 20:25:21,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:21,492 INFO L225 Difference]: With dead ends: 553 [2022-11-02 20:25:21,492 INFO L226 Difference]: Without dead ends: 401 [2022-11-02 20:25:21,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:25:21,493 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 975 mSDsluCounter, 1272 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 975 SdHoareTripleChecker+Valid, 1400 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:21,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [975 Valid, 1400 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:25:21,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2022-11-02 20:25:21,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 228. [2022-11-02 20:25:21,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 227 states have (on average 1.3524229074889869) internal successors, (307), 227 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:21,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 307 transitions. [2022-11-02 20:25:21,504 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 307 transitions. Word has length 155 [2022-11-02 20:25:21,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:21,504 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 307 transitions. [2022-11-02 20:25:21,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 18.0) internal successors, (234), 13 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:21,505 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 307 transitions. [2022-11-02 20:25:21,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-11-02 20:25:21,506 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:21,507 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-02 20:25:21,526 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (32)] Ended with exit code 0 [2022-11-02 20:25:21,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:25:21,722 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:21,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:21,722 INFO L85 PathProgramCache]: Analyzing trace with hash 771323095, now seen corresponding path program 1 times [2022-11-02 20:25:21,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:25:21,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [652791377] [2022-11-02 20:25:21,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:21,723 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:25:21,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:25:21,724 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:25:21,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-11-02 20:25:22,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:22,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 752 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:25:22,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:25:22,543 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 71 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:25:22,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:25:22,935 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 78 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:25:22,936 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:25:22,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [652791377] [2022-11-02 20:25:22,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [652791377] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:25:22,936 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:25:22,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2022-11-02 20:25:22,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642887840] [2022-11-02 20:25:22,936 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:25:22,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-02 20:25:22,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:25:22,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-02 20:25:22,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:25:22,941 INFO L87 Difference]: Start difference. First operand 228 states and 307 transitions. Second operand has 17 states, 17 states have (on average 13.117647058823529) internal successors, (223), 17 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:24,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:24,125 INFO L93 Difference]: Finished difference Result 1198 states and 1732 transitions. [2022-11-02 20:25:24,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-02 20:25:24,126 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 13.117647058823529) internal successors, (223), 17 states have internal predecessors, (223), 0 states have call successors, (0), 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 155 [2022-11-02 20:25:24,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:24,133 INFO L225 Difference]: With dead ends: 1198 [2022-11-02 20:25:24,133 INFO L226 Difference]: Without dead ends: 1046 [2022-11-02 20:25:24,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=285, Invalid=837, Unknown=0, NotChecked=0, Total=1122 [2022-11-02 20:25:24,142 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 1627 mSDsluCounter, 2090 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1627 SdHoareTripleChecker+Valid, 2251 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:24,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1627 Valid, 2251 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-02 20:25:24,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2022-11-02 20:25:24,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 378. [2022-11-02 20:25:24,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 377 states have (on average 1.3978779840848807) internal successors, (527), 377 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:24,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 527 transitions. [2022-11-02 20:25:24,174 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 527 transitions. Word has length 155 [2022-11-02 20:25:24,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:24,175 INFO L495 AbstractCegarLoop]: Abstraction has 378 states and 527 transitions. [2022-11-02 20:25:24,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 13.117647058823529) internal successors, (223), 17 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:24,175 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 527 transitions. [2022-11-02 20:25:24,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-11-02 20:25:24,177 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:24,177 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-02 20:25:24,203 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-11-02 20:25:24,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:25:24,395 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:24,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:24,395 INFO L85 PathProgramCache]: Analyzing trace with hash -196027559, now seen corresponding path program 1 times [2022-11-02 20:25:24,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:25:24,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1805420090] [2022-11-02 20:25:24,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:24,397 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:25:24,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:25:24,398 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:25:24,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-02 20:25:24,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:24,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 752 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 20:25:24,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:25:25,470 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 69 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 20:25:25,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:25:25,845 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 69 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 20:25:25,845 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:25:25,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1805420090] [2022-11-02 20:25:25,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1805420090] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:25:25,846 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:25:25,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2022-11-02 20:25:25,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213877255] [2022-11-02 20:25:25,846 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:25:25,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:25:25,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:25:25,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:25:25,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:25:25,848 INFO L87 Difference]: Start difference. First operand 378 states and 527 transitions. Second operand has 10 states, 10 states have (on average 23.0) internal successors, (230), 10 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:26,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:26,145 INFO L93 Difference]: Finished difference Result 1830 states and 2659 transitions. [2022-11-02 20:25:26,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:25:26,146 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 23.0) internal successors, (230), 10 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2022-11-02 20:25:26,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:26,152 INFO L225 Difference]: With dead ends: 1830 [2022-11-02 20:25:26,152 INFO L226 Difference]: Without dead ends: 1528 [2022-11-02 20:25:26,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 299 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:25:26,154 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 721 mSDsluCounter, 1166 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 721 SdHoareTripleChecker+Valid, 1348 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:26,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [721 Valid, 1348 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:25:26,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1528 states. [2022-11-02 20:25:26,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1528 to 678. [2022-11-02 20:25:26,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 677 states have (on average 1.4254062038404727) internal successors, (965), 677 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:26,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 965 transitions. [2022-11-02 20:25:26,191 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 965 transitions. Word has length 155 [2022-11-02 20:25:26,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:26,192 INFO L495 AbstractCegarLoop]: Abstraction has 678 states and 965 transitions. [2022-11-02 20:25:26,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 23.0) internal successors, (230), 10 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:26,192 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 965 transitions. [2022-11-02 20:25:26,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-11-02 20:25:26,193 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:26,194 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-02 20:25:26,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2022-11-02 20:25:26,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:25:26,412 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:26,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:26,412 INFO L85 PathProgramCache]: Analyzing trace with hash -688653733, now seen corresponding path program 1 times [2022-11-02 20:25:26,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:25:26,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [761418388] [2022-11-02 20:25:26,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:26,413 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:25:26,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:25:26,415 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:25:26,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-11-02 20:25:26,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:26,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 752 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:25:26,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:25:27,169 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 67 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:25:27,169 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:25:27,536 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 78 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:25:27,536 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:25:27,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [761418388] [2022-11-02 20:25:27,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [761418388] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:25:27,536 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:25:27,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2022-11-02 20:25:27,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811883022] [2022-11-02 20:25:27,537 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:25:27,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-02 20:25:27,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:25:27,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-02 20:25:27,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:25:27,539 INFO L87 Difference]: Start difference. First operand 678 states and 965 transitions. Second operand has 17 states, 17 states have (on average 13.117647058823529) internal successors, (223), 17 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:28,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:28,638 INFO L93 Difference]: Finished difference Result 2576 states and 3748 transitions. [2022-11-02 20:25:28,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-02 20:25:28,638 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 13.117647058823529) internal successors, (223), 17 states have internal predecessors, (223), 0 states have call successors, (0), 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 155 [2022-11-02 20:25:28,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:28,646 INFO L225 Difference]: With dead ends: 2576 [2022-11-02 20:25:28,646 INFO L226 Difference]: Without dead ends: 1974 [2022-11-02 20:25:28,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=285, Invalid=837, Unknown=0, NotChecked=0, Total=1122 [2022-11-02 20:25:28,649 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 1608 mSDsluCounter, 2223 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1608 SdHoareTripleChecker+Valid, 2387 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:28,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1608 Valid, 2387 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 562 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-02 20:25:28,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1974 states. [2022-11-02 20:25:28,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1974 to 678. [2022-11-02 20:25:28,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 677 states have (on average 1.4194977843426884) internal successors, (961), 677 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:28,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 961 transitions. [2022-11-02 20:25:28,690 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 961 transitions. Word has length 155 [2022-11-02 20:25:28,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:28,691 INFO L495 AbstractCegarLoop]: Abstraction has 678 states and 961 transitions. [2022-11-02 20:25:28,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 13.117647058823529) internal successors, (223), 17 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:28,691 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 961 transitions. [2022-11-02 20:25:28,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-11-02 20:25:28,693 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:28,693 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-02 20:25:28,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2022-11-02 20:25:28,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:25:28,910 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:28,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:28,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1904807459, now seen corresponding path program 1 times [2022-11-02 20:25:28,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:25:28,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1263085457] [2022-11-02 20:25:28,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:28,911 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:25:28,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:25:28,912 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:25:28,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-11-02 20:25:29,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:29,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 752 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:25:29,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:25:29,651 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 65 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:25:29,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:25:30,037 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 78 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:25:30,038 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:25:30,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1263085457] [2022-11-02 20:25:30,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1263085457] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:25:30,038 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:25:30,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2022-11-02 20:25:30,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378253526] [2022-11-02 20:25:30,038 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:25:30,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-02 20:25:30,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:25:30,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-02 20:25:30,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:25:30,040 INFO L87 Difference]: Start difference. First operand 678 states and 961 transitions. Second operand has 17 states, 17 states have (on average 13.117647058823529) internal successors, (223), 17 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:31,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:31,203 INFO L93 Difference]: Finished difference Result 2560 states and 3716 transitions. [2022-11-02 20:25:31,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-02 20:25:31,206 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 13.117647058823529) internal successors, (223), 17 states have internal predecessors, (223), 0 states have call successors, (0), 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 155 [2022-11-02 20:25:31,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:31,213 INFO L225 Difference]: With dead ends: 2560 [2022-11-02 20:25:31,213 INFO L226 Difference]: Without dead ends: 1958 [2022-11-02 20:25:31,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=285, Invalid=837, Unknown=0, NotChecked=0, Total=1122 [2022-11-02 20:25:31,216 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 1399 mSDsluCounter, 2289 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1399 SdHoareTripleChecker+Valid, 2454 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:31,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1399 Valid, 2454 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-02 20:25:31,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1958 states. [2022-11-02 20:25:31,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1958 to 678. [2022-11-02 20:25:31,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 677 states have (on average 1.413589364844904) internal successors, (957), 677 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:31,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 957 transitions. [2022-11-02 20:25:31,252 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 957 transitions. Word has length 155 [2022-11-02 20:25:31,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:31,253 INFO L495 AbstractCegarLoop]: Abstraction has 678 states and 957 transitions. [2022-11-02 20:25:31,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 13.117647058823529) internal successors, (223), 17 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:31,253 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 957 transitions. [2022-11-02 20:25:31,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-11-02 20:25:31,254 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:31,255 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-02 20:25:31,274 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (36)] Ended with exit code 0 [2022-11-02 20:25:31,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:25:31,468 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:31,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:31,469 INFO L85 PathProgramCache]: Analyzing trace with hash 703979999, now seen corresponding path program 1 times [2022-11-02 20:25:31,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:25:31,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1355346812] [2022-11-02 20:25:31,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:31,470 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:25:31,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:25:31,471 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:25:31,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-11-02 20:25:31,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:31,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 752 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-02 20:25:31,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:25:32,329 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 63 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:25:32,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:25:32,604 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 63 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:25:32,604 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:25:32,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1355346812] [2022-11-02 20:25:32,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1355346812] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:25:32,605 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:25:32,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-11-02 20:25:32,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633181401] [2022-11-02 20:25:32,606 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:25:32,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-02 20:25:32,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:25:32,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-02 20:25:32,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:25:32,608 INFO L87 Difference]: Start difference. First operand 678 states and 957 transitions. Second operand has 13 states, 13 states have (on average 18.923076923076923) internal successors, (246), 13 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:33,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:33,150 INFO L93 Difference]: Finished difference Result 1912 states and 2748 transitions. [2022-11-02 20:25:33,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:25:33,151 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 18.923076923076923) internal successors, (246), 13 states have internal predecessors, (246), 0 states have call successors, (0), 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 155 [2022-11-02 20:25:33,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:33,157 INFO L225 Difference]: With dead ends: 1912 [2022-11-02 20:25:33,158 INFO L226 Difference]: Without dead ends: 1310 [2022-11-02 20:25:33,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:25:33,160 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 1169 mSDsluCounter, 999 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1169 SdHoareTripleChecker+Valid, 1131 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:33,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1169 Valid, 1131 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:25:33,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1310 states. [2022-11-02 20:25:33,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1310 to 678. [2022-11-02 20:25:33,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 677 states have (on average 1.4076809453471197) internal successors, (953), 677 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:33,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 953 transitions. [2022-11-02 20:25:33,196 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 953 transitions. Word has length 155 [2022-11-02 20:25:33,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:33,196 INFO L495 AbstractCegarLoop]: Abstraction has 678 states and 953 transitions. [2022-11-02 20:25:33,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 18.923076923076923) internal successors, (246), 13 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:33,197 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 953 transitions. [2022-11-02 20:25:33,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-11-02 20:25:33,198 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:33,198 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-02 20:25:33,223 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2022-11-02 20:25:33,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:25:33,417 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:33,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:33,417 INFO L85 PathProgramCache]: Analyzing trace with hash 286583393, now seen corresponding path program 1 times [2022-11-02 20:25:33,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:25:33,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1250431162] [2022-11-02 20:25:33,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:33,419 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:25:33,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:25:33,421 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:25:33,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-11-02 20:25:33,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:33,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 752 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 20:25:33,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:25:34,493 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 61 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 20:25:34,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:25:34,850 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 61 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 20:25:34,851 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:25:34,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1250431162] [2022-11-02 20:25:34,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1250431162] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:25:34,851 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:25:34,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2022-11-02 20:25:34,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056029422] [2022-11-02 20:25:34,852 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:25:34,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:25:34,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:25:34,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:25:34,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:25:34,857 INFO L87 Difference]: Start difference. First operand 678 states and 953 transitions. Second operand has 10 states, 10 states have (on average 23.0) internal successors, (230), 10 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:35,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:35,163 INFO L93 Difference]: Finished difference Result 2098 states and 3009 transitions. [2022-11-02 20:25:35,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:25:35,164 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 23.0) internal successors, (230), 10 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2022-11-02 20:25:35,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:35,170 INFO L225 Difference]: With dead ends: 2098 [2022-11-02 20:25:35,170 INFO L226 Difference]: Without dead ends: 1496 [2022-11-02 20:25:35,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 299 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:25:35,172 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 664 mSDsluCounter, 1356 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 664 SdHoareTripleChecker+Valid, 1541 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:35,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [664 Valid, 1541 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:25:35,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2022-11-02 20:25:35,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 678. [2022-11-02 20:25:35,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 677 states have (on average 1.4017725258493352) internal successors, (949), 677 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:35,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 949 transitions. [2022-11-02 20:25:35,203 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 949 transitions. Word has length 155 [2022-11-02 20:25:35,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:35,204 INFO L495 AbstractCegarLoop]: Abstraction has 678 states and 949 transitions. [2022-11-02 20:25:35,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 23.0) internal successors, (230), 10 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:35,204 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 949 transitions. [2022-11-02 20:25:35,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-11-02 20:25:35,206 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:35,206 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-02 20:25:35,247 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2022-11-02 20:25:35,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:25:35,442 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:35,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:35,443 INFO L85 PathProgramCache]: Analyzing trace with hash -2046809245, now seen corresponding path program 1 times [2022-11-02 20:25:35,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:25:35,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1087650445] [2022-11-02 20:25:35,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:35,444 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:25:35,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:25:35,445 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:25:35,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-11-02 20:25:35,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:35,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 752 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 20:25:35,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:25:36,369 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 57 proven. 19 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 20:25:36,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:25:36,706 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 57 proven. 19 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 20:25:36,707 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:25:36,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1087650445] [2022-11-02 20:25:36,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1087650445] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:25:36,707 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:25:36,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2022-11-02 20:25:36,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699056866] [2022-11-02 20:25:36,707 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:25:36,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:25:36,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:25:36,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:25:36,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:25:36,709 INFO L87 Difference]: Start difference. First operand 678 states and 949 transitions. Second operand has 10 states, 10 states have (on average 23.0) internal successors, (230), 10 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:36,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:36,993 INFO L93 Difference]: Finished difference Result 2082 states and 2977 transitions. [2022-11-02 20:25:36,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:25:36,994 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 23.0) internal successors, (230), 10 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2022-11-02 20:25:36,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:36,999 INFO L225 Difference]: With dead ends: 2082 [2022-11-02 20:25:36,999 INFO L226 Difference]: Without dead ends: 1480 [2022-11-02 20:25:37,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 299 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:25:37,001 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 656 mSDsluCounter, 1348 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 656 SdHoareTripleChecker+Valid, 1533 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:37,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [656 Valid, 1533 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:25:37,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1480 states. [2022-11-02 20:25:37,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1480 to 678. [2022-11-02 20:25:37,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 677 states have (on average 1.395864106351551) internal successors, (945), 677 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:37,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 945 transitions. [2022-11-02 20:25:37,031 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 945 transitions. Word has length 155 [2022-11-02 20:25:37,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:37,032 INFO L495 AbstractCegarLoop]: Abstraction has 678 states and 945 transitions. [2022-11-02 20:25:37,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 23.0) internal successors, (230), 10 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:37,032 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 945 transitions. [2022-11-02 20:25:37,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-11-02 20:25:37,033 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:37,034 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-02 20:25:37,051 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (39)] Ended with exit code 0 [2022-11-02 20:25:37,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:25:37,251 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:37,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:37,252 INFO L85 PathProgramCache]: Analyzing trace with hash -785891995, now seen corresponding path program 1 times [2022-11-02 20:25:37,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:25:37,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [908256189] [2022-11-02 20:25:37,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:37,253 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:25:37,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:25:37,255 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:25:37,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-11-02 20:25:37,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:37,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 752 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:25:37,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:25:38,053 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 55 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:25:38,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:25:38,363 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 78 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:25:38,363 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:25:38,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [908256189] [2022-11-02 20:25:38,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [908256189] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:25:38,363 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:25:38,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2022-11-02 20:25:38,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029902779] [2022-11-02 20:25:38,364 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:25:38,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-02 20:25:38,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:25:38,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-02 20:25:38,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:25:38,365 INFO L87 Difference]: Start difference. First operand 678 states and 945 transitions. Second operand has 17 states, 17 states have (on average 13.117647058823529) internal successors, (223), 17 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:39,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:39,336 INFO L93 Difference]: Finished difference Result 2480 states and 3546 transitions. [2022-11-02 20:25:39,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-02 20:25:39,336 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 13.117647058823529) internal successors, (223), 17 states have internal predecessors, (223), 0 states have call successors, (0), 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 155 [2022-11-02 20:25:39,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:39,341 INFO L225 Difference]: With dead ends: 2480 [2022-11-02 20:25:39,342 INFO L226 Difference]: Without dead ends: 1878 [2022-11-02 20:25:39,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=285, Invalid=837, Unknown=0, NotChecked=0, Total=1122 [2022-11-02 20:25:39,344 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 1430 mSDsluCounter, 2017 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1430 SdHoareTripleChecker+Valid, 2189 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:39,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1430 Valid, 2189 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:25:39,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1878 states. [2022-11-02 20:25:39,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1878 to 678. [2022-11-02 20:25:39,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 677 states have (on average 1.3899556868537666) internal successors, (941), 677 states have internal predecessors, (941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:39,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 941 transitions. [2022-11-02 20:25:39,381 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 941 transitions. Word has length 155 [2022-11-02 20:25:39,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:39,382 INFO L495 AbstractCegarLoop]: Abstraction has 678 states and 941 transitions. [2022-11-02 20:25:39,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 13.117647058823529) internal successors, (223), 17 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:39,382 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 941 transitions. [2022-11-02 20:25:39,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-11-02 20:25:39,384 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:39,384 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-02 20:25:39,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2022-11-02 20:25:39,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:25:39,598 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:39,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:39,598 INFO L85 PathProgramCache]: Analyzing trace with hash 600893415, now seen corresponding path program 1 times [2022-11-02 20:25:39,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:25:39,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2107971686] [2022-11-02 20:25:39,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:39,599 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:25:39,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:25:39,601 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:25:39,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2022-11-02 20:25:39,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:39,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 752 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:25:39,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:25:40,328 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 53 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:25:40,328 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:25:40,675 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 78 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:25:40,675 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:25:40,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2107971686] [2022-11-02 20:25:40,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2107971686] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:25:40,676 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:25:40,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2022-11-02 20:25:40,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005571673] [2022-11-02 20:25:40,676 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:25:40,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-02 20:25:40,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:25:40,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-02 20:25:40,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:25:40,677 INFO L87 Difference]: Start difference. First operand 678 states and 941 transitions. Second operand has 17 states, 17 states have (on average 13.117647058823529) internal successors, (223), 17 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:41,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:41,741 INFO L93 Difference]: Finished difference Result 1420 states and 2017 transitions. [2022-11-02 20:25:41,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-02 20:25:41,743 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 13.117647058823529) internal successors, (223), 17 states have internal predecessors, (223), 0 states have call successors, (0), 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 155 [2022-11-02 20:25:41,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:41,746 INFO L225 Difference]: With dead ends: 1420 [2022-11-02 20:25:41,746 INFO L226 Difference]: Without dead ends: 1118 [2022-11-02 20:25:41,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=285, Invalid=837, Unknown=0, NotChecked=0, Total=1122 [2022-11-02 20:25:41,748 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 1651 mSDsluCounter, 2250 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1651 SdHoareTripleChecker+Valid, 2419 SdHoareTripleChecker+Invalid, 675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:41,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1651 Valid, 2419 Invalid, 675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-02 20:25:41,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1118 states. [2022-11-02 20:25:41,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1118 to 528. [2022-11-02 20:25:41,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 527 states have (on average 1.3776091081593929) internal successors, (726), 527 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:41,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 726 transitions. [2022-11-02 20:25:41,771 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 726 transitions. Word has length 155 [2022-11-02 20:25:41,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:41,772 INFO L495 AbstractCegarLoop]: Abstraction has 528 states and 726 transitions. [2022-11-02 20:25:41,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 13.117647058823529) internal successors, (223), 17 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:41,772 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 726 transitions. [2022-11-02 20:25:41,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-11-02 20:25:41,774 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:41,775 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-02 20:25:41,799 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2022-11-02 20:25:41,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:25:41,993 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:41,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:41,993 INFO L85 PathProgramCache]: Analyzing trace with hash 851923905, now seen corresponding path program 1 times [2022-11-02 20:25:41,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:25:41,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [375460939] [2022-11-02 20:25:41,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:41,994 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:25:41,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:25:41,995 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:25:41,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2022-11-02 20:25:42,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:42,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 1080 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:25:42,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:25:42,709 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 154 proven. 30 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-11-02 20:25:42,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:25:42,965 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 183 proven. 1 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-11-02 20:25:42,965 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:25:42,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [375460939] [2022-11-02 20:25:42,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [375460939] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:25:42,966 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:25:42,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-11-02 20:25:42,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735360495] [2022-11-02 20:25:42,966 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:25:42,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:25:42,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:25:42,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:25:42,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:25:42,968 INFO L87 Difference]: Start difference. First operand 528 states and 726 transitions. Second operand has 11 states, 11 states have (on average 21.454545454545453) internal successors, (236), 11 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:43,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:43,404 INFO L93 Difference]: Finished difference Result 2438 states and 3438 transitions. [2022-11-02 20:25:43,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:25:43,404 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 21.454545454545453) internal successors, (236), 11 states have internal predecessors, (236), 0 states have call successors, (0), 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 230 [2022-11-02 20:25:43,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:43,408 INFO L225 Difference]: With dead ends: 2438 [2022-11-02 20:25:43,408 INFO L226 Difference]: Without dead ends: 1986 [2022-11-02 20:25:43,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 449 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:25:43,410 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 692 mSDsluCounter, 1481 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 692 SdHoareTripleChecker+Valid, 1652 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:43,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [692 Valid, 1652 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:25:43,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1986 states. [2022-11-02 20:25:43,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1986 to 978. [2022-11-02 20:25:43,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 978 states, 977 states have (on average 1.3930399181166837) internal successors, (1361), 977 states have internal predecessors, (1361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:43,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1361 transitions. [2022-11-02 20:25:43,453 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1361 transitions. Word has length 230 [2022-11-02 20:25:43,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:43,453 INFO L495 AbstractCegarLoop]: Abstraction has 978 states and 1361 transitions. [2022-11-02 20:25:43,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 21.454545454545453) internal successors, (236), 11 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:43,454 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1361 transitions. [2022-11-02 20:25:43,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-11-02 20:25:43,456 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:43,457 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-02 20:25:43,481 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (42)] Ended with exit code 0 [2022-11-02 20:25:43,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:25:43,677 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:43,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:43,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1798961791, now seen corresponding path program 2 times [2022-11-02 20:25:43,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:25:43,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1287174559] [2022-11-02 20:25:43,679 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:25:43,679 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:25:43,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:25:43,680 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:25:43,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2022-11-02 20:25:44,061 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:25:44,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:25:44,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 1080 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-02 20:25:44,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:25:44,491 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 154 proven. 34 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-02 20:25:44,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:25:44,863 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 154 proven. 34 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-02 20:25:44,863 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:25:44,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1287174559] [2022-11-02 20:25:44,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1287174559] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:25:44,864 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:25:44,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2022-11-02 20:25:44,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126895043] [2022-11-02 20:25:44,865 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:25:44,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 20:25:44,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:25:44,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 20:25:44,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:25:44,867 INFO L87 Difference]: Start difference. First operand 978 states and 1361 transitions. Second operand has 19 states, 19 states have (on average 11.789473684210526) internal successors, (224), 19 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:46,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:46,418 INFO L93 Difference]: Finished difference Result 6870 states and 9750 transitions. [2022-11-02 20:25:46,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-02 20:25:46,419 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 11.789473684210526) internal successors, (224), 19 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 230 [2022-11-02 20:25:46,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:46,439 INFO L225 Difference]: With dead ends: 6870 [2022-11-02 20:25:46,439 INFO L226 Difference]: Without dead ends: 5968 [2022-11-02 20:25:46,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 441 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 525 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=578, Invalid=1972, Unknown=0, NotChecked=0, Total=2550 [2022-11-02 20:25:46,443 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 2581 mSDsluCounter, 1627 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2581 SdHoareTripleChecker+Valid, 1747 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:46,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2581 Valid, 1747 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-02 20:25:46,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5968 states. [2022-11-02 20:25:46,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5968 to 1992. [2022-11-02 20:25:46,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1992 states, 1991 states have (on average 1.390256152687092) internal successors, (2768), 1991 states have internal predecessors, (2768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:46,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1992 states to 1992 states and 2768 transitions. [2022-11-02 20:25:46,525 INFO L78 Accepts]: Start accepts. Automaton has 1992 states and 2768 transitions. Word has length 230 [2022-11-02 20:25:46,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:46,526 INFO L495 AbstractCegarLoop]: Abstraction has 1992 states and 2768 transitions. [2022-11-02 20:25:46,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 11.789473684210526) internal successors, (224), 19 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:46,526 INFO L276 IsEmpty]: Start isEmpty. Operand 1992 states and 2768 transitions. [2022-11-02 20:25:46,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-11-02 20:25:46,531 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:46,531 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-02 20:25:46,557 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2022-11-02 20:25:46,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:25:46,745 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:46,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:46,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1599812927, now seen corresponding path program 1 times [2022-11-02 20:25:46,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:25:46,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [144331227] [2022-11-02 20:25:46,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:46,746 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:25:46,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:25:46,747 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:25:46,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2022-11-02 20:25:47,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:47,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 1080 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:25:47,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:25:47,536 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 154 proven. 36 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-02 20:25:47,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:25:47,827 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 189 proven. 1 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-02 20:25:47,828 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:25:47,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [144331227] [2022-11-02 20:25:47,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [144331227] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:25:47,829 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:25:47,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-11-02 20:25:47,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703034573] [2022-11-02 20:25:47,830 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:25:47,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:25:47,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:25:47,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:25:47,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:25:47,832 INFO L87 Difference]: Start difference. First operand 1992 states and 2768 transitions. Second operand has 11 states, 11 states have (on average 23.636363636363637) internal successors, (260), 11 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:48,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:48,426 INFO L93 Difference]: Finished difference Result 10184 states and 14324 transitions. [2022-11-02 20:25:48,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:25:48,427 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 23.636363636363637) internal successors, (260), 11 states have internal predecessors, (260), 0 states have call successors, (0), 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 230 [2022-11-02 20:25:48,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:48,444 INFO L225 Difference]: With dead ends: 10184 [2022-11-02 20:25:48,444 INFO L226 Difference]: Without dead ends: 8310 [2022-11-02 20:25:48,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 449 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:25:48,449 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 944 mSDsluCounter, 1154 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 944 SdHoareTripleChecker+Valid, 1337 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:48,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [944 Valid, 1337 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:25:48,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8310 states. [2022-11-02 20:25:48,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8310 to 3864. [2022-11-02 20:25:48,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3864 states, 3863 states have (on average 1.3926999741133834) internal successors, (5380), 3863 states have internal predecessors, (5380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:48,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3864 states to 3864 states and 5380 transitions. [2022-11-02 20:25:48,643 INFO L78 Accepts]: Start accepts. Automaton has 3864 states and 5380 transitions. Word has length 230 [2022-11-02 20:25:48,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:48,643 INFO L495 AbstractCegarLoop]: Abstraction has 3864 states and 5380 transitions. [2022-11-02 20:25:48,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 23.636363636363637) internal successors, (260), 11 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:48,644 INFO L276 IsEmpty]: Start isEmpty. Operand 3864 states and 5380 transitions. [2022-11-02 20:25:48,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-11-02 20:25:48,656 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:48,656 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-02 20:25:48,678 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2022-11-02 20:25:48,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:25:48,870 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:48,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:48,870 INFO L85 PathProgramCache]: Analyzing trace with hash -242662787, now seen corresponding path program 2 times [2022-11-02 20:25:48,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:25:48,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [478038336] [2022-11-02 20:25:48,871 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:25:48,871 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:25:48,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:25:48,873 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:25:48,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2022-11-02 20:25:49,280 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:25:49,280 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:25:49,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 1080 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-02 20:25:49,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:25:49,951 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 154 proven. 38 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-02 20:25:49,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:25:50,485 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 154 proven. 38 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-02 20:25:50,485 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:25:50,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [478038336] [2022-11-02 20:25:50,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [478038336] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:25:50,486 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:25:50,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-11-02 20:25:50,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531648417] [2022-11-02 20:25:50,487 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:25:50,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-02 20:25:50,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:25:50,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-02 20:25:50,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2022-11-02 20:25:50,489 INFO L87 Difference]: Start difference. First operand 3864 states and 5380 transitions. Second operand has 24 states, 24 states have (on average 12.75) internal successors, (306), 24 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 20:25:53,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:53,595 INFO L93 Difference]: Finished difference Result 28264 states and 39392 transitions. [2022-11-02 20:25:53,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-02 20:25:53,595 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 12.75) internal successors, (306), 24 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) Word has length 230 [2022-11-02 20:25:53,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:53,638 INFO L225 Difference]: With dead ends: 28264 [2022-11-02 20:25:53,638 INFO L226 Difference]: Without dead ends: 24518 [2022-11-02 20:25:53,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 436 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 792 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=829, Invalid=2831, Unknown=0, NotChecked=0, Total=3660 [2022-11-02 20:25:53,646 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 2089 mSDsluCounter, 4446 mSDsCounter, 0 mSdLazyCounter, 1121 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2089 SdHoareTripleChecker+Valid, 4617 SdHoareTripleChecker+Invalid, 1189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:53,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2089 Valid, 4617 Invalid, 1189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1121 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-02 20:25:53,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24518 states. [2022-11-02 20:25:54,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24518 to 7704. [2022-11-02 20:25:54,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7704 states, 7703 states have (on average 1.3890691938205895) internal successors, (10700), 7703 states have internal predecessors, (10700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:54,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7704 states to 7704 states and 10700 transitions. [2022-11-02 20:25:54,080 INFO L78 Accepts]: Start accepts. Automaton has 7704 states and 10700 transitions. Word has length 230 [2022-11-02 20:25:54,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:54,082 INFO L495 AbstractCegarLoop]: Abstraction has 7704 states and 10700 transitions. [2022-11-02 20:25:54,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 12.75) internal successors, (306), 24 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 20:25:54,082 INFO L276 IsEmpty]: Start isEmpty. Operand 7704 states and 10700 transitions. [2022-11-02 20:25:54,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-11-02 20:25:54,099 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:54,099 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-02 20:25:54,121 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2022-11-02 20:25:54,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:25:54,320 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:54,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:54,320 INFO L85 PathProgramCache]: Analyzing trace with hash 89980351, now seen corresponding path program 3 times [2022-11-02 20:25:54,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:25:54,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [895211511] [2022-11-02 20:25:54,321 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:25:54,322 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:25:54,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:25:54,323 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:25:54,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2022-11-02 20:25:54,581 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-02 20:25:54,581 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:25:54,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:25:54,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:25:54,623 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-11-02 20:25:54,623 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:25:54,623 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:25:54,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [895211511] [2022-11-02 20:25:54,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [895211511] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:54,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:54,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:25:54,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939454406] [2022-11-02 20:25:54,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:54,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:25:54,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:25:54,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:25:54,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:25:54,626 INFO L87 Difference]: Start difference. First operand 7704 states and 10700 transitions. Second operand has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:55,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:55,154 INFO L93 Difference]: Finished difference Result 22796 states and 31769 transitions. [2022-11-02 20:25:55,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:25:55,155 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 0 states have call successors, (0), 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 230 [2022-11-02 20:25:55,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:55,179 INFO L225 Difference]: With dead ends: 22796 [2022-11-02 20:25:55,179 INFO L226 Difference]: Without dead ends: 19002 [2022-11-02 20:25:55,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:25:55,184 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 626 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 626 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:55,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [626 Valid, 353 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:25:55,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19002 states. [2022-11-02 20:25:55,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19002 to 7896. [2022-11-02 20:25:55,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7896 states, 7895 states have (on average 1.3836605446485117) internal successors, (10924), 7895 states have internal predecessors, (10924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:55,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7896 states to 7896 states and 10924 transitions. [2022-11-02 20:25:55,575 INFO L78 Accepts]: Start accepts. Automaton has 7896 states and 10924 transitions. Word has length 230 [2022-11-02 20:25:55,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:55,575 INFO L495 AbstractCegarLoop]: Abstraction has 7896 states and 10924 transitions. [2022-11-02 20:25:55,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:55,576 INFO L276 IsEmpty]: Start isEmpty. Operand 7896 states and 10924 transitions. [2022-11-02 20:25:55,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-11-02 20:25:55,589 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:55,589 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-02 20:25:55,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2022-11-02 20:25:55,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:25:55,805 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:55,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:55,805 INFO L85 PathProgramCache]: Analyzing trace with hash -402645823, now seen corresponding path program 1 times [2022-11-02 20:25:55,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:25:55,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [322978542] [2022-11-02 20:25:55,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:55,806 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:25:55,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:25:55,807 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:25:55,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2022-11-02 20:25:56,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:56,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 1080 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-02 20:25:56,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:25:56,513 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 154 proven. 40 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-02 20:25:56,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:25:56,915 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 154 proven. 40 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-02 20:25:56,915 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:25:56,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [322978542] [2022-11-02 20:25:56,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [322978542] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:25:56,918 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:25:56,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2022-11-02 20:25:56,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562460058] [2022-11-02 20:25:56,918 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:25:56,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 20:25:56,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:25:56,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 20:25:56,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:25:56,920 INFO L87 Difference]: Start difference. First operand 7896 states and 10924 transitions. Second operand has 19 states, 19 states have (on average 12.421052631578947) internal successors, (236), 19 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:58,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:25:58,607 INFO L93 Difference]: Finished difference Result 23316 states and 32486 transitions. [2022-11-02 20:25:58,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-02 20:25:58,608 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 12.421052631578947) internal successors, (236), 19 states have internal predecessors, (236), 0 states have call successors, (0), 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 230 [2022-11-02 20:25:58,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:25:58,617 INFO L225 Difference]: With dead ends: 23316 [2022-11-02 20:25:58,617 INFO L226 Difference]: Without dead ends: 15538 [2022-11-02 20:25:58,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 441 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=529, Invalid=1823, Unknown=0, NotChecked=0, Total=2352 [2022-11-02 20:25:58,622 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 1467 mSDsluCounter, 2673 mSDsCounter, 0 mSdLazyCounter, 793 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1467 SdHoareTripleChecker+Valid, 2802 SdHoareTripleChecker+Invalid, 837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 793 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:25:58,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1467 Valid, 2802 Invalid, 837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 793 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-02 20:25:58,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15538 states. [2022-11-02 20:25:58,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15538 to 6072. [2022-11-02 20:25:58,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6072 states, 6071 states have (on average 1.3717674188766267) internal successors, (8328), 6071 states have internal predecessors, (8328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:58,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6072 states to 6072 states and 8328 transitions. [2022-11-02 20:25:58,967 INFO L78 Accepts]: Start accepts. Automaton has 6072 states and 8328 transitions. Word has length 230 [2022-11-02 20:25:58,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:25:58,968 INFO L495 AbstractCegarLoop]: Abstraction has 6072 states and 8328 transitions. [2022-11-02 20:25:58,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 12.421052631578947) internal successors, (236), 19 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:25:58,968 INFO L276 IsEmpty]: Start isEmpty. Operand 6072 states and 8328 transitions. [2022-11-02 20:25:58,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-11-02 20:25:58,978 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:25:58,978 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-02 20:25:59,002 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2022-11-02 20:25:59,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:25:59,197 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:25:59,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:59,197 INFO L85 PathProgramCache]: Analyzing trace with hash -669773441, now seen corresponding path program 1 times [2022-11-02 20:25:59,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:25:59,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1644254958] [2022-11-02 20:25:59,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:59,199 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:25:59,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:25:59,200 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:25:59,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2022-11-02 20:25:59,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:59,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 1080 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:25:59,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:25:59,949 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 154 proven. 42 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-02 20:25:59,949 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:26:00,223 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 195 proven. 1 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-02 20:26:00,223 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:26:00,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1644254958] [2022-11-02 20:26:00,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1644254958] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:26:00,224 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:26:00,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-11-02 20:26:00,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296476018] [2022-11-02 20:26:00,224 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:26:00,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:26:00,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:26:00,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:26:00,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:26:00,227 INFO L87 Difference]: Start difference. First operand 6072 states and 8328 transitions. Second operand has 11 states, 11 states have (on average 24.181818181818183) internal successors, (266), 11 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:00,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:26:00,976 INFO L93 Difference]: Finished difference Result 19856 states and 27436 transitions. [2022-11-02 20:26:00,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:26:00,977 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 24.181818181818183) internal successors, (266), 11 states have internal predecessors, (266), 0 states have call successors, (0), 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 230 [2022-11-02 20:26:00,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:26:00,990 INFO L225 Difference]: With dead ends: 19856 [2022-11-02 20:26:00,990 INFO L226 Difference]: Without dead ends: 13902 [2022-11-02 20:26:00,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 449 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:26:00,996 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 914 mSDsluCounter, 1145 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 914 SdHoareTripleChecker+Valid, 1330 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:26:00,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [914 Valid, 1330 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:26:01,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13902 states. [2022-11-02 20:26:01,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13902 to 6072. [2022-11-02 20:26:01,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6072 states, 6071 states have (on average 1.3678141986493164) internal successors, (8304), 6071 states have internal predecessors, (8304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:01,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6072 states to 6072 states and 8304 transitions. [2022-11-02 20:26:01,248 INFO L78 Accepts]: Start accepts. Automaton has 6072 states and 8304 transitions. Word has length 230 [2022-11-02 20:26:01,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:26:01,248 INFO L495 AbstractCegarLoop]: Abstraction has 6072 states and 8304 transitions. [2022-11-02 20:26:01,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 24.181818181818183) internal successors, (266), 11 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:01,249 INFO L276 IsEmpty]: Start isEmpty. Operand 6072 states and 8304 transitions. [2022-11-02 20:26:01,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-11-02 20:26:01,256 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:26:01,256 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-02 20:26:01,276 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (48)] Forceful destruction successful, exit code 0 [2022-11-02 20:26:01,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:26:01,470 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:26:01,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:26:01,470 INFO L85 PathProgramCache]: Analyzing trace with hash -198417091, now seen corresponding path program 2 times [2022-11-02 20:26:01,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:26:01,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1994927935] [2022-11-02 20:26:01,471 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:26:01,471 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:26:01,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:26:01,472 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:26:01,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2022-11-02 20:26:01,803 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:26:01,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:26:01,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 1080 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-02 20:26:01,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:26:02,146 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 154 proven. 46 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-02 20:26:02,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:26:02,477 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 154 proven. 46 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-02 20:26:02,477 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:26:02,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1994927935] [2022-11-02 20:26:02,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1994927935] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:26:02,478 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:26:02,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2022-11-02 20:26:02,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685463573] [2022-11-02 20:26:02,478 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:26:02,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 20:26:02,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:26:02,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 20:26:02,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:26:02,480 INFO L87 Difference]: Start difference. First operand 6072 states and 8304 transitions. Second operand has 19 states, 19 states have (on average 12.736842105263158) internal successors, (242), 19 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:04,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:26:04,746 INFO L93 Difference]: Finished difference Result 25720 states and 35564 transitions. [2022-11-02 20:26:04,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-02 20:26:04,746 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 12.736842105263158) internal successors, (242), 19 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 230 [2022-11-02 20:26:04,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:26:04,758 INFO L225 Difference]: With dead ends: 25720 [2022-11-02 20:26:04,758 INFO L226 Difference]: Without dead ends: 19766 [2022-11-02 20:26:04,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 441 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 846 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=808, Invalid=2852, Unknown=0, NotChecked=0, Total=3660 [2022-11-02 20:26:04,765 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 1777 mSDsluCounter, 2800 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1777 SdHoareTripleChecker+Valid, 2938 SdHoareTripleChecker+Invalid, 898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:26:04,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1777 Valid, 2938 Invalid, 898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 844 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-02 20:26:04,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19766 states. [2022-11-02 20:26:05,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19766 to 6360. [2022-11-02 20:26:05,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6360 states, 6359 states have (on average 1.3624783771033182) internal successors, (8664), 6359 states have internal predecessors, (8664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:05,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6360 states to 6360 states and 8664 transitions. [2022-11-02 20:26:05,058 INFO L78 Accepts]: Start accepts. Automaton has 6360 states and 8664 transitions. Word has length 230 [2022-11-02 20:26:05,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:26:05,058 INFO L495 AbstractCegarLoop]: Abstraction has 6360 states and 8664 transitions. [2022-11-02 20:26:05,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 12.736842105263158) internal successors, (242), 19 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:05,058 INFO L276 IsEmpty]: Start isEmpty. Operand 6360 states and 8664 transitions. [2022-11-02 20:26:05,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-11-02 20:26:05,063 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:26:05,063 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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] [2022-11-02 20:26:05,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2022-11-02 20:26:05,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:26:05,264 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:26:05,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:26:05,264 INFO L85 PathProgramCache]: Analyzing trace with hash 2050998269, now seen corresponding path program 1 times [2022-11-02 20:26:05,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:26:05,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1136699734] [2022-11-02 20:26:05,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:26:05,265 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:26:05,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:26:05,266 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:26:05,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2022-11-02 20:26:05,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:05,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 1080 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-02 20:26:05,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:26:06,024 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 154 proven. 48 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-02 20:26:06,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:26:06,419 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 154 proven. 48 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-02 20:26:06,420 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:26:06,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1136699734] [2022-11-02 20:26:06,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1136699734] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:26:06,420 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:26:06,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2022-11-02 20:26:06,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353699709] [2022-11-02 20:26:06,420 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:26:06,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 20:26:06,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:26:06,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 20:26:06,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:26:06,422 INFO L87 Difference]: Start difference. First operand 6360 states and 8664 transitions. Second operand has 19 states, 19 states have (on average 12.842105263157896) internal successors, (244), 19 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:08,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:26:08,962 INFO L93 Difference]: Finished difference Result 26104 states and 35948 transitions. [2022-11-02 20:26:08,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-02 20:26:08,963 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 12.842105263157896) internal successors, (244), 19 states have internal predecessors, (244), 0 states have call successors, (0), 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 230 [2022-11-02 20:26:08,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:26:08,977 INFO L225 Difference]: With dead ends: 26104 [2022-11-02 20:26:08,977 INFO L226 Difference]: Without dead ends: 19862 [2022-11-02 20:26:08,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 441 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 846 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=808, Invalid=2852, Unknown=0, NotChecked=0, Total=3660 [2022-11-02 20:26:08,985 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 2110 mSDsluCounter, 2930 mSDsCounter, 0 mSdLazyCounter, 864 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2110 SdHoareTripleChecker+Valid, 3072 SdHoareTripleChecker+Invalid, 930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 864 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:26:08,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2110 Valid, 3072 Invalid, 930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 864 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-02 20:26:08,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19862 states. [2022-11-02 20:26:09,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19862 to 6456. [2022-11-02 20:26:09,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6456 states, 6455 states have (on average 1.3533694810224632) internal successors, (8736), 6455 states have internal predecessors, (8736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:09,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6456 states to 6456 states and 8736 transitions. [2022-11-02 20:26:09,299 INFO L78 Accepts]: Start accepts. Automaton has 6456 states and 8736 transitions. Word has length 230 [2022-11-02 20:26:09,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:26:09,300 INFO L495 AbstractCegarLoop]: Abstraction has 6456 states and 8736 transitions. [2022-11-02 20:26:09,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 12.842105263157896) internal successors, (244), 19 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:09,300 INFO L276 IsEmpty]: Start isEmpty. Operand 6456 states and 8736 transitions. [2022-11-02 20:26:09,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-11-02 20:26:09,304 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:26:09,305 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2022-11-02 20:26:09,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2022-11-02 20:26:09,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:26:09,522 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:26:09,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:26:09,522 INFO L85 PathProgramCache]: Analyzing trace with hash 2129316541, now seen corresponding path program 1 times [2022-11-02 20:26:09,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:26:09,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1821734468] [2022-11-02 20:26:09,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:26:09,524 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:26:09,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:26:09,525 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:26:09,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2022-11-02 20:26:09,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:09,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 1080 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 20:26:09,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:26:10,343 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 154 proven. 56 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-02 20:26:10,344 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:26:10,721 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 195 proven. 15 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-02 20:26:10,721 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:26:10,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1821734468] [2022-11-02 20:26:10,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1821734468] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:26:10,721 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:26:10,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2022-11-02 20:26:10,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989935441] [2022-11-02 20:26:10,722 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:26:10,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 20:26:10,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:26:10,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 20:26:10,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:26:10,723 INFO L87 Difference]: Start difference. First operand 6456 states and 8736 transitions. Second operand has 19 states, 19 states have (on average 13.578947368421053) internal successors, (258), 19 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:12,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:26:12,408 INFO L93 Difference]: Finished difference Result 40224 states and 54522 transitions. [2022-11-02 20:26:12,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-02 20:26:12,408 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 13.578947368421053) internal successors, (258), 19 states have internal predecessors, (258), 0 states have call successors, (0), 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 230 [2022-11-02 20:26:12,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:26:12,430 INFO L225 Difference]: With dead ends: 40224 [2022-11-02 20:26:12,430 INFO L226 Difference]: Without dead ends: 33886 [2022-11-02 20:26:12,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 441 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=399, Invalid=1323, Unknown=0, NotChecked=0, Total=1722 [2022-11-02 20:26:12,438 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 2142 mSDsluCounter, 1909 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2142 SdHoareTripleChecker+Valid, 2058 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:26:12,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2142 Valid, 2058 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 20:26:12,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33886 states. [2022-11-02 20:26:12,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33886 to 14100. [2022-11-02 20:26:12,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14100 states, 14099 states have (on average 1.347045889779417) internal successors, (18992), 14099 states have internal predecessors, (18992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:12,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14100 states to 14100 states and 18992 transitions. [2022-11-02 20:26:12,924 INFO L78 Accepts]: Start accepts. Automaton has 14100 states and 18992 transitions. Word has length 230 [2022-11-02 20:26:12,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:26:12,924 INFO L495 AbstractCegarLoop]: Abstraction has 14100 states and 18992 transitions. [2022-11-02 20:26:12,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 13.578947368421053) internal successors, (258), 19 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:12,925 INFO L276 IsEmpty]: Start isEmpty. Operand 14100 states and 18992 transitions. [2022-11-02 20:26:12,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-11-02 20:26:12,935 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:26:12,935 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2022-11-02 20:26:12,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2022-11-02 20:26:13,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:26:13,136 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:26:13,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:26:13,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1582525059, now seen corresponding path program 1 times [2022-11-02 20:26:13,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:26:13,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [290570175] [2022-11-02 20:26:13,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:26:13,137 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:26:13,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:26:13,138 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:26:13,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2022-11-02 20:26:13,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:13,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 1080 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 20:26:13,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:26:14,001 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 154 proven. 58 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-02 20:26:14,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:26:14,447 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 195 proven. 17 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-02 20:26:14,447 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:26:14,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [290570175] [2022-11-02 20:26:14,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [290570175] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:26:14,448 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:26:14,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2022-11-02 20:26:14,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755500591] [2022-11-02 20:26:14,448 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:26:14,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 20:26:14,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:26:14,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 20:26:14,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:26:14,450 INFO L87 Difference]: Start difference. First operand 14100 states and 18992 transitions. Second operand has 19 states, 19 states have (on average 13.68421052631579) internal successors, (260), 19 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:16,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:26:16,513 INFO L93 Difference]: Finished difference Result 47808 states and 64470 transitions. [2022-11-02 20:26:16,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-02 20:26:16,514 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 13.68421052631579) internal successors, (260), 19 states have internal predecessors, (260), 0 states have call successors, (0), 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 230 [2022-11-02 20:26:16,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:26:16,538 INFO L225 Difference]: With dead ends: 47808 [2022-11-02 20:26:16,538 INFO L226 Difference]: Without dead ends: 33886 [2022-11-02 20:26:16,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 441 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=399, Invalid=1323, Unknown=0, NotChecked=0, Total=1722 [2022-11-02 20:26:16,553 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 2050 mSDsluCounter, 1962 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2050 SdHoareTripleChecker+Valid, 2112 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:26:16,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2050 Valid, 2112 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:26:16,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33886 states. [2022-11-02 20:26:17,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33886 to 14244. [2022-11-02 20:26:17,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14244 states, 14243 states have (on average 1.3384820613634767) internal successors, (19064), 14243 states have internal predecessors, (19064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:17,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14244 states to 14244 states and 19064 transitions. [2022-11-02 20:26:17,128 INFO L78 Accepts]: Start accepts. Automaton has 14244 states and 19064 transitions. Word has length 230 [2022-11-02 20:26:17,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:26:17,129 INFO L495 AbstractCegarLoop]: Abstraction has 14244 states and 19064 transitions. [2022-11-02 20:26:17,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 13.68421052631579) internal successors, (260), 19 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:17,129 INFO L276 IsEmpty]: Start isEmpty. Operand 14244 states and 19064 transitions. [2022-11-02 20:26:17,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-11-02 20:26:17,145 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:26:17,145 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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] [2022-11-02 20:26:17,162 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (52)] Ended with exit code 0 [2022-11-02 20:26:17,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:26:17,345 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:26:17,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:26:17,346 INFO L85 PathProgramCache]: Analyzing trace with hash 2078412861, now seen corresponding path program 1 times [2022-11-02 20:26:17,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:26:17,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1084229025] [2022-11-02 20:26:17,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:26:17,347 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:26:17,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:26:17,348 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:26:17,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2022-11-02 20:26:17,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:17,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 1080 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:26:17,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:26:18,011 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 154 proven. 60 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-02 20:26:18,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:26:18,280 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 154 proven. 60 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-02 20:26:18,281 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:26:18,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1084229025] [2022-11-02 20:26:18,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1084229025] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:26:18,281 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:26:18,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-11-02 20:26:18,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355327436] [2022-11-02 20:26:18,281 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:26:18,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:26:18,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:26:18,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:26:18,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:26:18,283 INFO L87 Difference]: Start difference. First operand 14244 states and 19064 transitions. Second operand has 11 states, 11 states have (on average 20.90909090909091) internal successors, (230), 11 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:19,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:26:19,778 INFO L93 Difference]: Finished difference Result 79852 states and 108028 transitions. [2022-11-02 20:26:19,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-02 20:26:19,779 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 20.90909090909091) internal successors, (230), 11 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 230 [2022-11-02 20:26:19,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:26:19,846 INFO L225 Difference]: With dead ends: 79852 [2022-11-02 20:26:19,846 INFO L226 Difference]: Without dead ends: 70474 [2022-11-02 20:26:19,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 472 GetRequests, 449 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=185, Invalid=415, Unknown=0, NotChecked=0, Total=600 [2022-11-02 20:26:19,862 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 1953 mSDsluCounter, 678 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1953 SdHoareTripleChecker+Valid, 844 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:26:19,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1953 Valid, 844 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:26:19,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70474 states. [2022-11-02 20:26:20,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70474 to 36420. [2022-11-02 20:26:20,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36420 states, 36419 states have (on average 1.33930091435789) internal successors, (48776), 36419 states have internal predecessors, (48776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:20,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36420 states to 36420 states and 48776 transitions. [2022-11-02 20:26:20,973 INFO L78 Accepts]: Start accepts. Automaton has 36420 states and 48776 transitions. Word has length 230 [2022-11-02 20:26:20,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:26:20,973 INFO L495 AbstractCegarLoop]: Abstraction has 36420 states and 48776 transitions. [2022-11-02 20:26:20,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 20.90909090909091) internal successors, (230), 11 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:20,974 INFO L276 IsEmpty]: Start isEmpty. Operand 36420 states and 48776 transitions. [2022-11-02 20:26:20,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-11-02 20:26:20,991 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:26:20,991 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2022-11-02 20:26:21,008 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (53)] Ended with exit code 0 [2022-11-02 20:26:21,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:26:21,191 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:26:21,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:26:21,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1229505795, now seen corresponding path program 1 times [2022-11-02 20:26:21,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:26:21,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [513790900] [2022-11-02 20:26:21,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:26:21,193 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:26:21,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:26:21,194 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:26:21,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2022-11-02 20:26:21,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:21,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 1080 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:26:21,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:26:21,956 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 154 proven. 64 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-02 20:26:21,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:26:22,243 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 201 proven. 17 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-02 20:26:22,243 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:26:22,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [513790900] [2022-11-02 20:26:22,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [513790900] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:26:22,244 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:26:22,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-11-02 20:26:22,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636817088] [2022-11-02 20:26:22,244 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:26:22,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:26:22,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:26:22,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:26:22,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:26:22,246 INFO L87 Difference]: Start difference. First operand 36420 states and 48776 transitions. Second operand has 11 states, 11 states have (on average 24.363636363636363) internal successors, (268), 11 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:25,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:26:25,044 INFO L93 Difference]: Finished difference Result 148732 states and 200380 transitions. [2022-11-02 20:26:25,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:26:25,044 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 24.363636363636363) internal successors, (268), 11 states have internal predecessors, (268), 0 states have call successors, (0), 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 230 [2022-11-02 20:26:25,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:26:25,197 INFO L225 Difference]: With dead ends: 148732 [2022-11-02 20:26:25,197 INFO L226 Difference]: Without dead ends: 112490 [2022-11-02 20:26:25,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 449 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:26:25,221 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 793 mSDsluCounter, 977 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 793 SdHoareTripleChecker+Valid, 1132 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:26:25,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [793 Valid, 1132 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:26:25,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112490 states. [2022-11-02 20:26:27,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112490 to 67652. [2022-11-02 20:26:27,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67652 states, 67651 states have (on average 1.3425374347755392) internal successors, (90824), 67651 states have internal predecessors, (90824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:27,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67652 states to 67652 states and 90824 transitions. [2022-11-02 20:26:27,538 INFO L78 Accepts]: Start accepts. Automaton has 67652 states and 90824 transitions. Word has length 230 [2022-11-02 20:26:27,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:26:27,538 INFO L495 AbstractCegarLoop]: Abstraction has 67652 states and 90824 transitions. [2022-11-02 20:26:27,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 24.363636363636363) internal successors, (268), 11 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:27,538 INFO L276 IsEmpty]: Start isEmpty. Operand 67652 states and 90824 transitions. [2022-11-02 20:26:27,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2022-11-02 20:26:27,557 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:26:27,557 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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] [2022-11-02 20:26:27,570 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (54)] Forceful destruction successful, exit code 0 [2022-11-02 20:26:27,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:26:27,758 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:26:27,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:26:27,758 INFO L85 PathProgramCache]: Analyzing trace with hash -632306243, now seen corresponding path program 1 times [2022-11-02 20:26:27,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:26:27,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [377899194] [2022-11-02 20:26:27,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:26:27,759 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:26:27,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:26:27,760 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:26:27,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2022-11-02 20:26:28,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:28,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 1080 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:26:28,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:26:28,455 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 154 proven. 66 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-02 20:26:28,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:26:28,720 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 201 proven. 19 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-02 20:26:28,720 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:26:28,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [377899194] [2022-11-02 20:26:28,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [377899194] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:26:28,720 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:26:28,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-11-02 20:26:28,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481711908] [2022-11-02 20:26:28,721 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:26:28,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:26:28,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:26:28,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:26:28,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:26:28,722 INFO L87 Difference]: Start difference. First operand 67652 states and 90824 transitions. Second operand has 11 states, 11 states have (on average 24.545454545454547) internal successors, (270), 11 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:30,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:26:30,360 INFO L93 Difference]: Finished difference Result 114856 states and 154986 transitions. [2022-11-02 20:26:30,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:26:30,361 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 24.545454545454547) internal successors, (270), 11 states have internal predecessors, (270), 0 states have call successors, (0), 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 230 [2022-11-02 20:26:30,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:26:30,402 INFO L225 Difference]: With dead ends: 114856 [2022-11-02 20:26:30,402 INFO L226 Difference]: Without dead ends: 56038 [2022-11-02 20:26:30,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 449 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:26:30,426 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 658 mSDsluCounter, 1289 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 658 SdHoareTripleChecker+Valid, 1454 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:26:30,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [658 Valid, 1454 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:26:30,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56038 states. [2022-11-02 20:26:31,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56038 to 31300. [2022-11-02 20:26:31,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31300 states, 31299 states have (on average 1.3401067126745263) internal successors, (41944), 31299 states have internal predecessors, (41944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:31,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31300 states to 31300 states and 41944 transitions. [2022-11-02 20:26:31,384 INFO L78 Accepts]: Start accepts. Automaton has 31300 states and 41944 transitions. Word has length 230 [2022-11-02 20:26:31,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:26:31,384 INFO L495 AbstractCegarLoop]: Abstraction has 31300 states and 41944 transitions. [2022-11-02 20:26:31,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 24.545454545454547) internal successors, (270), 11 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:31,384 INFO L276 IsEmpty]: Start isEmpty. Operand 31300 states and 41944 transitions. [2022-11-02 20:26:31,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2022-11-02 20:26:31,409 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:26:31,410 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:26:31,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (55)] Forceful destruction successful, exit code 0 [2022-11-02 20:26:31,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:26:31,629 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:26:31,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:26:31,630 INFO L85 PathProgramCache]: Analyzing trace with hash 308923179, now seen corresponding path program 1 times [2022-11-02 20:26:31,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:26:31,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [168464938] [2022-11-02 20:26:31,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:26:31,632 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:26:31,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:26:31,633 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:26:31,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2022-11-02 20:26:32,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:32,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 2064 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-02 20:26:32,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:26:33,012 INFO L134 CoverageAnalysis]: Checked inductivity of 1137 backedges. 583 proven. 68 refuted. 0 times theorem prover too weak. 486 trivial. 0 not checked. [2022-11-02 20:26:33,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:26:33,523 INFO L134 CoverageAnalysis]: Checked inductivity of 1137 backedges. 583 proven. 68 refuted. 0 times theorem prover too weak. 486 trivial. 0 not checked. [2022-11-02 20:26:33,524 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:26:33,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [168464938] [2022-11-02 20:26:33,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [168464938] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:26:33,525 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:26:33,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2022-11-02 20:26:33,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259010347] [2022-11-02 20:26:33,525 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:26:33,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 20:26:33,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:26:33,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 20:26:33,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:26:33,528 INFO L87 Difference]: Start difference. First operand 31300 states and 41944 transitions. Second operand has 19 states, 19 states have (on average 14.31578947368421) internal successors, (272), 19 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:37,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:26:37,499 INFO L93 Difference]: Finished difference Result 182696 states and 245362 transitions. [2022-11-02 20:26:37,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-02 20:26:37,500 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 14.31578947368421) internal successors, (272), 19 states have internal predecessors, (272), 0 states have call successors, (0), 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 455 [2022-11-02 20:26:37,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:26:37,633 INFO L225 Difference]: With dead ends: 182696 [2022-11-02 20:26:37,633 INFO L226 Difference]: Without dead ends: 152966 [2022-11-02 20:26:37,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 953 GetRequests, 891 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1022 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=881, Invalid=3151, Unknown=0, NotChecked=0, Total=4032 [2022-11-02 20:26:37,661 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 2884 mSDsluCounter, 2737 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2884 SdHoareTripleChecker+Valid, 3006 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:26:37,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2884 Valid, 3006 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 618 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-02 20:26:37,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152966 states. [2022-11-02 20:26:39,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152966 to 49908. [2022-11-02 20:26:39,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49908 states, 49907 states have (on average 1.3384895906385879) internal successors, (66800), 49907 states have internal predecessors, (66800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:39,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49908 states to 49908 states and 66800 transitions. [2022-11-02 20:26:39,387 INFO L78 Accepts]: Start accepts. Automaton has 49908 states and 66800 transitions. Word has length 455 [2022-11-02 20:26:39,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:26:39,387 INFO L495 AbstractCegarLoop]: Abstraction has 49908 states and 66800 transitions. [2022-11-02 20:26:39,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 14.31578947368421) internal successors, (272), 19 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:39,387 INFO L276 IsEmpty]: Start isEmpty. Operand 49908 states and 66800 transitions. [2022-11-02 20:26:39,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2022-11-02 20:26:39,442 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:26:39,442 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:26:39,472 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (56)] Forceful destruction successful, exit code 0 [2022-11-02 20:26:39,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:26:39,666 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:26:39,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:26:39,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1249265449, now seen corresponding path program 1 times [2022-11-02 20:26:39,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:26:39,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1004061750] [2022-11-02 20:26:39,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:26:39,668 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:26:39,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:26:39,669 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:26:39,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2022-11-02 20:26:40,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:40,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 2064 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:26:40,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:26:40,505 INFO L134 CoverageAnalysis]: Checked inductivity of 1137 backedges. 162 proven. 0 refuted. 0 times theorem prover too weak. 975 trivial. 0 not checked. [2022-11-02 20:26:40,505 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:26:40,505 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:26:40,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1004061750] [2022-11-02 20:26:40,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1004061750] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:26:40,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:26:40,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:26:40,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000324830] [2022-11-02 20:26:40,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:26:40,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:26:40,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:26:40,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:26:40,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:26:40,507 INFO L87 Difference]: Start difference. First operand 49908 states and 66800 transitions. Second operand has 5 states, 5 states have (on average 26.8) internal successors, (134), 5 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:41,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:26:41,340 INFO L93 Difference]: Finished difference Result 99702 states and 133471 transitions. [2022-11-02 20:26:41,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:26:41,340 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 5 states have internal predecessors, (134), 0 states have call successors, (0), 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 455 [2022-11-02 20:26:41,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:26:41,377 INFO L225 Difference]: With dead ends: 99702 [2022-11-02 20:26:41,377 INFO L226 Difference]: Without dead ends: 49900 [2022-11-02 20:26:41,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 451 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:26:41,398 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 216 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:26:41,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 445 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:26:41,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49900 states. [2022-11-02 20:26:42,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49900 to 49836. [2022-11-02 20:26:42,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49836 states, 49835 states have (on average 1.3387779672920639) internal successors, (66718), 49835 states have internal predecessors, (66718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:42,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49836 states to 49836 states and 66718 transitions. [2022-11-02 20:26:42,629 INFO L78 Accepts]: Start accepts. Automaton has 49836 states and 66718 transitions. Word has length 455 [2022-11-02 20:26:42,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:26:42,630 INFO L495 AbstractCegarLoop]: Abstraction has 49836 states and 66718 transitions. [2022-11-02 20:26:42,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 5 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:42,630 INFO L276 IsEmpty]: Start isEmpty. Operand 49836 states and 66718 transitions. [2022-11-02 20:26:42,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2022-11-02 20:26:42,676 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:26:42,676 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:26:42,698 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (57)] Ended with exit code 0 [2022-11-02 20:26:42,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:26:42,882 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:26:42,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:26:42,883 INFO L85 PathProgramCache]: Analyzing trace with hash 806517235, now seen corresponding path program 2 times [2022-11-02 20:26:42,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:26:42,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1361030306] [2022-11-02 20:26:42,885 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:26:42,885 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:26:42,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:26:42,886 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:26:42,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2022-11-02 20:26:43,756 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:26:43,756 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:26:43,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 2392 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-02 20:26:43,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:26:44,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1589 backedges. 582 proven. 32 refuted. 0 times theorem prover too weak. 975 trivial. 0 not checked. [2022-11-02 20:26:44,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:26:44,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1589 backedges. 582 proven. 32 refuted. 0 times theorem prover too weak. 975 trivial. 0 not checked. [2022-11-02 20:26:44,983 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:26:44,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1361030306] [2022-11-02 20:26:44,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1361030306] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:26:44,983 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:26:44,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-11-02 20:26:44,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796148669] [2022-11-02 20:26:44,984 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:26:44,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-02 20:26:44,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:26:44,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-02 20:26:44,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2022-11-02 20:26:44,986 INFO L87 Difference]: Start difference. First operand 49836 states and 66718 transitions. Second operand has 24 states, 24 states have (on average 12.958333333333334) internal successors, (311), 24 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:48,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:26:48,122 INFO L93 Difference]: Finished difference Result 103554 states and 138645 transitions. [2022-11-02 20:26:48,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-02 20:26:48,122 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 12.958333333333334) internal successors, (311), 24 states have internal predecessors, (311), 0 states have call successors, (0), 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 530 [2022-11-02 20:26:48,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:26:48,160 INFO L225 Difference]: With dead ends: 103554 [2022-11-02 20:26:48,160 INFO L226 Difference]: Without dead ends: 53824 [2022-11-02 20:26:48,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1092 GetRequests, 1036 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 705 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=747, Invalid=2559, Unknown=0, NotChecked=0, Total=3306 [2022-11-02 20:26:48,178 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 3317 mSDsluCounter, 2642 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3317 SdHoareTripleChecker+Valid, 2835 SdHoareTripleChecker+Invalid, 787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:26:48,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3317 Valid, 2835 Invalid, 787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 684 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-02 20:26:48,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53824 states. [2022-11-02 20:26:48,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53824 to 25476. [2022-11-02 20:26:48,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25476 states, 25475 states have (on average 1.3339352306182533) internal successors, (33982), 25475 states have internal predecessors, (33982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:48,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25476 states to 25476 states and 33982 transitions. [2022-11-02 20:26:48,808 INFO L78 Accepts]: Start accepts. Automaton has 25476 states and 33982 transitions. Word has length 530 [2022-11-02 20:26:48,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:26:48,808 INFO L495 AbstractCegarLoop]: Abstraction has 25476 states and 33982 transitions. [2022-11-02 20:26:48,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 12.958333333333334) internal successors, (311), 24 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:48,809 INFO L276 IsEmpty]: Start isEmpty. Operand 25476 states and 33982 transitions. [2022-11-02 20:26:48,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 606 [2022-11-02 20:26:48,825 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:26:48,825 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:26:48,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (58)] Forceful destruction successful, exit code 0 [2022-11-02 20:26:49,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:26:49,026 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:26:49,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:26:49,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1368573013, now seen corresponding path program 2 times [2022-11-02 20:26:49,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:26:49,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1901633951] [2022-11-02 20:26:49,028 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:26:49,028 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:26:49,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:26:49,029 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:26:49,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2022-11-02 20:26:49,878 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:26:49,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:26:49,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 2720 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:26:49,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:26:50,555 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 889 proven. 72 refuted. 0 times theorem prover too weak. 1155 trivial. 0 not checked. [2022-11-02 20:26:50,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:26:50,990 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 948 proven. 13 refuted. 0 times theorem prover too weak. 1155 trivial. 0 not checked. [2022-11-02 20:26:50,990 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:26:50,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1901633951] [2022-11-02 20:26:50,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1901633951] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:26:50,990 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:26:50,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2022-11-02 20:26:50,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108336057] [2022-11-02 20:26:50,991 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:26:50,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-02 20:26:50,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:26:50,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-02 20:26:50,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:26:50,994 INFO L87 Difference]: Start difference. First operand 25476 states and 33982 transitions. Second operand has 17 states, 17 states have (on average 18.294117647058822) internal successors, (311), 17 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:52,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:26:52,704 INFO L93 Difference]: Finished difference Result 77392 states and 103688 transitions. [2022-11-02 20:26:52,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-02 20:26:52,705 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 18.294117647058822) internal successors, (311), 17 states have internal predecessors, (311), 0 states have call successors, (0), 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 605 [2022-11-02 20:26:52,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:26:52,742 INFO L225 Difference]: With dead ends: 77392 [2022-11-02 20:26:52,742 INFO L226 Difference]: Without dead ends: 52022 [2022-11-02 20:26:52,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1221 GetRequests, 1193 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=223, Invalid=647, Unknown=0, NotChecked=0, Total=870 [2022-11-02 20:26:52,755 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 1412 mSDsluCounter, 1689 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1412 SdHoareTripleChecker+Valid, 1836 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:26:52,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1412 Valid, 1836 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:26:52,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52022 states. [2022-11-02 20:26:53,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52022 to 25604. [2022-11-02 20:26:53,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25604 states, 25603 states have (on average 1.3317970550326135) internal successors, (34098), 25603 states have internal predecessors, (34098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:53,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25604 states to 25604 states and 34098 transitions. [2022-11-02 20:26:53,302 INFO L78 Accepts]: Start accepts. Automaton has 25604 states and 34098 transitions. Word has length 605 [2022-11-02 20:26:53,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:26:53,303 INFO L495 AbstractCegarLoop]: Abstraction has 25604 states and 34098 transitions. [2022-11-02 20:26:53,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 18.294117647058822) internal successors, (311), 17 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:53,303 INFO L276 IsEmpty]: Start isEmpty. Operand 25604 states and 34098 transitions. [2022-11-02 20:26:53,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 606 [2022-11-02 20:26:53,327 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:26:53,327 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:26:53,360 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (59)] Forceful destruction successful, exit code 0 [2022-11-02 20:26:53,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:26:53,554 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:26:53,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:26:53,554 INFO L85 PathProgramCache]: Analyzing trace with hash -681155733, now seen corresponding path program 3 times [2022-11-02 20:26:53,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:26:53,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1174296916] [2022-11-02 20:26:53,556 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:26:53,556 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:26:53,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:26:53,557 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:26:53,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2022-11-02 20:26:54,053 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-02 20:26:54,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:26:54,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:26:54,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:26:54,109 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 506 proven. 0 refuted. 0 times theorem prover too weak. 1610 trivial. 0 not checked. [2022-11-02 20:26:54,109 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:26:54,110 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:26:54,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1174296916] [2022-11-02 20:26:54,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1174296916] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:26:54,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:26:54,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:26:54,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490485407] [2022-11-02 20:26:54,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:26:54,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:26:54,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:26:54,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:26:54,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:26:54,112 INFO L87 Difference]: Start difference. First operand 25604 states and 34098 transitions. Second operand has 5 states, 5 states have (on average 33.8) internal successors, (169), 5 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:54,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:26:54,877 INFO L93 Difference]: Finished difference Result 76548 states and 102027 transitions. [2022-11-02 20:26:54,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:26:54,878 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.8) internal successors, (169), 5 states have internal predecessors, (169), 0 states have call successors, (0), 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 605 [2022-11-02 20:26:54,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:26:54,922 INFO L225 Difference]: With dead ends: 76548 [2022-11-02 20:26:54,922 INFO L226 Difference]: Without dead ends: 63690 [2022-11-02 20:26:54,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 610 GetRequests, 604 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:26:54,932 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 604 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 604 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:26:54,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [604 Valid, 374 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:26:54,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63690 states. [2022-11-02 20:26:55,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63690 to 26164. [2022-11-02 20:26:55,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26164 states, 26163 states have (on average 1.3283644841952376) internal successors, (34754), 26163 states have internal predecessors, (34754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:55,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26164 states to 26164 states and 34754 transitions. [2022-11-02 20:26:55,639 INFO L78 Accepts]: Start accepts. Automaton has 26164 states and 34754 transitions. Word has length 605 [2022-11-02 20:26:55,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:26:55,639 INFO L495 AbstractCegarLoop]: Abstraction has 26164 states and 34754 transitions. [2022-11-02 20:26:55,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.8) internal successors, (169), 5 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:55,640 INFO L276 IsEmpty]: Start isEmpty. Operand 26164 states and 34754 transitions. [2022-11-02 20:26:55,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 606 [2022-11-02 20:26:55,655 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:26:55,656 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:26:55,667 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (60)] Forceful destruction successful, exit code 0 [2022-11-02 20:26:55,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:26:55,856 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:26:55,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:26:55,857 INFO L85 PathProgramCache]: Analyzing trace with hash -565451861, now seen corresponding path program 1 times [2022-11-02 20:26:55,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:26:55,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2144900709] [2022-11-02 20:26:55,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:26:55,860 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:26:55,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:26:55,861 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:26:55,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (61)] Waiting until timeout for monitored process [2022-11-02 20:26:56,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:26:56,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 2720 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:26:56,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:26:57,167 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 899 proven. 74 refuted. 0 times theorem prover too weak. 1143 trivial. 0 not checked. [2022-11-02 20:26:57,167 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:26:57,556 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 958 proven. 15 refuted. 0 times theorem prover too weak. 1143 trivial. 0 not checked. [2022-11-02 20:26:57,557 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:26:57,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2144900709] [2022-11-02 20:26:57,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2144900709] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:26:57,557 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:26:57,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2022-11-02 20:26:57,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407553138] [2022-11-02 20:26:57,558 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:26:57,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-02 20:26:57,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:26:57,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-02 20:26:57,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:26:57,559 INFO L87 Difference]: Start difference. First operand 26164 states and 34754 transitions. Second operand has 17 states, 17 states have (on average 18.470588235294116) internal successors, (314), 17 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:58,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:26:58,916 INFO L93 Difference]: Finished difference Result 49312 states and 66116 transitions. [2022-11-02 20:26:58,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-02 20:26:58,917 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 18.470588235294116) internal successors, (314), 17 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 605 [2022-11-02 20:26:58,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:26:58,942 INFO L225 Difference]: With dead ends: 49312 [2022-11-02 20:26:58,942 INFO L226 Difference]: Without dead ends: 35894 [2022-11-02 20:26:58,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1221 GetRequests, 1193 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=223, Invalid=647, Unknown=0, NotChecked=0, Total=870 [2022-11-02 20:26:58,949 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 1355 mSDsluCounter, 1591 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1355 SdHoareTripleChecker+Valid, 1742 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:26:58,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1355 Valid, 1742 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 20:26:58,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35894 states. [2022-11-02 20:26:59,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35894 to 22220. [2022-11-02 20:26:59,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22220 states, 22219 states have (on average 1.3383590620639993) internal successors, (29737), 22219 states have internal predecessors, (29737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:59,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22220 states to 22220 states and 29737 transitions. [2022-11-02 20:26:59,391 INFO L78 Accepts]: Start accepts. Automaton has 22220 states and 29737 transitions. Word has length 605 [2022-11-02 20:26:59,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:26:59,391 INFO L495 AbstractCegarLoop]: Abstraction has 22220 states and 29737 transitions. [2022-11-02 20:26:59,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 18.470588235294116) internal successors, (314), 17 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:26:59,391 INFO L276 IsEmpty]: Start isEmpty. Operand 22220 states and 29737 transitions. [2022-11-02 20:26:59,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 606 [2022-11-02 20:26:59,401 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:26:59,401 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:26:59,423 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (61)] Ended with exit code 0 [2022-11-02 20:26:59,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:26:59,602 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:26:59,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:26:59,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1826907221, now seen corresponding path program 1 times [2022-11-02 20:26:59,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:26:59,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1845380609] [2022-11-02 20:26:59,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:26:59,604 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:26:59,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:26:59,605 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:26:59,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2022-11-02 20:27:00,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:27:00,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 2720 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:27:00,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:27:01,178 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 990 proven. 104 refuted. 0 times theorem prover too weak. 1022 trivial. 0 not checked. [2022-11-02 20:27:01,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:27:01,576 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 990 proven. 104 refuted. 0 times theorem prover too weak. 1022 trivial. 0 not checked. [2022-11-02 20:27:01,576 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:27:01,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1845380609] [2022-11-02 20:27:01,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1845380609] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:27:01,577 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:27:01,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-11-02 20:27:01,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525395642] [2022-11-02 20:27:01,577 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:27:01,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:27:01,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:27:01,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:27:01,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:27:01,580 INFO L87 Difference]: Start difference. First operand 22220 states and 29737 transitions. Second operand has 11 states, 11 states have (on average 29.90909090909091) internal successors, (329), 11 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:27:02,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:27:02,598 INFO L93 Difference]: Finished difference Result 84888 states and 113698 transitions. [2022-11-02 20:27:02,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:27:02,599 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 29.90909090909091) internal successors, (329), 11 states have internal predecessors, (329), 0 states have call successors, (0), 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 605 [2022-11-02 20:27:02,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:27:02,639 INFO L225 Difference]: With dead ends: 84888 [2022-11-02 20:27:02,639 INFO L226 Difference]: Without dead ends: 62726 [2022-11-02 20:27:02,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1216 GetRequests, 1199 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:27:02,648 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 965 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 965 SdHoareTripleChecker+Valid, 856 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:27:02,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [965 Valid, 856 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:27:02,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62726 states. [2022-11-02 20:27:03,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62726 to 44380. [2022-11-02 20:27:03,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44380 states, 44379 states have (on average 1.3353613195430272) internal successors, (59262), 44379 states have internal predecessors, (59262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:27:03,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44380 states to 44380 states and 59262 transitions. [2022-11-02 20:27:03,753 INFO L78 Accepts]: Start accepts. Automaton has 44380 states and 59262 transitions. Word has length 605 [2022-11-02 20:27:03,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:27:03,753 INFO L495 AbstractCegarLoop]: Abstraction has 44380 states and 59262 transitions. [2022-11-02 20:27:03,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 29.90909090909091) internal successors, (329), 11 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:27:03,753 INFO L276 IsEmpty]: Start isEmpty. Operand 44380 states and 59262 transitions. [2022-11-02 20:27:03,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 606 [2022-11-02 20:27:03,780 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:27:03,781 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:27:03,810 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (62)] Forceful destruction successful, exit code 0 [2022-11-02 20:27:03,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:27:03,982 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:27:03,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:27:03,982 INFO L85 PathProgramCache]: Analyzing trace with hash -665566747, now seen corresponding path program 2 times [2022-11-02 20:27:03,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:27:03,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1411432215] [2022-11-02 20:27:03,984 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:27:03,985 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:27:03,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:27:03,986 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:27:03,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (63)] Waiting until timeout for monitored process [2022-11-02 20:27:04,921 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:27:04,921 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:27:04,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 2720 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-02 20:27:04,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:27:05,630 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 996 proven. 85 refuted. 0 times theorem prover too weak. 1035 trivial. 0 not checked. [2022-11-02 20:27:05,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:27:06,107 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 1078 proven. 3 refuted. 0 times theorem prover too weak. 1035 trivial. 0 not checked. [2022-11-02 20:27:06,107 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:27:06,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1411432215] [2022-11-02 20:27:06,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1411432215] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:27:06,107 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:27:06,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2022-11-02 20:27:06,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260867281] [2022-11-02 20:27:06,108 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:27:06,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-02 20:27:06,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:27:06,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-02 20:27:06,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-11-02 20:27:06,109 INFO L87 Difference]: Start difference. First operand 44380 states and 59262 transitions. Second operand has 15 states, 15 states have (on average 20.8) internal successors, (312), 15 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:27:06,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:27:06,454 INFO L93 Difference]: Finished difference Result 44710 states and 59640 transitions. [2022-11-02 20:27:06,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:27:06,455 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 20.8) internal successors, (312), 15 states have internal predecessors, (312), 0 states have call successors, (0), 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 605 [2022-11-02 20:27:06,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:27:06,455 INFO L225 Difference]: With dead ends: 44710 [2022-11-02 20:27:06,455 INFO L226 Difference]: Without dead ends: 0 [2022-11-02 20:27:06,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1213 GetRequests, 1194 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2022-11-02 20:27:06,467 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 456 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:27:06,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 477 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:27:06,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-02 20:27:06,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-02 20:27:06,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:27:06,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-02 20:27:06,468 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 605 [2022-11-02 20:27:06,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:27:06,468 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-02 20:27:06,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 20.8) internal successors, (312), 15 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:27:06,469 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-02 20:27:06,469 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-02 20:27:06,472 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-02 20:27:06,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (63)] Forceful destruction successful, exit code 0 [2022-11-02 20:27:06,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:27:06,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-02 20:27:11,503 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-02 20:27:11,503 INFO L899 garLoopResultBuilder]: For program point L251(line 251) no Hoare annotation was computed. [2022-11-02 20:27:11,504 INFO L899 garLoopResultBuilder]: For program point L251-2(line 251) no Hoare annotation was computed. [2022-11-02 20:27:11,504 INFO L899 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2022-11-02 20:27:11,504 INFO L899 garLoopResultBuilder]: For program point L20-1(line 20) no Hoare annotation was computed. [2022-11-02 20:27:11,504 INFO L899 garLoopResultBuilder]: For program point L20-3(line 20) no Hoare annotation was computed. [2022-11-02 20:27:11,504 INFO L899 garLoopResultBuilder]: For program point L367(line 367) no Hoare annotation was computed. [2022-11-02 20:27:11,504 INFO L899 garLoopResultBuilder]: For program point L334(line 334) no Hoare annotation was computed. [2022-11-02 20:27:11,504 INFO L899 garLoopResultBuilder]: For program point L301(line 301) no Hoare annotation was computed. [2022-11-02 20:27:11,504 INFO L899 garLoopResultBuilder]: For program point L367-2(line 367) no Hoare annotation was computed. [2022-11-02 20:27:11,504 INFO L899 garLoopResultBuilder]: For program point L268(line 268) no Hoare annotation was computed. [2022-11-02 20:27:11,504 INFO L899 garLoopResultBuilder]: For program point L334-2(line 334) no Hoare annotation was computed. [2022-11-02 20:27:11,505 INFO L899 garLoopResultBuilder]: For program point L301-2(line 301) no Hoare annotation was computed. [2022-11-02 20:27:11,505 INFO L899 garLoopResultBuilder]: For program point L268-2(line 268) no Hoare annotation was computed. [2022-11-02 20:27:11,505 INFO L899 garLoopResultBuilder]: For program point L318(line 318) no Hoare annotation was computed. [2022-11-02 20:27:11,505 INFO L899 garLoopResultBuilder]: For program point L285(line 285) no Hoare annotation was computed. [2022-11-02 20:27:11,505 INFO L899 garLoopResultBuilder]: For program point L318-2(line 318) no Hoare annotation was computed. [2022-11-02 20:27:11,505 INFO L899 garLoopResultBuilder]: For program point L285-2(line 285) no Hoare annotation was computed. [2022-11-02 20:27:11,506 INFO L899 garLoopResultBuilder]: For program point L203(line 203) no Hoare annotation was computed. [2022-11-02 20:27:11,506 INFO L899 garLoopResultBuilder]: For program point L203-2(line 203) no Hoare annotation was computed. [2022-11-02 20:27:11,506 INFO L899 garLoopResultBuilder]: For program point L352(line 352) no Hoare annotation was computed. [2022-11-02 20:27:11,506 INFO L899 garLoopResultBuilder]: For program point L352-2(line 352) no Hoare annotation was computed. [2022-11-02 20:27:11,507 INFO L899 garLoopResultBuilder]: For program point L220(line 220) no Hoare annotation was computed. [2022-11-02 20:27:11,507 INFO L899 garLoopResultBuilder]: For program point L187(line 187) no Hoare annotation was computed. [2022-11-02 20:27:11,507 INFO L899 garLoopResultBuilder]: For program point L220-2(line 220) no Hoare annotation was computed. [2022-11-02 20:27:11,507 INFO L899 garLoopResultBuilder]: For program point L187-2(line 187) no Hoare annotation was computed. [2022-11-02 20:27:11,507 INFO L899 garLoopResultBuilder]: For program point L238(line 238) no Hoare annotation was computed. [2022-11-02 20:27:11,507 INFO L899 garLoopResultBuilder]: For program point L238-2(line 238) no Hoare annotation was computed. [2022-11-02 20:27:11,507 INFO L899 garLoopResultBuilder]: For program point L255(line 255) no Hoare annotation was computed. [2022-11-02 20:27:11,507 INFO L899 garLoopResultBuilder]: For program point L255-2(line 255) no Hoare annotation was computed. [2022-11-02 20:27:11,507 INFO L899 garLoopResultBuilder]: For program point L371(line 371) no Hoare annotation was computed. [2022-11-02 20:27:11,507 INFO L899 garLoopResultBuilder]: For program point L338(line 338) no Hoare annotation was computed. [2022-11-02 20:27:11,507 INFO L899 garLoopResultBuilder]: For program point L371-2(line 371) no Hoare annotation was computed. [2022-11-02 20:27:11,508 INFO L899 garLoopResultBuilder]: For program point L272(line 272) no Hoare annotation was computed. [2022-11-02 20:27:11,508 INFO L899 garLoopResultBuilder]: For program point L338-2(line 338) no Hoare annotation was computed. [2022-11-02 20:27:11,508 INFO L899 garLoopResultBuilder]: For program point L272-2(line 272) no Hoare annotation was computed. [2022-11-02 20:27:11,508 INFO L899 garLoopResultBuilder]: For program point L322(line 322) no Hoare annotation was computed. [2022-11-02 20:27:11,508 INFO L899 garLoopResultBuilder]: For program point L289(line 289) no Hoare annotation was computed. [2022-11-02 20:27:11,508 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-02 20:27:11,508 INFO L899 garLoopResultBuilder]: For program point L322-2(line 322) no Hoare annotation was computed. [2022-11-02 20:27:11,508 INFO L899 garLoopResultBuilder]: For program point L289-2(line 289) no Hoare annotation was computed. [2022-11-02 20:27:11,508 INFO L899 garLoopResultBuilder]: For program point L224(line 224) no Hoare annotation was computed. [2022-11-02 20:27:11,508 INFO L899 garLoopResultBuilder]: For program point L191(line 191) no Hoare annotation was computed. [2022-11-02 20:27:11,508 INFO L899 garLoopResultBuilder]: For program point L224-2(line 224) no Hoare annotation was computed. [2022-11-02 20:27:11,509 INFO L899 garLoopResultBuilder]: For program point L191-2(line 191) no Hoare annotation was computed. [2022-11-02 20:27:11,509 INFO L899 garLoopResultBuilder]: For program point L307(line 307) no Hoare annotation was computed. [2022-11-02 20:27:11,509 INFO L899 garLoopResultBuilder]: For program point L307-2(line 307) no Hoare annotation was computed. [2022-11-02 20:27:11,509 INFO L895 garLoopResultBuilder]: At program point L391(lines 22 392) the Hoare annotation is: false [2022-11-02 20:27:11,509 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-02 20:27:11,510 INFO L899 garLoopResultBuilder]: For program point L375(line 375) no Hoare annotation was computed. [2022-11-02 20:27:11,510 INFO L899 garLoopResultBuilder]: For program point L342(line 342) no Hoare annotation was computed. [2022-11-02 20:27:11,510 INFO L899 garLoopResultBuilder]: For program point L375-2(line 375) no Hoare annotation was computed. [2022-11-02 20:27:11,510 INFO L899 garLoopResultBuilder]: For program point L342-2(line 342) no Hoare annotation was computed. [2022-11-02 20:27:11,510 INFO L899 garLoopResultBuilder]: For program point L228(line 228) no Hoare annotation was computed. [2022-11-02 20:27:11,510 INFO L899 garLoopResultBuilder]: For program point L195(line 195) no Hoare annotation was computed. [2022-11-02 20:27:11,511 INFO L899 garLoopResultBuilder]: For program point L228-2(line 228) no Hoare annotation was computed. [2022-11-02 20:27:11,511 INFO L899 garLoopResultBuilder]: For program point L195-2(line 195) no Hoare annotation was computed. [2022-11-02 20:27:11,511 INFO L899 garLoopResultBuilder]: For program point L212(line 212) no Hoare annotation was computed. [2022-11-02 20:27:11,511 INFO L899 garLoopResultBuilder]: For program point L212-2(line 212) no Hoare annotation was computed. [2022-11-02 20:27:11,512 INFO L895 garLoopResultBuilder]: At program point L113-2(lines 113 390) the Hoare annotation is: (let ((.cse69 ((_ extract 7 0) ((_ zero_extend 24) |ULTIMATE.start_main_~var_7~0#1|)))) (let ((.cse70 ((_ extract 7 0) ((_ zero_extend 24) .cse69)))) (let ((.cse68 ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) .cse70))) (_ bv1 32))))) (let ((.cse14 (= |ULTIMATE.start_main_~var_148_arg_0~0#1| (_ bv0 8))) (.cse0 (= (_ bv1 8) |ULTIMATE.start_main_~mask_SORT_1~0#1|)) (.cse15 (= (_ bv0 8) |ULTIMATE.start_main_~var_96_arg_0~0#1|)) (.cse16 (= (_ bv0 8) |ULTIMATE.start_main_~var_105_arg_1~0#1|)) (.cse17 (= |ULTIMATE.start_main_~var_118_arg_0~0#1| (_ bv0 8))) (.cse18 (= |ULTIMATE.start_main_~var_139_arg_0~0#1| (_ bv0 8))) (.cse19 (= |ULTIMATE.start_main_~var_112_arg_2~0#1| .cse70)) (.cse20 (= |ULTIMATE.start_main_~var_137_arg_0~0#1| (_ bv0 8))) (.cse21 (= |ULTIMATE.start_main_~var_83_arg_0~0#1| |ULTIMATE.start_main_~var_82~0#1|)) (.cse22 (= |ULTIMATE.start_main_~var_122_arg_1~0#1| (_ bv0 8))) (.cse23 (= |ULTIMATE.start_main_~var_103_arg_2~0#1| (_ bv0 8))) (.cse24 (= |ULTIMATE.start_main_~var_98_arg_0~0#1| (_ bv0 8))) (.cse25 (= |ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32))) (.cse26 (= |ULTIMATE.start_main_~var_94_arg_0~0#1| (_ bv0 8))) (.cse1 (= (_ bv0 8) |ULTIMATE.start_main_~state_65~0#1|)) (.cse27 (= |ULTIMATE.start_main_~var_124~0#1| (_ bv0 8))) (.cse28 (= (_ bv0 8) |ULTIMATE.start_main_~var_115_arg_0~0#1|)) (.cse29 (= (_ bv1 8) |ULTIMATE.start_main_~var_98_arg_2~0#1|)) (.cse30 (= |ULTIMATE.start_main_~var_139_arg_2~0#1| (_ bv0 8))) (.cse31 (= |ULTIMATE.start_main_~var_97_arg_0~0#1| (_ bv0 8))) (.cse32 (= |ULTIMATE.start_main_~next_88_arg_1~0#1| (_ bv0 8))) (.cse33 (= |ULTIMATE.start_main_~var_147_arg_0~0#1| (_ bv0 8))) (.cse34 (= |ULTIMATE.start_main_~var_82~0#1| (_ bv0 8))) (.cse35 (= |ULTIMATE.start_main_~var_109_arg_2~0#1| |ULTIMATE.start_main_~var_7~0#1|)) (.cse36 (= |ULTIMATE.start_main_~next_107_arg_1~0#1| (_ bv0 8))) (.cse2 (= |ULTIMATE.start_main_~state_8~0#1| (_ bv0 8))) (.cse37 (not (= (_ bv0 8) |ULTIMATE.start_main_~var_105_arg_0~0#1|))) (.cse38 (= |ULTIMATE.start_main_~var_79_arg_0~0#1| (_ bv0 8))) (.cse3 (= (_ bv1023 16) |ULTIMATE.start_main_~mask_SORT_71~0#1|)) (.cse39 (= |ULTIMATE.start_main_~var_111_arg_1~0#1| .cse69)) (.cse4 (= (_ bv1 8) |ULTIMATE.start_main_~var_20~0#1|)) (.cse5 (= (_ bv0 8) |ULTIMATE.start_main_~state_30~0#1|)) (.cse40 (= (_ bv0 8) |ULTIMATE.start_main_~var_100_arg_1~0#1|)) (.cse6 (= (_ bv0 8) |ULTIMATE.start_main_~state_63~0#1|)) (.cse41 (= |ULTIMATE.start_main_~var_112_arg_0~0#1| (_ bv0 8))) (.cse42 (= |ULTIMATE.start_main_~var_136_arg_0~0#1| (_ bv0 8))) (.cse43 (= |ULTIMATE.start_main_~var_103_arg_2~0#1| |ULTIMATE.start_main_~var_7~0#1|)) (.cse44 (= (_ bv0 16) |ULTIMATE.start_main_~var_148_arg_2~0#1|)) (.cse7 (= (_ bv0 8) |ULTIMATE.start_main_~state_28~0#1|)) (.cse45 (= .cse68 |ULTIMATE.start_main_~next_113_arg_1~0#1|)) (.cse46 (= |ULTIMATE.start_main_~next_121_arg_1~0#1| (_ bv0 8))) (.cse47 (= |ULTIMATE.start_main_~var_93_arg_0~0#1| (_ bv0 8))) (.cse48 (= |ULTIMATE.start_main_~var_106_arg_0~0#1| (_ bv0 8))) (.cse8 (= .cse68 |ULTIMATE.start_main_~state_44~0#1|)) (.cse49 (= |ULTIMATE.start_main_~var_120_arg_0~0#1| (_ bv0 8))) (.cse9 (= (_ bv1 8) |ULTIMATE.start_main_~state_16~0#1|)) (.cse50 (= |ULTIMATE.start_main_~var_85_arg_0~0#1| (_ bv0 8))) (.cse51 (= |ULTIMATE.start_main_~var_109_arg_0~0#1| (_ bv0 8))) (.cse52 (= |ULTIMATE.start_main_~var_137_arg_2~0#1| (_ bv0 8))) (.cse53 (= |ULTIMATE.start_main_~var_122_arg_2~0#1| (_ bv0 8))) (.cse54 (= |ULTIMATE.start_main_~var_124_arg_2~0#1| (_ bv0 8))) (.cse55 (= |ULTIMATE.start_main_~next_138_arg_1~0#1| (_ bv0 8))) (.cse56 (= |ULTIMATE.start_main_~var_106_arg_2~0#1| (_ bv0 8))) (.cse57 (= |ULTIMATE.start_main_~var_87_arg_0~0#1| (_ bv0 8))) (.cse10 (= (_ bv104 32) |ULTIMATE.start_main_~var_81~0#1|)) (.cse11 (= (_ bv0 8) |ULTIMATE.start_main_~state_59~0#1|)) (.cse58 (= ((_ extract 7 0) (bvand (_ bv1 32) ((_ zero_extend 24) |ULTIMATE.start_main_~mask_SORT_1~0#1|))) |ULTIMATE.start_main_~next_99_arg_1~0#1|)) (.cse59 (= |ULTIMATE.start_main_~var_103_arg_0~0#1| (_ bv0 8))) (.cse60 (= (_ bv0 8) |ULTIMATE.start_main_~var_86_arg_0~0#1|)) (.cse61 (= |ULTIMATE.start_main_~next_140_arg_1~0#1| (_ bv0 8))) (.cse62 (= |ULTIMATE.start_main_~var_87_arg_2~0#1| (_ bv0 8))) (.cse63 (= |ULTIMATE.start_main_~var_120_arg_2~0#1| (_ bv0 8))) (.cse64 (= |ULTIMATE.start_main_~var_124_arg_0~0#1| (_ bv0 8))) (.cse12 (= (_ bv0 8) |ULTIMATE.start_main_~state_61~0#1|)) (.cse65 (= |ULTIMATE.start_main_~next_123_arg_1~0#1| (_ bv0 8))) (.cse13 (= (_ bv0 16) |ULTIMATE.start_main_~state_73~0#1|)) (.cse66 (= |ULTIMATE.start_main_~var_84_arg_0~0#1| (_ bv0 8))) (.cse67 (not (= |ULTIMATE.start_main_~var_111_arg_0~0#1| (_ bv0 8))))) (or (and .cse0 .cse1 .cse2 .cse3 (= (_ bv0 8) |ULTIMATE.start_main_~state_46~0#1|) .cse4 .cse5 .cse6 (= |ULTIMATE.start_main_~var_7~0#1| (_ bv0 8)) .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13) (and .cse14 .cse0 .cse15 .cse16 .cse17 .cse18 .cse19 .cse20 .cse21 .cse22 .cse23 .cse24 .cse25 .cse26 .cse1 .cse27 .cse28 .cse29 .cse30 .cse31 (= (_ bv0 8) |ULTIMATE.start_main_~var_100_arg_0~0#1|) .cse32 .cse33 .cse34 .cse35 .cse36 .cse2 .cse37 .cse38 .cse3 .cse39 .cse4 .cse5 .cse40 .cse6 .cse41 .cse42 .cse43 .cse44 .cse45 .cse46 .cse47 .cse48 .cse8 .cse49 .cse9 .cse50 .cse51 .cse52 .cse53 .cse54 .cse55 .cse56 .cse57 .cse10 .cse11 .cse58 .cse59 .cse60 .cse61 .cse62 .cse63 .cse64 .cse12 .cse65 .cse13 .cse66 .cse67) (and .cse14 .cse0 .cse15 .cse16 .cse17 .cse18 .cse19 .cse20 .cse21 .cse22 .cse23 .cse24 .cse25 .cse26 .cse1 .cse27 .cse28 .cse29 .cse30 .cse31 (= |ULTIMATE.start_main_~next_101_arg_1~0#1| (_ bv0 8)) .cse32 .cse33 .cse34 .cse35 .cse36 .cse2 .cse37 .cse38 .cse3 .cse39 .cse4 .cse5 .cse40 .cse6 .cse41 .cse42 .cse43 .cse44 .cse7 .cse45 .cse46 .cse47 .cse48 .cse8 .cse49 .cse9 .cse50 .cse51 .cse52 .cse53 .cse54 .cse55 .cse56 .cse57 .cse10 .cse11 .cse58 .cse59 .cse60 .cse61 .cse62 .cse63 .cse64 .cse12 .cse65 .cse13 .cse66 .cse67)))))) [2022-11-02 20:27:11,512 INFO L899 garLoopResultBuilder]: For program point L113-3(lines 113 390) no Hoare annotation was computed. [2022-11-02 20:27:11,512 INFO L899 garLoopResultBuilder]: For program point L295(line 295) no Hoare annotation was computed. [2022-11-02 20:27:11,512 INFO L899 garLoopResultBuilder]: For program point L295-2(line 295) no Hoare annotation was computed. [2022-11-02 20:27:11,512 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-02 20:27:11,512 INFO L899 garLoopResultBuilder]: For program point L346(line 346) no Hoare annotation was computed. [2022-11-02 20:27:11,512 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 20) no Hoare annotation was computed. [2022-11-02 20:27:11,513 INFO L899 garLoopResultBuilder]: For program point L346-2(line 346) no Hoare annotation was computed. [2022-11-02 20:27:11,513 INFO L899 garLoopResultBuilder]: For program point L247(line 247) no Hoare annotation was computed. [2022-11-02 20:27:11,513 INFO L899 garLoopResultBuilder]: For program point L247-2(line 247) no Hoare annotation was computed. [2022-11-02 20:27:11,513 INFO L899 garLoopResultBuilder]: For program point L264(line 264) no Hoare annotation was computed. [2022-11-02 20:27:11,513 INFO L899 garLoopResultBuilder]: For program point L264-2(line 264) no Hoare annotation was computed. [2022-11-02 20:27:11,513 INFO L899 garLoopResultBuilder]: For program point L314(line 314) no Hoare annotation was computed. [2022-11-02 20:27:11,513 INFO L899 garLoopResultBuilder]: For program point L281(line 281) no Hoare annotation was computed. [2022-11-02 20:27:11,514 INFO L899 garLoopResultBuilder]: For program point L314-2(line 314) no Hoare annotation was computed. [2022-11-02 20:27:11,514 INFO L899 garLoopResultBuilder]: For program point L281-2(line 281) no Hoare annotation was computed. [2022-11-02 20:27:11,514 INFO L899 garLoopResultBuilder]: For program point L232(line 232) no Hoare annotation was computed. [2022-11-02 20:27:11,514 INFO L899 garLoopResultBuilder]: For program point L199(line 199) no Hoare annotation was computed. [2022-11-02 20:27:11,514 INFO L899 garLoopResultBuilder]: For program point L232-2(line 232) no Hoare annotation was computed. [2022-11-02 20:27:11,514 INFO L899 garLoopResultBuilder]: For program point L199-2(line 199) no Hoare annotation was computed. [2022-11-02 20:27:11,515 INFO L899 garLoopResultBuilder]: For program point L216(line 216) no Hoare annotation was computed. [2022-11-02 20:27:11,515 INFO L899 garLoopResultBuilder]: For program point L183(line 183) no Hoare annotation was computed. [2022-11-02 20:27:11,515 INFO L899 garLoopResultBuilder]: For program point L216-2(line 216) no Hoare annotation was computed. [2022-11-02 20:27:11,515 INFO L899 garLoopResultBuilder]: For program point L183-2(line 183) no Hoare annotation was computed. [2022-11-02 20:27:11,519 INFO L444 BasicCegarLoop]: Path program histogram: [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:27:11,521 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 20:27:11,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 08:27:11 BoogieIcfgContainer [2022-11-02 20:27:11,548 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 20:27:11,549 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 20:27:11,549 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 20:27:11,549 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 20:27:11,550 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:24:55" (3/4) ... [2022-11-02 20:27:11,554 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-02 20:27:11,573 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-02 20:27:11,575 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-02 20:27:11,576 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-02 20:27:11,638 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.witnessprinter has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSLBacktranslationValueProvider.getStringFromIASTNode(CACSLBacktranslationValueProvider.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSLBacktranslationValueProvider.getStringFromStep(CACSLBacktranslationValueProvider.java:59) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSLBacktranslationValueProvider.getStringFromStep(CACSLBacktranslationValueProvider.java:1) at de.uni_freiburg.informatik.ultimate.witnessprinter.graphml.GeneratedWitnessEdge.getSourceCode(GeneratedWitnessEdge.java:153) at de.uni_freiburg.informatik.ultimate.witnessprinter.CorrectnessWitnessGenerator.lambda$2(CorrectnessWitnessGenerator.java:95) at edu.uci.ics.jung.io.GraphMLWriter.writeEdgeData(GraphMLWriter.java:237) at de.uni_freiburg.informatik.ultimate.witnessprinter.graphml.UltimateGraphMLWriter.save(UltimateGraphMLWriter.java:106) at de.uni_freiburg.informatik.ultimate.witnessprinter.CorrectnessWitnessGenerator.makeGraphMLString(CorrectnessWitnessGenerator.java:115) at de.uni_freiburg.informatik.ultimate.witnessprinter.WitnessPrinter.generateProofWitness(WitnessPrinter.java:158) at de.uni_freiburg.informatik.ultimate.witnessprinter.WitnessPrinter.finish(WitnessPrinter.java:138) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:131) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-02 20:27:11,641 INFO L158 Benchmark]: Toolchain (without parser) took 138384.86ms. Allocated memory was 71.3MB in the beginning and 12.1GB in the end (delta: 12.0GB). Free memory was 46.7MB in the beginning and 10.8GB in the end (delta: -10.8GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2022-11-02 20:27:11,642 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 52.4MB. Free memory is still 32.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:27:11,642 INFO L158 Benchmark]: CACSL2BoogieTranslator took 642.49ms. Allocated memory is still 71.3MB. Free memory was 46.6MB in the beginning and 48.6MB in the end (delta: -2.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-02 20:27:11,642 INFO L158 Benchmark]: Boogie Procedure Inliner took 114.38ms. Allocated memory is still 71.3MB. Free memory was 48.6MB in the beginning and 44.7MB in the end (delta: 3.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-02 20:27:11,642 INFO L158 Benchmark]: Boogie Preprocessor took 100.91ms. Allocated memory is still 71.3MB. Free memory was 44.7MB in the beginning and 41.8MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:27:11,643 INFO L158 Benchmark]: RCFGBuilder took 1283.51ms. Allocated memory was 71.3MB in the beginning and 96.5MB in the end (delta: 25.2MB). Free memory was 41.8MB in the beginning and 70.4MB in the end (delta: -28.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-02 20:27:11,643 INFO L158 Benchmark]: TraceAbstraction took 136142.39ms. Allocated memory was 96.5MB in the beginning and 12.1GB in the end (delta: 12.0GB). Free memory was 69.9MB in the beginning and 10.9GB in the end (delta: -10.8GB). Peak memory consumption was 2.0GB. Max. memory is 16.1GB. [2022-11-02 20:27:11,643 INFO L158 Benchmark]: Witness Printer took 91.92ms. Allocated memory is still 12.1GB. Free memory was 10.9GB in the beginning and 10.8GB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-02 20:27:11,644 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 52.4MB. Free memory is still 32.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 642.49ms. Allocated memory is still 71.3MB. Free memory was 46.6MB in the beginning and 48.6MB in the end (delta: -2.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 114.38ms. Allocated memory is still 71.3MB. Free memory was 48.6MB in the beginning and 44.7MB in the end (delta: 3.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 100.91ms. Allocated memory is still 71.3MB. Free memory was 44.7MB in the beginning and 41.8MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1283.51ms. Allocated memory was 71.3MB in the beginning and 96.5MB in the end (delta: 25.2MB). Free memory was 41.8MB in the beginning and 70.4MB in the end (delta: -28.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 136142.39ms. Allocated memory was 96.5MB in the beginning and 12.1GB in the end (delta: 12.0GB). Free memory was 69.9MB in the beginning and 10.9GB in the end (delta: -10.8GB). Peak memory consumption was 2.0GB. Max. memory is 16.1GB. * Witness Printer took 91.92ms. Allocated memory is still 12.1GB. Free memory was 10.9GB in the beginning and 10.8GB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 20]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 83 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 136.0s, OverallIterations: 62, TraceHistogramMax: 9, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.4s, AutomataDifference: 48.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 4.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 51587 SdHoareTripleChecker+Valid, 17.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 51587 mSDsluCounter, 71184 SdHoareTripleChecker+Invalid, 14.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 120 IncrementalHoareTripleChecker+Unchecked, 61669 mSDsCounter, 1220 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 13475 IncrementalHoareTripleChecker+Invalid, 14815 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1220 mSolverCounterUnsat, 9515 mSDtfsCounter, 13475 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 20061 GetRequests, 19022 SyntacticMatches, 6 SemanticMatches, 1033 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6989 ImplicationChecksByTransitivity, 18.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=67652occurred in iteration=53, InterpolantAutomatonStates: 812, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 14.7s AutomataMinimizationTime, 62 MinimizatonAttempts, 463551 StatesRemovedByMinimization, 61 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 11 NumberOfFragments, 538 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 1.7s HoareSimplificationTime, 2 FomulaSimplificationsInter, 186309 FormulaSimplificationTreeSizeReductionInter, 3.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 6.0s SsaConstructionTime, 11.8s SatisfiabilityAnalysisTime, 31.7s InterpolantComputationTime, 11560 NumberOfCodeBlocks, 10885 NumberOfCodeBlocksAsserted, 70 NumberOfCheckSat, 19493 ConstructedInterpolants, 76 QuantifiedInterpolants, 65232 SizeOfPredicates, 470 NumberOfNonLiveVariables, 52200 ConjunctsInSsa, 646 ConjunctsInUnsatCore, 92 InterpolantComputations, 32 PerfectInterpolantSequences, 31672/33510 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 113]: Loop Invariant Derived loop invariant: ((((((((((((((((1bv8 == mask_SORT_1 && 0bv8 == state_65) && state_8 == 0bv8) && 1023bv16 == mask_SORT_71) && 0bv8 == state_46) && 1bv8 == var_20) && 0bv8 == state_30) && 0bv8 == state_63) && var_7 == 0bv8) && 0bv8 == state_28) && ~bvand32(~zero_extendFrom16To32(~zero_extendFrom16To32(~zero_extendFrom16To32(~zero_extendFrom16To32(var_7)[7:0])[7:0])[7:0]), 1bv32)[7:0] == state_44) && 1bv8 == state_16) && 104bv32 == var_81) && 0bv8 == state_59) && 0bv8 == state_61) && 0bv16 == state_73) || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((var_148_arg_0 == 0bv8 && 1bv8 == mask_SORT_1) && 0bv8 == var_96_arg_0) && 0bv8 == var_105_arg_1) && var_118_arg_0 == 0bv8) && var_139_arg_0 == 0bv8) && var_112_arg_2 == ~zero_extendFrom16To32(~zero_extendFrom16To32(var_7)[7:0])[7:0]) && var_137_arg_0 == 0bv8) && var_83_arg_0 == var_82) && var_122_arg_1 == 0bv8) && var_103_arg_2 == 0bv8) && var_98_arg_0 == 0bv8) && cond == 1bv32) && var_94_arg_0 == 0bv8) && 0bv8 == state_65) && var_124 == 0bv8) && 0bv8 == var_115_arg_0) && 1bv8 == var_98_arg_2) && var_139_arg_2 == 0bv8) && var_97_arg_0 == 0bv8) && 0bv8 == var_100_arg_0) && next_88_arg_1 == 0bv8) && var_147_arg_0 == 0bv8) && var_82 == 0bv8) && var_109_arg_2 == var_7) && next_107_arg_1 == 0bv8) && state_8 == 0bv8) && !(0bv8 == var_105_arg_0)) && var_79_arg_0 == 0bv8) && 1023bv16 == mask_SORT_71) && var_111_arg_1 == ~zero_extendFrom16To32(var_7)[7:0]) && 1bv8 == var_20) && 0bv8 == state_30) && 0bv8 == var_100_arg_1) && 0bv8 == state_63) && var_112_arg_0 == 0bv8) && var_136_arg_0 == 0bv8) && var_103_arg_2 == var_7) && 0bv16 == var_148_arg_2) && ~bvand32(~zero_extendFrom16To32(~zero_extendFrom16To32(~zero_extendFrom16To32(~zero_extendFrom16To32(var_7)[7:0])[7:0])[7:0]), 1bv32)[7:0] == next_113_arg_1) && next_121_arg_1 == 0bv8) && var_93_arg_0 == 0bv8) && var_106_arg_0 == 0bv8) && ~bvand32(~zero_extendFrom16To32(~zero_extendFrom16To32(~zero_extendFrom16To32(~zero_extendFrom16To32(var_7)[7:0])[7:0])[7:0]), 1bv32)[7:0] == state_44) && var_120_arg_0 == 0bv8) && 1bv8 == state_16) && var_85_arg_0 == 0bv8) && var_109_arg_0 == 0bv8) && var_137_arg_2 == 0bv8) && var_122_arg_2 == 0bv8) && var_124_arg_2 == 0bv8) && next_138_arg_1 == 0bv8) && var_106_arg_2 == 0bv8) && var_87_arg_0 == 0bv8) && 104bv32 == var_81) && 0bv8 == state_59) && ~bvand32(1bv32, ~zero_extendFrom16To32(mask_SORT_1))[7:0] == next_99_arg_1) && var_103_arg_0 == 0bv8) && 0bv8 == var_86_arg_0) && next_140_arg_1 == 0bv8) && var_87_arg_2 == 0bv8) && var_120_arg_2 == 0bv8) && var_124_arg_0 == 0bv8) && 0bv8 == state_61) && next_123_arg_1 == 0bv8) && 0bv16 == state_73) && var_84_arg_0 == 0bv8) && !(var_111_arg_0 == 0bv8))) || ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((var_148_arg_0 == 0bv8 && 1bv8 == mask_SORT_1) && 0bv8 == var_96_arg_0) && 0bv8 == var_105_arg_1) && var_118_arg_0 == 0bv8) && var_139_arg_0 == 0bv8) && var_112_arg_2 == ~zero_extendFrom16To32(~zero_extendFrom16To32(var_7)[7:0])[7:0]) && var_137_arg_0 == 0bv8) && var_83_arg_0 == var_82) && var_122_arg_1 == 0bv8) && var_103_arg_2 == 0bv8) && var_98_arg_0 == 0bv8) && cond == 1bv32) && var_94_arg_0 == 0bv8) && 0bv8 == state_65) && var_124 == 0bv8) && 0bv8 == var_115_arg_0) && 1bv8 == var_98_arg_2) && var_139_arg_2 == 0bv8) && var_97_arg_0 == 0bv8) && next_101_arg_1 == 0bv8) && next_88_arg_1 == 0bv8) && var_147_arg_0 == 0bv8) && var_82 == 0bv8) && var_109_arg_2 == var_7) && next_107_arg_1 == 0bv8) && state_8 == 0bv8) && !(0bv8 == var_105_arg_0)) && var_79_arg_0 == 0bv8) && 1023bv16 == mask_SORT_71) && var_111_arg_1 == ~zero_extendFrom16To32(var_7)[7:0]) && 1bv8 == var_20) && 0bv8 == state_30) && 0bv8 == var_100_arg_1) && 0bv8 == state_63) && var_112_arg_0 == 0bv8) && var_136_arg_0 == 0bv8) && var_103_arg_2 == var_7) && 0bv16 == var_148_arg_2) && 0bv8 == state_28) && ~bvand32(~zero_extendFrom16To32(~zero_extendFrom16To32(~zero_extendFrom16To32(~zero_extendFrom16To32(var_7)[7:0])[7:0])[7:0]), 1bv32)[7:0] == next_113_arg_1) && next_121_arg_1 == 0bv8) && var_93_arg_0 == 0bv8) && var_106_arg_0 == 0bv8) && ~bvand32(~zero_extendFrom16To32(~zero_extendFrom16To32(~zero_extendFrom16To32(~zero_extendFrom16To32(var_7)[7:0])[7:0])[7:0]), 1bv32)[7:0] == state_44) && var_120_arg_0 == 0bv8) && 1bv8 == state_16) && var_85_arg_0 == 0bv8) && var_109_arg_0 == 0bv8) && var_137_arg_2 == 0bv8) && var_122_arg_2 == 0bv8) && var_124_arg_2 == 0bv8) && next_138_arg_1 == 0bv8) && var_106_arg_2 == 0bv8) && var_87_arg_0 == 0bv8) && 104bv32 == var_81) && 0bv8 == state_59) && ~bvand32(1bv32, ~zero_extendFrom16To32(mask_SORT_1))[7:0] == next_99_arg_1) && var_103_arg_0 == 0bv8) && 0bv8 == var_86_arg_0) && next_140_arg_1 == 0bv8) && var_87_arg_2 == 0bv8) && var_120_arg_2 == 0bv8) && var_124_arg_0 == 0bv8) && 0bv8 == state_61) && next_123_arg_1 == 0bv8) && 0bv16 == state_73) && var_84_arg_0 == 0bv8) && !(var_111_arg_0 == 0bv8)) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 0 * Results from de.uni_freiburg.informatik.ultimate.witnessprinter: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.witnessprinter: NullPointerException: null: de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSLBacktranslationValueProvider.getStringFromIASTNode(CACSLBacktranslationValueProvider.java:78) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-02 20:27:11,709 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c2fd125-4841-4a0c-a253-734b438c8797/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: NullPointerException: null