./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.miim.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/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_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.miim.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/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_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/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 ae120e442d3333a3829560b2dc4c79b941b2f5347f398389c9ef7ff85802ce4e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 21:07:01,145 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:07:01,151 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:07:01,204 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:07:01,205 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:07:01,208 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:07:01,210 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:07:01,215 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:07:01,217 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:07:01,222 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:07:01,223 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:07:01,225 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:07:01,226 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:07:01,228 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:07:01,230 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:07:01,232 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:07:01,233 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:07:01,234 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:07:01,236 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:07:01,244 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:07:01,247 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:07:01,248 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:07:01,252 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:07:01,253 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:07:01,258 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:07:01,263 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:07:01,264 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:07:01,265 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:07:01,266 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:07:01,267 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:07:01,268 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:07:01,269 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:07:01,271 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:07:01,272 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:07:01,274 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:07:01,275 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:07:01,276 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:07:01,276 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:07:01,276 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:07:01,277 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:07:01,278 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:07:01,279 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-02 21:07:01,321 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:07:01,322 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:07:01,322 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:07:01,322 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:07:01,323 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:07:01,323 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:07:01,324 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:07:01,325 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:07:01,325 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:07:01,325 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:07:01,326 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:07:01,326 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:07:01,327 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:07:01,327 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:07:01,327 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:07:01,327 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:07:01,327 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:07:01,328 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:07:01,328 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:07:01,328 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:07:01,328 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:07:01,328 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:07:01,329 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:07:01,329 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:07:01,329 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:07:01,329 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:07:01,330 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 21:07:01,330 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:07:01,330 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:07:01,330 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:07:01,330 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_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ae120e442d3333a3829560b2dc4c79b941b2f5347f398389c9ef7ff85802ce4e [2022-11-02 21:07:01,624 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:07:01,652 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:07:01,655 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:07:01,656 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:07:01,658 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:07:01,660 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.miim.c [2022-11-02 21:07:01,729 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/data/a0062510d/c37055f87b8243e9bc3e0ca722e44276/FLAG8cadc579f [2022-11-02 21:07:02,298 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:07:02,299 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.miim.c [2022-11-02 21:07:02,312 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/data/a0062510d/c37055f87b8243e9bc3e0ca722e44276/FLAG8cadc579f [2022-11-02 21:07:02,570 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/data/a0062510d/c37055f87b8243e9bc3e0ca722e44276 [2022-11-02 21:07:02,572 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:07:02,574 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:07:02,575 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:07:02,576 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:07:02,580 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:07:02,580 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:07:02" (1/1) ... [2022-11-02 21:07:02,582 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b673782 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:02, skipping insertion in model container [2022-11-02 21:07:02,582 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:07:02" (1/1) ... [2022-11-02 21:07:02,589 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:07:02,636 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:07:02,867 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_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.miim.c[1107,1120] [2022-11-02 21:07:03,126 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:07:03,129 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:07:03,139 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_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.miim.c[1107,1120] [2022-11-02 21:07:03,222 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:07:03,254 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:07:03,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:03 WrapperNode [2022-11-02 21:07:03,254 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:07:03,255 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:07:03,256 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:07:03,256 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:07:03,263 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:03" (1/1) ... [2022-11-02 21:07:03,287 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:03" (1/1) ... [2022-11-02 21:07:03,357 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1338 [2022-11-02 21:07:03,357 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:07:03,358 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:07:03,358 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:07:03,358 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:07:03,367 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:03" (1/1) ... [2022-11-02 21:07:03,367 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:03" (1/1) ... [2022-11-02 21:07:03,380 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:03" (1/1) ... [2022-11-02 21:07:03,381 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:03" (1/1) ... [2022-11-02 21:07:03,416 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:03" (1/1) ... [2022-11-02 21:07:03,435 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:03" (1/1) ... [2022-11-02 21:07:03,445 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:03" (1/1) ... [2022-11-02 21:07:03,452 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:03" (1/1) ... [2022-11-02 21:07:03,462 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:07:03,463 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:07:03,506 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:07:03,506 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:07:03,507 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:03" (1/1) ... [2022-11-02 21:07:03,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:07:03,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:07:03,541 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:07:03,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:07:03,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:07:03,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:07:04,003 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:07:04,005 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:07:05,401 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:07:05,415 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:07:05,416 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 21:07:05,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:07:05 BoogieIcfgContainer [2022-11-02 21:07:05,419 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:07:05,422 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:07:05,422 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:07:05,427 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:07:05,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:07:02" (1/3) ... [2022-11-02 21:07:05,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f3ed414 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:07:05, skipping insertion in model container [2022-11-02 21:07:05,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:03" (2/3) ... [2022-11-02 21:07:05,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f3ed414 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:07:05, skipping insertion in model container [2022-11-02 21:07:05,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:07:05" (3/3) ... [2022-11-02 21:07:05,431 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.miim.c [2022-11-02 21:07:05,450 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:07:05,450 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 21:07:05,528 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:07:05,544 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;@4401a2cb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:07:05,545 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 21:07:05,553 INFO L276 IsEmpty]: Start isEmpty. Operand has 191 states, 189 states have (on average 1.4973544973544974) internal successors, (283), 190 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:05,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 21:07:05,559 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:05,560 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 21:07:05,561 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:05,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:05,568 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-02 21:07:05,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:05,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229418750] [2022-11-02 21:07:05,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:05,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:06,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:07:06,137 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 21:07:06,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:07:06,408 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 21:07:06,410 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 21:07:06,411 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-02 21:07:06,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 21:07:06,418 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-02 21:07:06,422 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 21:07:06,452 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-02 21:07:06,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 09:07:06 BoogieIcfgContainer [2022-11-02 21:07:06,465 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 21:07:06,466 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 21:07:06,466 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 21:07:06,466 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 21:07:06,467 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:07:05" (3/4) ... [2022-11-02 21:07:06,470 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-02 21:07:06,470 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 21:07:06,472 INFO L158 Benchmark]: Toolchain (without parser) took 3897.61ms. Allocated memory was 109.1MB in the beginning and 163.6MB in the end (delta: 54.5MB). Free memory was 71.7MB in the beginning and 83.5MB in the end (delta: -11.8MB). Peak memory consumption was 42.0MB. Max. memory is 16.1GB. [2022-11-02 21:07:06,472 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 109.1MB. Free memory was 89.5MB in the beginning and 89.5MB in the end (delta: 42.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:07:06,476 INFO L158 Benchmark]: CACSL2BoogieTranslator took 679.45ms. Allocated memory is still 109.1MB. Free memory was 71.5MB in the beginning and 64.3MB in the end (delta: 7.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-02 21:07:06,477 INFO L158 Benchmark]: Boogie Procedure Inliner took 101.79ms. Allocated memory is still 109.1MB. Free memory was 64.3MB in the beginning and 51.9MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-02 21:07:06,478 INFO L158 Benchmark]: Boogie Preprocessor took 105.02ms. Allocated memory is still 109.1MB. Free memory was 51.9MB in the beginning and 44.9MB in the end (delta: 7.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-02 21:07:06,479 INFO L158 Benchmark]: RCFGBuilder took 1956.09ms. Allocated memory was 109.1MB in the beginning and 163.6MB in the end (delta: 54.5MB). Free memory was 44.9MB in the beginning and 98.8MB in the end (delta: -53.9MB). Peak memory consumption was 36.1MB. Max. memory is 16.1GB. [2022-11-02 21:07:06,479 INFO L158 Benchmark]: TraceAbstraction took 1043.16ms. Allocated memory is still 163.6MB. Free memory was 97.7MB in the beginning and 84.6MB in the end (delta: 13.2MB). Peak memory consumption was 13.2MB. Max. memory is 16.1GB. [2022-11-02 21:07:06,481 INFO L158 Benchmark]: Witness Printer took 4.73ms. Allocated memory is still 163.6MB. Free memory was 84.6MB in the beginning and 83.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 21:07:06,485 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 109.1MB. Free memory was 89.5MB in the beginning and 89.5MB in the end (delta: 42.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 679.45ms. Allocated memory is still 109.1MB. Free memory was 71.5MB in the beginning and 64.3MB in the end (delta: 7.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 101.79ms. Allocated memory is still 109.1MB. Free memory was 64.3MB in the beginning and 51.9MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 105.02ms. Allocated memory is still 109.1MB. Free memory was 51.9MB in the beginning and 44.9MB in the end (delta: 7.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 1956.09ms. Allocated memory was 109.1MB in the beginning and 163.6MB in the end (delta: 54.5MB). Free memory was 44.9MB in the beginning and 98.8MB in the end (delta: -53.9MB). Peak memory consumption was 36.1MB. Max. memory is 16.1GB. * TraceAbstraction took 1043.16ms. Allocated memory is still 163.6MB. Free memory was 97.7MB in the beginning and 84.6MB in the end (delta: 13.2MB). Peak memory consumption was 13.2MB. Max. memory is 16.1GB. * Witness Printer took 4.73ms. Allocated memory is still 163.6MB. Free memory was 84.6MB in the beginning and 83.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. 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 295, overapproximation of bitwiseOr at line 298, overapproximation of bitwiseAnd at line 222. 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 - 16); [L29] const SORT_3 msb_SORT_3 = (SORT_3)1 << (16 - 1); [L31] const SORT_5 mask_SORT_5 = (SORT_5)-1 >> (sizeof(SORT_5) * 8 - 8); [L32] const SORT_5 msb_SORT_5 = (SORT_5)1 << (8 - 1); [L34] const SORT_7 mask_SORT_7 = (SORT_7)-1 >> (sizeof(SORT_7) * 8 - 5); [L35] const SORT_7 msb_SORT_7 = (SORT_7)1 << (5 - 1); [L37] const SORT_20 mask_SORT_20 = (SORT_20)-1 >> (sizeof(SORT_20) * 8 - 32); [L38] const SORT_20 msb_SORT_20 = (SORT_20)1 << (32 - 1); [L40] const SORT_51 mask_SORT_51 = (SORT_51)-1 >> (sizeof(SORT_51) * 8 - 6); [L41] const SORT_51 msb_SORT_51 = (SORT_51)1 << (6 - 1); [L43] const SORT_66 mask_SORT_66 = (SORT_66)-1 >> (sizeof(SORT_66) * 8 - 25); [L44] const SORT_66 msb_SORT_66 = (SORT_66)1 << (25 - 1); [L46] const SORT_68 mask_SORT_68 = (SORT_68)-1 >> (sizeof(SORT_68) * 8 - 7); [L47] const SORT_68 msb_SORT_68 = (SORT_68)1 << (7 - 1); [L49] const SORT_88 mask_SORT_88 = (SORT_88)-1 >> (sizeof(SORT_88) * 8 - 2); [L50] const SORT_88 msb_SORT_88 = (SORT_88)1 << (2 - 1); [L52] const SORT_126 mask_SORT_126 = (SORT_126)-1 >> (sizeof(SORT_126) * 8 - 3); [L53] const SORT_126 msb_SORT_126 = (SORT_126)1 << (3 - 1); [L55] const SORT_1 var_17 = 0; [L56] const SORT_20 var_22 = 1; [L57] const SORT_1 var_47 = 1; [L58] const SORT_51 var_52 = 0; [L59] const SORT_5 var_56 = 0; [L60] const SORT_5 var_61 = 2; [L61] const SORT_20 var_63 = 2; [L62] const SORT_66 var_67 = 0; [L63] const SORT_20 var_116 = 0; [L64] const SORT_51 var_254 = 33; [L65] const SORT_5 var_273 = 1; [L67] SORT_1 input_2; [L68] SORT_3 input_4; [L69] SORT_5 input_6; [L70] SORT_7 input_8; [L71] SORT_1 input_9; [L72] SORT_1 input_10; [L73] SORT_1 input_11; [L74] SORT_1 input_12; [L75] SORT_7 input_13; [L76] SORT_1 input_14; [L77] SORT_1 input_15; [L78] SORT_1 input_16; [L79] SORT_1 input_80; [L80] SORT_88 input_89; [L81] SORT_1 input_91; [L82] SORT_1 input_93; [L83] SORT_1 input_95; [L84] SORT_1 input_99; [L85] SORT_1 input_103; [L86] SORT_1 input_105; [L87] SORT_1 input_109; [L88] SORT_1 input_138; [L89] SORT_1 input_144; [L90] SORT_1 input_153; [L91] SORT_1 input_155; [L92] SORT_1 input_157; [L93] SORT_7 input_166; [L94] SORT_1 input_168; [L95] SORT_3 input_170; [L96] SORT_5 input_172; [L97] SORT_1 input_183; [L98] SORT_1 input_185; [L99] SORT_1 input_198; [L100] SORT_1 input_200; [L101] SORT_1 input_203; [L102] SORT_1 input_210; [L103] SORT_1 input_212; [L104] SORT_1 input_215; [L105] SORT_1 input_220; [L106] SORT_1 input_228; [L107] SORT_1 input_229; [L108] SORT_1 input_231; [L109] SORT_1 input_234; [L110] SORT_1 input_238; [L111] SORT_1 input_241; [L112] SORT_1 input_246; [L113] SORT_51 input_250; [L114] SORT_51 input_251; [L115] SORT_51 input_258; [L116] SORT_51 input_262; [L117] SORT_51 input_266; [L118] SORT_51 input_269; [L119] SORT_5 input_276; [L120] SORT_1 input_283; [L121] SORT_1 input_288; [L122] SORT_1 input_293; [L123] SORT_1 input_300; [L124] SORT_1 input_308; [L125] SORT_1 input_312; [L126] SORT_1 input_313; [L127] SORT_1 input_315; [L128] SORT_1 input_318; [L129] SORT_1 input_320; [L130] SORT_1 input_321; [L131] SORT_1 input_326; [L132] SORT_1 input_330; [L133] SORT_1 input_333; [L134] SORT_1 input_338; [L135] SORT_1 input_343; [L136] SORT_1 input_352; [L137] SORT_1 input_357; [L139] SORT_1 state_18 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L140] SORT_1 state_25 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L141] SORT_1 state_27 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L142] SORT_1 state_30 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L143] SORT_1 state_33 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L144] SORT_1 state_36 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L145] SORT_1 state_39 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L146] SORT_51 state_53 = __VERIFIER_nondet_uchar() & mask_SORT_51; [L147] SORT_5 state_57 = __VERIFIER_nondet_uchar() & mask_SORT_5; [L148] SORT_1 state_74 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L149] SORT_1 state_84 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L150] SORT_1 state_86 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L151] SORT_1 state_97 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L152] SORT_1 state_101 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L153] SORT_1 state_107 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L154] SORT_1 state_111 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L155] SORT_1 state_140 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L156] SORT_1 state_142 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L157] SORT_1 state_146 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L158] SORT_1 state_148 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L159] SORT_1 state_174 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L160] SORT_1 state_176 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L161] SORT_1 state_187 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L162] SORT_1 state_189 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L164] SORT_1 init_19_arg_1 = var_17; [L165] state_18 = init_19_arg_1 [L166] SORT_1 init_26_arg_1 = var_17; [L167] state_25 = init_26_arg_1 [L168] SORT_1 init_28_arg_1 = var_17; [L169] state_27 = init_28_arg_1 [L170] SORT_1 init_31_arg_1 = var_17; [L171] state_30 = init_31_arg_1 [L172] SORT_1 init_34_arg_1 = var_17; [L173] state_33 = init_34_arg_1 [L174] SORT_1 init_37_arg_1 = var_17; [L175] state_36 = init_37_arg_1 [L176] SORT_1 init_40_arg_1 = var_17; [L177] state_39 = init_40_arg_1 [L178] SORT_51 init_54_arg_1 = var_52; [L179] state_53 = init_54_arg_1 [L180] SORT_5 init_58_arg_1 = var_56; [L181] state_57 = init_58_arg_1 [L182] SORT_1 init_75_arg_1 = var_17; [L183] state_74 = init_75_arg_1 [L184] SORT_1 init_85_arg_1 = var_17; [L185] state_84 = init_85_arg_1 [L186] SORT_1 init_87_arg_1 = var_17; [L187] state_86 = init_87_arg_1 [L188] SORT_1 init_98_arg_1 = var_17; [L189] state_97 = init_98_arg_1 [L190] SORT_1 init_102_arg_1 = var_17; [L191] state_101 = init_102_arg_1 [L192] SORT_1 init_108_arg_1 = var_17; [L193] state_107 = init_108_arg_1 [L194] SORT_1 init_112_arg_1 = var_17; [L195] state_111 = init_112_arg_1 [L196] SORT_1 init_141_arg_1 = var_17; [L197] state_140 = init_141_arg_1 [L198] SORT_1 init_143_arg_1 = var_17; [L199] state_142 = init_143_arg_1 [L200] SORT_1 init_147_arg_1 = var_17; [L201] state_146 = init_147_arg_1 [L202] SORT_1 init_149_arg_1 = var_17; [L203] state_148 = init_149_arg_1 [L204] SORT_1 init_175_arg_1 = var_17; [L205] state_174 = init_175_arg_1 [L206] SORT_1 init_177_arg_1 = var_17; [L207] state_176 = init_177_arg_1 [L208] SORT_1 init_188_arg_1 = var_17; [L209] state_187 = init_188_arg_1 [L210] SORT_1 init_190_arg_1 = var_17; [L211] state_189 = init_190_arg_1 VAL [init_102_arg_1=0, init_108_arg_1=0, init_112_arg_1=0, init_141_arg_1=0, init_143_arg_1=0, init_147_arg_1=0, init_149_arg_1=0, init_175_arg_1=0, init_177_arg_1=0, init_188_arg_1=0, init_190_arg_1=0, init_19_arg_1=0, init_26_arg_1=0, init_28_arg_1=0, init_31_arg_1=0, init_34_arg_1=0, init_37_arg_1=0, init_40_arg_1=0, init_54_arg_1=0, init_58_arg_1=0, init_75_arg_1=0, init_85_arg_1=0, init_87_arg_1=0, init_98_arg_1=0, mask_SORT_1=1, mask_SORT_126=7, mask_SORT_20=4294967295, mask_SORT_3=65535, mask_SORT_5=255, mask_SORT_51=63, mask_SORT_66=4294967295, mask_SORT_68=127, mask_SORT_7=31, mask_SORT_88=3, msb_SORT_1=1, msb_SORT_126=4, msb_SORT_20=2147483648, msb_SORT_3=32768, msb_SORT_5=128, msb_SORT_51=32, msb_SORT_66=16777216, msb_SORT_68=64, msb_SORT_7=16, msb_SORT_88=2, state_101=0, state_107=0, state_111=0, state_140=0, state_142=0, state_146=0, state_148=0, state_174=0, state_176=0, state_18=0, state_187=0, state_189=0, state_25=0, state_27=0, state_30=0, state_33=0, state_36=0, state_39=0, state_53=0, state_57=0, state_74=0, state_84=0, state_86=0, state_97=0, var_116=0, var_17=0, var_22=1, var_254=33, var_273=1, var_47=1, var_52=0, var_56=0, var_61=2, var_63=2, var_67=0] [L214] input_2 = __VERIFIER_nondet_uchar() [L215] input_4 = __VERIFIER_nondet_ushort() [L216] input_6 = __VERIFIER_nondet_uchar() [L217] input_8 = __VERIFIER_nondet_uchar() [L218] input_9 = __VERIFIER_nondet_uchar() [L219] input_10 = __VERIFIER_nondet_uchar() [L220] input_11 = __VERIFIER_nondet_uchar() [L221] input_12 = __VERIFIER_nondet_uchar() [L222] input_12 = input_12 & mask_SORT_1 [L223] input_13 = __VERIFIER_nondet_uchar() [L224] input_14 = __VERIFIER_nondet_uchar() [L225] input_15 = __VERIFIER_nondet_uchar() [L226] input_16 = __VERIFIER_nondet_uchar() [L227] input_80 = __VERIFIER_nondet_uchar() [L228] input_89 = __VERIFIER_nondet_uchar() [L229] input_91 = __VERIFIER_nondet_uchar() [L230] input_93 = __VERIFIER_nondet_uchar() [L231] input_95 = __VERIFIER_nondet_uchar() [L232] input_99 = __VERIFIER_nondet_uchar() [L233] input_103 = __VERIFIER_nondet_uchar() [L234] input_105 = __VERIFIER_nondet_uchar() [L235] input_109 = __VERIFIER_nondet_uchar() [L236] input_138 = __VERIFIER_nondet_uchar() [L237] input_144 = __VERIFIER_nondet_uchar() [L238] input_153 = __VERIFIER_nondet_uchar() [L239] input_155 = __VERIFIER_nondet_uchar() [L240] input_157 = __VERIFIER_nondet_uchar() [L241] input_166 = __VERIFIER_nondet_uchar() [L242] input_168 = __VERIFIER_nondet_uchar() [L243] input_170 = __VERIFIER_nondet_ushort() [L244] input_172 = __VERIFIER_nondet_uchar() [L245] input_183 = __VERIFIER_nondet_uchar() [L246] input_185 = __VERIFIER_nondet_uchar() [L247] input_198 = __VERIFIER_nondet_uchar() [L248] input_200 = __VERIFIER_nondet_uchar() [L249] input_203 = __VERIFIER_nondet_uchar() [L250] input_210 = __VERIFIER_nondet_uchar() [L251] input_212 = __VERIFIER_nondet_uchar() [L252] input_215 = __VERIFIER_nondet_uchar() [L253] input_220 = __VERIFIER_nondet_uchar() [L254] input_228 = __VERIFIER_nondet_uchar() [L255] input_229 = __VERIFIER_nondet_uchar() [L256] input_231 = __VERIFIER_nondet_uchar() [L257] input_234 = __VERIFIER_nondet_uchar() [L258] input_238 = __VERIFIER_nondet_uchar() [L259] input_241 = __VERIFIER_nondet_uchar() [L260] input_246 = __VERIFIER_nondet_uchar() [L261] input_250 = __VERIFIER_nondet_uchar() [L262] input_251 = __VERIFIER_nondet_uchar() [L263] input_258 = __VERIFIER_nondet_uchar() [L264] input_262 = __VERIFIER_nondet_uchar() [L265] input_266 = __VERIFIER_nondet_uchar() [L266] input_269 = __VERIFIER_nondet_uchar() [L267] input_276 = __VERIFIER_nondet_uchar() [L268] input_283 = __VERIFIER_nondet_uchar() [L269] input_288 = __VERIFIER_nondet_uchar() [L270] input_293 = __VERIFIER_nondet_uchar() [L271] input_300 = __VERIFIER_nondet_uchar() [L272] input_308 = __VERIFIER_nondet_uchar() [L273] input_312 = __VERIFIER_nondet_uchar() [L274] input_313 = __VERIFIER_nondet_uchar() [L275] input_315 = __VERIFIER_nondet_uchar() [L276] input_318 = __VERIFIER_nondet_uchar() [L277] input_320 = __VERIFIER_nondet_uchar() [L278] input_321 = __VERIFIER_nondet_uchar() [L279] input_326 = __VERIFIER_nondet_uchar() [L280] input_330 = __VERIFIER_nondet_uchar() [L281] input_333 = __VERIFIER_nondet_uchar() [L282] input_338 = __VERIFIER_nondet_uchar() [L283] input_343 = __VERIFIER_nondet_uchar() [L284] input_352 = __VERIFIER_nondet_uchar() [L285] input_357 = __VERIFIER_nondet_uchar() [L288] SORT_1 var_21_arg_0 = state_18; [L289] var_21_arg_0 = var_21_arg_0 & mask_SORT_1 [L290] SORT_20 var_21 = var_21_arg_0; [L291] SORT_20 var_23_arg_0 = var_21; [L292] SORT_20 var_23_arg_1 = var_22; [L293] SORT_1 var_23 = var_23_arg_0 == var_23_arg_1; [L294] SORT_1 var_24_arg_0 = var_23; [L295] SORT_1 var_24 = ~var_24_arg_0; [L296] SORT_1 var_29_arg_0 = state_25; [L297] SORT_1 var_29_arg_1 = state_27; [L298] SORT_1 var_29 = var_29_arg_0 | var_29_arg_1; [L299] SORT_1 var_32_arg_0 = var_29; [L300] SORT_1 var_32_arg_1 = state_30; [L301] SORT_1 var_32 = var_32_arg_0 | var_32_arg_1; [L302] SORT_1 var_35_arg_0 = var_32; [L303] SORT_1 var_35_arg_1 = state_33; [L304] SORT_1 var_35 = var_35_arg_0 | var_35_arg_1; [L305] SORT_1 var_38_arg_0 = var_35; [L306] SORT_1 var_38_arg_1 = state_36; [L307] SORT_1 var_38 = var_38_arg_0 | var_38_arg_1; [L308] SORT_1 var_41_arg_0 = var_38; [L309] SORT_1 var_41_arg_1 = state_39; [L310] SORT_1 var_41 = var_41_arg_0 | var_41_arg_1; [L311] SORT_1 var_42_arg_0 = var_41; [L312] var_42_arg_0 = var_42_arg_0 & mask_SORT_1 [L313] SORT_20 var_42 = var_42_arg_0; [L314] SORT_20 var_43_arg_0 = var_42; [L315] SORT_20 var_43_arg_1 = var_22; [L316] SORT_1 var_43 = var_43_arg_0 == var_43_arg_1; [L317] SORT_1 var_44_arg_0 = var_24; [L318] SORT_1 var_44_arg_1 = var_43; [L319] SORT_1 var_44 = var_44_arg_0 | var_44_arg_1; [L320] SORT_1 var_48_arg_0 = var_44; [L321] SORT_1 var_48 = ~var_48_arg_0; [L322] SORT_1 var_49_arg_0 = var_47; [L323] SORT_1 var_49_arg_1 = var_48; [L324] SORT_1 var_49 = var_49_arg_0 & var_49_arg_1; [L325] var_49 = var_49 & mask_SORT_1 [L326] SORT_1 bad_50_arg_0 = var_49; [L327] CALL __VERIFIER_assert(!(bad_50_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, 191 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.9s, 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=191occurred 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, 0.4s 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 21:07:06,524 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/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_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.miim.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/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_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/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 ae120e442d3333a3829560b2dc4c79b941b2f5347f398389c9ef7ff85802ce4e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 21:07:08,866 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:07:08,869 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:07:08,917 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:07:08,917 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:07:08,923 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:07:08,925 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:07:08,933 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:07:08,939 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:07:08,942 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:07:08,943 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:07:08,944 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:07:08,945 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:07:08,952 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:07:08,954 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:07:08,955 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:07:08,957 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:07:08,959 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:07:08,961 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:07:08,963 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:07:08,972 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:07:08,977 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:07:08,978 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:07:08,979 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:07:08,982 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:07:08,983 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:07:08,983 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:07:08,984 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:07:08,984 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:07:08,985 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:07:08,986 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:07:08,986 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:07:08,987 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:07:08,988 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:07:08,989 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:07:08,989 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:07:08,990 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:07:08,990 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:07:08,991 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:07:08,991 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:07:08,996 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:07:08,998 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-02 21:07:09,043 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:07:09,043 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:07:09,044 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:07:09,045 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:07:09,046 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:07:09,046 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:07:09,047 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:07:09,047 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:07:09,048 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:07:09,048 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:07:09,049 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:07:09,049 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:07:09,049 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:07:09,050 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:07:09,050 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 21:07:09,050 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-02 21:07:09,050 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-02 21:07:09,050 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:07:09,050 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:07:09,051 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:07:09,051 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:07:09,051 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:07:09,051 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:07:09,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:07:09,052 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:07:09,052 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:07:09,052 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:07:09,052 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-02 21:07:09,052 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-02 21:07:09,053 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:07:09,053 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:07:09,053 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:07:09,053 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-02 21:07:09,054 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_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ae120e442d3333a3829560b2dc4c79b941b2f5347f398389c9ef7ff85802ce4e [2022-11-02 21:07:09,471 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:07:09,511 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:07:09,513 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:07:09,515 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:07:09,515 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:07:09,517 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.miim.c [2022-11-02 21:07:09,588 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/data/3ea91bced/2766980d42f54dba92217ffc797fd885/FLAGd1e1c1053 [2022-11-02 21:07:10,240 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:07:10,241 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.miim.c [2022-11-02 21:07:10,257 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/data/3ea91bced/2766980d42f54dba92217ffc797fd885/FLAGd1e1c1053 [2022-11-02 21:07:10,518 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/data/3ea91bced/2766980d42f54dba92217ffc797fd885 [2022-11-02 21:07:10,521 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:07:10,525 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:07:10,526 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:07:10,526 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:07:10,530 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:07:10,531 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:07:10" (1/1) ... [2022-11-02 21:07:10,533 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@687b4b1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:10, skipping insertion in model container [2022-11-02 21:07:10,533 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:07:10" (1/1) ... [2022-11-02 21:07:10,541 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:07:10,605 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:07:10,810 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_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.miim.c[1107,1120] [2022-11-02 21:07:11,119 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:07:11,123 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:07:11,134 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_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.miim.c[1107,1120] [2022-11-02 21:07:11,259 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:07:11,272 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:07:11,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:11 WrapperNode [2022-11-02 21:07:11,272 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:07:11,274 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:07:11,274 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:07:11,274 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:07:11,281 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:11" (1/1) ... [2022-11-02 21:07:11,303 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:11" (1/1) ... [2022-11-02 21:07:11,417 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1338 [2022-11-02 21:07:11,418 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:07:11,418 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:07:11,419 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:07:11,419 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:07:11,428 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:11" (1/1) ... [2022-11-02 21:07:11,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:11" (1/1) ... [2022-11-02 21:07:11,443 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:11" (1/1) ... [2022-11-02 21:07:11,447 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:11" (1/1) ... [2022-11-02 21:07:11,486 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:11" (1/1) ... [2022-11-02 21:07:11,509 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:11" (1/1) ... [2022-11-02 21:07:11,513 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:11" (1/1) ... [2022-11-02 21:07:11,533 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:11" (1/1) ... [2022-11-02 21:07:11,546 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:07:11,547 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:07:11,547 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:07:11,547 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:07:11,548 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:11" (1/1) ... [2022-11-02 21:07:11,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:07:11,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:07:11,580 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:07:11,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:07:11,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:07:11,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:07:12,019 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:07:12,021 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:07:13,103 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:07:13,115 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:07:13,115 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 21:07:13,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:07:13 BoogieIcfgContainer [2022-11-02 21:07:13,119 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:07:13,122 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:07:13,123 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:07:13,125 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:07:13,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:07:10" (1/3) ... [2022-11-02 21:07:13,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20562328 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:07:13, skipping insertion in model container [2022-11-02 21:07:13,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:11" (2/3) ... [2022-11-02 21:07:13,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20562328 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:07:13, skipping insertion in model container [2022-11-02 21:07:13,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:07:13" (3/3) ... [2022-11-02 21:07:13,128 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.miim.c [2022-11-02 21:07:13,147 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:07:13,147 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 21:07:13,224 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:07:13,230 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;@738b60d6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:07:13,230 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 21:07:13,236 INFO L276 IsEmpty]: Start isEmpty. Operand has 191 states, 189 states have (on average 1.4973544973544974) internal successors, (283), 190 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:13,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 21:07:13,242 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:13,243 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 21:07:13,243 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:13,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:13,248 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-02 21:07:13,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:07:13,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2079842599] [2022-11-02 21:07:13,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:13,271 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:07:13,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:07:13,275 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:07:13,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-02 21:07:13,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:13,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-02 21:07:13,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:13,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:07:13,863 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:07:13,864 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:07:13,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2079842599] [2022-11-02 21:07:13,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2079842599] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:13,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:13,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:07:13,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189020849] [2022-11-02 21:07:13,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:13,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:07:13,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:07:13,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:07:13,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:07:13,907 INFO L87 Difference]: Start difference. First operand has 191 states, 189 states have (on average 1.4973544973544974) internal successors, (283), 190 states have internal predecessors, (283), 0 states have call successors, (0), 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 21:07:14,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:14,078 INFO L93 Difference]: Finished difference Result 560 states and 840 transitions. [2022-11-02 21:07:14,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:07:14,081 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 21:07:14,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:14,098 INFO L225 Difference]: With dead ends: 560 [2022-11-02 21:07:14,099 INFO L226 Difference]: Without dead ends: 371 [2022-11-02 21:07:14,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:07:14,113 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 544 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:14,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [544 Valid, 808 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:07:14,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2022-11-02 21:07:14,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 189. [2022-11-02 21:07:14,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 1.4840425531914894) internal successors, (279), 188 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:14,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 279 transitions. [2022-11-02 21:07:14,181 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 279 transitions. Word has length 5 [2022-11-02 21:07:14,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:14,182 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 279 transitions. [2022-11-02 21:07:14,182 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 21:07:14,182 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 279 transitions. [2022-11-02 21:07:14,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:07:14,197 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:14,197 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:14,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:14,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:07:14,410 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:14,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:14,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1146734477, now seen corresponding path program 1 times [2022-11-02 21:07:14,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:07:14,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [702250912] [2022-11-02 21:07:14,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:14,415 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:07:14,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:07:14,416 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:07:14,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-02 21:07:14,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:15,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:07:15,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:15,070 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 21:07:15,070 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:07:15,070 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:07:15,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [702250912] [2022-11-02 21:07:15,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [702250912] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:15,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:15,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:07:15,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36681655] [2022-11-02 21:07:15,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:15,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:07:15,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:07:15,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:07:15,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:07:15,074 INFO L87 Difference]: Start difference. First operand 189 states and 279 transitions. Second operand has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:15,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:15,157 INFO L93 Difference]: Finished difference Result 739 states and 1098 transitions. [2022-11-02 21:07:15,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:07:15,157 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:07:15,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:15,160 INFO L225 Difference]: With dead ends: 739 [2022-11-02 21:07:15,160 INFO L226 Difference]: Without dead ends: 554 [2022-11-02 21:07:15,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:07:15,163 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 800 mSDsluCounter, 800 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 800 SdHoareTripleChecker+Valid, 1080 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:15,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [800 Valid, 1080 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:07:15,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2022-11-02 21:07:15,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 195. [2022-11-02 21:07:15,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 194 states have (on average 1.4793814432989691) internal successors, (287), 194 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:15,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 287 transitions. [2022-11-02 21:07:15,175 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 287 transitions. Word has length 188 [2022-11-02 21:07:15,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:15,176 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 287 transitions. [2022-11-02 21:07:15,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:15,176 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 287 transitions. [2022-11-02 21:07:15,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:07:15,179 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:15,179 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:15,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:15,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:07:15,407 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:15,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:15,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1962781707, now seen corresponding path program 1 times [2022-11-02 21:07:15,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:07:15,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1114750117] [2022-11-02 21:07:15,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:15,411 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:07:15,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:07:15,412 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:07:15,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-02 21:07:15,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:16,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:07:16,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:16,076 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 21:07:16,079 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:07:16,079 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:07:16,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1114750117] [2022-11-02 21:07:16,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1114750117] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:16,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:16,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:07:16,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229033897] [2022-11-02 21:07:16,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:16,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:07:16,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:07:16,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:07:16,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:07:16,082 INFO L87 Difference]: Start difference. First operand 195 states and 287 transitions. Second operand has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:16,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:16,165 INFO L93 Difference]: Finished difference Result 739 states and 1097 transitions. [2022-11-02 21:07:16,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:07:16,166 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:07:16,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:16,168 INFO L225 Difference]: With dead ends: 739 [2022-11-02 21:07:16,169 INFO L226 Difference]: Without dead ends: 554 [2022-11-02 21:07:16,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:07:16,175 INFO L413 NwaCegarLoop]: 285 mSDtfsCounter, 789 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 789 SdHoareTripleChecker+Valid, 1079 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:16,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [789 Valid, 1079 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:07:16,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2022-11-02 21:07:16,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 199. [2022-11-02 21:07:16,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 198 states have (on average 1.4747474747474747) internal successors, (292), 198 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:16,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 292 transitions. [2022-11-02 21:07:16,197 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 292 transitions. Word has length 188 [2022-11-02 21:07:16,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:16,199 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 292 transitions. [2022-11-02 21:07:16,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:16,200 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 292 transitions. [2022-11-02 21:07:16,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:07:16,207 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:16,207 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:16,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:16,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:07:16,425 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:16,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:16,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1943240585, now seen corresponding path program 1 times [2022-11-02 21:07:16,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:07:16,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1610262213] [2022-11-02 21:07:16,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:16,428 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:07:16,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:07:16,429 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:07:16,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-02 21:07:16,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:16,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 21:07:16,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:17,084 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 21:07:17,085 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:07:17,085 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:07:17,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1610262213] [2022-11-02 21:07:17,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1610262213] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:17,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:17,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:07:17,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997968860] [2022-11-02 21:07:17,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:17,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:07:17,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:07:17,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:07:17,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:07:17,088 INFO L87 Difference]: Start difference. First operand 199 states and 292 transitions. Second operand has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:17,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:17,203 INFO L93 Difference]: Finished difference Result 739 states and 1096 transitions. [2022-11-02 21:07:17,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:07:17,204 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:07:17,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:17,206 INFO L225 Difference]: With dead ends: 739 [2022-11-02 21:07:17,206 INFO L226 Difference]: Without dead ends: 554 [2022-11-02 21:07:17,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:07:17,208 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 773 mSDsluCounter, 779 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 773 SdHoareTripleChecker+Valid, 1069 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:17,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [773 Valid, 1069 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:07:17,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2022-11-02 21:07:17,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 205. [2022-11-02 21:07:17,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 204 states have (on average 1.4705882352941178) internal successors, (300), 204 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:17,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 300 transitions. [2022-11-02 21:07:17,216 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 300 transitions. Word has length 188 [2022-11-02 21:07:17,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:17,216 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 300 transitions. [2022-11-02 21:07:17,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:17,216 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 300 transitions. [2022-11-02 21:07:17,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:07:17,219 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:17,219 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:17,236 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:17,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:07:17,436 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:17,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:17,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1853180295, now seen corresponding path program 1 times [2022-11-02 21:07:17,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:07:17,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [547038197] [2022-11-02 21:07:17,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:17,438 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:07:17,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:07:17,439 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:07:17,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-02 21:07:17,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:17,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:07:17,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:18,043 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 21:07:18,044 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:07:18,044 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:07:18,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [547038197] [2022-11-02 21:07:18,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [547038197] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:18,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:18,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:07:18,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129949257] [2022-11-02 21:07:18,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:18,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:07:18,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:07:18,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:07:18,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:07:18,047 INFO L87 Difference]: Start difference. First operand 205 states and 300 transitions. Second operand has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:18,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:18,125 INFO L93 Difference]: Finished difference Result 739 states and 1095 transitions. [2022-11-02 21:07:18,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:07:18,125 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:07:18,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:18,127 INFO L225 Difference]: With dead ends: 739 [2022-11-02 21:07:18,128 INFO L226 Difference]: Without dead ends: 554 [2022-11-02 21:07:18,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:07:18,129 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 757 mSDsluCounter, 776 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 757 SdHoareTripleChecker+Valid, 1077 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:18,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [757 Valid, 1077 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:07:18,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2022-11-02 21:07:18,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 211. [2022-11-02 21:07:18,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 210 states have (on average 1.4666666666666666) internal successors, (308), 210 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 21:07:18,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 308 transitions. [2022-11-02 21:07:18,138 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 308 transitions. Word has length 188 [2022-11-02 21:07:18,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:18,138 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 308 transitions. [2022-11-02 21:07:18,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:18,139 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 308 transitions. [2022-11-02 21:07:18,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:07:18,141 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:18,141 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:18,165 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:18,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:07:18,358 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:18,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:18,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1354623493, now seen corresponding path program 1 times [2022-11-02 21:07:18,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:07:18,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1705282584] [2022-11-02 21:07:18,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:18,359 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:07:18,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:07:18,360 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:07:18,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-02 21:07:18,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:18,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-02 21:07:18,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:19,274 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 21:07:19,274 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:07:19,275 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:07:19,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1705282584] [2022-11-02 21:07:19,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1705282584] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:19,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:19,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:07:19,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423024572] [2022-11-02 21:07:19,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:19,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:07:19,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:07:19,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:07:19,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:07:19,277 INFO L87 Difference]: Start difference. First operand 211 states and 308 transitions. Second operand has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:19,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:19,469 INFO L93 Difference]: Finished difference Result 778 states and 1150 transitions. [2022-11-02 21:07:19,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:07:19,469 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:07:19,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:19,472 INFO L225 Difference]: With dead ends: 778 [2022-11-02 21:07:19,472 INFO L226 Difference]: Without dead ends: 593 [2022-11-02 21:07:19,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:07:19,477 INFO L413 NwaCegarLoop]: 314 mSDtfsCounter, 1046 mSDsluCounter, 1272 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1046 SdHoareTripleChecker+Valid, 1586 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:19,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1046 Valid, 1586 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:07:19,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2022-11-02 21:07:19,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 227. [2022-11-02 21:07:19,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 226 states have (on average 1.4646017699115044) internal successors, (331), 226 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:19,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 331 transitions. [2022-11-02 21:07:19,489 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 331 transitions. Word has length 188 [2022-11-02 21:07:19,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:19,489 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 331 transitions. [2022-11-02 21:07:19,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:19,490 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 331 transitions. [2022-11-02 21:07:19,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:07:19,493 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:19,493 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:19,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:19,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:07:19,710 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:19,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:19,711 INFO L85 PathProgramCache]: Analyzing trace with hash 576502141, now seen corresponding path program 1 times [2022-11-02 21:07:19,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:07:19,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2017541390] [2022-11-02 21:07:19,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:19,712 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:07:19,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:07:19,714 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:07:19,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-02 21:07:20,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:20,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-02 21:07:20,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:20,617 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 21:07:20,618 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:07:20,618 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:07:20,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2017541390] [2022-11-02 21:07:20,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2017541390] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:20,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:20,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:07:20,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381520742] [2022-11-02 21:07:20,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:20,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:07:20,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:07:20,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:07:20,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:07:20,622 INFO L87 Difference]: Start difference. First operand 227 states and 331 transitions. Second operand has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:20,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:20,794 INFO L93 Difference]: Finished difference Result 778 states and 1149 transitions. [2022-11-02 21:07:20,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:07:20,795 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:07:20,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:20,797 INFO L225 Difference]: With dead ends: 778 [2022-11-02 21:07:20,797 INFO L226 Difference]: Without dead ends: 593 [2022-11-02 21:07:20,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:07:20,798 INFO L413 NwaCegarLoop]: 322 mSDtfsCounter, 1029 mSDsluCounter, 1254 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1029 SdHoareTripleChecker+Valid, 1576 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:20,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1029 Valid, 1576 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:07:20,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2022-11-02 21:07:20,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 233. [2022-11-02 21:07:20,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 232 states have (on average 1.4612068965517242) internal successors, (339), 232 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:20,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 339 transitions. [2022-11-02 21:07:20,808 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 339 transitions. Word has length 188 [2022-11-02 21:07:20,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:20,811 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 339 transitions. [2022-11-02 21:07:20,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:20,811 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 339 transitions. [2022-11-02 21:07:20,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:07:20,814 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:20,820 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:20,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:21,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:07:21,037 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:21,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:21,037 INFO L85 PathProgramCache]: Analyzing trace with hash 420521599, now seen corresponding path program 1 times [2022-11-02 21:07:21,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:07:21,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [49945281] [2022-11-02 21:07:21,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:21,039 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:07:21,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:07:21,040 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:07:21,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-02 21:07:21,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:21,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 21:07:21,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:21,825 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 21:07:21,825 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:07:21,825 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:07:21,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [49945281] [2022-11-02 21:07:21,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [49945281] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:21,826 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:21,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:07:21,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813688392] [2022-11-02 21:07:21,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:21,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:07:21,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:07:21,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:07:21,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:07:21,829 INFO L87 Difference]: Start difference. First operand 233 states and 339 transitions. Second operand has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:22,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:22,046 INFO L93 Difference]: Finished difference Result 608 states and 896 transitions. [2022-11-02 21:07:22,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:07:22,046 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:07:22,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:22,048 INFO L225 Difference]: With dead ends: 608 [2022-11-02 21:07:22,048 INFO L226 Difference]: Without dead ends: 423 [2022-11-02 21:07:22,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:07:22,049 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 760 mSDsluCounter, 785 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 1102 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:22,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [760 Valid, 1102 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:07:22,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2022-11-02 21:07:22,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 239. [2022-11-02 21:07:22,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 238 states have (on average 1.4579831932773109) internal successors, (347), 238 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:22,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 347 transitions. [2022-11-02 21:07:22,058 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 347 transitions. Word has length 188 [2022-11-02 21:07:22,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:22,058 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 347 transitions. [2022-11-02 21:07:22,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:22,058 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 347 transitions. [2022-11-02 21:07:22,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:07:22,061 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:22,061 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:22,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:22,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:07:22,278 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:22,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:22,279 INFO L85 PathProgramCache]: Analyzing trace with hash -978432003, now seen corresponding path program 1 times [2022-11-02 21:07:22,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:07:22,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2076334540] [2022-11-02 21:07:22,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:22,280 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:07:22,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:07:22,281 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:07:22,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-02 21:07:22,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:22,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:07:22,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:23,278 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 21:07:23,278 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:07:23,278 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:07:23,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2076334540] [2022-11-02 21:07:23,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2076334540] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:23,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:23,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:07:23,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940255248] [2022-11-02 21:07:23,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:23,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:07:23,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:07:23,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:07:23,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:07:23,281 INFO L87 Difference]: Start difference. First operand 239 states and 347 transitions. Second operand has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:23,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:23,369 INFO L93 Difference]: Finished difference Result 490 states and 714 transitions. [2022-11-02 21:07:23,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:07:23,370 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:07:23,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:23,372 INFO L225 Difference]: With dead ends: 490 [2022-11-02 21:07:23,372 INFO L226 Difference]: Without dead ends: 305 [2022-11-02 21:07:23,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:07:23,373 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 101 mSDsluCounter, 800 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 1056 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 65 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:23,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 1056 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 65 Unchecked, 0.1s Time] [2022-11-02 21:07:23,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2022-11-02 21:07:23,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 305. [2022-11-02 21:07:23,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 304 states have (on average 1.4407894736842106) internal successors, (438), 304 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:23,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 438 transitions. [2022-11-02 21:07:23,383 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 438 transitions. Word has length 188 [2022-11-02 21:07:23,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:23,384 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 438 transitions. [2022-11-02 21:07:23,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:23,385 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 438 transitions. [2022-11-02 21:07:23,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:07:23,387 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:23,387 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:23,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:23,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:07:23,604 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:23,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:23,605 INFO L85 PathProgramCache]: Analyzing trace with hash 743570683, now seen corresponding path program 1 times [2022-11-02 21:07:23,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:07:23,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1424623607] [2022-11-02 21:07:23,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:23,606 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:07:23,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:07:23,610 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:07:23,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-02 21:07:24,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:24,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 21:07:24,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:24,459 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 21:07:24,459 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:07:24,459 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:07:24,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1424623607] [2022-11-02 21:07:24,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1424623607] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:24,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:24,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:07:24,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920889940] [2022-11-02 21:07:24,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:24,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:07:24,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:07:24,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:07:24,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:07:24,464 INFO L87 Difference]: Start difference. First operand 305 states and 438 transitions. Second operand has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:24,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:24,561 INFO L93 Difference]: Finished difference Result 805 states and 1182 transitions. [2022-11-02 21:07:24,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:07:24,565 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:07:24,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:24,568 INFO L225 Difference]: With dead ends: 805 [2022-11-02 21:07:24,568 INFO L226 Difference]: Without dead ends: 620 [2022-11-02 21:07:24,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:07:24,569 INFO L413 NwaCegarLoop]: 396 mSDtfsCounter, 583 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 1064 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:24,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [583 Valid, 1064 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:07:24,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2022-11-02 21:07:24,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 345. [2022-11-02 21:07:24,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 344 states have (on average 1.444767441860465) internal successors, (497), 344 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:24,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 497 transitions. [2022-11-02 21:07:24,581 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 497 transitions. Word has length 188 [2022-11-02 21:07:24,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:24,582 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 497 transitions. [2022-11-02 21:07:24,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:24,582 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 497 transitions. [2022-11-02 21:07:24,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:07:24,584 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:24,584 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:24,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:24,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:07:24,805 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:24,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:24,805 INFO L85 PathProgramCache]: Analyzing trace with hash 2094955901, now seen corresponding path program 1 times [2022-11-02 21:07:24,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:07:24,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [778053566] [2022-11-02 21:07:24,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:24,806 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:07:24,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:07:24,807 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:07:24,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-02 21:07:25,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:25,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:07:25,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:25,823 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 21:07:25,824 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:07:25,824 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:07:25,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [778053566] [2022-11-02 21:07:25,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [778053566] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:25,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:25,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:07:25,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274320849] [2022-11-02 21:07:25,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:25,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:07:25,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:07:25,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:07:25,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:07:25,827 INFO L87 Difference]: Start difference. First operand 345 states and 497 transitions. Second operand has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:25,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:25,888 INFO L93 Difference]: Finished difference Result 562 states and 819 transitions. [2022-11-02 21:07:25,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:07:25,890 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:07:25,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:25,891 INFO L225 Difference]: With dead ends: 562 [2022-11-02 21:07:25,892 INFO L226 Difference]: Without dead ends: 377 [2022-11-02 21:07:25,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:07:25,893 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 113 mSDsluCounter, 1040 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 1287 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 91 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:25,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 1287 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 91 Unchecked, 0.0s Time] [2022-11-02 21:07:25,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2022-11-02 21:07:25,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2022-11-02 21:07:25,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 1.4441489361702127) internal successors, (543), 376 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:25,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 543 transitions. [2022-11-02 21:07:25,901 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 543 transitions. Word has length 188 [2022-11-02 21:07:25,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:25,902 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 543 transitions. [2022-11-02 21:07:25,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:25,902 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 543 transitions. [2022-11-02 21:07:25,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:07:25,904 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:25,905 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:25,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:26,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:07:26,122 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:26,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:26,122 INFO L85 PathProgramCache]: Analyzing trace with hash 218473083, now seen corresponding path program 1 times [2022-11-02 21:07:26,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:07:26,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [681962931] [2022-11-02 21:07:26,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:26,124 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:07:26,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:07:26,125 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:07:26,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-02 21:07:26,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:26,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:07:26,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:27,202 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 21:07:27,203 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:07:27,203 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:07:27,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [681962931] [2022-11-02 21:07:27,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [681962931] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:27,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:27,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:07:27,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804625601] [2022-11-02 21:07:27,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:27,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:07:27,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:07:27,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:07:27,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:07:27,206 INFO L87 Difference]: Start difference. First operand 377 states and 543 transitions. Second operand has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:27,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:27,250 INFO L93 Difference]: Finished difference Result 576 states and 839 transitions. [2022-11-02 21:07:27,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:07:27,252 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:07:27,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:27,253 INFO L225 Difference]: With dead ends: 576 [2022-11-02 21:07:27,254 INFO L226 Difference]: Without dead ends: 391 [2022-11-02 21:07:27,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:07:27,255 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 173 mSDsluCounter, 824 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 1066 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 66 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:27,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 1066 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 66 Unchecked, 0.0s Time] [2022-11-02 21:07:27,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2022-11-02 21:07:27,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 391. [2022-11-02 21:07:27,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 1.4435897435897436) internal successors, (563), 390 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:27,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 563 transitions. [2022-11-02 21:07:27,264 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 563 transitions. Word has length 188 [2022-11-02 21:07:27,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:27,265 INFO L495 AbstractCegarLoop]: Abstraction has 391 states and 563 transitions. [2022-11-02 21:07:27,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:27,265 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 563 transitions. [2022-11-02 21:07:27,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:07:27,267 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:27,268 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:27,300 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:27,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:07:27,484 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:27,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:27,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1185823737, now seen corresponding path program 1 times [2022-11-02 21:07:27,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:07:27,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [786797760] [2022-11-02 21:07:27,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:27,486 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:07:27,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:07:27,487 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:07:27,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-02 21:07:27,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:27,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-02 21:07:27,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:28,426 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 21:07:28,426 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:07:28,427 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:07:28,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [786797760] [2022-11-02 21:07:28,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [786797760] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:28,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:28,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:07:28,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976628792] [2022-11-02 21:07:28,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:28,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:07:28,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:07:28,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:07:28,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:07:28,429 INFO L87 Difference]: Start difference. First operand 391 states and 563 transitions. Second operand has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:28,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:28,606 INFO L93 Difference]: Finished difference Result 890 states and 1303 transitions. [2022-11-02 21:07:28,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:07:28,609 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:07:28,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:28,611 INFO L225 Difference]: With dead ends: 890 [2022-11-02 21:07:28,612 INFO L226 Difference]: Without dead ends: 705 [2022-11-02 21:07:28,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:07:28,613 INFO L413 NwaCegarLoop]: 439 mSDtfsCounter, 823 mSDsluCounter, 1014 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 823 SdHoareTripleChecker+Valid, 1453 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:28,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [823 Valid, 1453 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:07:28,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2022-11-02 21:07:28,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 425. [2022-11-02 21:07:28,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 424 states have (on average 1.445754716981132) internal successors, (613), 424 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:28,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 613 transitions. [2022-11-02 21:07:28,624 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 613 transitions. Word has length 188 [2022-11-02 21:07:28,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:28,624 INFO L495 AbstractCegarLoop]: Abstraction has 425 states and 613 transitions. [2022-11-02 21:07:28,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:28,625 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 613 transitions. [2022-11-02 21:07:28,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:07:28,627 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:28,627 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:28,645 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:28,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:07:28,844 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:28,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:28,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1147568901, now seen corresponding path program 1 times [2022-11-02 21:07:28,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:07:28,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [622343911] [2022-11-02 21:07:28,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:28,845 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:07:28,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:07:28,846 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:07:28,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-02 21:07:29,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:29,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 21:07:29,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:29,585 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 21:07:29,585 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:07:29,585 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:07:29,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [622343911] [2022-11-02 21:07:29,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [622343911] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:29,586 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:29,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:07:29,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286431221] [2022-11-02 21:07:29,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:29,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:07:29,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:07:29,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:07:29,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:07:29,588 INFO L87 Difference]: Start difference. First operand 425 states and 613 transitions. Second operand has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:29,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:29,715 INFO L93 Difference]: Finished difference Result 890 states and 1302 transitions. [2022-11-02 21:07:29,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:07:29,716 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:07:29,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:29,719 INFO L225 Difference]: With dead ends: 890 [2022-11-02 21:07:29,719 INFO L226 Difference]: Without dead ends: 705 [2022-11-02 21:07:29,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:07:29,721 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 806 mSDsluCounter, 1018 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 806 SdHoareTripleChecker+Valid, 1474 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:29,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [806 Valid, 1474 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:07:29,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2022-11-02 21:07:29,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 431. [2022-11-02 21:07:29,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 430 states have (on average 1.4441860465116279) internal successors, (621), 430 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:29,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 621 transitions. [2022-11-02 21:07:29,734 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 621 transitions. Word has length 188 [2022-11-02 21:07:29,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:29,734 INFO L495 AbstractCegarLoop]: Abstraction has 431 states and 621 transitions. [2022-11-02 21:07:29,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:29,735 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 621 transitions. [2022-11-02 21:07:29,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:07:29,736 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:29,736 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:29,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:29,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:07:29,953 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:29,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:29,953 INFO L85 PathProgramCache]: Analyzing trace with hash 239216509, now seen corresponding path program 1 times [2022-11-02 21:07:29,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:07:29,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1468827051] [2022-11-02 21:07:29,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:29,954 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:07:29,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:07:29,955 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:07:29,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-02 21:07:30,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:30,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-02 21:07:30,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:30,912 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 21:07:30,913 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:07:30,913 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:07:30,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1468827051] [2022-11-02 21:07:30,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1468827051] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:30,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:30,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:07:30,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113202518] [2022-11-02 21:07:30,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:30,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:07:30,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:07:30,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:07:30,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:07:30,918 INFO L87 Difference]: Start difference. First operand 431 states and 621 transitions. Second operand has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:31,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:31,084 INFO L93 Difference]: Finished difference Result 890 states and 1301 transitions. [2022-11-02 21:07:31,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:07:31,085 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:07:31,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:31,088 INFO L225 Difference]: With dead ends: 890 [2022-11-02 21:07:31,088 INFO L226 Difference]: Without dead ends: 705 [2022-11-02 21:07:31,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:07:31,090 INFO L413 NwaCegarLoop]: 458 mSDtfsCounter, 784 mSDsluCounter, 972 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 784 SdHoareTripleChecker+Valid, 1430 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:31,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [784 Valid, 1430 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:07:31,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2022-11-02 21:07:31,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 439. [2022-11-02 21:07:31,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 438 states have (on average 1.4429223744292237) internal successors, (632), 438 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:31,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 632 transitions. [2022-11-02 21:07:31,101 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 632 transitions. Word has length 188 [2022-11-02 21:07:31,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:31,102 INFO L495 AbstractCegarLoop]: Abstraction has 439 states and 632 transitions. [2022-11-02 21:07:31,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:31,102 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 632 transitions. [2022-11-02 21:07:31,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:07:31,104 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:31,104 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:31,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:31,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:07:31,323 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:31,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:31,323 INFO L85 PathProgramCache]: Analyzing trace with hash -113871873, now seen corresponding path program 1 times [2022-11-02 21:07:31,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:07:31,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1403942716] [2022-11-02 21:07:31,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:31,324 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:07:31,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:07:31,325 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:07:31,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-02 21:07:31,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:31,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:07:31,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:32,440 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 21:07:32,440 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:07:32,441 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:07:32,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1403942716] [2022-11-02 21:07:32,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1403942716] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:32,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:32,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:07:32,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87526798] [2022-11-02 21:07:32,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:32,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:07:32,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:07:32,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:07:32,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:07:32,445 INFO L87 Difference]: Start difference. First operand 439 states and 632 transitions. Second operand has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:32,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:32,515 INFO L93 Difference]: Finished difference Result 656 states and 952 transitions. [2022-11-02 21:07:32,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:07:32,517 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:07:32,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:32,519 INFO L225 Difference]: With dead ends: 656 [2022-11-02 21:07:32,519 INFO L226 Difference]: Without dead ends: 471 [2022-11-02 21:07:32,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:07:32,520 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 223 mSDsluCounter, 908 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 1144 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 82 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:32,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 1144 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 82 Unchecked, 0.0s Time] [2022-11-02 21:07:32,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2022-11-02 21:07:32,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 471. [2022-11-02 21:07:32,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 470 states have (on average 1.4382978723404256) internal successors, (676), 470 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:32,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 676 transitions. [2022-11-02 21:07:32,536 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 676 transitions. Word has length 188 [2022-11-02 21:07:32,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:32,538 INFO L495 AbstractCegarLoop]: Abstraction has 471 states and 676 transitions. [2022-11-02 21:07:32,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:32,539 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 676 transitions. [2022-11-02 21:07:32,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:07:32,540 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:32,540 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:32,558 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:32,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:07:32,748 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:32,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:32,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1731495293, now seen corresponding path program 1 times [2022-11-02 21:07:32,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:07:32,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [28638020] [2022-11-02 21:07:32,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:32,750 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:07:32,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:07:32,751 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:07:32,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-02 21:07:33,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:33,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:07:33,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:33,934 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 21:07:33,934 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:07:33,935 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:07:33,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [28638020] [2022-11-02 21:07:33,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [28638020] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:33,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:33,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:07:33,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45154075] [2022-11-02 21:07:33,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:33,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:07:33,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:07:33,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:07:33,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:07:33,937 INFO L87 Difference]: Start difference. First operand 471 states and 676 transitions. Second operand has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:33,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:33,994 INFO L93 Difference]: Finished difference Result 674 states and 978 transitions. [2022-11-02 21:07:33,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:07:33,996 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:07:33,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:34,000 INFO L225 Difference]: With dead ends: 674 [2022-11-02 21:07:34,000 INFO L226 Difference]: Without dead ends: 489 [2022-11-02 21:07:34,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:07:34,002 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 185 mSDsluCounter, 1076 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 1305 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 66 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:34,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 1305 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 66 Unchecked, 0.0s Time] [2022-11-02 21:07:34,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2022-11-02 21:07:34,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 489. [2022-11-02 21:07:34,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 488 states have (on average 1.4385245901639345) internal successors, (702), 488 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:34,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 702 transitions. [2022-11-02 21:07:34,018 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 702 transitions. Word has length 188 [2022-11-02 21:07:34,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:34,018 INFO L495 AbstractCegarLoop]: Abstraction has 489 states and 702 transitions. [2022-11-02 21:07:34,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:34,019 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 702 transitions. [2022-11-02 21:07:34,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:07:34,027 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:34,027 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:34,052 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:34,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:07:34,240 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:34,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:34,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1308793467, now seen corresponding path program 1 times [2022-11-02 21:07:34,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:07:34,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1608789776] [2022-11-02 21:07:34,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:34,242 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:07:34,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:07:34,243 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:07:34,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-02 21:07:34,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:34,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:07:34,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:35,496 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 21:07:35,496 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:07:35,496 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:07:35,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1608789776] [2022-11-02 21:07:35,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1608789776] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:35,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:35,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:07:35,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041510495] [2022-11-02 21:07:35,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:35,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:07:35,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:07:35,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:07:35,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:07:35,502 INFO L87 Difference]: Start difference. First operand 489 states and 702 transitions. Second operand has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:35,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:35,544 INFO L93 Difference]: Finished difference Result 688 states and 998 transitions. [2022-11-02 21:07:35,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:07:35,546 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:07:35,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:35,548 INFO L225 Difference]: With dead ends: 688 [2022-11-02 21:07:35,548 INFO L226 Difference]: Without dead ends: 503 [2022-11-02 21:07:35,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:07:35,549 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 271 mSDsluCounter, 861 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 1085 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 67 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:35,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 1085 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 67 Unchecked, 0.0s Time] [2022-11-02 21:07:35,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2022-11-02 21:07:35,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 503. [2022-11-02 21:07:35,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 503 states, 502 states have (on average 1.4382470119521913) internal successors, (722), 502 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:35,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 722 transitions. [2022-11-02 21:07:35,562 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 722 transitions. Word has length 188 [2022-11-02 21:07:35,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:35,562 INFO L495 AbstractCegarLoop]: Abstraction has 503 states and 722 transitions. [2022-11-02 21:07:35,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:35,563 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 722 transitions. [2022-11-02 21:07:35,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:07:35,564 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:35,564 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:35,585 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:35,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:07:35,785 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:35,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:35,785 INFO L85 PathProgramCache]: Analyzing trace with hash -466213895, now seen corresponding path program 1 times [2022-11-02 21:07:35,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:07:35,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [948619193] [2022-11-02 21:07:35,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:35,786 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:07:35,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:07:35,787 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:07:35,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-02 21:07:36,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:36,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-02 21:07:36,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:37,530 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:07:37,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:07:39,006 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:07:39,006 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:07:39,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [948619193] [2022-11-02 21:07:39,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [948619193] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:07:39,007 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:07:39,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-11-02 21:07:39,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740416524] [2022-11-02 21:07:39,007 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:07:39,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 21:07:39,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:07:39,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 21:07:39,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-11-02 21:07:39,009 INFO L87 Difference]: Start difference. First operand 503 states and 722 transitions. Second operand has 14 states, 14 states have (on average 26.714285714285715) internal successors, (374), 14 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:39,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:39,594 INFO L93 Difference]: Finished difference Result 1048 states and 1535 transitions. [2022-11-02 21:07:39,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:07:39,596 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 26.714285714285715) internal successors, (374), 14 states have internal predecessors, (374), 0 states have call successors, (0), 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 188 [2022-11-02 21:07:39,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:39,599 INFO L225 Difference]: With dead ends: 1048 [2022-11-02 21:07:39,599 INFO L226 Difference]: Without dead ends: 1046 [2022-11-02 21:07:39,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 362 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=149, Invalid=451, Unknown=0, NotChecked=0, Total=600 [2022-11-02 21:07:39,601 INFO L413 NwaCegarLoop]: 482 mSDtfsCounter, 4107 mSDsluCounter, 2627 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4107 SdHoareTripleChecker+Valid, 3109 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 388 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:39,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4107 Valid, 3109 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 211 Invalid, 0 Unknown, 388 Unchecked, 0.3s Time] [2022-11-02 21:07:39,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2022-11-02 21:07:39,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 684. [2022-11-02 21:07:39,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 683 states have (on average 1.452415812591508) internal successors, (992), 683 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:39,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 992 transitions. [2022-11-02 21:07:39,620 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 992 transitions. Word has length 188 [2022-11-02 21:07:39,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:39,621 INFO L495 AbstractCegarLoop]: Abstraction has 684 states and 992 transitions. [2022-11-02 21:07:39,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 26.714285714285715) internal successors, (374), 14 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:39,622 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 992 transitions. [2022-11-02 21:07:39,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:07:39,623 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:39,623 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:39,641 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:39,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:07:39,828 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:39,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:39,829 INFO L85 PathProgramCache]: Analyzing trace with hash 230789895, now seen corresponding path program 1 times [2022-11-02 21:07:39,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:07:39,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1864867318] [2022-11-02 21:07:39,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:39,830 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:07:39,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:07:39,832 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:07:39,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-02 21:07:40,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:40,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:07:40,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:40,308 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 21:07:40,309 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:07:40,309 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:07:40,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1864867318] [2022-11-02 21:07:40,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1864867318] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:40,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:40,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:07:40,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440672431] [2022-11-02 21:07:40,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:40,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:07:40,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:07:40,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:07:40,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:07:40,314 INFO L87 Difference]: Start difference. First operand 684 states and 992 transitions. Second operand has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:40,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:40,413 INFO L93 Difference]: Finished difference Result 1703 states and 2486 transitions. [2022-11-02 21:07:40,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:07:40,414 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:07:40,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:40,418 INFO L225 Difference]: With dead ends: 1703 [2022-11-02 21:07:40,418 INFO L226 Difference]: Without dead ends: 1207 [2022-11-02 21:07:40,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:07:40,421 INFO L413 NwaCegarLoop]: 533 mSDtfsCounter, 271 mSDsluCounter, 1655 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 2188 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 159 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:40,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 2188 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 159 Unchecked, 0.1s Time] [2022-11-02 21:07:40,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1207 states. [2022-11-02 21:07:40,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1207 to 684. [2022-11-02 21:07:40,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 683 states have (on average 1.4509516837481697) internal successors, (991), 683 states have internal predecessors, (991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:40,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 991 transitions. [2022-11-02 21:07:40,447 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 991 transitions. Word has length 188 [2022-11-02 21:07:40,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:40,448 INFO L495 AbstractCegarLoop]: Abstraction has 684 states and 991 transitions. [2022-11-02 21:07:40,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:40,448 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 991 transitions. [2022-11-02 21:07:40,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:07:40,450 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:40,451 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:40,472 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:40,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:07:40,667 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:40,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:40,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1829938953, now seen corresponding path program 1 times [2022-11-02 21:07:40,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:07:40,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1895256850] [2022-11-02 21:07:40,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:40,669 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:07:40,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:07:40,670 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:07:40,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-02 21:07:41,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:41,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:07:41,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:41,155 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 21:07:41,155 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:07:41,155 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:07:41,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1895256850] [2022-11-02 21:07:41,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1895256850] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:41,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:41,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:07:41,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436337543] [2022-11-02 21:07:41,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:41,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:07:41,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:07:41,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:07:41,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:07:41,158 INFO L87 Difference]: Start difference. First operand 684 states and 991 transitions. Second operand has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:41,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:41,481 INFO L93 Difference]: Finished difference Result 1731 states and 2528 transitions. [2022-11-02 21:07:41,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:07:41,483 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:07:41,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:41,487 INFO L225 Difference]: With dead ends: 1731 [2022-11-02 21:07:41,487 INFO L226 Difference]: Without dead ends: 1239 [2022-11-02 21:07:41,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:07:41,489 INFO L413 NwaCegarLoop]: 722 mSDtfsCounter, 520 mSDsluCounter, 2042 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 520 SdHoareTripleChecker+Valid, 2764 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 154 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:41,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [520 Valid, 2764 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 229 Invalid, 0 Unknown, 154 Unchecked, 0.3s Time] [2022-11-02 21:07:41,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2022-11-02 21:07:41,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 684. [2022-11-02 21:07:41,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 683 states have (on average 1.4494875549048316) internal successors, (990), 683 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:41,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 990 transitions. [2022-11-02 21:07:41,506 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 990 transitions. Word has length 188 [2022-11-02 21:07:41,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:41,506 INFO L495 AbstractCegarLoop]: Abstraction has 684 states and 990 transitions. [2022-11-02 21:07:41,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:41,507 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 990 transitions. [2022-11-02 21:07:41,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:07:41,508 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:41,508 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:41,529 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:41,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:07:41,724 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:41,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:41,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1937634293, now seen corresponding path program 1 times [2022-11-02 21:07:41,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:07:41,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1995940254] [2022-11-02 21:07:41,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:41,726 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:07:41,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:07:41,727 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:07:41,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-02 21:07:42,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:42,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:07:42,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:42,240 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 21:07:42,241 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:07:42,241 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:07:42,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1995940254] [2022-11-02 21:07:42,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1995940254] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:42,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:42,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:07:42,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797438727] [2022-11-02 21:07:42,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:42,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:07:42,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:07:42,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:07:42,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:07:42,243 INFO L87 Difference]: Start difference. First operand 684 states and 990 transitions. Second operand has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:42,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:42,550 INFO L93 Difference]: Finished difference Result 1723 states and 2515 transitions. [2022-11-02 21:07:42,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:07:42,552 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:07:42,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:42,556 INFO L225 Difference]: With dead ends: 1723 [2022-11-02 21:07:42,556 INFO L226 Difference]: Without dead ends: 1233 [2022-11-02 21:07:42,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:07:42,558 INFO L413 NwaCegarLoop]: 718 mSDtfsCounter, 516 mSDsluCounter, 2449 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 3167 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 251 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:42,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [516 Valid, 3167 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 229 Invalid, 0 Unknown, 251 Unchecked, 0.3s Time] [2022-11-02 21:07:42,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1233 states. [2022-11-02 21:07:42,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1233 to 684. [2022-11-02 21:07:42,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 683 states have (on average 1.4480234260614935) internal successors, (989), 683 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:42,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 989 transitions. [2022-11-02 21:07:42,574 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 989 transitions. Word has length 188 [2022-11-02 21:07:42,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:42,575 INFO L495 AbstractCegarLoop]: Abstraction has 684 states and 989 transitions. [2022-11-02 21:07:42,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:42,575 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 989 transitions. [2022-11-02 21:07:42,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:07:42,576 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:42,577 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:42,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:42,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:07:42,793 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:42,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:42,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1289041523, now seen corresponding path program 1 times [2022-11-02 21:07:42,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:07:42,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2138411397] [2022-11-02 21:07:42,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:42,794 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:07:42,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:07:42,795 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:07:42,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-02 21:07:43,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:43,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:07:43,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:43,272 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 21:07:43,272 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:07:43,272 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:07:43,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2138411397] [2022-11-02 21:07:43,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2138411397] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:43,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:43,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:07:43,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597160991] [2022-11-02 21:07:43,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:43,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:07:43,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:07:43,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:07:43,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:07:43,275 INFO L87 Difference]: Start difference. First operand 684 states and 989 transitions. Second operand has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:43,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:43,496 INFO L93 Difference]: Finished difference Result 1699 states and 2480 transitions. [2022-11-02 21:07:43,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:07:43,498 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:07:43,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:43,502 INFO L225 Difference]: With dead ends: 1699 [2022-11-02 21:07:43,502 INFO L226 Difference]: Without dead ends: 1215 [2022-11-02 21:07:43,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:07:43,503 INFO L413 NwaCegarLoop]: 708 mSDtfsCounter, 743 mSDsluCounter, 2002 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 743 SdHoareTripleChecker+Valid, 2710 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 249 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:43,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [743 Valid, 2710 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 131 Invalid, 0 Unknown, 249 Unchecked, 0.2s Time] [2022-11-02 21:07:43,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2022-11-02 21:07:43,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 684. [2022-11-02 21:07:43,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 683 states have (on average 1.4465592972181551) internal successors, (988), 683 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:43,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 988 transitions. [2022-11-02 21:07:43,521 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 988 transitions. Word has length 188 [2022-11-02 21:07:43,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:43,521 INFO L495 AbstractCegarLoop]: Abstraction has 684 states and 988 transitions. [2022-11-02 21:07:43,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:43,522 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 988 transitions. [2022-11-02 21:07:43,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:07:43,523 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:43,523 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:43,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:43,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:07:43,738 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:43,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:43,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1082675343, now seen corresponding path program 1 times [2022-11-02 21:07:43,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:07:43,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [681786903] [2022-11-02 21:07:43,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:43,739 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:07:43,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:07:43,740 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:07:43,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-02 21:07:44,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:44,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:07:44,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:44,289 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 21:07:44,289 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:07:44,289 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:07:44,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [681786903] [2022-11-02 21:07:44,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [681786903] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:44,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:44,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:07:44,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431906178] [2022-11-02 21:07:44,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:44,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:07:44,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:07:44,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:07:44,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:07:44,292 INFO L87 Difference]: Start difference. First operand 684 states and 988 transitions. Second operand has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:44,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:44,414 INFO L93 Difference]: Finished difference Result 1639 states and 2392 transitions. [2022-11-02 21:07:44,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:07:44,416 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:07:44,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:44,419 INFO L225 Difference]: With dead ends: 1639 [2022-11-02 21:07:44,419 INFO L226 Difference]: Without dead ends: 1159 [2022-11-02 21:07:44,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:07:44,421 INFO L413 NwaCegarLoop]: 522 mSDtfsCounter, 261 mSDsluCounter, 1222 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 1744 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 101 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:44,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 1744 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 101 Unchecked, 0.1s Time] [2022-11-02 21:07:44,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2022-11-02 21:07:44,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 684. [2022-11-02 21:07:44,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 683 states have (on average 1.445095168374817) internal successors, (987), 683 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:44,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 987 transitions. [2022-11-02 21:07:44,447 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 987 transitions. Word has length 188 [2022-11-02 21:07:44,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:44,447 INFO L495 AbstractCegarLoop]: Abstraction has 684 states and 987 transitions. [2022-11-02 21:07:44,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:44,448 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 987 transitions. [2022-11-02 21:07:44,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:07:44,449 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:44,449 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:44,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:44,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:07:44,667 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:44,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:44,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1808422767, now seen corresponding path program 1 times [2022-11-02 21:07:44,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:07:44,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [992242880] [2022-11-02 21:07:44,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:44,669 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:07:44,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:07:44,670 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:07:44,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-02 21:07:45,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:45,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:07:45,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:45,177 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 21:07:45,178 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:07:45,178 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:07:45,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [992242880] [2022-11-02 21:07:45,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [992242880] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:45,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:45,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:07:45,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694468938] [2022-11-02 21:07:45,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:45,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:07:45,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:07:45,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:07:45,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:07:45,181 INFO L87 Difference]: Start difference. First operand 684 states and 987 transitions. Second operand has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:45,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:45,397 INFO L93 Difference]: Finished difference Result 1675 states and 2444 transitions. [2022-11-02 21:07:45,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:07:45,399 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:07:45,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:45,403 INFO L225 Difference]: With dead ends: 1675 [2022-11-02 21:07:45,403 INFO L226 Difference]: Without dead ends: 1197 [2022-11-02 21:07:45,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:07:45,405 INFO L413 NwaCegarLoop]: 697 mSDtfsCounter, 724 mSDsluCounter, 1579 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 724 SdHoareTripleChecker+Valid, 2276 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 150 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:45,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [724 Valid, 2276 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 133 Invalid, 0 Unknown, 150 Unchecked, 0.2s Time] [2022-11-02 21:07:45,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1197 states. [2022-11-02 21:07:45,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1197 to 684. [2022-11-02 21:07:45,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 683 states have (on average 1.4436310395314789) internal successors, (986), 683 states have internal predecessors, (986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:45,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 986 transitions. [2022-11-02 21:07:45,422 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 986 transitions. Word has length 188 [2022-11-02 21:07:45,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:45,422 INFO L495 AbstractCegarLoop]: Abstraction has 684 states and 986 transitions. [2022-11-02 21:07:45,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:45,422 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 986 transitions. [2022-11-02 21:07:45,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:07:45,424 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:45,424 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:45,441 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (26)] Ended with exit code 0 [2022-11-02 21:07:45,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:07:45,641 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:45,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:45,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1141040877, now seen corresponding path program 1 times [2022-11-02 21:07:45,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:07:45,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1474189761] [2022-11-02 21:07:45,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:45,643 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:07:45,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:07:45,644 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:07:45,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-02 21:07:46,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:46,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:07:46,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:46,157 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 21:07:46,157 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:07:46,157 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:07:46,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1474189761] [2022-11-02 21:07:46,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1474189761] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:46,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:46,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:07:46,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745050041] [2022-11-02 21:07:46,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:46,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:07:46,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:07:46,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:07:46,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:07:46,162 INFO L87 Difference]: Start difference. First operand 684 states and 986 transitions. Second operand has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:46,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:46,382 INFO L93 Difference]: Finished difference Result 1659 states and 2419 transitions. [2022-11-02 21:07:46,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:07:46,383 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:07:46,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:46,385 INFO L225 Difference]: With dead ends: 1659 [2022-11-02 21:07:46,386 INFO L226 Difference]: Without dead ends: 1185 [2022-11-02 21:07:46,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:07:46,387 INFO L413 NwaCegarLoop]: 690 mSDtfsCounter, 712 mSDsluCounter, 1571 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 712 SdHoareTripleChecker+Valid, 2261 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 149 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:46,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [712 Valid, 2261 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 133 Invalid, 0 Unknown, 149 Unchecked, 0.2s Time] [2022-11-02 21:07:46,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1185 states. [2022-11-02 21:07:46,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1185 to 684. [2022-11-02 21:07:46,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 683 states have (on average 1.4421669106881405) internal successors, (985), 683 states have internal predecessors, (985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:46,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 985 transitions. [2022-11-02 21:07:46,406 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 985 transitions. Word has length 188 [2022-11-02 21:07:46,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:46,406 INFO L495 AbstractCegarLoop]: Abstraction has 684 states and 985 transitions. [2022-11-02 21:07:46,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:46,406 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 985 transitions. [2022-11-02 21:07:46,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:07:46,408 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:46,408 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:46,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:46,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:07:46,625 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:46,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:46,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1384454805, now seen corresponding path program 1 times [2022-11-02 21:07:46,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:07:46,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [773086210] [2022-11-02 21:07:46,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:46,626 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:07:46,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:07:46,628 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:07:46,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-02 21:07:47,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:47,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:07:47,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:47,126 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 21:07:47,127 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:07:47,127 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:07:47,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [773086210] [2022-11-02 21:07:47,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [773086210] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:47,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:47,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:07:47,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843198078] [2022-11-02 21:07:47,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:47,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:07:47,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:07:47,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:07:47,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:07:47,130 INFO L87 Difference]: Start difference. First operand 684 states and 985 transitions. Second operand has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:47,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:47,323 INFO L93 Difference]: Finished difference Result 1651 states and 2406 transitions. [2022-11-02 21:07:47,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:07:47,324 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:07:47,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:47,326 INFO L225 Difference]: With dead ends: 1651 [2022-11-02 21:07:47,326 INFO L226 Difference]: Without dead ends: 1179 [2022-11-02 21:07:47,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:07:47,327 INFO L413 NwaCegarLoop]: 686 mSDtfsCounter, 705 mSDsluCounter, 1565 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 2251 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 148 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:47,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [705 Valid, 2251 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 134 Invalid, 0 Unknown, 148 Unchecked, 0.2s Time] [2022-11-02 21:07:47,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2022-11-02 21:07:47,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 684. [2022-11-02 21:07:47,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 683 states have (on average 1.4407027818448024) internal successors, (984), 683 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:47,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 984 transitions. [2022-11-02 21:07:47,345 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 984 transitions. Word has length 188 [2022-11-02 21:07:47,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:47,345 INFO L495 AbstractCegarLoop]: Abstraction has 684 states and 984 transitions. [2022-11-02 21:07:47,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:47,345 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 984 transitions. [2022-11-02 21:07:47,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:07:47,347 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:47,347 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:47,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:47,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:07:47,568 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:47,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:47,569 INFO L85 PathProgramCache]: Analyzing trace with hash -20736873, now seen corresponding path program 1 times [2022-11-02 21:07:47,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:07:47,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1750731123] [2022-11-02 21:07:47,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:47,570 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:07:47,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:07:47,571 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:07:47,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-02 21:07:47,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:47,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:07:48,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:48,102 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 21:07:48,102 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:07:48,102 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:07:48,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1750731123] [2022-11-02 21:07:48,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1750731123] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:48,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:48,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:07:48,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404704709] [2022-11-02 21:07:48,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:48,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:07:48,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:07:48,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:07:48,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:07:48,104 INFO L87 Difference]: Start difference. First operand 684 states and 984 transitions. Second operand has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:48,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:48,302 INFO L93 Difference]: Finished difference Result 1643 states and 2393 transitions. [2022-11-02 21:07:48,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:07:48,304 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:07:48,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:48,309 INFO L225 Difference]: With dead ends: 1643 [2022-11-02 21:07:48,309 INFO L226 Difference]: Without dead ends: 1173 [2022-11-02 21:07:48,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:07:48,310 INFO L413 NwaCegarLoop]: 682 mSDtfsCounter, 698 mSDsluCounter, 1559 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 2241 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 147 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:48,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [698 Valid, 2241 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 135 Invalid, 0 Unknown, 147 Unchecked, 0.2s Time] [2022-11-02 21:07:48,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1173 states. [2022-11-02 21:07:48,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1173 to 684. [2022-11-02 21:07:48,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 683 states have (on average 1.439238653001464) internal successors, (983), 683 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:48,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 983 transitions. [2022-11-02 21:07:48,328 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 983 transitions. Word has length 188 [2022-11-02 21:07:48,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:48,328 INFO L495 AbstractCegarLoop]: Abstraction has 684 states and 983 transitions. [2022-11-02 21:07:48,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:48,328 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 983 transitions. [2022-11-02 21:07:48,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:07:48,330 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:48,330 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:48,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:48,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:07:48,544 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:48,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:48,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1425843993, now seen corresponding path program 1 times [2022-11-02 21:07:48,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:07:48,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1332246267] [2022-11-02 21:07:48,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:48,546 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:07:48,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:07:48,547 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:07:48,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-02 21:07:48,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:48,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:07:48,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:49,092 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 21:07:49,092 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:07:49,092 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:07:49,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1332246267] [2022-11-02 21:07:49,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1332246267] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:49,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:49,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:07:49,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323812771] [2022-11-02 21:07:49,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:49,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:07:49,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:07:49,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:07:49,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:07:49,094 INFO L87 Difference]: Start difference. First operand 684 states and 983 transitions. Second operand has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:49,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:49,367 INFO L93 Difference]: Finished difference Result 1611 states and 2346 transitions. [2022-11-02 21:07:49,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:07:49,369 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:07:49,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:49,371 INFO L225 Difference]: With dead ends: 1611 [2022-11-02 21:07:49,371 INFO L226 Difference]: Without dead ends: 1149 [2022-11-02 21:07:49,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:07:49,373 INFO L413 NwaCegarLoop]: 669 mSDtfsCounter, 458 mSDsluCounter, 1936 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 458 SdHoareTripleChecker+Valid, 2605 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 136 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:49,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [458 Valid, 2605 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 226 Invalid, 0 Unknown, 136 Unchecked, 0.2s Time] [2022-11-02 21:07:49,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1149 states. [2022-11-02 21:07:49,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1149 to 684. [2022-11-02 21:07:49,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 683 states have (on average 1.437774524158126) internal successors, (982), 683 states have internal predecessors, (982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:49,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 982 transitions. [2022-11-02 21:07:49,391 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 982 transitions. Word has length 188 [2022-11-02 21:07:49,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:49,391 INFO L495 AbstractCegarLoop]: Abstraction has 684 states and 982 transitions. [2022-11-02 21:07:49,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:49,392 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 982 transitions. [2022-11-02 21:07:49,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:07:49,393 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:49,393 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:49,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:49,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:07:49,610 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:49,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:49,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1852398491, now seen corresponding path program 1 times [2022-11-02 21:07:49,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:07:49,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [27313798] [2022-11-02 21:07:49,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:49,612 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:07:49,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:07:49,613 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:07:49,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-02 21:07:50,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:50,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:07:50,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:50,163 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 21:07:50,163 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:07:50,163 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:07:50,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [27313798] [2022-11-02 21:07:50,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [27313798] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:50,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:50,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:07:50,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798776224] [2022-11-02 21:07:50,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:50,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:07:50,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:07:50,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:07:50,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:07:50,165 INFO L87 Difference]: Start difference. First operand 684 states and 982 transitions. Second operand has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:50,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:50,444 INFO L93 Difference]: Finished difference Result 1587 states and 2311 transitions. [2022-11-02 21:07:50,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:07:50,445 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:07:50,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:50,449 INFO L225 Difference]: With dead ends: 1587 [2022-11-02 21:07:50,449 INFO L226 Difference]: Without dead ends: 1131 [2022-11-02 21:07:50,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:07:50,451 INFO L413 NwaCegarLoop]: 659 mSDtfsCounter, 447 mSDsluCounter, 1915 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 2574 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 56 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:50,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [447 Valid, 2574 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 226 Invalid, 0 Unknown, 56 Unchecked, 0.2s Time] [2022-11-02 21:07:50,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1131 states. [2022-11-02 21:07:50,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1131 to 684. [2022-11-02 21:07:50,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 683 states have (on average 1.4363103953147878) internal successors, (981), 683 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:50,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 981 transitions. [2022-11-02 21:07:50,483 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 981 transitions. Word has length 188 [2022-11-02 21:07:50,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:50,483 INFO L495 AbstractCegarLoop]: Abstraction has 684 states and 981 transitions. [2022-11-02 21:07:50,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:50,484 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 981 transitions. [2022-11-02 21:07:50,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:07:50,485 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:50,485 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:50,507 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:50,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:07:50,702 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:50,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:50,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1922046365, now seen corresponding path program 1 times [2022-11-02 21:07:50,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:07:50,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1179512869] [2022-11-02 21:07:50,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:50,704 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:07:50,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:07:50,704 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:07:50,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-02 21:07:51,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:51,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:07:51,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:51,220 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 21:07:51,221 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:07:51,221 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:07:51,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1179512869] [2022-11-02 21:07:51,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1179512869] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:51,221 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:51,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:07:51,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240982219] [2022-11-02 21:07:51,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:51,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:07:51,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:07:51,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:07:51,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:07:51,223 INFO L87 Difference]: Start difference. First operand 684 states and 981 transitions. Second operand has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:51,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:51,441 INFO L93 Difference]: Finished difference Result 1571 states and 2288 transitions. [2022-11-02 21:07:51,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:07:51,443 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:07:51,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:51,452 INFO L225 Difference]: With dead ends: 1571 [2022-11-02 21:07:51,452 INFO L226 Difference]: Without dead ends: 1119 [2022-11-02 21:07:51,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:07:51,453 INFO L413 NwaCegarLoop]: 652 mSDtfsCounter, 647 mSDsluCounter, 1521 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 647 SdHoareTripleChecker+Valid, 2173 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 106 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:51,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [647 Valid, 2173 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 137 Invalid, 0 Unknown, 106 Unchecked, 0.2s Time] [2022-11-02 21:07:51,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1119 states. [2022-11-02 21:07:51,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1119 to 684. [2022-11-02 21:07:51,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 683 states have (on average 1.4348462664714494) internal successors, (980), 683 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:51,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 980 transitions. [2022-11-02 21:07:51,469 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 980 transitions. Word has length 188 [2022-11-02 21:07:51,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:51,470 INFO L495 AbstractCegarLoop]: Abstraction has 684 states and 980 transitions. [2022-11-02 21:07:51,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:51,470 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 980 transitions. [2022-11-02 21:07:51,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:07:51,472 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:51,472 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:51,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:51,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:07:51,689 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:51,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:51,690 INFO L85 PathProgramCache]: Analyzing trace with hash -2009454433, now seen corresponding path program 1 times [2022-11-02 21:07:51,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:07:51,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [664946276] [2022-11-02 21:07:51,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:51,691 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:07:51,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:07:51,691 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:07:51,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-11-02 21:07:52,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:52,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:07:52,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:52,273 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 21:07:52,273 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:07:52,274 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:07:52,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [664946276] [2022-11-02 21:07:52,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [664946276] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:52,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:52,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:07:52,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943110220] [2022-11-02 21:07:52,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:52,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:07:52,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:07:52,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:07:52,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:07:52,276 INFO L87 Difference]: Start difference. First operand 684 states and 980 transitions. Second operand has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:52,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:52,399 INFO L93 Difference]: Finished difference Result 1519 states and 2210 transitions. [2022-11-02 21:07:52,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:07:52,401 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:07:52,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:52,403 INFO L225 Difference]: With dead ends: 1519 [2022-11-02 21:07:52,404 INFO L226 Difference]: Without dead ends: 1069 [2022-11-02 21:07:52,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:07:52,405 INFO L413 NwaCegarLoop]: 506 mSDtfsCounter, 268 mSDsluCounter, 1595 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 2101 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 159 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:52,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 2101 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 159 Unchecked, 0.1s Time] [2022-11-02 21:07:52,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2022-11-02 21:07:52,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 684. [2022-11-02 21:07:52,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 683 states have (on average 1.4333821376281113) internal successors, (979), 683 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:52,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 979 transitions. [2022-11-02 21:07:52,422 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 979 transitions. Word has length 188 [2022-11-02 21:07:52,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:52,422 INFO L495 AbstractCegarLoop]: Abstraction has 684 states and 979 transitions. [2022-11-02 21:07:52,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:52,423 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 979 transitions. [2022-11-02 21:07:52,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:07:52,424 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:52,424 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:52,441 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (33)] Ended with exit code 0 [2022-11-02 21:07:52,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:07:52,641 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:52,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:52,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1740640289, now seen corresponding path program 1 times [2022-11-02 21:07:52,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:07:52,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [693413652] [2022-11-02 21:07:52,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:52,643 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:07:52,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:07:52,644 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:07:52,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-02 21:07:53,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:53,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:07:53,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:53,181 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 21:07:53,181 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:07:53,181 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:07:53,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [693413652] [2022-11-02 21:07:53,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [693413652] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:53,181 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:53,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:07:53,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32642925] [2022-11-02 21:07:53,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:53,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:07:53,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:07:53,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:07:53,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:07:53,183 INFO L87 Difference]: Start difference. First operand 684 states and 979 transitions. Second operand has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:53,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:53,386 INFO L93 Difference]: Finished difference Result 1547 states and 2250 transitions. [2022-11-02 21:07:53,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:07:53,388 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:07:53,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:53,391 INFO L225 Difference]: With dead ends: 1547 [2022-11-02 21:07:53,391 INFO L226 Difference]: Without dead ends: 1101 [2022-11-02 21:07:53,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:07:53,392 INFO L413 NwaCegarLoop]: 641 mSDtfsCounter, 628 mSDsluCounter, 1506 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 628 SdHoareTripleChecker+Valid, 2147 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 142 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:53,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [628 Valid, 2147 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 139 Invalid, 0 Unknown, 142 Unchecked, 0.2s Time] [2022-11-02 21:07:53,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1101 states. [2022-11-02 21:07:53,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1101 to 684. [2022-11-02 21:07:53,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 683 states have (on average 1.4319180087847732) internal successors, (978), 683 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:53,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 978 transitions. [2022-11-02 21:07:53,417 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 978 transitions. Word has length 188 [2022-11-02 21:07:53,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:53,418 INFO L495 AbstractCegarLoop]: Abstraction has 684 states and 978 transitions. [2022-11-02 21:07:53,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:53,418 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 978 transitions. [2022-11-02 21:07:53,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:07:53,420 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:53,420 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:53,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:53,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:07:53,637 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:53,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:53,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1306134691, now seen corresponding path program 1 times [2022-11-02 21:07:53,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:07:53,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [395438568] [2022-11-02 21:07:53,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:53,638 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:07:53,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:07:53,639 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:07:53,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-11-02 21:07:54,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:54,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:07:54,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:54,164 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 21:07:54,164 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:07:54,164 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:07:54,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [395438568] [2022-11-02 21:07:54,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [395438568] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:54,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:54,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:07:54,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285552558] [2022-11-02 21:07:54,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:54,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:07:54,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:07:54,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:07:54,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:07:54,166 INFO L87 Difference]: Start difference. First operand 684 states and 978 transitions. Second operand has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:54,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:54,433 INFO L93 Difference]: Finished difference Result 1539 states and 2237 transitions. [2022-11-02 21:07:54,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:07:54,435 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:07:54,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:54,436 INFO L225 Difference]: With dead ends: 1539 [2022-11-02 21:07:54,437 INFO L226 Difference]: Without dead ends: 1095 [2022-11-02 21:07:54,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:07:54,438 INFO L413 NwaCegarLoop]: 637 mSDtfsCounter, 421 mSDsluCounter, 1870 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 2507 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 56 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:54,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 2507 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 226 Invalid, 0 Unknown, 56 Unchecked, 0.2s Time] [2022-11-02 21:07:54,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1095 states. [2022-11-02 21:07:54,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1095 to 684. [2022-11-02 21:07:54,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 683 states have (on average 1.4304538799414348) internal successors, (977), 683 states have internal predecessors, (977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:54,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 977 transitions. [2022-11-02 21:07:54,458 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 977 transitions. Word has length 188 [2022-11-02 21:07:54,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:54,459 INFO L495 AbstractCegarLoop]: Abstraction has 684 states and 977 transitions. [2022-11-02 21:07:54,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:54,459 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 977 transitions. [2022-11-02 21:07:54,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:07:54,461 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:54,461 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:54,476 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (35)] Ended with exit code 0 [2022-11-02 21:07:54,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:07:54,672 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:54,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:54,673 INFO L85 PathProgramCache]: Analyzing trace with hash 599538085, now seen corresponding path program 1 times [2022-11-02 21:07:54,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:07:54,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [676914827] [2022-11-02 21:07:54,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:54,674 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:07:54,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:07:54,675 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:07:54,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-11-02 21:07:55,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:55,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:07:55,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:55,232 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 21:07:55,233 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:07:55,233 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:07:55,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [676914827] [2022-11-02 21:07:55,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [676914827] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:55,233 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:55,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:07:55,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650418039] [2022-11-02 21:07:55,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:55,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:07:55,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:07:55,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:07:55,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:07:55,235 INFO L87 Difference]: Start difference. First operand 684 states and 977 transitions. Second operand has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:55,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:55,499 INFO L93 Difference]: Finished difference Result 1483 states and 2153 transitions. [2022-11-02 21:07:55,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:07:55,501 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:07:55,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:55,502 INFO L225 Difference]: With dead ends: 1483 [2022-11-02 21:07:55,502 INFO L226 Difference]: Without dead ends: 1053 [2022-11-02 21:07:55,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:07:55,503 INFO L413 NwaCegarLoop]: 616 mSDtfsCounter, 396 mSDsluCounter, 1828 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 2444 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 122 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:55,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [396 Valid, 2444 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 225 Invalid, 0 Unknown, 122 Unchecked, 0.2s Time] [2022-11-02 21:07:55,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1053 states. [2022-11-02 21:07:55,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1053 to 684. [2022-11-02 21:07:55,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 683 states have (on average 1.4289897510980967) internal successors, (976), 683 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:55,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 976 transitions. [2022-11-02 21:07:55,519 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 976 transitions. Word has length 188 [2022-11-02 21:07:55,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:55,520 INFO L495 AbstractCegarLoop]: Abstraction has 684 states and 976 transitions. [2022-11-02 21:07:55,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:55,520 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 976 transitions. [2022-11-02 21:07:55,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:07:55,522 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:55,522 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:55,540 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:55,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:07:55,736 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:55,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:55,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1047824857, now seen corresponding path program 1 times [2022-11-02 21:07:55,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:07:55,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [656137081] [2022-11-02 21:07:55,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:55,738 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:07:55,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:07:55,739 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:07:55,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-11-02 21:07:56,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:56,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:07:56,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:56,316 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 21:07:56,317 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:07:56,317 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:07:56,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [656137081] [2022-11-02 21:07:56,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [656137081] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:56,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:56,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:07:56,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392127337] [2022-11-02 21:07:56,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:56,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:07:56,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:07:56,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:07:56,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:07:56,319 INFO L87 Difference]: Start difference. First operand 684 states and 976 transitions. Second operand has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:56,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:56,516 INFO L93 Difference]: Finished difference Result 1467 states and 2128 transitions. [2022-11-02 21:07:56,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:07:56,517 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:07:56,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:56,519 INFO L225 Difference]: With dead ends: 1467 [2022-11-02 21:07:56,519 INFO L226 Difference]: Without dead ends: 1041 [2022-11-02 21:07:56,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:07:56,520 INFO L413 NwaCegarLoop]: 609 mSDtfsCounter, 571 mSDsluCounter, 1468 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 571 SdHoareTripleChecker+Valid, 2077 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 138 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:56,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [571 Valid, 2077 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 142 Invalid, 0 Unknown, 138 Unchecked, 0.2s Time] [2022-11-02 21:07:56,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1041 states. [2022-11-02 21:07:56,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1041 to 684. [2022-11-02 21:07:56,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 683 states have (on average 1.4275256222547583) internal successors, (975), 683 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:56,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 975 transitions. [2022-11-02 21:07:56,536 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 975 transitions. Word has length 188 [2022-11-02 21:07:56,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:56,536 INFO L495 AbstractCegarLoop]: Abstraction has 684 states and 975 transitions. [2022-11-02 21:07:56,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:56,536 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 975 transitions. [2022-11-02 21:07:56,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:07:56,538 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:56,538 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:56,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:56,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:07:56,752 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:56,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:56,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1105281961, now seen corresponding path program 1 times [2022-11-02 21:07:56,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:07:56,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1208221048] [2022-11-02 21:07:56,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:56,754 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:07:56,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:07:56,756 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:07:56,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-11-02 21:07:57,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:57,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:07:57,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:57,362 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 21:07:57,362 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:07:57,362 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:07:57,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1208221048] [2022-11-02 21:07:57,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1208221048] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:57,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:57,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:07:57,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488936811] [2022-11-02 21:07:57,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:57,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:07:57,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:07:57,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:07:57,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:07:57,364 INFO L87 Difference]: Start difference. First operand 684 states and 975 transitions. Second operand has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:57,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:57,637 INFO L93 Difference]: Finished difference Result 1459 states and 2115 transitions. [2022-11-02 21:07:57,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:07:57,639 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:07:57,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:57,640 INFO L225 Difference]: With dead ends: 1459 [2022-11-02 21:07:57,641 INFO L226 Difference]: Without dead ends: 1035 [2022-11-02 21:07:57,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:07:57,642 INFO L413 NwaCegarLoop]: 605 mSDtfsCounter, 401 mSDsluCounter, 2139 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 2744 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 189 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:57,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [401 Valid, 2744 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 225 Invalid, 0 Unknown, 189 Unchecked, 0.2s Time] [2022-11-02 21:07:57,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1035 states. [2022-11-02 21:07:57,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1035 to 684. [2022-11-02 21:07:57,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 683 states have (on average 1.4260614934114202) internal successors, (974), 683 states have internal predecessors, (974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:57,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 974 transitions. [2022-11-02 21:07:57,660 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 974 transitions. Word has length 188 [2022-11-02 21:07:57,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:57,661 INFO L495 AbstractCegarLoop]: Abstraction has 684 states and 974 transitions. [2022-11-02 21:07:57,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:57,661 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 974 transitions. [2022-11-02 21:07:57,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:07:57,662 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:57,663 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:57,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:57,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:07:57,876 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:57,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:57,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1223723435, now seen corresponding path program 1 times [2022-11-02 21:07:57,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:07:57,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1757737726] [2022-11-02 21:07:57,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:57,878 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:07:57,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:07:57,880 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:07:57,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-11-02 21:07:58,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:58,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:07:58,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:58,438 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 21:07:58,439 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:07:58,439 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:07:58,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1757737726] [2022-11-02 21:07:58,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1757737726] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:58,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:58,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:07:58,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129829059] [2022-11-02 21:07:58,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:58,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:07:58,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:07:58,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:07:58,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:07:58,442 INFO L87 Difference]: Start difference. First operand 684 states and 974 transitions. Second operand has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:58,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:58,735 INFO L93 Difference]: Finished difference Result 1435 states and 2078 transitions. [2022-11-02 21:07:58,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:07:58,736 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:07:58,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:58,738 INFO L225 Difference]: With dead ends: 1435 [2022-11-02 21:07:58,738 INFO L226 Difference]: Without dead ends: 1017 [2022-11-02 21:07:58,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:07:58,739 INFO L413 NwaCegarLoop]: 595 mSDtfsCounter, 391 mSDsluCounter, 2111 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 2706 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 218 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:58,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [391 Valid, 2706 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 225 Invalid, 0 Unknown, 218 Unchecked, 0.3s Time] [2022-11-02 21:07:58,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1017 states. [2022-11-02 21:07:58,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1017 to 684. [2022-11-02 21:07:58,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 683 states have (on average 1.424597364568082) internal successors, (973), 683 states have internal predecessors, (973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:58,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 973 transitions. [2022-11-02 21:07:58,753 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 973 transitions. Word has length 188 [2022-11-02 21:07:58,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:58,754 INFO L495 AbstractCegarLoop]: Abstraction has 684 states and 973 transitions. [2022-11-02 21:07:58,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:58,754 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 973 transitions. [2022-11-02 21:07:58,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:07:58,755 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:58,755 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:58,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:58,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:07:58,972 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:58,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:58,973 INFO L85 PathProgramCache]: Analyzing trace with hash -2040202963, now seen corresponding path program 1 times [2022-11-02 21:07:58,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:07:58,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [299247991] [2022-11-02 21:07:58,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:58,974 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:07:58,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:07:58,975 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:07:58,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-11-02 21:07:59,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:59,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:07:59,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:59,589 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 21:07:59,589 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:07:59,589 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:07:59,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [299247991] [2022-11-02 21:07:59,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [299247991] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:59,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:59,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:07:59,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914744493] [2022-11-02 21:07:59,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:59,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:07:59,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:07:59,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:07:59,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:07:59,591 INFO L87 Difference]: Start difference. First operand 684 states and 973 transitions. Second operand has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:59,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:59,886 INFO L93 Difference]: Finished difference Result 1427 states and 2065 transitions. [2022-11-02 21:07:59,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:07:59,887 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:07:59,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:59,888 INFO L225 Difference]: With dead ends: 1427 [2022-11-02 21:07:59,889 INFO L226 Difference]: Without dead ends: 1011 [2022-11-02 21:07:59,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:07:59,890 INFO L413 NwaCegarLoop]: 591 mSDtfsCounter, 367 mSDsluCounter, 1778 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 2369 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 56 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:59,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 2369 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 225 Invalid, 0 Unknown, 56 Unchecked, 0.3s Time] [2022-11-02 21:07:59,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2022-11-02 21:07:59,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 684. [2022-11-02 21:07:59,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 683 states have (on average 1.4231332357247437) internal successors, (972), 683 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:59,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 972 transitions. [2022-11-02 21:07:59,907 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 972 transitions. Word has length 188 [2022-11-02 21:07:59,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:59,907 INFO L495 AbstractCegarLoop]: Abstraction has 684 states and 972 transitions. [2022-11-02 21:07:59,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:59,907 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 972 transitions. [2022-11-02 21:07:59,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:07:59,909 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:59,909 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:59,926 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (40)] Ended with exit code 0 [2022-11-02 21:08:00,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:00,126 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:00,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:00,126 INFO L85 PathProgramCache]: Analyzing trace with hash -439131857, now seen corresponding path program 1 times [2022-11-02 21:08:00,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:00,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1263019945] [2022-11-02 21:08:00,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:00,128 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:00,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:00,129 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:00,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2022-11-02 21:08:00,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:00,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:08:00,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:00,736 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 21:08:00,737 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:08:00,737 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:00,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1263019945] [2022-11-02 21:08:00,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1263019945] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:00,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:00,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:08:00,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209710387] [2022-11-02 21:08:00,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:00,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:08:00,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:00,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:08:00,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:08:00,739 INFO L87 Difference]: Start difference. First operand 684 states and 972 transitions. Second operand has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:01,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:01,008 INFO L93 Difference]: Finished difference Result 1411 states and 2042 transitions. [2022-11-02 21:08:01,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:08:01,011 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:08:01,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:01,012 INFO L225 Difference]: With dead ends: 1411 [2022-11-02 21:08:01,012 INFO L226 Difference]: Without dead ends: 999 [2022-11-02 21:08:01,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:08:01,013 INFO L413 NwaCegarLoop]: 584 mSDtfsCounter, 359 mSDsluCounter, 2082 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 2666 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 158 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:01,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [359 Valid, 2666 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 224 Invalid, 0 Unknown, 158 Unchecked, 0.2s Time] [2022-11-02 21:08:01,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 999 states. [2022-11-02 21:08:01,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 999 to 684. [2022-11-02 21:08:01,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 683 states have (on average 1.4216691068814056) internal successors, (971), 683 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:01,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 971 transitions. [2022-11-02 21:08:01,030 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 971 transitions. Word has length 188 [2022-11-02 21:08:01,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:01,030 INFO L495 AbstractCegarLoop]: Abstraction has 684 states and 971 transitions. [2022-11-02 21:08:01,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:01,031 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 971 transitions. [2022-11-02 21:08:01,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:08:01,032 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:01,032 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:01,048 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:01,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:01,248 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:01,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:01,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1322640847, now seen corresponding path program 1 times [2022-11-02 21:08:01,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:01,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [560736177] [2022-11-02 21:08:01,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:01,249 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:01,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:01,250 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:01,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2022-11-02 21:08:01,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:01,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:08:01,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:01,827 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 21:08:01,827 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:08:01,828 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:01,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [560736177] [2022-11-02 21:08:01,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [560736177] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:01,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:01,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:08:01,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099426938] [2022-11-02 21:08:01,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:01,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:08:01,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:01,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:08:01,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:08:01,830 INFO L87 Difference]: Start difference. First operand 684 states and 971 transitions. Second operand has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:02,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:02,100 INFO L93 Difference]: Finished difference Result 1403 states and 2029 transitions. [2022-11-02 21:08:02,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:08:02,102 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:08:02,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:02,103 INFO L225 Difference]: With dead ends: 1403 [2022-11-02 21:08:02,103 INFO L226 Difference]: Without dead ends: 993 [2022-11-02 21:08:02,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:08:02,104 INFO L413 NwaCegarLoop]: 580 mSDtfsCounter, 354 mSDsluCounter, 2072 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 2652 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 185 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:02,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [354 Valid, 2652 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 224 Invalid, 0 Unknown, 185 Unchecked, 0.2s Time] [2022-11-02 21:08:02,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 993 states. [2022-11-02 21:08:02,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 993 to 684. [2022-11-02 21:08:02,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 683 states have (on average 1.4202049780380674) internal successors, (970), 683 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:02,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 970 transitions. [2022-11-02 21:08:02,121 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 970 transitions. Word has length 188 [2022-11-02 21:08:02,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:02,122 INFO L495 AbstractCegarLoop]: Abstraction has 684 states and 970 transitions. [2022-11-02 21:08:02,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:02,122 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 970 transitions. [2022-11-02 21:08:02,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:08:02,123 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:02,124 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:02,140 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (42)] Ended with exit code 0 [2022-11-02 21:08:02,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:02,340 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:02,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:02,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1031744435, now seen corresponding path program 1 times [2022-11-02 21:08:02,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:02,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1106103278] [2022-11-02 21:08:02,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:02,342 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:02,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:02,343 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:02,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2022-11-02 21:08:02,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:02,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:08:02,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:02,915 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 21:08:02,915 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:08:02,915 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:02,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1106103278] [2022-11-02 21:08:02,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1106103278] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:02,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:02,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:08:02,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860826289] [2022-11-02 21:08:02,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:02,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:08:02,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:02,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:08:02,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:08:02,917 INFO L87 Difference]: Start difference. First operand 684 states and 970 transitions. Second operand has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:03,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:03,060 INFO L93 Difference]: Finished difference Result 1343 states and 1939 transitions. [2022-11-02 21:08:03,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:08:03,061 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:08:03,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:03,063 INFO L225 Difference]: With dead ends: 1343 [2022-11-02 21:08:03,063 INFO L226 Difference]: Without dead ends: 937 [2022-11-02 21:08:03,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:08:03,064 INFO L413 NwaCegarLoop]: 481 mSDtfsCounter, 262 mSDsluCounter, 1229 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 1710 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 106 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:03,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 1710 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 97 Invalid, 0 Unknown, 106 Unchecked, 0.1s Time] [2022-11-02 21:08:03,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2022-11-02 21:08:03,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 684. [2022-11-02 21:08:03,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 683 states have (on average 1.418740849194729) internal successors, (969), 683 states have internal predecessors, (969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:03,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 969 transitions. [2022-11-02 21:08:03,081 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 969 transitions. Word has length 188 [2022-11-02 21:08:03,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:03,082 INFO L495 AbstractCegarLoop]: Abstraction has 684 states and 969 transitions. [2022-11-02 21:08:03,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:03,082 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 969 transitions. [2022-11-02 21:08:03,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:08:03,084 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:03,084 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:03,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:03,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:03,301 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:03,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:03,301 INFO L85 PathProgramCache]: Analyzing trace with hash 445468213, now seen corresponding path program 1 times [2022-11-02 21:08:03,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:03,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [80861832] [2022-11-02 21:08:03,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:03,302 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:03,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:03,303 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:03,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2022-11-02 21:08:03,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:03,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:08:03,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:03,882 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 21:08:03,883 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:08:03,883 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:03,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [80861832] [2022-11-02 21:08:03,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [80861832] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:03,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:03,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:08:03,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313222818] [2022-11-02 21:08:03,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:03,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:08:03,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:03,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:08:03,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:08:03,886 INFO L87 Difference]: Start difference. First operand 684 states and 969 transitions. Second operand has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:04,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:04,086 INFO L93 Difference]: Finished difference Result 1363 states and 1968 transitions. [2022-11-02 21:08:04,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:08:04,093 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:08:04,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:04,095 INFO L225 Difference]: With dead ends: 1363 [2022-11-02 21:08:04,095 INFO L226 Difference]: Without dead ends: 963 [2022-11-02 21:08:04,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:08:04,097 INFO L413 NwaCegarLoop]: 564 mSDtfsCounter, 491 mSDsluCounter, 1713 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 2277 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 206 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:04,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [491 Valid, 2277 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 149 Invalid, 0 Unknown, 206 Unchecked, 0.2s Time] [2022-11-02 21:08:04,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2022-11-02 21:08:04,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 684. [2022-11-02 21:08:04,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 683 states have (on average 1.417276720351391) internal successors, (968), 683 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:04,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 968 transitions. [2022-11-02 21:08:04,112 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 968 transitions. Word has length 188 [2022-11-02 21:08:04,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:04,113 INFO L495 AbstractCegarLoop]: Abstraction has 684 states and 968 transitions. [2022-11-02 21:08:04,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:04,113 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 968 transitions. [2022-11-02 21:08:04,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:08:04,114 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:04,115 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:04,131 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:04,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:04,328 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:04,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:04,329 INFO L85 PathProgramCache]: Analyzing trace with hash -612369865, now seen corresponding path program 1 times [2022-11-02 21:08:04,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:04,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [504989600] [2022-11-02 21:08:04,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:04,330 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:04,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:04,331 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:04,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2022-11-02 21:08:04,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:04,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:08:04,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:04,940 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 21:08:04,940 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:08:04,940 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:04,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [504989600] [2022-11-02 21:08:04,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [504989600] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:04,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:04,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:08:04,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425495626] [2022-11-02 21:08:04,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:04,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:08:04,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:04,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:08:04,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:08:04,943 INFO L87 Difference]: Start difference. First operand 684 states and 968 transitions. Second operand has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:05,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:05,104 INFO L93 Difference]: Finished difference Result 1311 states and 1890 transitions. [2022-11-02 21:08:05,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:08:05,109 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:08:05,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:05,111 INFO L225 Difference]: With dead ends: 1311 [2022-11-02 21:08:05,111 INFO L226 Difference]: Without dead ends: 913 [2022-11-02 21:08:05,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:08:05,112 INFO L413 NwaCegarLoop]: 476 mSDtfsCounter, 262 mSDsluCounter, 1536 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 2012 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 180 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:05,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 2012 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 106 Invalid, 0 Unknown, 180 Unchecked, 0.1s Time] [2022-11-02 21:08:05,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 913 states. [2022-11-02 21:08:05,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 913 to 684. [2022-11-02 21:08:05,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 683 states have (on average 1.4158125915080526) internal successors, (967), 683 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:05,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 967 transitions. [2022-11-02 21:08:05,127 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 967 transitions. Word has length 188 [2022-11-02 21:08:05,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:05,128 INFO L495 AbstractCegarLoop]: Abstraction has 684 states and 967 transitions. [2022-11-02 21:08:05,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:05,128 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 967 transitions. [2022-11-02 21:08:05,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:08:05,130 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:05,130 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:05,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:05,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:05,346 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:05,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:05,347 INFO L85 PathProgramCache]: Analyzing trace with hash -372130119, now seen corresponding path program 1 times [2022-11-02 21:08:05,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:05,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1294609375] [2022-11-02 21:08:05,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:05,348 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:05,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:05,349 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:05,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2022-11-02 21:08:05,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:05,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:08:05,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:05,936 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 21:08:05,936 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:08:05,937 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:05,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1294609375] [2022-11-02 21:08:05,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1294609375] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:05,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:05,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:08:05,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840780072] [2022-11-02 21:08:05,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:05,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:08:05,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:05,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:08:05,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:08:05,938 INFO L87 Difference]: Start difference. First operand 684 states and 967 transitions. Second operand has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:06,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:06,093 INFO L93 Difference]: Finished difference Result 1303 states and 1877 transitions. [2022-11-02 21:08:06,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:08:06,097 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:08:06,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:06,098 INFO L225 Difference]: With dead ends: 1303 [2022-11-02 21:08:06,099 INFO L226 Difference]: Without dead ends: 907 [2022-11-02 21:08:06,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:08:06,100 INFO L413 NwaCegarLoop]: 477 mSDtfsCounter, 267 mSDsluCounter, 1538 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 2015 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 159 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:06,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 2015 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 109 Invalid, 0 Unknown, 159 Unchecked, 0.1s Time] [2022-11-02 21:08:06,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 907 states. [2022-11-02 21:08:06,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 907 to 684. [2022-11-02 21:08:06,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 683 states have (on average 1.4143484626647145) internal successors, (966), 683 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:06,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 966 transitions. [2022-11-02 21:08:06,116 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 966 transitions. Word has length 188 [2022-11-02 21:08:06,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:06,116 INFO L495 AbstractCegarLoop]: Abstraction has 684 states and 966 transitions. [2022-11-02 21:08:06,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:06,116 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 966 transitions. [2022-11-02 21:08:06,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:08:06,118 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:06,118 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:06,135 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (46)] Ended with exit code 0 [2022-11-02 21:08:06,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:06,335 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:06,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:06,335 INFO L85 PathProgramCache]: Analyzing trace with hash -345064517, now seen corresponding path program 1 times [2022-11-02 21:08:06,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:06,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [982469855] [2022-11-02 21:08:06,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:06,336 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:06,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:06,337 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:06,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2022-11-02 21:08:06,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:06,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:08:06,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:06,936 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 21:08:06,936 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:08:06,936 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:06,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [982469855] [2022-11-02 21:08:06,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [982469855] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:06,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:06,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:08:06,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103819475] [2022-11-02 21:08:06,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:06,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:08:06,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:06,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:08:06,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:08:06,939 INFO L87 Difference]: Start difference. First operand 684 states and 966 transitions. Second operand has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:07,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:07,194 INFO L93 Difference]: Finished difference Result 1331 states and 1917 transitions. [2022-11-02 21:08:07,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:08:07,195 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:08:07,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:07,196 INFO L225 Difference]: With dead ends: 1331 [2022-11-02 21:08:07,196 INFO L226 Difference]: Without dead ends: 939 [2022-11-02 21:08:07,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:08:07,200 INFO L413 NwaCegarLoop]: 549 mSDtfsCounter, 315 mSDsluCounter, 1693 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 2242 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 77 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:07,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 2242 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 224 Invalid, 0 Unknown, 77 Unchecked, 0.2s Time] [2022-11-02 21:08:07,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2022-11-02 21:08:07,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 684. [2022-11-02 21:08:07,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 683 states have (on average 1.4128843338213763) internal successors, (965), 683 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 21:08:07,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 965 transitions. [2022-11-02 21:08:07,209 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 965 transitions. Word has length 188 [2022-11-02 21:08:07,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:07,210 INFO L495 AbstractCegarLoop]: Abstraction has 684 states and 965 transitions. [2022-11-02 21:08:07,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:07,210 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 965 transitions. [2022-11-02 21:08:07,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:08:07,211 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:07,211 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:07,223 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (47)] Ended with exit code 0 [2022-11-02 21:08:07,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:07,412 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:07,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:07,412 INFO L85 PathProgramCache]: Analyzing trace with hash 2038860221, now seen corresponding path program 1 times [2022-11-02 21:08:07,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:07,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [17015431] [2022-11-02 21:08:07,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:07,413 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:07,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:07,414 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:07,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2022-11-02 21:08:07,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:07,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:08:07,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:08,032 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 21:08:08,033 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:08:08,033 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:08,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [17015431] [2022-11-02 21:08:08,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [17015431] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:08,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:08,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:08:08,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658889161] [2022-11-02 21:08:08,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:08,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:08:08,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:08,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:08:08,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:08:08,035 INFO L87 Difference]: Start difference. First operand 684 states and 965 transitions. Second operand has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:08,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:08,298 INFO L93 Difference]: Finished difference Result 1307 states and 1881 transitions. [2022-11-02 21:08:08,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:08:08,299 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:08:08,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:08,300 INFO L225 Difference]: With dead ends: 1307 [2022-11-02 21:08:08,300 INFO L226 Difference]: Without dead ends: 921 [2022-11-02 21:08:08,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:08:08,302 INFO L413 NwaCegarLoop]: 540 mSDtfsCounter, 302 mSDsluCounter, 1964 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 2504 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 75 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:08,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 2504 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 224 Invalid, 0 Unknown, 75 Unchecked, 0.2s Time] [2022-11-02 21:08:08,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 921 states. [2022-11-02 21:08:08,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 921 to 684. [2022-11-02 21:08:08,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 683 states have (on average 1.411420204978038) internal successors, (964), 683 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:08,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 964 transitions. [2022-11-02 21:08:08,318 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 964 transitions. Word has length 188 [2022-11-02 21:08:08,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:08,319 INFO L495 AbstractCegarLoop]: Abstraction has 684 states and 964 transitions. [2022-11-02 21:08:08,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:08,319 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 964 transitions. [2022-11-02 21:08:08,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:08:08,321 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:08,321 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:08,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (48)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:08,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:08,537 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:08,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:08,538 INFO L85 PathProgramCache]: Analyzing trace with hash 822706495, now seen corresponding path program 1 times [2022-11-02 21:08:08,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:08,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1275581693] [2022-11-02 21:08:08,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:08,539 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:08,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:08,540 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:08,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2022-11-02 21:08:08,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:08,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:08:08,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:09,159 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 21:08:09,159 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:08:09,159 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:09,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1275581693] [2022-11-02 21:08:09,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1275581693] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:09,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:09,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:08:09,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080426921] [2022-11-02 21:08:09,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:09,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:08:09,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:09,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:08:09,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:08:09,162 INFO L87 Difference]: Start difference. First operand 684 states and 964 transitions. Second operand has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:09,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:09,478 INFO L93 Difference]: Finished difference Result 1299 states and 1868 transitions. [2022-11-02 21:08:09,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:08:09,480 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:08:09,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:09,482 INFO L225 Difference]: With dead ends: 1299 [2022-11-02 21:08:09,482 INFO L226 Difference]: Without dead ends: 915 [2022-11-02 21:08:09,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:08:09,485 INFO L413 NwaCegarLoop]: 536 mSDtfsCounter, 297 mSDsluCounter, 1666 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 2202 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 92 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:09,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 2202 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 224 Invalid, 0 Unknown, 92 Unchecked, 0.3s Time] [2022-11-02 21:08:09,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2022-11-02 21:08:09,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 684. [2022-11-02 21:08:09,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 683 states have (on average 1.4099560761346999) internal successors, (963), 683 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:09,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 963 transitions. [2022-11-02 21:08:09,503 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 963 transitions. Word has length 188 [2022-11-02 21:08:09,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:09,503 INFO L495 AbstractCegarLoop]: Abstraction has 684 states and 963 transitions. [2022-11-02 21:08:09,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:09,504 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 963 transitions. [2022-11-02 21:08:09,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:08:09,505 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:09,505 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:09,522 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:09,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:09,722 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:09,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:09,722 INFO L85 PathProgramCache]: Analyzing trace with hash -863473343, now seen corresponding path program 1 times [2022-11-02 21:08:09,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:09,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1474384303] [2022-11-02 21:08:09,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:09,723 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:09,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:09,724 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:09,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2022-11-02 21:08:10,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:10,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:08:10,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:10,340 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 21:08:10,341 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:08:10,341 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:10,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1474384303] [2022-11-02 21:08:10,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1474384303] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:10,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:10,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:08:10,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869914578] [2022-11-02 21:08:10,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:10,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:08:10,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:10,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:08:10,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:08:10,342 INFO L87 Difference]: Start difference. First operand 684 states and 963 transitions. Second operand has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:10,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:10,512 INFO L93 Difference]: Finished difference Result 1223 states and 1756 transitions. [2022-11-02 21:08:10,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:08:10,513 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:08:10,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:10,514 INFO L225 Difference]: With dead ends: 1223 [2022-11-02 21:08:10,514 INFO L226 Difference]: Without dead ends: 847 [2022-11-02 21:08:10,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:08:10,515 INFO L413 NwaCegarLoop]: 472 mSDtfsCounter, 277 mSDsluCounter, 1528 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 2000 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 158 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:10,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 2000 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 124 Invalid, 0 Unknown, 158 Unchecked, 0.1s Time] [2022-11-02 21:08:10,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2022-11-02 21:08:10,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 684. [2022-11-02 21:08:10,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 683 states have (on average 1.4084919472913617) internal successors, (962), 683 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:10,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 962 transitions. [2022-11-02 21:08:10,525 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 962 transitions. Word has length 188 [2022-11-02 21:08:10,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:10,526 INFO L495 AbstractCegarLoop]: Abstraction has 684 states and 962 transitions. [2022-11-02 21:08:10,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:10,526 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 962 transitions. [2022-11-02 21:08:10,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:08:10,527 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:10,527 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:10,543 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:10,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:10,728 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:10,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:10,729 INFO L85 PathProgramCache]: Analyzing trace with hash 397443907, now seen corresponding path program 1 times [2022-11-02 21:08:10,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:10,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1068181834] [2022-11-02 21:08:10,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:10,732 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:10,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:10,733 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:10,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2022-11-02 21:08:11,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:11,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:08:11,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:11,429 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 21:08:11,429 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:08:11,429 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:11,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1068181834] [2022-11-02 21:08:11,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1068181834] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:11,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:11,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:08:11,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941310649] [2022-11-02 21:08:11,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:11,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:08:11,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:11,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:08:11,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:08:11,433 INFO L87 Difference]: Start difference. First operand 684 states and 962 transitions. Second operand has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:11,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:11,698 INFO L93 Difference]: Finished difference Result 1235 states and 1774 transitions. [2022-11-02 21:08:11,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:08:11,699 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:08:11,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:11,700 INFO L225 Difference]: With dead ends: 1235 [2022-11-02 21:08:11,700 INFO L226 Difference]: Without dead ends: 867 [2022-11-02 21:08:11,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:08:11,701 INFO L413 NwaCegarLoop]: 510 mSDtfsCounter, 269 mSDsluCounter, 1613 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 2123 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 72 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:11,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 2123 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 223 Invalid, 0 Unknown, 72 Unchecked, 0.2s Time] [2022-11-02 21:08:11,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 867 states. [2022-11-02 21:08:11,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 867 to 684. [2022-11-02 21:08:11,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 683 states have (on average 1.4070278184480234) internal successors, (961), 683 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 21:08:11,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 961 transitions. [2022-11-02 21:08:11,713 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 961 transitions. Word has length 188 [2022-11-02 21:08:11,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:11,714 INFO L495 AbstractCegarLoop]: Abstraction has 684 states and 961 transitions. [2022-11-02 21:08:11,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:11,714 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 961 transitions. [2022-11-02 21:08:11,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:08:11,715 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:11,715 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:11,732 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:11,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:11,928 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:11,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:11,929 INFO L85 PathProgramCache]: Analyzing trace with hash 381925189, now seen corresponding path program 1 times [2022-11-02 21:08:11,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:11,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [462656519] [2022-11-02 21:08:11,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:11,930 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:11,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:11,930 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:11,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2022-11-02 21:08:12,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:12,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:08:12,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:12,566 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 21:08:12,566 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:08:12,566 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:12,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [462656519] [2022-11-02 21:08:12,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [462656519] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:12,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:12,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:08:12,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624341844] [2022-11-02 21:08:12,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:12,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:08:12,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:12,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:08:12,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:08:12,568 INFO L87 Difference]: Start difference. First operand 684 states and 961 transitions. Second operand has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:12,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:12,731 INFO L93 Difference]: Finished difference Result 1175 states and 1686 transitions. [2022-11-02 21:08:12,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:08:12,732 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:08:12,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:12,733 INFO L225 Difference]: With dead ends: 1175 [2022-11-02 21:08:12,734 INFO L226 Difference]: Without dead ends: 809 [2022-11-02 21:08:12,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:08:12,735 INFO L413 NwaCegarLoop]: 458 mSDtfsCounter, 222 mSDsluCounter, 1237 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 1695 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 56 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:12,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 1695 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 128 Invalid, 0 Unknown, 56 Unchecked, 0.1s Time] [2022-11-02 21:08:12,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 809 states. [2022-11-02 21:08:12,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 809 to 688. [2022-11-02 21:08:12,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 688 states, 687 states have (on average 1.4061135371179039) internal successors, (966), 687 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:12,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 966 transitions. [2022-11-02 21:08:12,751 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 966 transitions. Word has length 188 [2022-11-02 21:08:12,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:12,752 INFO L495 AbstractCegarLoop]: Abstraction has 688 states and 966 transitions. [2022-11-02 21:08:12,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:12,752 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 966 transitions. [2022-11-02 21:08:12,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:08:12,754 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:12,754 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:12,770 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (52)] Ended with exit code 0 [2022-11-02 21:08:12,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:12,970 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:12,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:12,971 INFO L85 PathProgramCache]: Analyzing trace with hash -515468089, now seen corresponding path program 1 times [2022-11-02 21:08:12,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:12,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1229314452] [2022-11-02 21:08:12,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:12,972 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:12,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:12,973 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:12,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2022-11-02 21:08:13,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:13,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:08:13,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:13,623 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 21:08:13,623 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:08:13,623 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:13,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1229314452] [2022-11-02 21:08:13,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1229314452] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:13,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:13,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:08:13,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634928333] [2022-11-02 21:08:13,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:13,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:08:13,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:13,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:08:13,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:08:13,626 INFO L87 Difference]: Start difference. First operand 688 states and 966 transitions. Second operand has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:13,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:13,808 INFO L93 Difference]: Finished difference Result 1166 states and 1672 transitions. [2022-11-02 21:08:13,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:08:13,810 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:08:13,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:13,811 INFO L225 Difference]: With dead ends: 1166 [2022-11-02 21:08:13,811 INFO L226 Difference]: Without dead ends: 800 [2022-11-02 21:08:13,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:08:13,813 INFO L413 NwaCegarLoop]: 458 mSDtfsCounter, 267 mSDsluCounter, 1245 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 1703 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 106 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:13,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 1703 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 136 Invalid, 0 Unknown, 106 Unchecked, 0.1s Time] [2022-11-02 21:08:13,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2022-11-02 21:08:13,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 694. [2022-11-02 21:08:13,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 693 states have (on average 1.4054834054834056) internal successors, (974), 693 states have internal predecessors, (974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:13,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 974 transitions. [2022-11-02 21:08:13,830 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 974 transitions. Word has length 188 [2022-11-02 21:08:13,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:13,831 INFO L495 AbstractCegarLoop]: Abstraction has 694 states and 974 transitions. [2022-11-02 21:08:13,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:13,831 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 974 transitions. [2022-11-02 21:08:13,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:08:13,832 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:13,832 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:13,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (53)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:14,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:14,049 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:14,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:14,050 INFO L85 PathProgramCache]: Analyzing trace with hash 144063433, now seen corresponding path program 1 times [2022-11-02 21:08:14,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:14,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1878630320] [2022-11-02 21:08:14,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:14,050 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:14,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:14,051 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:14,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2022-11-02 21:08:14,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:14,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:08:14,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:14,684 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 21:08:14,685 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:08:14,685 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:14,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1878630320] [2022-11-02 21:08:14,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1878630320] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:14,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:14,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:08:14,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776908404] [2022-11-02 21:08:14,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:14,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:08:14,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:14,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:08:14,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:08:14,686 INFO L87 Difference]: Start difference. First operand 694 states and 974 transitions. Second operand has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:14,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:14,892 INFO L93 Difference]: Finished difference Result 1185 states and 1699 transitions. [2022-11-02 21:08:14,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:08:14,894 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:08:14,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:14,895 INFO L225 Difference]: With dead ends: 1185 [2022-11-02 21:08:14,895 INFO L226 Difference]: Without dead ends: 819 [2022-11-02 21:08:14,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:08:14,897 INFO L413 NwaCegarLoop]: 484 mSDtfsCounter, 349 mSDsluCounter, 1304 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 1788 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 107 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:14,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [349 Valid, 1788 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 160 Invalid, 0 Unknown, 107 Unchecked, 0.2s Time] [2022-11-02 21:08:14,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2022-11-02 21:08:14,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 698. [2022-11-02 21:08:14,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 698 states, 697 states have (on average 1.4045911047345767) internal successors, (979), 697 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:14,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 979 transitions. [2022-11-02 21:08:14,913 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 979 transitions. Word has length 188 [2022-11-02 21:08:14,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:14,914 INFO L495 AbstractCegarLoop]: Abstraction has 698 states and 979 transitions. [2022-11-02 21:08:14,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:14,914 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 979 transitions. [2022-11-02 21:08:14,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:08:14,915 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:14,915 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:14,932 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (54)] Ended with exit code 0 [2022-11-02 21:08:15,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:15,132 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:15,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:15,132 INFO L85 PathProgramCache]: Analyzing trace with hash 71676875, now seen corresponding path program 1 times [2022-11-02 21:08:15,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:15,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1686686788] [2022-11-02 21:08:15,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:15,133 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:15,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:15,134 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:15,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2022-11-02 21:08:15,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:15,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:08:15,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:15,768 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 21:08:15,768 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:08:15,768 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:15,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1686686788] [2022-11-02 21:08:15,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1686686788] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:15,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:15,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:08:15,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534888963] [2022-11-02 21:08:15,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:15,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:08:15,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:15,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:08:15,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:08:15,770 INFO L87 Difference]: Start difference. First operand 698 states and 979 transitions. Second operand has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:15,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:15,975 INFO L93 Difference]: Finished difference Result 1179 states and 1689 transitions. [2022-11-02 21:08:15,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:08:15,976 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:08:15,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:15,977 INFO L225 Difference]: With dead ends: 1179 [2022-11-02 21:08:15,977 INFO L226 Difference]: Without dead ends: 813 [2022-11-02 21:08:15,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:08:15,978 INFO L413 NwaCegarLoop]: 480 mSDtfsCounter, 342 mSDsluCounter, 1543 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 2023 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 179 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:15,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 2023 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 161 Invalid, 0 Unknown, 179 Unchecked, 0.2s Time] [2022-11-02 21:08:15,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2022-11-02 21:08:15,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 700. [2022-11-02 21:08:15,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 700 states, 699 states have (on average 1.4034334763948497) internal successors, (981), 699 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:15,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 981 transitions. [2022-11-02 21:08:15,989 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 981 transitions. Word has length 188 [2022-11-02 21:08:15,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:15,989 INFO L495 AbstractCegarLoop]: Abstraction has 700 states and 981 transitions. [2022-11-02 21:08:15,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:15,990 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 981 transitions. [2022-11-02 21:08:15,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:08:15,991 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:15,991 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:16,008 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (55)] Ended with exit code 0 [2022-11-02 21:08:16,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:16,191 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:16,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:16,192 INFO L85 PathProgramCache]: Analyzing trace with hash 773276749, now seen corresponding path program 1 times [2022-11-02 21:08:16,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:16,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1184318325] [2022-11-02 21:08:16,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:16,193 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:16,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:16,194 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:16,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2022-11-02 21:08:16,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:16,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:08:16,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:16,880 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 21:08:16,881 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:08:16,881 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:16,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1184318325] [2022-11-02 21:08:16,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1184318325] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:16,881 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:16,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:08:16,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087049600] [2022-11-02 21:08:16,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:16,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:08:16,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:16,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:08:16,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:08:16,883 INFO L87 Difference]: Start difference. First operand 700 states and 981 transitions. Second operand has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:17,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:17,163 INFO L93 Difference]: Finished difference Result 1167 states and 1670 transitions. [2022-11-02 21:08:17,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:08:17,164 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:08:17,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:17,166 INFO L225 Difference]: With dead ends: 1167 [2022-11-02 21:08:17,166 INFO L226 Difference]: Without dead ends: 801 [2022-11-02 21:08:17,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:08:17,167 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 263 mSDsluCounter, 1537 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 2010 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 116 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:17,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 2010 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 223 Invalid, 0 Unknown, 116 Unchecked, 0.2s Time] [2022-11-02 21:08:17,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2022-11-02 21:08:17,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 704. [2022-11-02 21:08:17,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 704 states, 703 states have (on average 1.402560455192034) internal successors, (986), 703 states have internal predecessors, (986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:17,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 986 transitions. [2022-11-02 21:08:17,185 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 986 transitions. Word has length 188 [2022-11-02 21:08:17,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:17,185 INFO L495 AbstractCegarLoop]: Abstraction has 704 states and 986 transitions. [2022-11-02 21:08:17,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:17,185 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 986 transitions. [2022-11-02 21:08:17,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:08:17,186 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:17,187 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:17,203 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (56)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:17,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:17,400 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:17,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:17,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1598462513, now seen corresponding path program 1 times [2022-11-02 21:08:17,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:17,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1021603831] [2022-11-02 21:08:17,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:17,402 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:17,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:17,402 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:17,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2022-11-02 21:08:17,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:17,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:08:17,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:18,061 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 21:08:18,062 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:08:18,062 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:18,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1021603831] [2022-11-02 21:08:18,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1021603831] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:18,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:18,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:08:18,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691701378] [2022-11-02 21:08:18,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:18,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:08:18,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:18,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:08:18,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:08:18,065 INFO L87 Difference]: Start difference. First operand 704 states and 986 transitions. Second operand has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:18,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:18,251 INFO L93 Difference]: Finished difference Result 1139 states and 1628 transitions. [2022-11-02 21:08:18,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:08:18,252 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:08:18,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:18,254 INFO L225 Difference]: With dead ends: 1139 [2022-11-02 21:08:18,254 INFO L226 Difference]: Without dead ends: 773 [2022-11-02 21:08:18,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:08:18,257 INFO L413 NwaCegarLoop]: 447 mSDtfsCounter, 215 mSDsluCounter, 1237 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 1684 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 65 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:18,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 1684 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 146 Invalid, 0 Unknown, 65 Unchecked, 0.2s Time] [2022-11-02 21:08:18,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2022-11-02 21:08:18,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 706. [2022-11-02 21:08:18,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 706 states, 705 states have (on average 1.401418439716312) internal successors, (988), 705 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:18,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 988 transitions. [2022-11-02 21:08:18,275 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 988 transitions. Word has length 188 [2022-11-02 21:08:18,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:18,275 INFO L495 AbstractCegarLoop]: Abstraction has 706 states and 988 transitions. [2022-11-02 21:08:18,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:18,276 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 988 transitions. [2022-11-02 21:08:18,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:08:18,276 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:18,277 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:18,288 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (57)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:18,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:18,477 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:18,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:18,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1457913903, now seen corresponding path program 1 times [2022-11-02 21:08:18,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:18,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1897502600] [2022-11-02 21:08:18,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:18,478 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:18,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:18,479 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:18,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2022-11-02 21:08:18,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:18,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:08:18,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:19,135 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 21:08:19,135 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:08:19,135 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:19,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1897502600] [2022-11-02 21:08:19,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1897502600] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:19,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:19,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:08:19,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751756165] [2022-11-02 21:08:19,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:19,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:08:19,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:19,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:08:19,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:08:19,137 INFO L87 Difference]: Start difference. First operand 706 states and 988 transitions. Second operand has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:19,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:19,355 INFO L93 Difference]: Finished difference Result 1155 states and 1650 transitions. [2022-11-02 21:08:19,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:08:19,357 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:08:19,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:19,358 INFO L225 Difference]: With dead ends: 1155 [2022-11-02 21:08:19,358 INFO L226 Difference]: Without dead ends: 789 [2022-11-02 21:08:19,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:08:19,360 INFO L413 NwaCegarLoop]: 465 mSDtfsCounter, 316 mSDsluCounter, 1277 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 1742 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 107 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:19,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 1742 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 164 Invalid, 0 Unknown, 107 Unchecked, 0.2s Time] [2022-11-02 21:08:19,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 789 states. [2022-11-02 21:08:19,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 789 to 708. [2022-11-02 21:08:19,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 708 states, 707 states have (on average 1.4002828854314002) internal successors, (990), 707 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:19,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 990 transitions. [2022-11-02 21:08:19,377 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 990 transitions. Word has length 188 [2022-11-02 21:08:19,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:19,378 INFO L495 AbstractCegarLoop]: Abstraction has 708 states and 990 transitions. [2022-11-02 21:08:19,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:19,378 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 990 transitions. [2022-11-02 21:08:19,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:08:19,379 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:19,379 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:19,396 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (58)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:19,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:19,596 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:19,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:19,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1031615059, now seen corresponding path program 1 times [2022-11-02 21:08:19,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:19,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [309271779] [2022-11-02 21:08:19,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:19,597 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:19,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:19,598 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:19,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2022-11-02 21:08:19,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:19,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:08:20,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:20,297 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 21:08:20,297 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:08:20,297 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:20,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [309271779] [2022-11-02 21:08:20,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [309271779] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:20,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:20,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:08:20,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509312997] [2022-11-02 21:08:20,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:20,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:08:20,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:20,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:08:20,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:08:20,299 INFO L87 Difference]: Start difference. First operand 708 states and 990 transitions. Second operand has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:20,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:20,562 INFO L93 Difference]: Finished difference Result 1137 states and 1623 transitions. [2022-11-02 21:08:20,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:08:20,563 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:08:20,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:20,565 INFO L225 Difference]: With dead ends: 1137 [2022-11-02 21:08:20,565 INFO L226 Difference]: Without dead ends: 771 [2022-11-02 21:08:20,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:08:20,566 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 201 mSDsluCounter, 1502 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 1958 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 56 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:20,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 1958 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 223 Invalid, 0 Unknown, 56 Unchecked, 0.2s Time] [2022-11-02 21:08:20,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2022-11-02 21:08:20,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 714. [2022-11-02 21:08:20,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 714 states, 713 states have (on average 1.399719495091164) internal successors, (998), 713 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:20,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 714 states to 714 states and 998 transitions. [2022-11-02 21:08:20,587 INFO L78 Accepts]: Start accepts. Automaton has 714 states and 998 transitions. Word has length 188 [2022-11-02 21:08:20,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:20,588 INFO L495 AbstractCegarLoop]: Abstraction has 714 states and 998 transitions. [2022-11-02 21:08:20,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:20,588 INFO L276 IsEmpty]: Start isEmpty. Operand 714 states and 998 transitions. [2022-11-02 21:08:20,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:08:20,589 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:20,589 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:20,606 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (59)] Ended with exit code 0 [2022-11-02 21:08:20,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:20,806 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:20,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:20,806 INFO L85 PathProgramCache]: Analyzing trace with hash -556732843, now seen corresponding path program 1 times [2022-11-02 21:08:20,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:20,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1277202791] [2022-11-02 21:08:20,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:20,807 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:20,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:20,808 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:20,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2022-11-02 21:08:21,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:21,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:08:21,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:21,617 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 21:08:21,617 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:08:21,618 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:21,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1277202791] [2022-11-02 21:08:21,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1277202791] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:21,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:21,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:08:21,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331567207] [2022-11-02 21:08:21,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:21,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:08:21,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:21,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:08:21,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:08:21,620 INFO L87 Difference]: Start difference. First operand 714 states and 998 transitions. Second operand has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:21,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:21,878 INFO L93 Difference]: Finished difference Result 1131 states and 1613 transitions. [2022-11-02 21:08:21,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:08:21,885 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:08:21,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:21,887 INFO L225 Difference]: With dead ends: 1131 [2022-11-02 21:08:21,887 INFO L226 Difference]: Without dead ends: 765 [2022-11-02 21:08:21,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:08:21,888 INFO L413 NwaCegarLoop]: 452 mSDtfsCounter, 240 mSDsluCounter, 1494 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 1946 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 111 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:21,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 1946 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 223 Invalid, 0 Unknown, 111 Unchecked, 0.2s Time] [2022-11-02 21:08:21,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2022-11-02 21:08:21,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 716. [2022-11-02 21:08:21,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 715 states have (on average 1.3986013986013985) internal successors, (1000), 715 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:21,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 1000 transitions. [2022-11-02 21:08:21,907 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 1000 transitions. Word has length 188 [2022-11-02 21:08:21,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:21,908 INFO L495 AbstractCegarLoop]: Abstraction has 716 states and 1000 transitions. [2022-11-02 21:08:21,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:21,908 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 1000 transitions. [2022-11-02 21:08:21,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:08:21,909 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:21,909 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:21,925 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (60)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:22,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:22,119 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:22,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:22,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1836596521, now seen corresponding path program 1 times [2022-11-02 21:08:22,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:22,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1209490118] [2022-11-02 21:08:22,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:22,120 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:22,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:22,121 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:22,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (61)] Waiting until timeout for monitored process [2022-11-02 21:08:22,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:22,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:08:22,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:22,801 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 21:08:22,801 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:08:22,801 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:22,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1209490118] [2022-11-02 21:08:22,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1209490118] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:22,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:22,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:08:22,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505629439] [2022-11-02 21:08:22,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:22,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:08:22,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:22,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:08:22,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:08:22,803 INFO L87 Difference]: Start difference. First operand 716 states and 1000 transitions. Second operand has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:23,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:23,035 INFO L93 Difference]: Finished difference Result 1119 states and 1594 transitions. [2022-11-02 21:08:23,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:08:23,036 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:08:23,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:23,038 INFO L225 Difference]: With dead ends: 1119 [2022-11-02 21:08:23,038 INFO L226 Difference]: Without dead ends: 753 [2022-11-02 21:08:23,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:08:23,039 INFO L413 NwaCegarLoop]: 445 mSDtfsCounter, 279 mSDsluCounter, 1250 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 1695 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 110 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:23,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 1695 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 168 Invalid, 0 Unknown, 110 Unchecked, 0.2s Time] [2022-11-02 21:08:23,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2022-11-02 21:08:23,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 720. [2022-11-02 21:08:23,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 720 states, 719 states have (on average 1.3977746870653687) internal successors, (1005), 719 states have internal predecessors, (1005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:23,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 1005 transitions. [2022-11-02 21:08:23,064 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 1005 transitions. Word has length 188 [2022-11-02 21:08:23,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:23,064 INFO L495 AbstractCegarLoop]: Abstraction has 720 states and 1005 transitions. [2022-11-02 21:08:23,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:23,065 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 1005 transitions. [2022-11-02 21:08:23,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:08:23,066 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:23,066 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:23,084 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (61)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:23,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:23,279 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:23,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:23,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1135531943, now seen corresponding path program 1 times [2022-11-02 21:08:23,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:23,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1356251759] [2022-11-02 21:08:23,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:23,281 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:23,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:23,282 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:23,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2022-11-02 21:08:23,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:23,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:08:23,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:23,980 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 21:08:23,980 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:08:23,981 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:23,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1356251759] [2022-11-02 21:08:23,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1356251759] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:23,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:23,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:08:23,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650456332] [2022-11-02 21:08:23,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:23,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:08:23,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:23,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:08:23,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:08:23,982 INFO L87 Difference]: Start difference. First operand 720 states and 1005 transitions. Second operand has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:24,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:24,243 INFO L93 Difference]: Finished difference Result 1113 states and 1584 transitions. [2022-11-02 21:08:24,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:08:24,244 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:08:24,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:24,245 INFO L225 Difference]: With dead ends: 1113 [2022-11-02 21:08:24,245 INFO L226 Difference]: Without dead ends: 747 [2022-11-02 21:08:24,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:08:24,247 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 229 mSDsluCounter, 1693 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 2134 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 164 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:24,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 2134 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 223 Invalid, 0 Unknown, 164 Unchecked, 0.2s Time] [2022-11-02 21:08:24,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2022-11-02 21:08:24,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 722. [2022-11-02 21:08:24,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 722 states, 721 states have (on average 1.3966712898751734) internal successors, (1007), 721 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:24,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 1007 transitions. [2022-11-02 21:08:24,266 INFO L78 Accepts]: Start accepts. Automaton has 722 states and 1007 transitions. Word has length 188 [2022-11-02 21:08:24,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:24,267 INFO L495 AbstractCegarLoop]: Abstraction has 722 states and 1007 transitions. [2022-11-02 21:08:24,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:24,267 INFO L276 IsEmpty]: Start isEmpty. Operand 722 states and 1007 transitions. [2022-11-02 21:08:24,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:08:24,268 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:24,268 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:24,288 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (62)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:24,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:24,486 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:24,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:24,486 INFO L85 PathProgramCache]: Analyzing trace with hash -455473573, now seen corresponding path program 1 times [2022-11-02 21:08:24,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:24,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1029536624] [2022-11-02 21:08:24,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:24,488 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:24,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:24,489 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:24,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (63)] Waiting until timeout for monitored process [2022-11-02 21:08:24,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:24,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:08:24,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:25,178 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 21:08:25,178 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:08:25,178 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:25,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1029536624] [2022-11-02 21:08:25,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1029536624] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:25,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:25,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:08:25,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828026526] [2022-11-02 21:08:25,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:25,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:08:25,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:25,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:08:25,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:08:25,180 INFO L87 Difference]: Start difference. First operand 722 states and 1007 transitions. Second operand has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:25,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:25,444 INFO L93 Difference]: Finished difference Result 1103 states and 1569 transitions. [2022-11-02 21:08:25,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:08:25,445 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:08:25,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:25,446 INFO L225 Difference]: With dead ends: 1103 [2022-11-02 21:08:25,446 INFO L226 Difference]: Without dead ends: 737 [2022-11-02 21:08:25,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:08:25,447 INFO L413 NwaCegarLoop]: 435 mSDtfsCounter, 173 mSDsluCounter, 1677 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 2112 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 56 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:25,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 2112 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 223 Invalid, 0 Unknown, 56 Unchecked, 0.2s Time] [2022-11-02 21:08:25,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2022-11-02 21:08:25,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 726. [2022-11-02 21:08:25,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 726 states, 725 states have (on average 1.3958620689655172) internal successors, (1012), 725 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:25,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 726 states to 726 states and 1012 transitions. [2022-11-02 21:08:25,460 INFO L78 Accepts]: Start accepts. Automaton has 726 states and 1012 transitions. Word has length 188 [2022-11-02 21:08:25,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:25,460 INFO L495 AbstractCegarLoop]: Abstraction has 726 states and 1012 transitions. [2022-11-02 21:08:25,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:25,461 INFO L276 IsEmpty]: Start isEmpty. Operand 726 states and 1012 transitions. [2022-11-02 21:08:25,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:08:25,462 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:25,462 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:25,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (63)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:25,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:25,676 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:25,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:25,677 INFO L85 PathProgramCache]: Analyzing trace with hash -453626531, now seen corresponding path program 1 times [2022-11-02 21:08:25,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:25,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1716281392] [2022-11-02 21:08:25,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:25,678 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:25,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:25,680 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:25,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (64)] Waiting until timeout for monitored process [2022-11-02 21:08:26,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:26,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-02 21:08:26,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:27,407 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:08:27,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:08:28,961 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:08:28,962 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:28,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1716281392] [2022-11-02 21:08:28,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1716281392] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:08:28,962 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:08:28,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-11-02 21:08:28,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052995055] [2022-11-02 21:08:28,963 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:08:28,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 21:08:28,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:28,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 21:08:28,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-11-02 21:08:28,964 INFO L87 Difference]: Start difference. First operand 726 states and 1012 transitions. Second operand has 14 states, 14 states have (on average 26.714285714285715) internal successors, (374), 14 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:29,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:29,436 INFO L93 Difference]: Finished difference Result 1099 states and 1565 transitions. [2022-11-02 21:08:29,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:08:29,437 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 26.714285714285715) internal successors, (374), 14 states have internal predecessors, (374), 0 states have call successors, (0), 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 188 [2022-11-02 21:08:29,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:29,438 INFO L225 Difference]: With dead ends: 1099 [2022-11-02 21:08:29,438 INFO L226 Difference]: Without dead ends: 1097 [2022-11-02 21:08:29,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 362 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=130, Invalid=376, Unknown=0, NotChecked=0, Total=506 [2022-11-02 21:08:29,439 INFO L413 NwaCegarLoop]: 476 mSDtfsCounter, 2185 mSDsluCounter, 3619 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2185 SdHoareTripleChecker+Valid, 4095 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 127 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:29,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2185 Valid, 4095 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 99 Invalid, 0 Unknown, 127 Unchecked, 0.2s Time] [2022-11-02 21:08:29,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1097 states. [2022-11-02 21:08:29,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1097 to 726. [2022-11-02 21:08:29,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 726 states, 725 states have (on average 1.3958620689655172) internal successors, (1012), 725 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:29,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 726 states to 726 states and 1012 transitions. [2022-11-02 21:08:29,465 INFO L78 Accepts]: Start accepts. Automaton has 726 states and 1012 transitions. Word has length 188 [2022-11-02 21:08:29,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:29,465 INFO L495 AbstractCegarLoop]: Abstraction has 726 states and 1012 transitions. [2022-11-02 21:08:29,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 26.714285714285715) internal successors, (374), 14 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:29,465 INFO L276 IsEmpty]: Start isEmpty. Operand 726 states and 1012 transitions. [2022-11-02 21:08:29,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2022-11-02 21:08:29,468 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:29,469 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-02 21:08:29,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (64)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:29,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:29,684 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:29,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:29,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1980328325, now seen corresponding path program 1 times [2022-11-02 21:08:29,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:29,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [208462628] [2022-11-02 21:08:29,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:29,686 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:29,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:29,688 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:29,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (65)] Waiting until timeout for monitored process [2022-11-02 21:08:30,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:30,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 1907 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 21:08:30,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:30,745 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 179 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:08:30,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:08:31,073 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 179 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:08:31,073 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:31,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [208462628] [2022-11-02 21:08:31,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [208462628] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:08:31,074 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:08:31,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-11-02 21:08:31,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712162471] [2022-11-02 21:08:31,074 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:08:31,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 21:08:31,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:31,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 21:08:31,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-02 21:08:31,076 INFO L87 Difference]: Start difference. First operand 726 states and 1012 transitions. Second operand has 11 states, 11 states have (on average 37.18181818181818) internal successors, (409), 11 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:31,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:31,726 INFO L93 Difference]: Finished difference Result 2862 states and 4183 transitions. [2022-11-02 21:08:31,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 21:08:31,727 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 37.18181818181818) internal successors, (409), 11 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 371 [2022-11-02 21:08:31,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:31,729 INFO L225 Difference]: With dead ends: 2862 [2022-11-02 21:08:31,729 INFO L226 Difference]: Without dead ends: 2496 [2022-11-02 21:08:31,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 753 GetRequests, 731 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=168, Invalid=384, Unknown=0, NotChecked=0, Total=552 [2022-11-02 21:08:31,730 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 4581 mSDsluCounter, 1605 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4581 SdHoareTripleChecker+Valid, 1884 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:31,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4581 Valid, 1884 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:08:31,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2496 states. [2022-11-02 21:08:31,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2496 to 1178. [2022-11-02 21:08:31,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1178 states, 1177 states have (on average 1.421410365335599) internal successors, (1673), 1177 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:31,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1178 states to 1178 states and 1673 transitions. [2022-11-02 21:08:31,766 INFO L78 Accepts]: Start accepts. Automaton has 1178 states and 1673 transitions. Word has length 371 [2022-11-02 21:08:31,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:31,766 INFO L495 AbstractCegarLoop]: Abstraction has 1178 states and 1673 transitions. [2022-11-02 21:08:31,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 37.18181818181818) internal successors, (409), 11 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:31,767 INFO L276 IsEmpty]: Start isEmpty. Operand 1178 states and 1673 transitions. [2022-11-02 21:08:31,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2022-11-02 21:08:31,770 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:31,770 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-02 21:08:31,795 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (65)] Ended with exit code 0 [2022-11-02 21:08:31,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:31,984 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:31,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:31,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1164281095, now seen corresponding path program 1 times [2022-11-02 21:08:31,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:31,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1059757983] [2022-11-02 21:08:31,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:31,986 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:31,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:31,988 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:32,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (66)] Waiting until timeout for monitored process [2022-11-02 21:08:32,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:32,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 1907 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:08:32,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:32,957 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 177 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:08:32,957 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:08:32,991 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 21:08:32,992 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:32,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1059757983] [2022-11-02 21:08:32,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1059757983] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 21:08:32,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:08:32,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2022-11-02 21:08:32,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580203449] [2022-11-02 21:08:32,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:32,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:08:32,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:32,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:08:32,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:08:32,995 INFO L87 Difference]: Start difference. First operand 1178 states and 1673 transitions. Second operand has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:33,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:33,392 INFO L93 Difference]: Finished difference Result 2514 states and 3633 transitions. [2022-11-02 21:08:33,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:08:33,393 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 371 [2022-11-02 21:08:33,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:33,394 INFO L225 Difference]: With dead ends: 2514 [2022-11-02 21:08:33,395 INFO L226 Difference]: Without dead ends: 1840 [2022-11-02 21:08:33,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 744 GetRequests, 736 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:08:33,396 INFO L413 NwaCegarLoop]: 659 mSDtfsCounter, 811 mSDsluCounter, 674 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 811 SdHoareTripleChecker+Valid, 1333 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:33,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [811 Valid, 1333 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:08:33,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1840 states. [2022-11-02 21:08:33,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1840 to 1178. [2022-11-02 21:08:33,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1178 states, 1177 states have (on average 1.4205607476635513) internal successors, (1672), 1177 states have internal predecessors, (1672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:33,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1178 states to 1178 states and 1672 transitions. [2022-11-02 21:08:33,443 INFO L78 Accepts]: Start accepts. Automaton has 1178 states and 1672 transitions. Word has length 371 [2022-11-02 21:08:33,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:33,443 INFO L495 AbstractCegarLoop]: Abstraction has 1178 states and 1672 transitions. [2022-11-02 21:08:33,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:33,444 INFO L276 IsEmpty]: Start isEmpty. Operand 1178 states and 1672 transitions. [2022-11-02 21:08:33,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2022-11-02 21:08:33,447 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:33,447 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-02 21:08:33,474 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (66)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:33,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:33,662 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:33,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:33,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1531537143, now seen corresponding path program 1 times [2022-11-02 21:08:33,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:33,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [607577589] [2022-11-02 21:08:33,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:33,663 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:33,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:33,664 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:33,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (67)] Waiting until timeout for monitored process [2022-11-02 21:08:34,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:34,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 1907 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 21:08:34,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:34,668 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 175 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:08:34,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:08:34,989 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 175 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:08:34,989 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:34,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [607577589] [2022-11-02 21:08:34,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [607577589] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:08:34,990 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:08:34,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-11-02 21:08:34,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287756363] [2022-11-02 21:08:34,990 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:08:34,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 21:08:34,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:34,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 21:08:34,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-02 21:08:34,992 INFO L87 Difference]: Start difference. First operand 1178 states and 1672 transitions. Second operand has 11 states, 11 states have (on average 37.18181818181818) internal successors, (409), 11 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:35,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:35,655 INFO L93 Difference]: Finished difference Result 3178 states and 4644 transitions. [2022-11-02 21:08:35,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 21:08:35,656 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 37.18181818181818) internal successors, (409), 11 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 371 [2022-11-02 21:08:35,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:35,658 INFO L225 Difference]: With dead ends: 3178 [2022-11-02 21:08:35,658 INFO L226 Difference]: Without dead ends: 2504 [2022-11-02 21:08:35,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 753 GetRequests, 731 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=168, Invalid=384, Unknown=0, NotChecked=0, Total=552 [2022-11-02 21:08:35,660 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 5516 mSDsluCounter, 1598 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5516 SdHoareTripleChecker+Valid, 1877 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:35,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5516 Valid, 1877 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:08:35,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2504 states. [2022-11-02 21:08:35,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2504 to 1186. [2022-11-02 21:08:35,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1186 states, 1185 states have (on average 1.418565400843882) internal successors, (1681), 1185 states have internal predecessors, (1681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:35,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1186 states to 1186 states and 1681 transitions. [2022-11-02 21:08:35,708 INFO L78 Accepts]: Start accepts. Automaton has 1186 states and 1681 transitions. Word has length 371 [2022-11-02 21:08:35,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:35,709 INFO L495 AbstractCegarLoop]: Abstraction has 1186 states and 1681 transitions. [2022-11-02 21:08:35,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 37.18181818181818) internal successors, (409), 11 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:35,709 INFO L276 IsEmpty]: Start isEmpty. Operand 1186 states and 1681 transitions. [2022-11-02 21:08:35,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2022-11-02 21:08:35,713 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:35,713 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-02 21:08:35,731 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (67)] Ended with exit code 0 [2022-11-02 21:08:35,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:35,914 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:35,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:35,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1511996021, now seen corresponding path program 1 times [2022-11-02 21:08:35,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:35,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [453265694] [2022-11-02 21:08:35,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:35,916 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:35,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:35,917 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:35,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (68)] Waiting until timeout for monitored process [2022-11-02 21:08:36,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:36,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 1907 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:08:36,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:36,892 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 173 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:08:36,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:08:36,928 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 21:08:36,928 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:36,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [453265694] [2022-11-02 21:08:36,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [453265694] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 21:08:36,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:08:36,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2022-11-02 21:08:36,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355914594] [2022-11-02 21:08:36,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:36,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:08:36,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:36,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:08:36,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:08:36,930 INFO L87 Difference]: Start difference. First operand 1186 states and 1681 transitions. Second operand has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:37,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:37,288 INFO L93 Difference]: Finished difference Result 2538 states and 3658 transitions. [2022-11-02 21:08:37,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:08:37,288 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 371 [2022-11-02 21:08:37,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:37,290 INFO L225 Difference]: With dead ends: 2538 [2022-11-02 21:08:37,290 INFO L226 Difference]: Without dead ends: 1856 [2022-11-02 21:08:37,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 744 GetRequests, 736 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:08:37,291 INFO L413 NwaCegarLoop]: 662 mSDtfsCounter, 806 mSDsluCounter, 678 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 806 SdHoareTripleChecker+Valid, 1340 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:37,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [806 Valid, 1340 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:08:37,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1856 states. [2022-11-02 21:08:37,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1856 to 1186. [2022-11-02 21:08:37,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1186 states, 1185 states have (on average 1.4177215189873418) internal successors, (1680), 1185 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:37,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1186 states to 1186 states and 1680 transitions. [2022-11-02 21:08:37,334 INFO L78 Accepts]: Start accepts. Automaton has 1186 states and 1680 transitions. Word has length 371 [2022-11-02 21:08:37,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:37,335 INFO L495 AbstractCegarLoop]: Abstraction has 1186 states and 1680 transitions. [2022-11-02 21:08:37,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:37,335 INFO L276 IsEmpty]: Start isEmpty. Operand 1186 states and 1680 transitions. [2022-11-02 21:08:37,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2022-11-02 21:08:37,338 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:37,339 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-02 21:08:37,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (68)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:37,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:37,561 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:37,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:37,561 INFO L85 PathProgramCache]: Analyzing trace with hash -984601971, now seen corresponding path program 1 times [2022-11-02 21:08:37,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:37,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [391389649] [2022-11-02 21:08:37,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:37,562 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:37,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:37,563 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:37,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (69)] Waiting until timeout for monitored process [2022-11-02 21:08:38,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:38,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 1907 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:08:38,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:38,490 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 171 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:08:38,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:08:38,528 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 21:08:38,529 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:38,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [391389649] [2022-11-02 21:08:38,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [391389649] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 21:08:38,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:08:38,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2022-11-02 21:08:38,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885819803] [2022-11-02 21:08:38,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:38,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:08:38,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:38,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:08:38,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:08:38,531 INFO L87 Difference]: Start difference. First operand 1186 states and 1680 transitions. Second operand has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:38,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:38,869 INFO L93 Difference]: Finished difference Result 2538 states and 3655 transitions. [2022-11-02 21:08:38,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:08:38,869 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 371 [2022-11-02 21:08:38,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:38,871 INFO L225 Difference]: With dead ends: 2538 [2022-11-02 21:08:38,871 INFO L226 Difference]: Without dead ends: 1856 [2022-11-02 21:08:38,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 744 GetRequests, 736 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:08:38,873 INFO L413 NwaCegarLoop]: 662 mSDtfsCounter, 803 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 803 SdHoareTripleChecker+Valid, 1341 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:38,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [803 Valid, 1341 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:08:38,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1856 states. [2022-11-02 21:08:38,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1856 to 1186. [2022-11-02 21:08:38,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1186 states, 1185 states have (on average 1.4168776371308016) internal successors, (1679), 1185 states have internal predecessors, (1679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:38,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1186 states to 1186 states and 1679 transitions. [2022-11-02 21:08:38,905 INFO L78 Accepts]: Start accepts. Automaton has 1186 states and 1679 transitions. Word has length 371 [2022-11-02 21:08:38,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:38,905 INFO L495 AbstractCegarLoop]: Abstraction has 1186 states and 1679 transitions. [2022-11-02 21:08:38,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:38,906 INFO L276 IsEmpty]: Start isEmpty. Operand 1186 states and 1679 transitions. [2022-11-02 21:08:38,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2022-11-02 21:08:38,908 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:38,908 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 21:08:38,931 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (69)] Ended with exit code 0 [2022-11-02 21:08:39,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:39,109 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:39,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:39,109 INFO L85 PathProgramCache]: Analyzing trace with hash -336009201, now seen corresponding path program 1 times [2022-11-02 21:08:39,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:39,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1021209385] [2022-11-02 21:08:39,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:39,110 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:39,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:39,111 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:39,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (70)] Waiting until timeout for monitored process [2022-11-02 21:08:39,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:39,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 1907 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 21:08:39,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:40,441 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 169 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:08:40,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:08:41,141 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 169 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:08:41,141 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:41,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1021209385] [2022-11-02 21:08:41,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1021209385] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:08:41,142 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:08:41,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-11-02 21:08:41,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054364086] [2022-11-02 21:08:41,142 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:08:41,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-02 21:08:41,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:41,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-02 21:08:41,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-02 21:08:41,144 INFO L87 Difference]: Start difference. First operand 1186 states and 1679 transitions. Second operand has 13 states, 13 states have (on average 44.0) internal successors, (572), 13 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:41,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:41,765 INFO L93 Difference]: Finished difference Result 3948 states and 5755 transitions. [2022-11-02 21:08:41,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 21:08:41,766 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 44.0) internal successors, (572), 13 states have internal predecessors, (572), 0 states have call successors, (0), 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 371 [2022-11-02 21:08:41,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:41,768 INFO L225 Difference]: With dead ends: 3948 [2022-11-02 21:08:41,769 INFO L226 Difference]: Without dead ends: 3266 [2022-11-02 21:08:41,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 750 GetRequests, 729 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=139, Invalid=367, Unknown=0, NotChecked=0, Total=506 [2022-11-02 21:08:41,770 INFO L413 NwaCegarLoop]: 643 mSDtfsCounter, 2020 mSDsluCounter, 3037 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2020 SdHoareTripleChecker+Valid, 3680 SdHoareTripleChecker+Invalid, 663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 399 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:41,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2020 Valid, 3680 Invalid, 663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 253 Invalid, 0 Unknown, 399 Unchecked, 0.4s Time] [2022-11-02 21:08:41,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3266 states. [2022-11-02 21:08:41,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3266 to 1350. [2022-11-02 21:08:41,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1350 states, 1349 states have (on average 1.413639733135656) internal successors, (1907), 1349 states have internal predecessors, (1907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:41,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1350 states to 1350 states and 1907 transitions. [2022-11-02 21:08:41,849 INFO L78 Accepts]: Start accepts. Automaton has 1350 states and 1907 transitions. Word has length 371 [2022-11-02 21:08:41,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:41,850 INFO L495 AbstractCegarLoop]: Abstraction has 1350 states and 1907 transitions. [2022-11-02 21:08:41,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 44.0) internal successors, (572), 13 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:41,850 INFO L276 IsEmpty]: Start isEmpty. Operand 1350 states and 1907 transitions. [2022-11-02 21:08:41,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2022-11-02 21:08:41,853 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:41,854 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-02 21:08:41,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (70)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:42,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:42,077 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:42,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:42,078 INFO L85 PathProgramCache]: Analyzing trace with hash -245948911, now seen corresponding path program 1 times [2022-11-02 21:08:42,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:42,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1558579572] [2022-11-02 21:08:42,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:42,079 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:42,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:42,080 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:42,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (71)] Waiting until timeout for monitored process [2022-11-02 21:08:42,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:42,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 1907 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:08:42,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:43,015 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 165 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:08:43,015 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:08:43,058 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 21:08:43,058 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:43,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1558579572] [2022-11-02 21:08:43,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1558579572] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 21:08:43,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:08:43,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2022-11-02 21:08:43,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358697268] [2022-11-02 21:08:43,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:43,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:08:43,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:43,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:08:43,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:08:43,060 INFO L87 Difference]: Start difference. First operand 1350 states and 1907 transitions. Second operand has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:43,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:43,485 INFO L93 Difference]: Finished difference Result 2956 states and 4231 transitions. [2022-11-02 21:08:43,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:08:43,486 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 371 [2022-11-02 21:08:43,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:43,489 INFO L225 Difference]: With dead ends: 2956 [2022-11-02 21:08:43,489 INFO L226 Difference]: Without dead ends: 2142 [2022-11-02 21:08:43,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 744 GetRequests, 736 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:08:43,491 INFO L413 NwaCegarLoop]: 668 mSDtfsCounter, 802 mSDsluCounter, 681 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 802 SdHoareTripleChecker+Valid, 1349 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:43,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [802 Valid, 1349 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:08:43,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2142 states. [2022-11-02 21:08:43,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2142 to 1350. [2022-11-02 21:08:43,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1350 states, 1349 states have (on average 1.412898443291327) internal successors, (1906), 1349 states have internal predecessors, (1906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:43,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1350 states to 1350 states and 1906 transitions. [2022-11-02 21:08:43,573 INFO L78 Accepts]: Start accepts. Automaton has 1350 states and 1906 transitions. Word has length 371 [2022-11-02 21:08:43,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:43,573 INFO L495 AbstractCegarLoop]: Abstraction has 1350 states and 1906 transitions. [2022-11-02 21:08:43,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:43,574 INFO L276 IsEmpty]: Start isEmpty. Operand 1350 states and 1906 transitions. [2022-11-02 21:08:43,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2022-11-02 21:08:43,577 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:43,577 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 21:08:43,602 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (71)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:43,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:43,802 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:43,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:43,802 INFO L85 PathProgramCache]: Analyzing trace with hash 2125767955, now seen corresponding path program 1 times [2022-11-02 21:08:43,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:43,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [855116388] [2022-11-02 21:08:43,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:43,803 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:43,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:43,804 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:43,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (72)] Waiting until timeout for monitored process [2022-11-02 21:08:44,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:44,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 1907 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 21:08:44,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:44,783 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 163 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:08:44,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:08:45,119 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 163 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:08:45,119 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:45,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [855116388] [2022-11-02 21:08:45,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [855116388] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:08:45,119 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:08:45,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-11-02 21:08:45,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231128421] [2022-11-02 21:08:45,120 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:08:45,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 21:08:45,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:45,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 21:08:45,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-02 21:08:45,121 INFO L87 Difference]: Start difference. First operand 1350 states and 1906 transitions. Second operand has 11 states, 11 states have (on average 37.18181818181818) internal successors, (409), 11 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:45,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:45,866 INFO L93 Difference]: Finished difference Result 3738 states and 5406 transitions. [2022-11-02 21:08:45,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 21:08:45,867 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 37.18181818181818) internal successors, (409), 11 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 371 [2022-11-02 21:08:45,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:45,870 INFO L225 Difference]: With dead ends: 3738 [2022-11-02 21:08:45,870 INFO L226 Difference]: Without dead ends: 2924 [2022-11-02 21:08:45,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 753 GetRequests, 731 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=168, Invalid=384, Unknown=0, NotChecked=0, Total=552 [2022-11-02 21:08:45,872 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 4675 mSDsluCounter, 1581 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4675 SdHoareTripleChecker+Valid, 1860 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:45,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4675 Valid, 1860 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:08:45,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2924 states. [2022-11-02 21:08:45,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2924 to 1386. [2022-11-02 21:08:45,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1386 states, 1385 states have (on average 1.4086642599277979) internal successors, (1951), 1385 states have internal predecessors, (1951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:45,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1386 states to 1386 states and 1951 transitions. [2022-11-02 21:08:45,938 INFO L78 Accepts]: Start accepts. Automaton has 1386 states and 1951 transitions. Word has length 371 [2022-11-02 21:08:45,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:45,938 INFO L495 AbstractCegarLoop]: Abstraction has 1386 states and 1951 transitions. [2022-11-02 21:08:45,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 37.18181818181818) internal successors, (409), 11 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:45,938 INFO L276 IsEmpty]: Start isEmpty. Operand 1386 states and 1951 transitions. [2022-11-02 21:08:45,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2022-11-02 21:08:45,940 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:45,941 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-02 21:08:45,957 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (72)] Ended with exit code 0 [2022-11-02 21:08:46,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:46,141 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:46,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:46,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1670642539, now seen corresponding path program 1 times [2022-11-02 21:08:46,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:46,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [583661510] [2022-11-02 21:08:46,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:46,143 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:46,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:46,144 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:46,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (73)] Waiting until timeout for monitored process [2022-11-02 21:08:46,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:46,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 1907 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:08:46,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:47,107 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 161 proven. 25 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:08:47,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:08:47,164 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 21:08:47,164 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:47,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [583661510] [2022-11-02 21:08:47,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [583661510] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 21:08:47,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:08:47,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2022-11-02 21:08:47,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940773566] [2022-11-02 21:08:47,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:47,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:08:47,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:47,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:08:47,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:08:47,167 INFO L87 Difference]: Start difference. First operand 1386 states and 1951 transitions. Second operand has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:47,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:47,542 INFO L93 Difference]: Finished difference Result 3064 states and 4364 transitions. [2022-11-02 21:08:47,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:08:47,542 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 371 [2022-11-02 21:08:47,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:47,545 INFO L225 Difference]: With dead ends: 3064 [2022-11-02 21:08:47,545 INFO L226 Difference]: Without dead ends: 2214 [2022-11-02 21:08:47,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 744 GetRequests, 736 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:08:47,547 INFO L413 NwaCegarLoop]: 671 mSDtfsCounter, 797 mSDsluCounter, 685 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 797 SdHoareTripleChecker+Valid, 1356 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:47,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [797 Valid, 1356 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:08:47,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2214 states. [2022-11-02 21:08:47,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2214 to 1386. [2022-11-02 21:08:47,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1386 states, 1385 states have (on average 1.407942238267148) internal successors, (1950), 1385 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:47,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1386 states to 1386 states and 1950 transitions. [2022-11-02 21:08:47,620 INFO L78 Accepts]: Start accepts. Automaton has 1386 states and 1950 transitions. Word has length 371 [2022-11-02 21:08:47,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:47,620 INFO L495 AbstractCegarLoop]: Abstraction has 1386 states and 1950 transitions. [2022-11-02 21:08:47,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:47,620 INFO L276 IsEmpty]: Start isEmpty. Operand 1386 states and 1950 transitions. [2022-11-02 21:08:47,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2022-11-02 21:08:47,624 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:47,624 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 21:08:47,646 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (73)] Ended with exit code 0 [2022-11-02 21:08:47,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:47,825 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:47,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:47,825 INFO L85 PathProgramCache]: Analyzing trace with hash -266773353, now seen corresponding path program 1 times [2022-11-02 21:08:47,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:47,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1272846693] [2022-11-02 21:08:47,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:47,826 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:47,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:47,827 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:47,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (74)] Waiting until timeout for monitored process [2022-11-02 21:08:48,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:48,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 1907 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:08:48,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:48,770 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 159 proven. 27 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:08:48,770 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:08:48,836 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 21:08:48,836 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:48,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1272846693] [2022-11-02 21:08:48,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1272846693] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 21:08:48,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:08:48,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2022-11-02 21:08:48,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581545660] [2022-11-02 21:08:48,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:48,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:08:48,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:48,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:08:48,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:08:48,839 INFO L87 Difference]: Start difference. First operand 1386 states and 1950 transitions. Second operand has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:49,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:49,202 INFO L93 Difference]: Finished difference Result 3064 states and 4361 transitions. [2022-11-02 21:08:49,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:08:49,203 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 371 [2022-11-02 21:08:49,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:49,206 INFO L225 Difference]: With dead ends: 3064 [2022-11-02 21:08:49,206 INFO L226 Difference]: Without dead ends: 2214 [2022-11-02 21:08:49,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 744 GetRequests, 736 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:08:49,207 INFO L413 NwaCegarLoop]: 671 mSDtfsCounter, 794 mSDsluCounter, 686 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 1357 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:49,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [794 Valid, 1357 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:08:49,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2214 states. [2022-11-02 21:08:49,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2214 to 1386. [2022-11-02 21:08:49,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1386 states, 1385 states have (on average 1.4072202166064982) internal successors, (1949), 1385 states have internal predecessors, (1949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:49,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1386 states to 1386 states and 1949 transitions. [2022-11-02 21:08:49,271 INFO L78 Accepts]: Start accepts. Automaton has 1386 states and 1949 transitions. Word has length 371 [2022-11-02 21:08:49,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:49,271 INFO L495 AbstractCegarLoop]: Abstraction has 1386 states and 1949 transitions. [2022-11-02 21:08:49,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:49,271 INFO L276 IsEmpty]: Start isEmpty. Operand 1386 states and 1949 transitions. [2022-11-02 21:08:49,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2022-11-02 21:08:49,273 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:49,274 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 21:08:49,295 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (74)] Ended with exit code 0 [2022-11-02 21:08:49,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 74 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:49,474 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:49,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:49,475 INFO L85 PathProgramCache]: Analyzing trace with hash 400608537, now seen corresponding path program 1 times [2022-11-02 21:08:49,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:49,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1541096027] [2022-11-02 21:08:49,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:49,476 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:49,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:49,477 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:49,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (75)] Waiting until timeout for monitored process [2022-11-02 21:08:50,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:50,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 1907 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-02 21:08:50,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:51,597 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 157 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:08:51,597 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:08:52,890 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 157 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:08:52,891 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:52,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1541096027] [2022-11-02 21:08:52,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1541096027] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:08:52,891 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:08:52,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-11-02 21:08:52,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470697453] [2022-11-02 21:08:52,892 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:08:52,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-02 21:08:52,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:52,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-02 21:08:52,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-02 21:08:52,894 INFO L87 Difference]: Start difference. First operand 1386 states and 1949 transitions. Second operand has 13 states, 13 states have (on average 44.92307692307692) internal successors, (584), 13 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:53,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:53,645 INFO L93 Difference]: Finished difference Result 6578 states and 9448 transitions. [2022-11-02 21:08:53,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 21:08:53,645 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 44.92307692307692) internal successors, (584), 13 states have internal predecessors, (584), 0 states have call successors, (0), 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 371 [2022-11-02 21:08:53,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:53,650 INFO L225 Difference]: With dead ends: 6578 [2022-11-02 21:08:53,650 INFO L226 Difference]: Without dead ends: 5728 [2022-11-02 21:08:53,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 752 GetRequests, 729 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=165, Invalid=435, Unknown=0, NotChecked=0, Total=600 [2022-11-02 21:08:53,653 INFO L413 NwaCegarLoop]: 1179 mSDtfsCounter, 1953 mSDsluCounter, 6768 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1953 SdHoareTripleChecker+Valid, 7947 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 165 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:53,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1953 Valid, 7947 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 240 Invalid, 0 Unknown, 165 Unchecked, 0.3s Time] [2022-11-02 21:08:53,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5728 states. [2022-11-02 21:08:53,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5728 to 2218. [2022-11-02 21:08:53,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2218 states, 2217 states have (on average 1.4140730717185386) internal successors, (3135), 2217 states have internal predecessors, (3135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:53,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2218 states to 2218 states and 3135 transitions. [2022-11-02 21:08:53,769 INFO L78 Accepts]: Start accepts. Automaton has 2218 states and 3135 transitions. Word has length 371 [2022-11-02 21:08:53,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:53,769 INFO L495 AbstractCegarLoop]: Abstraction has 2218 states and 3135 transitions. [2022-11-02 21:08:53,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 44.92307692307692) internal successors, (584), 13 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:53,769 INFO L276 IsEmpty]: Start isEmpty. Operand 2218 states and 3135 transitions. [2022-11-02 21:08:53,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2022-11-02 21:08:53,772 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:53,772 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 21:08:53,792 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (75)] Ended with exit code 0 [2022-11-02 21:08:53,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:53,973 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:53,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:53,973 INFO L85 PathProgramCache]: Analyzing trace with hash 745436699, now seen corresponding path program 1 times [2022-11-02 21:08:53,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:53,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [756829239] [2022-11-02 21:08:53,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:53,974 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:53,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:53,976 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:53,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (76)] Waiting until timeout for monitored process [2022-11-02 21:08:54,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:54,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 1907 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:08:54,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:54,939 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 155 proven. 31 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:08:54,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:08:54,995 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 21:08:54,995 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:54,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [756829239] [2022-11-02 21:08:54,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [756829239] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 21:08:54,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:08:54,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2022-11-02 21:08:54,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079562292] [2022-11-02 21:08:54,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:54,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:08:54,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:54,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:08:54,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:08:54,997 INFO L87 Difference]: Start difference. First operand 2218 states and 3135 transitions. Second operand has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:55,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:55,478 INFO L93 Difference]: Finished difference Result 5116 states and 7274 transitions. [2022-11-02 21:08:55,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:08:55,479 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 371 [2022-11-02 21:08:55,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:55,482 INFO L225 Difference]: With dead ends: 5116 [2022-11-02 21:08:55,482 INFO L226 Difference]: Without dead ends: 3646 [2022-11-02 21:08:55,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 744 GetRequests, 736 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:08:55,483 INFO L413 NwaCegarLoop]: 674 mSDtfsCounter, 789 mSDsluCounter, 690 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 789 SdHoareTripleChecker+Valid, 1364 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:55,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [789 Valid, 1364 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:08:55,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3646 states. [2022-11-02 21:08:55,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3646 to 2218. [2022-11-02 21:08:55,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2218 states, 2217 states have (on average 1.4136220117275597) internal successors, (3134), 2217 states have internal predecessors, (3134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:55,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2218 states to 2218 states and 3134 transitions. [2022-11-02 21:08:55,574 INFO L78 Accepts]: Start accepts. Automaton has 2218 states and 3134 transitions. Word has length 371 [2022-11-02 21:08:55,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:55,574 INFO L495 AbstractCegarLoop]: Abstraction has 2218 states and 3134 transitions. [2022-11-02 21:08:55,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:55,575 INFO L276 IsEmpty]: Start isEmpty. Operand 2218 states and 3134 transitions. [2022-11-02 21:08:55,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2022-11-02 21:08:55,579 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:55,579 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 21:08:55,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (76)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:55,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:55,805 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:55,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:55,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1024034915, now seen corresponding path program 1 times [2022-11-02 21:08:55,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:55,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [347819904] [2022-11-02 21:08:55,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:55,806 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:55,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:55,807 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:55,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (77)] Waiting until timeout for monitored process [2022-11-02 21:08:56,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:56,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 1907 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:08:56,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:56,750 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 153 proven. 33 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:08:56,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:08:56,813 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 21:08:56,813 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:56,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [347819904] [2022-11-02 21:08:56,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [347819904] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 21:08:56,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:08:56,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2022-11-02 21:08:56,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741019590] [2022-11-02 21:08:56,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:56,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:08:56,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:56,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:08:56,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:08:56,815 INFO L87 Difference]: Start difference. First operand 2218 states and 3134 transitions. Second operand has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:57,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:57,257 INFO L93 Difference]: Finished difference Result 5116 states and 7271 transitions. [2022-11-02 21:08:57,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:08:57,257 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 371 [2022-11-02 21:08:57,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:57,262 INFO L225 Difference]: With dead ends: 5116 [2022-11-02 21:08:57,262 INFO L226 Difference]: Without dead ends: 3646 [2022-11-02 21:08:57,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 744 GetRequests, 736 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:08:57,264 INFO L413 NwaCegarLoop]: 674 mSDtfsCounter, 780 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 1370 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:57,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [780 Valid, 1370 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:08:57,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3646 states. [2022-11-02 21:08:57,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3646 to 2218. [2022-11-02 21:08:57,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2218 states, 2217 states have (on average 1.413170951736581) internal successors, (3133), 2217 states have internal predecessors, (3133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:57,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2218 states to 2218 states and 3133 transitions. [2022-11-02 21:08:57,378 INFO L78 Accepts]: Start accepts. Automaton has 2218 states and 3133 transitions. Word has length 371 [2022-11-02 21:08:57,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:57,379 INFO L495 AbstractCegarLoop]: Abstraction has 2218 states and 3133 transitions. [2022-11-02 21:08:57,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:57,379 INFO L276 IsEmpty]: Start isEmpty. Operand 2218 states and 3133 transitions. [2022-11-02 21:08:57,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2022-11-02 21:08:57,382 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:57,382 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 21:08:57,406 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (77)] Ended with exit code 0 [2022-11-02 21:08:57,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:57,583 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:57,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:57,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1865740703, now seen corresponding path program 1 times [2022-11-02 21:08:57,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:57,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1804081435] [2022-11-02 21:08:57,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:57,584 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:57,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:57,585 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:57,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (78)] Waiting until timeout for monitored process [2022-11-02 21:08:58,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:58,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 1907 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:08:58,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:58,526 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 151 proven. 35 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:08:58,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:08:58,587 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 21:08:58,587 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:58,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1804081435] [2022-11-02 21:08:58,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1804081435] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 21:08:58,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:08:58,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2022-11-02 21:08:58,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433880603] [2022-11-02 21:08:58,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:58,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:08:58,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:58,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:08:58,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:08:58,590 INFO L87 Difference]: Start difference. First operand 2218 states and 3133 transitions. Second operand has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:58,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:58,981 INFO L93 Difference]: Finished difference Result 3438 states and 4873 transitions. [2022-11-02 21:08:58,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:08:58,981 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 371 [2022-11-02 21:08:58,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:58,983 INFO L225 Difference]: With dead ends: 3438 [2022-11-02 21:08:58,983 INFO L226 Difference]: Without dead ends: 1968 [2022-11-02 21:08:58,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 744 GetRequests, 736 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:08:58,984 INFO L413 NwaCegarLoop]: 668 mSDtfsCounter, 783 mSDsluCounter, 683 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 783 SdHoareTripleChecker+Valid, 1351 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:58,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [783 Valid, 1351 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:08:58,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1968 states. [2022-11-02 21:08:59,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1968 to 1932. [2022-11-02 21:08:59,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1932 states, 1931 states have (on average 1.400828586224754) internal successors, (2705), 1931 states have internal predecessors, (2705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:59,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1932 states to 1932 states and 2705 transitions. [2022-11-02 21:08:59,055 INFO L78 Accepts]: Start accepts. Automaton has 1932 states and 2705 transitions. Word has length 371 [2022-11-02 21:08:59,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:59,056 INFO L495 AbstractCegarLoop]: Abstraction has 1932 states and 2705 transitions. [2022-11-02 21:08:59,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:59,056 INFO L276 IsEmpty]: Start isEmpty. Operand 1932 states and 2705 transitions. [2022-11-02 21:08:59,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2022-11-02 21:08:59,059 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:59,060 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 21:08:59,077 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (78)] Ended with exit code 0 [2022-11-02 21:08:59,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:59,261 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:59,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:59,262 INFO L85 PathProgramCache]: Analyzing trace with hash -982645727, now seen corresponding path program 1 times [2022-11-02 21:08:59,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:59,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1595342552] [2022-11-02 21:08:59,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:59,263 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:59,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:59,264 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:59,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (79)] Waiting until timeout for monitored process [2022-11-02 21:08:59,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:59,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 1907 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-02 21:08:59,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:09:01,300 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 147 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:01,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:09:15,630 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 147 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:15,630 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:09:15,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1595342552] [2022-11-02 21:09:15,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1595342552] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:09:15,630 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:09:15,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 26 [2022-11-02 21:09:15,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659223810] [2022-11-02 21:09:15,631 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:09:15,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-02 21:09:15,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:09:15,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-02 21:09:15,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=560, Unknown=3, NotChecked=0, Total=650 [2022-11-02 21:09:15,632 INFO L87 Difference]: Start difference. First operand 1932 states and 2705 transitions. Second operand has 26 states, 26 states have (on average 22.76923076923077) internal successors, (592), 26 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:21,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:21,132 INFO L93 Difference]: Finished difference Result 16966 states and 23761 transitions. [2022-11-02 21:09:21,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-11-02 21:09:21,133 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 22.76923076923077) internal successors, (592), 26 states have internal predecessors, (592), 0 states have call successors, (0), 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 371 [2022-11-02 21:09:21,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:21,144 INFO L225 Difference]: With dead ends: 16966 [2022-11-02 21:09:21,145 INFO L226 Difference]: Without dead ends: 15782 [2022-11-02 21:09:21,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 808 GetRequests, 717 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2150 ImplicationChecksByTransitivity, 16.1s TimeCoverageRelationStatistics Valid=1637, Invalid=6916, Unknown=3, NotChecked=0, Total=8556 [2022-11-02 21:09:21,149 INFO L413 NwaCegarLoop]: 1439 mSDtfsCounter, 5645 mSDsluCounter, 14379 mSDsCounter, 0 mSdLazyCounter, 1175 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5645 SdHoareTripleChecker+Valid, 15818 SdHoareTripleChecker+Invalid, 3866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2659 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:21,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5645 Valid, 15818 Invalid, 3866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1175 Invalid, 0 Unknown, 2659 Unchecked, 1.3s Time] [2022-11-02 21:09:21,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15782 states. [2022-11-02 21:09:21,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15782 to 5206. [2022-11-02 21:09:21,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5206 states, 5205 states have (on average 1.425168107588857) internal successors, (7418), 5205 states have internal predecessors, (7418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:21,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5206 states to 5206 states and 7418 transitions. [2022-11-02 21:09:21,477 INFO L78 Accepts]: Start accepts. Automaton has 5206 states and 7418 transitions. Word has length 371 [2022-11-02 21:09:21,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:21,478 INFO L495 AbstractCegarLoop]: Abstraction has 5206 states and 7418 transitions. [2022-11-02 21:09:21,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 22.76923076923077) internal successors, (592), 26 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:21,478 INFO L276 IsEmpty]: Start isEmpty. Operand 5206 states and 7418 transitions. [2022-11-02 21:09:21,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2022-11-02 21:09:21,483 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:21,483 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 21:09:21,501 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (79)] Ended with exit code 0 [2022-11-02 21:09:21,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:09:21,684 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:09:21,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:21,684 INFO L85 PathProgramCache]: Analyzing trace with hash 948479907, now seen corresponding path program 1 times [2022-11-02 21:09:21,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:09:21,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [265624230] [2022-11-02 21:09:21,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:21,686 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:09:21,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:09:21,686 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:09:21,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (80)] Waiting until timeout for monitored process [2022-11-02 21:09:22,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:22,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 1907 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-02 21:09:22,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:09:23,703 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 145 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:23,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:09:25,052 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 145 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:25,052 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:09:25,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [265624230] [2022-11-02 21:09:25,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [265624230] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:09:25,053 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:09:25,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2022-11-02 21:09:25,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116218665] [2022-11-02 21:09:25,053 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:09:25,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 21:09:25,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:09:25,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 21:09:25,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-11-02 21:09:25,054 INFO L87 Difference]: Start difference. First operand 5206 states and 7418 transitions. Second operand has 14 states, 14 states have (on average 41.714285714285715) internal successors, (584), 14 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:26,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:26,455 INFO L93 Difference]: Finished difference Result 18110 states and 25942 transitions. [2022-11-02 21:09:26,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-02 21:09:26,455 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 41.714285714285715) internal successors, (584), 14 states have internal predecessors, (584), 0 states have call successors, (0), 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 371 [2022-11-02 21:09:26,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:26,512 INFO L225 Difference]: With dead ends: 18110 [2022-11-02 21:09:26,513 INFO L226 Difference]: Without dead ends: 14250 [2022-11-02 21:09:26,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 754 GetRequests, 728 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=207, Invalid=549, Unknown=0, NotChecked=0, Total=756 [2022-11-02 21:09:26,516 INFO L413 NwaCegarLoop]: 782 mSDtfsCounter, 2211 mSDsluCounter, 4757 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2211 SdHoareTripleChecker+Valid, 5539 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 182 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:26,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2211 Valid, 5539 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 269 Invalid, 0 Unknown, 182 Unchecked, 0.4s Time] [2022-11-02 21:09:26,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14250 states. [2022-11-02 21:09:26,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14250 to 5312. [2022-11-02 21:09:26,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5312 states, 5311 states have (on average 1.422707588024854) internal successors, (7556), 5311 states have internal predecessors, (7556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:26,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5312 states to 5312 states and 7556 transitions. [2022-11-02 21:09:26,939 INFO L78 Accepts]: Start accepts. Automaton has 5312 states and 7556 transitions. Word has length 371 [2022-11-02 21:09:26,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:26,940 INFO L495 AbstractCegarLoop]: Abstraction has 5312 states and 7556 transitions. [2022-11-02 21:09:26,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 41.714285714285715) internal successors, (584), 14 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:26,940 INFO L276 IsEmpty]: Start isEmpty. Operand 5312 states and 7556 transitions. [2022-11-02 21:09:26,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2022-11-02 21:09:26,945 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:26,945 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 21:09:26,962 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (80)] Ended with exit code 0 [2022-11-02 21:09:27,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:09:27,146 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:09:27,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:27,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1449507931, now seen corresponding path program 1 times [2022-11-02 21:09:27,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:09:27,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1121966371] [2022-11-02 21:09:27,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:27,148 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:09:27,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:09:27,148 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:09:27,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (81)] Waiting until timeout for monitored process [2022-11-02 21:09:27,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:27,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 1907 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:09:27,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:09:28,155 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 143 proven. 43 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:09:28,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:09:28,237 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 21:09:28,238 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:09:28,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1121966371] [2022-11-02 21:09:28,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1121966371] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 21:09:28,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:09:28,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2022-11-02 21:09:28,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983310145] [2022-11-02 21:09:28,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:09:28,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:09:28,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:09:28,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:09:28,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:09:28,240 INFO L87 Difference]: Start difference. First operand 5312 states and 7556 transitions. Second operand has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:28,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:28,977 INFO L93 Difference]: Finished difference Result 13774 states and 19661 transitions. [2022-11-02 21:09:28,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:09:28,978 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 371 [2022-11-02 21:09:28,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:28,984 INFO L225 Difference]: With dead ends: 13774 [2022-11-02 21:09:28,985 INFO L226 Difference]: Without dead ends: 9808 [2022-11-02 21:09:28,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 744 GetRequests, 736 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:09:28,988 INFO L413 NwaCegarLoop]: 683 mSDtfsCounter, 774 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 774 SdHoareTripleChecker+Valid, 1385 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:28,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [774 Valid, 1385 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:09:28,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9808 states. [2022-11-02 21:09:29,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9808 to 5312. [2022-11-02 21:09:29,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5312 states, 5311 states have (on average 1.422331011109019) internal successors, (7554), 5311 states have internal predecessors, (7554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:29,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5312 states to 5312 states and 7554 transitions. [2022-11-02 21:09:29,269 INFO L78 Accepts]: Start accepts. Automaton has 5312 states and 7554 transitions. Word has length 371 [2022-11-02 21:09:29,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:29,270 INFO L495 AbstractCegarLoop]: Abstraction has 5312 states and 7554 transitions. [2022-11-02 21:09:29,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:29,270 INFO L276 IsEmpty]: Start isEmpty. Operand 5312 states and 7554 transitions. [2022-11-02 21:09:29,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2022-11-02 21:09:29,275 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:29,275 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 21:09:29,295 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (81)] Ended with exit code 0 [2022-11-02 21:09:29,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:09:29,476 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:09:29,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:29,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1022953433, now seen corresponding path program 1 times [2022-11-02 21:09:29,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:09:29,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2088752227] [2022-11-02 21:09:29,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:29,477 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:09:29,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:09:29,478 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:09:29,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (82)] Waiting until timeout for monitored process [2022-11-02 21:09:30,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:30,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 1907 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-02 21:09:30,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:09:31,498 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 141 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:31,498 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:09:43,803 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 141 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:43,804 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:09:43,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2088752227] [2022-11-02 21:09:43,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2088752227] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:09:43,804 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:09:43,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 26 [2022-11-02 21:09:43,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770877562] [2022-11-02 21:09:43,805 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:09:43,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-02 21:09:43,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:09:43,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-02 21:09:43,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=561, Unknown=2, NotChecked=0, Total=650 [2022-11-02 21:09:43,807 INFO L87 Difference]: Start difference. First operand 5312 states and 7554 transitions. Second operand has 26 states, 26 states have (on average 22.76923076923077) internal successors, (592), 26 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:47,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:47,983 INFO L93 Difference]: Finished difference Result 21555 states and 30676 transitions. [2022-11-02 21:09:47,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-11-02 21:09:47,983 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 22.76923076923077) internal successors, (592), 26 states have internal predecessors, (592), 0 states have call successors, (0), 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 371 [2022-11-02 21:09:47,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:47,995 INFO L225 Difference]: With dead ends: 21555 [2022-11-02 21:09:47,995 INFO L226 Difference]: Without dead ends: 17589 [2022-11-02 21:09:48,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 804 GetRequests, 726 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1589 ImplicationChecksByTransitivity, 13.3s TimeCoverageRelationStatistics Valid=1275, Invalid=5043, Unknown=2, NotChecked=0, Total=6320 [2022-11-02 21:09:48,000 INFO L413 NwaCegarLoop]: 495 mSDtfsCounter, 7624 mSDsluCounter, 6576 mSDsCounter, 0 mSdLazyCounter, 677 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7624 SdHoareTripleChecker+Valid, 7071 SdHoareTripleChecker+Invalid, 2841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2025 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:48,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7624 Valid, 7071 Invalid, 2841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 677 Invalid, 0 Unknown, 2025 Unchecked, 0.8s Time] [2022-11-02 21:09:48,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17589 states. [2022-11-02 21:09:48,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17589 to 5388. [2022-11-02 21:09:48,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5388 states, 5387 states have (on average 1.4206422869871913) internal successors, (7653), 5387 states have internal predecessors, (7653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:48,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5388 states to 5388 states and 7653 transitions. [2022-11-02 21:09:48,304 INFO L78 Accepts]: Start accepts. Automaton has 5388 states and 7653 transitions. Word has length 371 [2022-11-02 21:09:48,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:48,304 INFO L495 AbstractCegarLoop]: Abstraction has 5388 states and 7653 transitions. [2022-11-02 21:09:48,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 22.76923076923077) internal successors, (592), 26 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:48,304 INFO L276 IsEmpty]: Start isEmpty. Operand 5388 states and 7653 transitions. [2022-11-02 21:09:48,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2022-11-02 21:09:48,310 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:48,311 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 21:09:48,334 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (82)] Forceful destruction successful, exit code 0 [2022-11-02 21:09:48,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:09:48,511 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:09:48,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:48,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1178933975, now seen corresponding path program 1 times [2022-11-02 21:09:48,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:09:48,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [892465406] [2022-11-02 21:09:48,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:48,513 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:09:48,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:09:48,514 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:09:48,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (83)] Waiting until timeout for monitored process [2022-11-02 21:09:49,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:49,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 1907 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-02 21:09:49,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:09:50,580 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 139 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:50,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:09:51,844 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 139 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:51,844 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:09:51,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [892465406] [2022-11-02 21:09:51,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [892465406] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:09:51,844 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:09:51,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2022-11-02 21:09:51,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999163234] [2022-11-02 21:09:51,845 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:09:51,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 21:09:51,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:09:51,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 21:09:51,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-11-02 21:09:51,847 INFO L87 Difference]: Start difference. First operand 5388 states and 7653 transitions. Second operand has 14 states, 14 states have (on average 41.714285714285715) internal successors, (584), 14 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:54,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:54,102 INFO L93 Difference]: Finished difference Result 30296 states and 43393 transitions. [2022-11-02 21:09:54,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-02 21:09:54,103 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 41.714285714285715) internal successors, (584), 14 states have internal predecessors, (584), 0 states have call successors, (0), 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 371 [2022-11-02 21:09:54,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:54,117 INFO L225 Difference]: With dead ends: 30296 [2022-11-02 21:09:54,117 INFO L226 Difference]: Without dead ends: 26254 [2022-11-02 21:09:54,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 758 GetRequests, 728 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=250, Invalid=742, Unknown=0, NotChecked=0, Total=992 [2022-11-02 21:09:54,120 INFO L413 NwaCegarLoop]: 1339 mSDtfsCounter, 2762 mSDsluCounter, 6802 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2762 SdHoareTripleChecker+Valid, 8141 SdHoareTripleChecker+Invalid, 722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 354 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:54,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2762 Valid, 8141 Invalid, 722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 361 Invalid, 0 Unknown, 354 Unchecked, 0.5s Time] [2022-11-02 21:09:54,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26254 states. [2022-11-02 21:09:54,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26254 to 12414. [2022-11-02 21:09:54,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12414 states, 12413 states have (on average 1.4264883589784902) internal successors, (17707), 12413 states have internal predecessors, (17707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:54,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12414 states to 12414 states and 17707 transitions. [2022-11-02 21:09:54,890 INFO L78 Accepts]: Start accepts. Automaton has 12414 states and 17707 transitions. Word has length 371 [2022-11-02 21:09:54,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:54,890 INFO L495 AbstractCegarLoop]: Abstraction has 12414 states and 17707 transitions. [2022-11-02 21:09:54,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 41.714285714285715) internal successors, (584), 14 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:54,890 INFO L276 IsEmpty]: Start isEmpty. Operand 12414 states and 17707 transitions. [2022-11-02 21:09:54,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2022-11-02 21:09:54,899 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:54,899 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 21:09:54,917 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (83)] Ended with exit code 0 [2022-11-02 21:09:55,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:09:55,099 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:09:55,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:55,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1328163499, now seen corresponding path program 1 times [2022-11-02 21:09:55,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:09:55,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [633351908] [2022-11-02 21:09:55,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:55,101 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:09:55,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:09:55,102 INFO L229 MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:09:55,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (84)] Waiting until timeout for monitored process [2022-11-02 21:09:55,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:55,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 1907 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:09:55,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:09:56,047 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 137 proven. 49 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:09:56,047 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:09:56,123 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 21:09:56,124 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:09:56,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [633351908] [2022-11-02 21:09:56,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [633351908] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 21:09:56,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:09:56,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2022-11-02 21:09:56,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126572747] [2022-11-02 21:09:56,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:09:56,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:09:56,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:09:56,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:09:56,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:09:56,125 INFO L87 Difference]: Start difference. First operand 12414 states and 17707 transitions. Second operand has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:57,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:57,463 INFO L93 Difference]: Finished difference Result 33560 states and 47890 transitions. [2022-11-02 21:09:57,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:09:57,463 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 371 [2022-11-02 21:09:57,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:57,474 INFO L225 Difference]: With dead ends: 33560 [2022-11-02 21:09:57,474 INFO L226 Difference]: Without dead ends: 23116 [2022-11-02 21:09:57,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 744 GetRequests, 736 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:09:57,481 INFO L413 NwaCegarLoop]: 689 mSDtfsCounter, 761 mSDsluCounter, 714 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 1403 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:57,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [761 Valid, 1403 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:09:57,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23116 states. [2022-11-02 21:09:58,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23116 to 12414. [2022-11-02 21:09:58,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12414 states, 12413 states have (on average 1.4260049947635542) internal successors, (17701), 12413 states have internal predecessors, (17701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:58,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12414 states to 12414 states and 17701 transitions. [2022-11-02 21:09:58,157 INFO L78 Accepts]: Start accepts. Automaton has 12414 states and 17701 transitions. Word has length 371 [2022-11-02 21:09:58,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:58,157 INFO L495 AbstractCegarLoop]: Abstraction has 12414 states and 17701 transitions. [2022-11-02 21:09:58,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:58,157 INFO L276 IsEmpty]: Start isEmpty. Operand 12414 states and 17701 transitions. [2022-11-02 21:09:58,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2022-11-02 21:09:58,206 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:58,207 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 21:09:58,225 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (84)] Ended with exit code 0 [2022-11-02 21:09:58,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 84 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:09:58,407 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:09:58,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:58,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1397811373, now seen corresponding path program 1 times [2022-11-02 21:09:58,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:09:58,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [564051068] [2022-11-02 21:09:58,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:58,409 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:09:58,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:09:58,410 INFO L229 MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:09:58,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (85)] Waiting until timeout for monitored process [2022-11-02 21:09:59,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:59,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 1907 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:09:59,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:09:59,423 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 133 proven. 53 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:09:59,423 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:09:59,526 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 21:09:59,526 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:09:59,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [564051068] [2022-11-02 21:09:59,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [564051068] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 21:09:59,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:09:59,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2022-11-02 21:09:59,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200503095] [2022-11-02 21:09:59,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:09:59,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:09:59,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:09:59,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:09:59,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:09:59,528 INFO L87 Difference]: Start difference. First operand 12414 states and 17701 transitions. Second operand has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:01,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:01,048 INFO L93 Difference]: Finished difference Result 33552 states and 47868 transitions. [2022-11-02 21:10:01,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:10:01,049 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 371 [2022-11-02 21:10:01,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:01,061 INFO L225 Difference]: With dead ends: 33552 [2022-11-02 21:10:01,061 INFO L226 Difference]: Without dead ends: 23108 [2022-11-02 21:10:01,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 744 GetRequests, 736 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:10:01,067 INFO L413 NwaCegarLoop]: 692 mSDtfsCounter, 756 mSDsluCounter, 718 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 756 SdHoareTripleChecker+Valid, 1410 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:01,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [756 Valid, 1410 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:10:01,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23108 states. [2022-11-02 21:10:01,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23108 to 12414. [2022-11-02 21:10:01,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12414 states, 12413 states have (on average 1.4255216305486185) internal successors, (17695), 12413 states have internal predecessors, (17695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:01,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12414 states to 12414 states and 17695 transitions. [2022-11-02 21:10:01,854 INFO L78 Accepts]: Start accepts. Automaton has 12414 states and 17695 transitions. Word has length 371 [2022-11-02 21:10:01,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:01,854 INFO L495 AbstractCegarLoop]: Abstraction has 12414 states and 17695 transitions. [2022-11-02 21:10:01,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:01,854 INFO L276 IsEmpty]: Start isEmpty. Operand 12414 states and 17695 transitions. [2022-11-02 21:10:01,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2022-11-02 21:10:01,862 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:01,863 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 21:10:01,879 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (85)] Ended with exit code 0 [2022-11-02 21:10:02,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:10:02,064 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:10:02,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:02,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1761277871, now seen corresponding path program 1 times [2022-11-02 21:10:02,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:10:02,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [121385413] [2022-11-02 21:10:02,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:02,066 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:10:02,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:10:02,067 INFO L229 MonitoredProcess]: Starting monitored process 86 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:10:02,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (86)] Waiting until timeout for monitored process [2022-11-02 21:10:02,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:02,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 1907 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:10:02,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:10:03,007 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 131 proven. 55 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:10:03,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:10:03,089 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 21:10:03,090 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:10:03,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [121385413] [2022-11-02 21:10:03,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [121385413] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 21:10:03,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:10:03,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2022-11-02 21:10:03,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106025466] [2022-11-02 21:10:03,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:10:03,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:10:03,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:10:03,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:10:03,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:10:03,092 INFO L87 Difference]: Start difference. First operand 12414 states and 17695 transitions. Second operand has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:04,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:04,399 INFO L93 Difference]: Finished difference Result 33548 states and 47844 transitions. [2022-11-02 21:10:04,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:10:04,399 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 371 [2022-11-02 21:10:04,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:04,413 INFO L225 Difference]: With dead ends: 33548 [2022-11-02 21:10:04,413 INFO L226 Difference]: Without dead ends: 23104 [2022-11-02 21:10:04,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 744 GetRequests, 736 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:10:04,419 INFO L413 NwaCegarLoop]: 692 mSDtfsCounter, 759 mSDsluCounter, 714 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 759 SdHoareTripleChecker+Valid, 1406 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:04,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [759 Valid, 1406 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:10:04,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23104 states. [2022-11-02 21:10:05,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23104 to 12414. [2022-11-02 21:10:05,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12414 states, 12413 states have (on average 1.4250382663336825) internal successors, (17689), 12413 states have internal predecessors, (17689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:05,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12414 states to 12414 states and 17689 transitions. [2022-11-02 21:10:05,116 INFO L78 Accepts]: Start accepts. Automaton has 12414 states and 17689 transitions. Word has length 371 [2022-11-02 21:10:05,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:05,116 INFO L495 AbstractCegarLoop]: Abstraction has 12414 states and 17689 transitions. [2022-11-02 21:10:05,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:05,116 INFO L276 IsEmpty]: Start isEmpty. Operand 12414 states and 17689 transitions. [2022-11-02 21:10:05,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2022-11-02 21:10:05,128 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:05,128 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 21:10:05,151 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (86)] Ended with exit code 0 [2022-11-02 21:10:05,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:10:05,344 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:10:05,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:05,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1216405297, now seen corresponding path program 1 times [2022-11-02 21:10:05,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:10:05,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1196715807] [2022-11-02 21:10:05,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:05,347 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:10:05,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:10:05,348 INFO L229 MonitoredProcess]: Starting monitored process 87 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:10:05,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (87)] Waiting until timeout for monitored process [2022-11-02 21:10:05,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:05,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 1907 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-02 21:10:05,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:10:07,519 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 129 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:10:07,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:10:08,877 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 129 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:10:08,877 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:10:08,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1196715807] [2022-11-02 21:10:08,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1196715807] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:10:08,878 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:10:08,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2022-11-02 21:10:08,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665701826] [2022-11-02 21:10:08,878 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:10:08,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 21:10:08,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:10:08,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 21:10:08,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-11-02 21:10:08,880 INFO L87 Difference]: Start difference. First operand 12414 states and 17689 transitions. Second operand has 14 states, 14 states have (on average 41.714285714285715) internal successors, (584), 14 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:11,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:11,206 INFO L93 Difference]: Finished difference Result 42744 states and 61101 transitions. [2022-11-02 21:10:11,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-02 21:10:11,207 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 41.714285714285715) internal successors, (584), 14 states have internal predecessors, (584), 0 states have call successors, (0), 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 371 [2022-11-02 21:10:11,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:11,224 INFO L225 Difference]: With dead ends: 42744 [2022-11-02 21:10:11,224 INFO L226 Difference]: Without dead ends: 32300 [2022-11-02 21:10:11,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 754 GetRequests, 728 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=202, Invalid=554, Unknown=0, NotChecked=0, Total=756 [2022-11-02 21:10:11,230 INFO L413 NwaCegarLoop]: 782 mSDtfsCounter, 2401 mSDsluCounter, 4572 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2401 SdHoareTripleChecker+Valid, 5354 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 191 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:11,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2401 Valid, 5354 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 270 Invalid, 0 Unknown, 191 Unchecked, 0.4s Time] [2022-11-02 21:10:11,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32300 states. [2022-11-02 21:10:11,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32300 to 12702. [2022-11-02 21:10:11,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12702 states, 12701 states have (on average 1.4234312258877253) internal successors, (18079), 12701 states have internal predecessors, (18079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:11,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12702 states to 12702 states and 18079 transitions. [2022-11-02 21:10:11,958 INFO L78 Accepts]: Start accepts. Automaton has 12702 states and 18079 transitions. Word has length 371 [2022-11-02 21:10:11,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:11,958 INFO L495 AbstractCegarLoop]: Abstraction has 12702 states and 18079 transitions. [2022-11-02 21:10:11,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 41.714285714285715) internal successors, (584), 14 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:11,959 INFO L276 IsEmpty]: Start isEmpty. Operand 12702 states and 18079 transitions. [2022-11-02 21:10:11,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2022-11-02 21:10:11,973 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:11,973 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1] [2022-11-02 21:10:12,000 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (87)] Ended with exit code 0 [2022-11-02 21:10:12,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:10:12,188 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:10:12,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:12,189 INFO L85 PathProgramCache]: Analyzing trace with hash 268353331, now seen corresponding path program 1 times [2022-11-02 21:10:12,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:10:12,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [386603021] [2022-11-02 21:10:12,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:12,190 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:10:12,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:10:12,191 INFO L229 MonitoredProcess]: Starting monitored process 88 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:10:12,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (88)] Waiting until timeout for monitored process [2022-11-02 21:10:12,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:12,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 1907 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:10:12,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:10:13,191 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 127 proven. 59 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:10:13,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:10:13,282 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 21:10:13,283 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:10:13,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [386603021] [2022-11-02 21:10:13,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [386603021] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 21:10:13,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:10:13,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2022-11-02 21:10:13,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21717977] [2022-11-02 21:10:13,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:10:13,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:10:13,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:10:13,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:10:13,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:10:13,285 INFO L87 Difference]: Start difference. First operand 12702 states and 18079 transitions. Second operand has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:14,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:14,651 INFO L93 Difference]: Finished difference Result 34404 states and 48984 transitions. [2022-11-02 21:10:14,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:10:14,651 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 371 [2022-11-02 21:10:14,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:14,663 INFO L225 Difference]: With dead ends: 34404 [2022-11-02 21:10:14,663 INFO L226 Difference]: Without dead ends: 23672 [2022-11-02 21:10:14,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 744 GetRequests, 736 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:10:14,669 INFO L413 NwaCegarLoop]: 695 mSDtfsCounter, 748 mSDsluCounter, 723 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 748 SdHoareTripleChecker+Valid, 1418 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:14,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [748 Valid, 1418 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:10:14,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23672 states. [2022-11-02 21:10:15,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23672 to 12702. [2022-11-02 21:10:15,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12702 states, 12701 states have (on average 1.422958822139989) internal successors, (18073), 12701 states have internal predecessors, (18073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:15,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12702 states to 12702 states and 18073 transitions. [2022-11-02 21:10:15,309 INFO L78 Accepts]: Start accepts. Automaton has 12702 states and 18073 transitions. Word has length 371 [2022-11-02 21:10:15,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:15,309 INFO L495 AbstractCegarLoop]: Abstraction has 12702 states and 18073 transitions. [2022-11-02 21:10:15,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:15,309 INFO L276 IsEmpty]: Start isEmpty. Operand 12702 states and 18073 transitions. [2022-11-02 21:10:15,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2022-11-02 21:10:15,317 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:15,317 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1] [2022-11-02 21:10:15,339 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (88)] Forceful destruction successful, exit code 0 [2022-11-02 21:10:15,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:10:15,518 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:10:15,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:15,518 INFO L85 PathProgramCache]: Analyzing trace with hash -166152267, now seen corresponding path program 1 times [2022-11-02 21:10:15,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:10:15,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [429449211] [2022-11-02 21:10:15,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:15,519 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:10:15,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:10:15,520 INFO L229 MonitoredProcess]: Starting monitored process 89 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:10:15,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (89)] Waiting until timeout for monitored process [2022-11-02 21:10:16,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:16,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 1907 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:10:16,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:10:16,481 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 125 proven. 61 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:10:16,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:10:16,569 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 21:10:16,570 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:10:16,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [429449211] [2022-11-02 21:10:16,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [429449211] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 21:10:16,570 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:10:16,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2022-11-02 21:10:16,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673775268] [2022-11-02 21:10:16,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:10:16,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:10:16,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:10:16,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:10:16,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:10:16,571 INFO L87 Difference]: Start difference. First operand 12702 states and 18073 transitions. Second operand has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:18,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:18,137 INFO L93 Difference]: Finished difference Result 34400 states and 48960 transitions. [2022-11-02 21:10:18,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:10:18,137 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 371 [2022-11-02 21:10:18,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:18,152 INFO L225 Difference]: With dead ends: 34400 [2022-11-02 21:10:18,152 INFO L226 Difference]: Without dead ends: 23668 [2022-11-02 21:10:18,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 744 GetRequests, 736 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:10:18,160 INFO L413 NwaCegarLoop]: 695 mSDtfsCounter, 745 mSDsluCounter, 724 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 745 SdHoareTripleChecker+Valid, 1419 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:18,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [745 Valid, 1419 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:10:18,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23668 states. [2022-11-02 21:10:18,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23668 to 12702. [2022-11-02 21:10:18,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12702 states, 12701 states have (on average 1.4224864183922525) internal successors, (18067), 12701 states have internal predecessors, (18067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:18,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12702 states to 12702 states and 18067 transitions. [2022-11-02 21:10:18,934 INFO L78 Accepts]: Start accepts. Automaton has 12702 states and 18067 transitions. Word has length 371 [2022-11-02 21:10:18,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:18,934 INFO L495 AbstractCegarLoop]: Abstraction has 12702 states and 18067 transitions. [2022-11-02 21:10:18,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:18,934 INFO L276 IsEmpty]: Start isEmpty. Operand 12702 states and 18067 transitions. [2022-11-02 21:10:18,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2022-11-02 21:10:18,942 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:18,943 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:18,960 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (89)] Ended with exit code 0 [2022-11-02 21:10:19,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 89 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:10:19,143 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:10:19,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:19,144 INFO L85 PathProgramCache]: Analyzing trace with hash -872748873, now seen corresponding path program 1 times [2022-11-02 21:10:19,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:10:19,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2144031913] [2022-11-02 21:10:19,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:19,145 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:10:19,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:10:19,146 INFO L229 MonitoredProcess]: Starting monitored process 90 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:10:19,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (90)] Waiting until timeout for monitored process [2022-11-02 21:10:19,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:19,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 1907 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-02 21:10:19,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:10:21,268 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 119 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:10:21,269 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:10:22,587 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 119 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:10:22,587 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:10:22,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2144031913] [2022-11-02 21:10:22,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2144031913] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:10:22,588 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:10:22,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2022-11-02 21:10:22,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78328314] [2022-11-02 21:10:22,588 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:10:22,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 21:10:22,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:10:22,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 21:10:22,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-11-02 21:10:22,590 INFO L87 Difference]: Start difference. First operand 12702 states and 18067 transitions. Second operand has 14 states, 14 states have (on average 41.714285714285715) internal successors, (584), 14 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:24,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:24,938 INFO L93 Difference]: Finished difference Result 43582 states and 62226 transitions. [2022-11-02 21:10:24,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 21:10:24,938 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 41.714285714285715) internal successors, (584), 14 states have internal predecessors, (584), 0 states have call successors, (0), 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 371 [2022-11-02 21:10:24,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:24,961 INFO L225 Difference]: With dead ends: 43582 [2022-11-02 21:10:24,961 INFO L226 Difference]: Without dead ends: 32850 [2022-11-02 21:10:24,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 755 GetRequests, 728 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=218, Invalid=594, Unknown=0, NotChecked=0, Total=812 [2022-11-02 21:10:24,971 INFO L413 NwaCegarLoop]: 1081 mSDtfsCounter, 2607 mSDsluCounter, 5368 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2607 SdHoareTripleChecker+Valid, 6449 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 196 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:24,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2607 Valid, 6449 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 275 Invalid, 0 Unknown, 196 Unchecked, 0.4s Time] [2022-11-02 21:10:24,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32850 states. [2022-11-02 21:10:25,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32850 to 12902. [2022-11-02 21:10:25,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12902 states, 12901 states have (on average 1.4215177118052864) internal successors, (18339), 12901 states have internal predecessors, (18339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:25,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12902 states to 12902 states and 18339 transitions. [2022-11-02 21:10:25,770 INFO L78 Accepts]: Start accepts. Automaton has 12902 states and 18339 transitions. Word has length 371 [2022-11-02 21:10:25,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:25,771 INFO L495 AbstractCegarLoop]: Abstraction has 12902 states and 18339 transitions. [2022-11-02 21:10:25,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 41.714285714285715) internal successors, (584), 14 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:25,771 INFO L276 IsEmpty]: Start isEmpty. Operand 12902 states and 18339 transitions. [2022-11-02 21:10:25,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2022-11-02 21:10:25,779 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:25,779 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:25,799 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (90)] Ended with exit code 0 [2022-11-02 21:10:25,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:10:25,980 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:10:25,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:25,980 INFO L85 PathProgramCache]: Analyzing trace with hash 2140046137, now seen corresponding path program 1 times [2022-11-02 21:10:25,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:10:25,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2096899925] [2022-11-02 21:10:25,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:25,982 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:10:25,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:10:25,982 INFO L229 MonitoredProcess]: Starting monitored process 91 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:10:25,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (91)] Waiting until timeout for monitored process [2022-11-02 21:10:26,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:26,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 1907 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-02 21:10:26,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:10:28,150 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 113 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:10:28,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:10:29,479 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 113 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:10:29,479 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:10:29,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2096899925] [2022-11-02 21:10:29,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2096899925] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:10:29,479 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:10:29,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2022-11-02 21:10:29,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380423092] [2022-11-02 21:10:29,480 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:10:29,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 21:10:29,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:10:29,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 21:10:29,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-11-02 21:10:29,481 INFO L87 Difference]: Start difference. First operand 12902 states and 18339 transitions. Second operand has 14 states, 14 states have (on average 41.714285714285715) internal successors, (584), 14 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:31,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:31,697 INFO L93 Difference]: Finished difference Result 43408 states and 61905 transitions. [2022-11-02 21:10:31,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-02 21:10:31,698 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 41.714285714285715) internal successors, (584), 14 states have internal predecessors, (584), 0 states have call successors, (0), 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 371 [2022-11-02 21:10:31,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:31,718 INFO L225 Difference]: With dead ends: 43408 [2022-11-02 21:10:31,718 INFO L226 Difference]: Without dead ends: 32476 [2022-11-02 21:10:31,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 754 GetRequests, 728 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=202, Invalid=554, Unknown=0, NotChecked=0, Total=756 [2022-11-02 21:10:31,727 INFO L413 NwaCegarLoop]: 780 mSDtfsCounter, 2395 mSDsluCounter, 3684 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2395 SdHoareTripleChecker+Valid, 4464 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 206 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:31,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2395 Valid, 4464 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 212 Invalid, 0 Unknown, 206 Unchecked, 0.3s Time] [2022-11-02 21:10:31,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32476 states. [2022-11-02 21:10:32,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32476 to 13022. [2022-11-02 21:10:32,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13022 states, 13021 states have (on average 1.4207050149758083) internal successors, (18499), 13021 states have internal predecessors, (18499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:32,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13022 states to 13022 states and 18499 transitions. [2022-11-02 21:10:32,473 INFO L78 Accepts]: Start accepts. Automaton has 13022 states and 18499 transitions. Word has length 371 [2022-11-02 21:10:32,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:32,473 INFO L495 AbstractCegarLoop]: Abstraction has 13022 states and 18499 transitions. [2022-11-02 21:10:32,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 41.714285714285715) internal successors, (584), 14 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:32,473 INFO L276 IsEmpty]: Start isEmpty. Operand 13022 states and 18499 transitions. [2022-11-02 21:10:32,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2022-11-02 21:10:32,481 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:32,481 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:32,498 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (91)] Ended with exit code 0 [2022-11-02 21:10:32,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 91 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:10:32,682 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:10:32,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:32,682 INFO L85 PathProgramCache]: Analyzing trace with hash -427776197, now seen corresponding path program 1 times [2022-11-02 21:10:32,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:10:32,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1933103251] [2022-11-02 21:10:32,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:32,683 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:10:32,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:10:32,684 INFO L229 MonitoredProcess]: Starting monitored process 92 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:10:32,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (92)] Waiting until timeout for monitored process [2022-11-02 21:10:33,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:33,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 1907 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:10:33,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:10:33,645 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 111 proven. 75 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:10:33,645 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:10:33,751 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 21:10:33,751 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:10:33,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1933103251] [2022-11-02 21:10:33,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1933103251] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 21:10:33,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:10:33,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2022-11-02 21:10:33,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069997739] [2022-11-02 21:10:33,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:10:33,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:10:33,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:10:33,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:10:33,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:10:33,753 INFO L87 Difference]: Start difference. First operand 13022 states and 18499 transitions. Second operand has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:35,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:35,143 INFO L93 Difference]: Finished difference Result 35332 states and 50204 transitions. [2022-11-02 21:10:35,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:10:35,144 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 371 [2022-11-02 21:10:35,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:35,157 INFO L225 Difference]: With dead ends: 35332 [2022-11-02 21:10:35,158 INFO L226 Difference]: Without dead ends: 24280 [2022-11-02 21:10:35,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 744 GetRequests, 736 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:10:35,163 INFO L413 NwaCegarLoop]: 713 mSDtfsCounter, 730 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 1454 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:35,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [730 Valid, 1454 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:10:35,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24280 states. [2022-11-02 21:10:35,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24280 to 13022. [2022-11-02 21:10:35,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13022 states, 13021 states have (on average 1.4202442208739727) internal successors, (18493), 13021 states have internal predecessors, (18493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:35,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13022 states to 13022 states and 18493 transitions. [2022-11-02 21:10:35,821 INFO L78 Accepts]: Start accepts. Automaton has 13022 states and 18493 transitions. Word has length 371 [2022-11-02 21:10:35,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:35,821 INFO L495 AbstractCegarLoop]: Abstraction has 13022 states and 18493 transitions. [2022-11-02 21:10:35,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:35,821 INFO L276 IsEmpty]: Start isEmpty. Operand 13022 states and 18493 transitions. [2022-11-02 21:10:35,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2022-11-02 21:10:35,829 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:35,829 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:35,851 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (92)] Ended with exit code 0 [2022-11-02 21:10:36,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:10:36,029 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:10:36,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:36,030 INFO L85 PathProgramCache]: Analyzing trace with hash -2075139139, now seen corresponding path program 1 times [2022-11-02 21:10:36,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:10:36,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [760042798] [2022-11-02 21:10:36,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:36,031 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:10:36,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:10:36,032 INFO L229 MonitoredProcess]: Starting monitored process 93 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:10:36,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (93)] Waiting until timeout for monitored process [2022-11-02 21:10:36,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:36,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 1907 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-02 21:10:36,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:10:38,208 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 109 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:10:38,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:10:39,616 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 109 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:10:39,616 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:10:39,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [760042798] [2022-11-02 21:10:39,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [760042798] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:10:39,617 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:10:39,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2022-11-02 21:10:39,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338633881] [2022-11-02 21:10:39,617 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:10:39,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 21:10:39,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:10:39,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 21:10:39,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-11-02 21:10:39,619 INFO L87 Difference]: Start difference. First operand 13022 states and 18493 transitions. Second operand has 14 states, 14 states have (on average 41.714285714285715) internal successors, (584), 14 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:42,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:42,031 INFO L93 Difference]: Finished difference Result 43572 states and 62066 transitions. [2022-11-02 21:10:42,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-02 21:10:42,031 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 41.714285714285715) internal successors, (584), 14 states have internal predecessors, (584), 0 states have call successors, (0), 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 371 [2022-11-02 21:10:42,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:42,048 INFO L225 Difference]: With dead ends: 43572 [2022-11-02 21:10:42,048 INFO L226 Difference]: Without dead ends: 32520 [2022-11-02 21:10:42,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 754 GetRequests, 728 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=203, Invalid=553, Unknown=0, NotChecked=0, Total=756 [2022-11-02 21:10:42,052 INFO L413 NwaCegarLoop]: 779 mSDtfsCounter, 2546 mSDsluCounter, 4222 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2546 SdHoareTripleChecker+Valid, 5001 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 159 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:42,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2546 Valid, 5001 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 257 Invalid, 0 Unknown, 159 Unchecked, 0.4s Time] [2022-11-02 21:10:42,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32520 states. [2022-11-02 21:10:42,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32520 to 13102. [2022-11-02 21:10:42,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13102 states, 13101 states have (on average 1.4188993206625449) internal successors, (18589), 13101 states have internal predecessors, (18589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:42,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13102 states to 13102 states and 18589 transitions. [2022-11-02 21:10:42,736 INFO L78 Accepts]: Start accepts. Automaton has 13102 states and 18589 transitions. Word has length 371 [2022-11-02 21:10:42,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:42,736 INFO L495 AbstractCegarLoop]: Abstraction has 13102 states and 18589 transitions. [2022-11-02 21:10:42,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 41.714285714285715) internal successors, (584), 14 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:42,737 INFO L276 IsEmpty]: Start isEmpty. Operand 13102 states and 18589 transitions. [2022-11-02 21:10:42,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2022-11-02 21:10:42,745 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:42,745 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:42,761 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (93)] Ended with exit code 0 [2022-11-02 21:10:42,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 93 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:10:42,946 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:10:42,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:42,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1181243583, now seen corresponding path program 1 times [2022-11-02 21:10:42,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:10:42,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2098938504] [2022-11-02 21:10:42,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:42,947 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:10:42,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:10:42,948 INFO L229 MonitoredProcess]: Starting monitored process 94 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:10:42,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (94)] Waiting until timeout for monitored process [2022-11-02 21:10:43,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:43,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 1907 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:10:43,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:10:43,920 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 107 proven. 79 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:10:43,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:10:44,037 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 21:10:44,037 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:10:44,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2098938504] [2022-11-02 21:10:44,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2098938504] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 21:10:44,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:10:44,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2022-11-02 21:10:44,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175543388] [2022-11-02 21:10:44,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:10:44,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:10:44,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:10:44,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:10:44,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:10:44,039 INFO L87 Difference]: Start difference. First operand 13102 states and 18589 transitions. Second operand has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:45,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:45,464 INFO L93 Difference]: Finished difference Result 35564 states and 50462 transitions. [2022-11-02 21:10:45,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:10:45,465 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 371 [2022-11-02 21:10:45,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:45,479 INFO L225 Difference]: With dead ends: 35564 [2022-11-02 21:10:45,479 INFO L226 Difference]: Without dead ends: 24432 [2022-11-02 21:10:45,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 744 GetRequests, 736 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:10:45,484 INFO L413 NwaCegarLoop]: 716 mSDtfsCounter, 730 mSDsluCounter, 740 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 1456 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:45,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [730 Valid, 1456 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:10:45,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24432 states. [2022-11-02 21:10:46,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24432 to 13102. [2022-11-02 21:10:46,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13102 states, 13101 states have (on average 1.4184413403556981) internal successors, (18583), 13101 states have internal predecessors, (18583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:46,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13102 states to 13102 states and 18583 transitions. [2022-11-02 21:10:46,137 INFO L78 Accepts]: Start accepts. Automaton has 13102 states and 18583 transitions. Word has length 371 [2022-11-02 21:10:46,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:46,137 INFO L495 AbstractCegarLoop]: Abstraction has 13102 states and 18583 transitions. [2022-11-02 21:10:46,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:46,138 INFO L276 IsEmpty]: Start isEmpty. Operand 13102 states and 18583 transitions. [2022-11-02 21:10:46,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2022-11-02 21:10:46,145 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:46,145 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:46,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (94)] Forceful destruction successful, exit code 0 [2022-11-02 21:10:46,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:10:46,346 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:10:46,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:46,346 INFO L85 PathProgramCache]: Analyzing trace with hash -960616895, now seen corresponding path program 1 times [2022-11-02 21:10:46,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:10:46,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2110417754] [2022-11-02 21:10:46,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:46,347 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:10:46,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:10:46,348 INFO L229 MonitoredProcess]: Starting monitored process 95 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:10:46,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (95)] Waiting until timeout for monitored process [2022-11-02 21:10:46,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:46,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 1907 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:10:46,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:10:47,330 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 105 proven. 81 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:10:47,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:10:47,450 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 21:10:47,450 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:10:47,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2110417754] [2022-11-02 21:10:47,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2110417754] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 21:10:47,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:10:47,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2022-11-02 21:10:47,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202187075] [2022-11-02 21:10:47,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:10:47,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:10:47,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:10:47,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:10:47,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:10:47,452 INFO L87 Difference]: Start difference. First operand 13102 states and 18583 transitions. Second operand has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:48,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:48,845 INFO L93 Difference]: Finished difference Result 35560 states and 50438 transitions. [2022-11-02 21:10:48,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:10:48,845 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 371 [2022-11-02 21:10:48,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:48,860 INFO L225 Difference]: With dead ends: 35560 [2022-11-02 21:10:48,860 INFO L226 Difference]: Without dead ends: 24428 [2022-11-02 21:10:48,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 744 GetRequests, 736 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:10:48,866 INFO L413 NwaCegarLoop]: 716 mSDtfsCounter, 727 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 727 SdHoareTripleChecker+Valid, 1457 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:48,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [727 Valid, 1457 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:10:48,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24428 states. [2022-11-02 21:10:49,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24428 to 13102. [2022-11-02 21:10:49,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13102 states, 13101 states have (on average 1.4179833600488512) internal successors, (18577), 13101 states have internal predecessors, (18577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:49,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13102 states to 13102 states and 18577 transitions. [2022-11-02 21:10:49,528 INFO L78 Accepts]: Start accepts. Automaton has 13102 states and 18577 transitions. Word has length 371 [2022-11-02 21:10:49,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:49,528 INFO L495 AbstractCegarLoop]: Abstraction has 13102 states and 18577 transitions. [2022-11-02 21:10:49,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.8) internal successors, (369), 5 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:49,529 INFO L276 IsEmpty]: Start isEmpty. Operand 13102 states and 18577 transitions. [2022-11-02 21:10:49,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2022-11-02 21:10:49,536 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:49,536 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:49,560 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (95)] Ended with exit code 0 [2022-11-02 21:10:49,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:10:49,736 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:10:49,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:49,737 INFO L85 PathProgramCache]: Analyzing trace with hash -842175421, now seen corresponding path program 1 times [2022-11-02 21:10:49,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:10:49,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1452750358] [2022-11-02 21:10:49,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:49,738 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:10:49,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:10:49,739 INFO L229 MonitoredProcess]: Starting monitored process 96 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:10:49,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b003ca92-1bbd-4f85-bcae-a0cac24d03bb/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (96)] Waiting until timeout for monitored process [2022-11-02 21:10:50,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:50,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 1907 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-02 21:10:50,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:10:51,361 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 101 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:10:51,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:10:52,011 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 101 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:10:52,011 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:10:52,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1452750358] [2022-11-02 21:10:52,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1452750358] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:10:52,012 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:10:52,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2022-11-02 21:10:52,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438188456] [2022-11-02 21:10:52,013 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:10:52,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 21:10:52,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:10:52,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 21:10:52,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-11-02 21:10:52,015 INFO L87 Difference]: Start difference. First operand 13102 states and 18577 transitions. Second operand has 14 states, 14 states have (on average 41.714285714285715) internal successors, (584), 14 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:53,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:53,989 INFO L93 Difference]: Finished difference Result 43740 states and 62204 transitions. [2022-11-02 21:10:53,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-02 21:10:53,990 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 41.714285714285715) internal successors, (584), 14 states have internal predecessors, (584), 0 states have call successors, (0), 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 371 [2022-11-02 21:10:53,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:54,010 INFO L225 Difference]: With dead ends: 43740 [2022-11-02 21:10:54,010 INFO L226 Difference]: Without dead ends: 32608 [2022-11-02 21:10:54,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 754 GetRequests, 728 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=211, Invalid=545, Unknown=0, NotChecked=0, Total=756 [2022-11-02 21:10:54,018 INFO L413 NwaCegarLoop]: 826 mSDtfsCounter, 2718 mSDsluCounter, 5204 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2718 SdHoareTripleChecker+Valid, 6030 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:54,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2718 Valid, 6030 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:10:54,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32608 states.