./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.3.prop1-func-interl.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_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.3.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 0879cd163762109d1ca67e19e785f1d915b0491f35724423e419b77b7fd2d6b9 --- 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 [2022-11-03 02:40:57,117 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:40:57,119 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:40:57,158 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:40:57,158 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:40:57,159 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:40:57,161 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:40:57,162 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:40:57,164 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:40:57,165 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:40:57,166 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:40:57,168 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:40:57,168 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:40:57,169 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:40:57,171 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:40:57,172 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:40:57,173 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:40:57,174 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:40:57,175 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:40:57,177 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:40:57,178 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:40:57,180 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:40:57,181 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:40:57,182 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:40:57,185 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:40:57,186 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:40:57,186 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:40:57,187 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:40:57,188 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:40:57,189 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:40:57,189 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:40:57,190 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:40:57,190 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:40:57,191 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:40:57,192 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:40:57,193 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:40:57,194 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:40:57,194 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:40:57,194 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:40:57,195 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:40:57,196 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:40:57,197 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:40:57,227 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:40:57,228 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:40:57,229 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:40:57,229 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:40:57,230 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:40:57,230 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:40:57,230 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:40:57,231 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:40:57,231 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:40:57,231 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:40:57,232 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:40:57,232 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:40:57,233 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:40:57,233 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:40:57,233 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:40:57,233 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:40:57,233 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:40:57,234 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:40:57,234 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:40:57,235 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:40:57,235 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:40:57,235 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:40:57,235 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:40:57,235 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:40:57,236 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:40:57,236 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:40:57,236 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:40:57,237 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:40:57,237 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:40:57,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:40:57,237 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:40:57,238 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:40:57,238 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:40:57,239 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:40:57,239 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:40:57,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:40:57,239 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:40:57,239 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:40:57,241 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_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0879cd163762109d1ca67e19e785f1d915b0491f35724423e419b77b7fd2d6b9 [2022-11-03 02:40:57,548 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:40:57,586 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:40:57,588 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:40:57,589 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:40:57,590 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:40:57,591 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.3.prop1-func-interl.c [2022-11-03 02:40:57,664 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/data/9933827ae/c3d79eb68a034dec84071847b7a9b9c6/FLAG4ee44a146 [2022-11-03 02:40:58,230 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:40:58,230 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.3.prop1-func-interl.c [2022-11-03 02:40:58,246 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/data/9933827ae/c3d79eb68a034dec84071847b7a9b9c6/FLAG4ee44a146 [2022-11-03 02:40:58,489 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/data/9933827ae/c3d79eb68a034dec84071847b7a9b9c6 [2022-11-03 02:40:58,491 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:40:58,493 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:40:58,494 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:40:58,495 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:40:58,498 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:40:58,499 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:40:58" (1/1) ... [2022-11-03 02:40:58,500 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55af14df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:40:58, skipping insertion in model container [2022-11-03 02:40:58,500 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:40:58" (1/1) ... [2022-11-03 02:40:58,508 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:40:58,572 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:40:58,802 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_c41b772e-f2fb-4230-874b-60386023c75e/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.3.prop1-func-interl.c[1014,1027] [2022-11-03 02:40:59,182 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:40:59,186 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:40:59,197 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_c41b772e-f2fb-4230-874b-60386023c75e/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.3.prop1-func-interl.c[1014,1027] [2022-11-03 02:40:59,332 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:40:59,346 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:40:59,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:40:59 WrapperNode [2022-11-03 02:40:59,346 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:40:59,347 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:40:59,347 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:40:59,347 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:40:59,355 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:40:59" (1/1) ... [2022-11-03 02:40:59,420 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:40:59" (1/1) ... [2022-11-03 02:40:59,678 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1784 [2022-11-03 02:40:59,678 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:40:59,679 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:40:59,679 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:40:59,679 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:40:59,689 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:40:59" (1/1) ... [2022-11-03 02:40:59,689 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:40:59" (1/1) ... [2022-11-03 02:40:59,719 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:40:59" (1/1) ... [2022-11-03 02:40:59,720 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:40:59" (1/1) ... [2022-11-03 02:40:59,811 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:40:59" (1/1) ... [2022-11-03 02:40:59,832 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:40:59" (1/1) ... [2022-11-03 02:40:59,862 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:40:59" (1/1) ... [2022-11-03 02:40:59,874 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:40:59" (1/1) ... [2022-11-03 02:40:59,921 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:40:59,925 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:40:59,925 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:40:59,925 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:40:59,926 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:40:59" (1/1) ... [2022-11-03 02:40:59,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:40:59,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:40:59,960 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:40:59,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:41:00,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:41:00,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:41:00,603 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:41:00,605 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:41:30,160 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:41:46,908 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:41:46,909 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 02:41:46,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:41:46 BoogieIcfgContainer [2022-11-03 02:41:46,912 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:41:46,914 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:41:46,914 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:41:46,922 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:41:46,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:40:58" (1/3) ... [2022-11-03 02:41:46,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37378509 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:41:46, skipping insertion in model container [2022-11-03 02:41:46,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:40:59" (2/3) ... [2022-11-03 02:41:46,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37378509 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:41:46, skipping insertion in model container [2022-11-03 02:41:46,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:41:46" (3/3) ... [2022-11-03 02:41:46,925 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.bakery.3.prop1-func-interl.c [2022-11-03 02:41:46,944 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:41:46,944 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:41:46,992 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:41:46,998 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=FINITE_AUTOMATA, 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;@57dc99ad, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:41:46,999 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:41:47,003 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:41:47,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-03 02:41:47,009 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:41:47,010 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-03 02:41:47,011 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:41:47,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:41:47,016 INFO L85 PathProgramCache]: Analyzing trace with hash 12315344, now seen corresponding path program 1 times [2022-11-03 02:41:47,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:41:47,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188123660] [2022-11-03 02:41:47,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:41:47,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:41:47,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 02:41:47,574 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 02:41:47,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 02:41:47,855 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-03 02:41:47,857 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 02:41:47,859 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 02:41:47,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:41:47,867 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-03 02:41:47,871 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 02:41:47,909 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-03 02:41:47,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 02:41:47 BoogieIcfgContainer [2022-11-03 02:41:47,928 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 02:41:47,929 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 02:41:47,929 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 02:41:47,929 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 02:41:47,930 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:41:46" (3/4) ... [2022-11-03 02:41:47,933 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-03 02:41:47,933 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 02:41:47,934 INFO L158 Benchmark]: Toolchain (without parser) took 49441.40ms. Allocated memory was 136.3MB in the beginning and 3.7GB in the end (delta: 3.6GB). Free memory was 96.4MB in the beginning and 2.9GB in the end (delta: -2.8GB). Peak memory consumption was 801.9MB. Max. memory is 16.1GB. [2022-11-03 02:41:47,935 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 94.4MB. Free memory was 65.9MB in the beginning and 65.9MB in the end (delta: 27.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:41:47,936 INFO L158 Benchmark]: CACSL2BoogieTranslator took 852.20ms. Allocated memory is still 136.3MB. Free memory was 96.3MB in the beginning and 65.9MB in the end (delta: 30.4MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2022-11-03 02:41:47,937 INFO L158 Benchmark]: Boogie Procedure Inliner took 330.91ms. Allocated memory is still 136.3MB. Free memory was 65.9MB in the beginning and 79.2MB in the end (delta: -13.3MB). Peak memory consumption was 36.3MB. Max. memory is 16.1GB. [2022-11-03 02:41:47,937 INFO L158 Benchmark]: Boogie Preprocessor took 245.04ms. Allocated memory is still 136.3MB. Free memory was 79.2MB in the beginning and 60.5MB in the end (delta: 18.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-03 02:41:47,938 INFO L158 Benchmark]: RCFGBuilder took 46987.17ms. Allocated memory was 136.3MB in the beginning and 3.7GB in the end (delta: 3.6GB). Free memory was 60.5MB in the beginning and 3.0GB in the end (delta: -2.9GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2022-11-03 02:41:47,939 INFO L158 Benchmark]: TraceAbstraction took 1013.69ms. Allocated memory is still 3.7GB. Free memory was 3.0GB in the beginning and 2.9GB in the end (delta: 78.6MB). Peak memory consumption was 77.6MB. Max. memory is 16.1GB. [2022-11-03 02:41:47,939 INFO L158 Benchmark]: Witness Printer took 4.20ms. Allocated memory is still 3.7GB. Free memory is still 2.9GB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:41:47,943 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 94.4MB. Free memory was 65.9MB in the beginning and 65.9MB in the end (delta: 27.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 852.20ms. Allocated memory is still 136.3MB. Free memory was 96.3MB in the beginning and 65.9MB in the end (delta: 30.4MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 330.91ms. Allocated memory is still 136.3MB. Free memory was 65.9MB in the beginning and 79.2MB in the end (delta: -13.3MB). Peak memory consumption was 36.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 245.04ms. Allocated memory is still 136.3MB. Free memory was 79.2MB in the beginning and 60.5MB in the end (delta: 18.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * RCFGBuilder took 46987.17ms. Allocated memory was 136.3MB in the beginning and 3.7GB in the end (delta: 3.6GB). Free memory was 60.5MB in the beginning and 3.0GB in the end (delta: -2.9GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. * TraceAbstraction took 1013.69ms. Allocated memory is still 3.7GB. Free memory was 3.0GB in the beginning and 2.9GB in the end (delta: 78.6MB). Peak memory consumption was 77.6MB. Max. memory is 16.1GB. * Witness Printer took 4.20ms. Allocated memory is still 3.7GB. Free memory is still 2.9GB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 227, overapproximation of bitwiseAnd at line 162. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L28] const SORT_2 mask_SORT_2 = (SORT_2)-1 >> (sizeof(SORT_2) * 8 - 8); [L29] const SORT_2 msb_SORT_2 = (SORT_2)1 << (8 - 1); [L31] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 24); [L32] const SORT_3 msb_SORT_3 = (SORT_3)1 << (24 - 1); [L34] const SORT_4 mask_SORT_4 = (SORT_4)-1 >> (sizeof(SORT_4) * 8 - 32); [L35] const SORT_4 msb_SORT_4 = (SORT_4)1 << (32 - 1); [L37] const SORT_2 var_5 = 0; [L38] const SORT_1 var_30 = 0; [L39] const SORT_4 var_63 = 1; [L40] const SORT_4 var_64 = 0; [L41] const SORT_2 var_74 = 0; [L42] const SORT_2 var_76 = 1; [L43] const SORT_3 var_91 = 0; [L44] const SORT_4 var_227 = 3; [L45] const SORT_2 var_239 = 3; [L46] const SORT_4 var_241 = 4; [L47] const SORT_4 var_343 = 2; [L49] SORT_1 input_73; [L50] SORT_1 input_75; [L51] SORT_1 input_80; [L52] SORT_1 input_81; [L53] SORT_1 input_85; [L54] SORT_1 input_86; [L55] SORT_1 input_90; [L56] SORT_1 input_98; [L57] SORT_1 input_105; [L58] SORT_1 input_112; [L59] SORT_1 input_116; [L60] SORT_1 input_117; [L61] SORT_1 input_131; [L62] SORT_1 input_135; [L63] SORT_1 input_136; [L64] SORT_1 input_150; [L65] SORT_1 input_154; [L66] SORT_1 input_155; [L67] SORT_1 input_176; [L68] SORT_1 input_179; [L69] SORT_1 input_195; [L70] SORT_1 input_198; [L71] SORT_1 input_214; [L72] SORT_1 input_217; [L74] SORT_2 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L75] SORT_2 state_8 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L76] SORT_2 state_10 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L77] SORT_2 state_12 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L78] SORT_2 state_14 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L79] SORT_2 state_16 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L80] SORT_2 state_18 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L81] SORT_2 state_20 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L82] SORT_2 state_22 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L83] SORT_2 state_24 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L84] SORT_2 state_26 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L85] SORT_2 state_28 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L86] SORT_1 state_31 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L87] SORT_1 state_33 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L88] SORT_1 state_35 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L89] SORT_1 state_37 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L90] SORT_1 state_39 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L91] SORT_1 state_41 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L92] SORT_1 state_43 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L93] SORT_1 state_45 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L94] SORT_1 state_47 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L95] SORT_1 state_49 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L96] SORT_1 state_51 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L97] SORT_1 state_53 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L98] SORT_1 state_55 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L99] SORT_1 state_57 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L100] SORT_1 state_59 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L101] SORT_1 state_61 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L103] SORT_2 init_7_arg_1 = var_5; [L104] state_6 = init_7_arg_1 [L105] SORT_2 init_9_arg_1 = var_5; [L106] state_8 = init_9_arg_1 [L107] SORT_2 init_11_arg_1 = var_5; [L108] state_10 = init_11_arg_1 [L109] SORT_2 init_13_arg_1 = var_5; [L110] state_12 = init_13_arg_1 [L111] SORT_2 init_15_arg_1 = var_5; [L112] state_14 = init_15_arg_1 [L113] SORT_2 init_17_arg_1 = var_5; [L114] state_16 = init_17_arg_1 [L115] SORT_2 init_19_arg_1 = var_5; [L116] state_18 = init_19_arg_1 [L117] SORT_2 init_21_arg_1 = var_5; [L118] state_20 = init_21_arg_1 [L119] SORT_2 init_23_arg_1 = var_5; [L120] state_22 = init_23_arg_1 [L121] SORT_2 init_25_arg_1 = var_5; [L122] state_24 = init_25_arg_1 [L123] SORT_2 init_27_arg_1 = var_5; [L124] state_26 = init_27_arg_1 [L125] SORT_2 init_29_arg_1 = var_5; [L126] state_28 = init_29_arg_1 [L127] SORT_1 init_32_arg_1 = var_30; [L128] state_31 = init_32_arg_1 [L129] SORT_1 init_34_arg_1 = var_30; [L130] state_33 = init_34_arg_1 [L131] SORT_1 init_36_arg_1 = var_30; [L132] state_35 = init_36_arg_1 [L133] SORT_1 init_38_arg_1 = var_30; [L134] state_37 = init_38_arg_1 [L135] SORT_1 init_40_arg_1 = var_30; [L136] state_39 = init_40_arg_1 [L137] SORT_1 init_42_arg_1 = var_30; [L138] state_41 = init_42_arg_1 [L139] SORT_1 init_44_arg_1 = var_30; [L140] state_43 = init_44_arg_1 [L141] SORT_1 init_46_arg_1 = var_30; [L142] state_45 = init_46_arg_1 [L143] SORT_1 init_48_arg_1 = var_30; [L144] state_47 = init_48_arg_1 [L145] SORT_1 init_50_arg_1 = var_30; [L146] state_49 = init_50_arg_1 [L147] SORT_1 init_52_arg_1 = var_30; [L148] state_51 = init_52_arg_1 [L149] SORT_1 init_54_arg_1 = var_30; [L150] state_53 = init_54_arg_1 [L151] SORT_1 init_56_arg_1 = var_30; [L152] state_55 = init_56_arg_1 [L153] SORT_1 init_58_arg_1 = var_30; [L154] state_57 = init_58_arg_1 [L155] SORT_1 init_60_arg_1 = var_30; [L156] state_59 = init_60_arg_1 [L157] SORT_1 init_62_arg_1 = var_30; [L158] state_61 = init_62_arg_1 VAL [init_11_arg_1=0, init_13_arg_1=0, init_15_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_23_arg_1=0, init_25_arg_1=0, init_27_arg_1=0, init_29_arg_1=0, init_32_arg_1=0, init_34_arg_1=0, init_36_arg_1=0, init_38_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_46_arg_1=0, init_48_arg_1=0, init_50_arg_1=0, init_52_arg_1=0, init_54_arg_1=0, init_56_arg_1=0, init_58_arg_1=0, init_60_arg_1=0, init_62_arg_1=0, init_7_arg_1=0, init_9_arg_1=0, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=4294967295, mask_SORT_4=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=8388608, msb_SORT_4=2147483648, state_10=0, state_12=0, state_14=0, state_16=0, state_18=0, state_20=0, state_22=0, state_24=0, state_26=0, state_28=0, state_31=0, state_33=0, state_35=0, state_37=0, state_39=0, state_41=0, state_43=0, state_45=0, state_47=0, state_49=0, state_51=0, state_53=0, state_55=0, state_57=0, state_59=0, state_6=0, state_61=0, state_8=0, var_227=3, var_239=3, var_241=4, var_30=0, var_343=2, var_5=0, var_63=1, var_64=0, var_74=0, var_76=1, var_91=0] [L161] input_73 = __VERIFIER_nondet_uchar() [L162] input_73 = input_73 & mask_SORT_1 [L163] input_75 = __VERIFIER_nondet_uchar() [L164] input_75 = input_75 & mask_SORT_1 [L165] input_80 = __VERIFIER_nondet_uchar() [L166] input_80 = input_80 & mask_SORT_1 [L167] input_81 = __VERIFIER_nondet_uchar() [L168] input_81 = input_81 & mask_SORT_1 [L169] input_85 = __VERIFIER_nondet_uchar() [L170] input_85 = input_85 & mask_SORT_1 [L171] input_86 = __VERIFIER_nondet_uchar() [L172] input_86 = input_86 & mask_SORT_1 [L173] input_90 = __VERIFIER_nondet_uchar() [L174] input_90 = input_90 & mask_SORT_1 [L175] input_98 = __VERIFIER_nondet_uchar() [L176] input_98 = input_98 & mask_SORT_1 [L177] input_105 = __VERIFIER_nondet_uchar() [L178] input_105 = input_105 & mask_SORT_1 [L179] input_112 = __VERIFIER_nondet_uchar() [L180] input_112 = input_112 & mask_SORT_1 [L181] input_116 = __VERIFIER_nondet_uchar() [L182] input_116 = input_116 & mask_SORT_1 [L183] input_117 = __VERIFIER_nondet_uchar() [L184] input_117 = input_117 & mask_SORT_1 [L185] input_131 = __VERIFIER_nondet_uchar() [L186] input_131 = input_131 & mask_SORT_1 [L187] input_135 = __VERIFIER_nondet_uchar() [L188] input_135 = input_135 & mask_SORT_1 [L189] input_136 = __VERIFIER_nondet_uchar() [L190] input_136 = input_136 & mask_SORT_1 [L191] input_150 = __VERIFIER_nondet_uchar() [L192] input_150 = input_150 & mask_SORT_1 [L193] input_154 = __VERIFIER_nondet_uchar() [L194] input_154 = input_154 & mask_SORT_1 [L195] input_155 = __VERIFIER_nondet_uchar() [L196] input_155 = input_155 & mask_SORT_1 [L197] input_176 = __VERIFIER_nondet_uchar() [L198] input_179 = __VERIFIER_nondet_uchar() [L199] input_195 = __VERIFIER_nondet_uchar() [L200] input_198 = __VERIFIER_nondet_uchar() [L201] input_214 = __VERIFIER_nondet_uchar() [L202] input_217 = __VERIFIER_nondet_uchar() [L205] SORT_1 var_65_arg_0 = state_39; [L206] SORT_4 var_65_arg_1 = var_63; [L207] SORT_4 var_65_arg_2 = var_64; [L208] EXPR var_65_arg_0 ? var_65_arg_1 : var_65_arg_2 [L208] SORT_4 var_65 = var_65_arg_0 ? var_65_arg_1 : var_65_arg_2; [L209] SORT_1 var_66_arg_0 = state_49; [L210] SORT_4 var_66_arg_1 = var_63; [L211] SORT_4 var_66_arg_2 = var_64; [L212] EXPR var_66_arg_0 ? var_66_arg_1 : var_66_arg_2 [L212] SORT_4 var_66 = var_66_arg_0 ? var_66_arg_1 : var_66_arg_2; [L213] SORT_4 var_67_arg_0 = var_65; [L214] SORT_4 var_67_arg_1 = var_66; [L215] SORT_4 var_67 = var_67_arg_0 + var_67_arg_1; [L216] SORT_1 var_68_arg_0 = state_59; [L217] SORT_4 var_68_arg_1 = var_63; [L218] SORT_4 var_68_arg_2 = var_64; [L219] EXPR var_68_arg_0 ? var_68_arg_1 : var_68_arg_2 [L219] SORT_4 var_68 = var_68_arg_0 ? var_68_arg_1 : var_68_arg_2; [L220] SORT_4 var_69_arg_0 = var_67; [L221] SORT_4 var_69_arg_1 = var_68; [L222] SORT_4 var_69 = var_69_arg_0 + var_69_arg_1; [L223] var_69 = var_69 & mask_SORT_4 [L224] SORT_4 var_70_arg_0 = var_69; [L225] SORT_4 var_70_arg_1 = var_63; [L226] SORT_1 var_70 = var_70_arg_0 <= var_70_arg_1; [L227] SORT_1 var_71_arg_0 = ~state_61; [L228] var_71_arg_0 = var_71_arg_0 & mask_SORT_1 [L229] SORT_1 var_71_arg_1 = ~var_70; [L230] var_71_arg_1 = var_71_arg_1 & mask_SORT_1 [L231] SORT_1 var_71 = var_71_arg_0 & var_71_arg_1; [L232] var_71 = var_71 & mask_SORT_1 [L233] SORT_1 bad_72_arg_0 = var_71; [L234] CALL __VERIFIER_assert(!(bad_72_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, 7 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=7occurred 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, 4 NumberOfCodeBlocks, 4 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 [2022-11-03 02:41:47,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.3.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 0879cd163762109d1ca67e19e785f1d915b0491f35724423e419b77b7fd2d6b9 --- 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 [2022-11-03 02:41:50,519 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:41:50,522 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:41:50,568 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:41:50,568 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:41:50,572 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:41:50,574 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:41:50,578 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:41:50,584 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:41:50,592 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:41:50,593 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:41:50,595 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:41:50,596 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:41:50,598 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:41:50,600 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:41:50,601 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:41:50,603 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:41:50,604 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:41:50,633 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:41:50,641 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:41:50,643 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:41:50,644 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:41:50,648 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:41:50,649 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:41:50,657 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:41:50,658 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:41:50,658 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:41:50,660 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:41:50,661 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:41:50,662 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:41:50,662 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:41:50,663 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:41:50,665 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:41:50,666 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:41:50,667 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:41:50,668 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:41:50,669 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:41:50,669 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:41:50,669 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:41:50,671 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:41:50,672 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:41:50,678 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-03 02:41:50,706 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:41:50,706 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:41:50,708 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:41:50,708 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:41:50,709 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:41:50,709 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:41:50,709 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:41:50,709 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:41:50,710 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:41:50,710 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:41:50,711 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:41:50,711 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:41:50,713 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:41:50,713 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:41:50,713 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:41:50,713 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:41:50,714 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:41:50,714 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-03 02:41:50,714 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-03 02:41:50,714 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-03 02:41:50,714 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:41:50,715 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:41:50,715 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:41:50,715 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:41:50,715 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-03 02:41:50,715 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:41:50,716 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:41:50,716 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:41:50,716 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:41:50,716 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:41:50,717 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-03 02:41:50,717 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-03 02:41:50,717 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:41:50,718 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:41:50,718 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-03 02:41:50,718 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_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0879cd163762109d1ca67e19e785f1d915b0491f35724423e419b77b7fd2d6b9 [2022-11-03 02:41:51,091 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:41:51,120 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:41:51,124 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:41:51,125 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:41:51,126 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:41:51,127 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.3.prop1-func-interl.c [2022-11-03 02:41:51,206 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/data/934f7b610/7a6d7e280785491fad481cc050f574e2/FLAGe28f80c0f [2022-11-03 02:41:51,839 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:41:51,839 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.3.prop1-func-interl.c [2022-11-03 02:41:51,855 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/data/934f7b610/7a6d7e280785491fad481cc050f574e2/FLAGe28f80c0f [2022-11-03 02:41:52,079 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/data/934f7b610/7a6d7e280785491fad481cc050f574e2 [2022-11-03 02:41:52,083 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:41:52,084 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:41:52,086 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:41:52,086 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:41:52,094 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:41:52,095 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:41:52" (1/1) ... [2022-11-03 02:41:52,096 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56bc21e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:41:52, skipping insertion in model container [2022-11-03 02:41:52,096 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:41:52" (1/1) ... [2022-11-03 02:41:52,104 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:41:52,163 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:41:52,319 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_c41b772e-f2fb-4230-874b-60386023c75e/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.3.prop1-func-interl.c[1014,1027] [2022-11-03 02:41:52,718 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:41:52,722 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:41:52,732 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_c41b772e-f2fb-4230-874b-60386023c75e/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.bakery.3.prop1-func-interl.c[1014,1027] [2022-11-03 02:41:52,859 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:41:52,870 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:41:52,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:41:52 WrapperNode [2022-11-03 02:41:52,871 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:41:52,872 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:41:52,872 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:41:52,873 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:41:52,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:41:52" (1/1) ... [2022-11-03 02:41:52,909 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:41:52" (1/1) ... [2022-11-03 02:41:53,023 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1784 [2022-11-03 02:41:53,023 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:41:53,024 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:41:53,024 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:41:53,024 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:41:53,034 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:41:52" (1/1) ... [2022-11-03 02:41:53,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:41:52" (1/1) ... [2022-11-03 02:41:53,043 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:41:52" (1/1) ... [2022-11-03 02:41:53,044 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:41:52" (1/1) ... [2022-11-03 02:41:53,097 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:41:52" (1/1) ... [2022-11-03 02:41:53,105 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:41:52" (1/1) ... [2022-11-03 02:41:53,112 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:41:52" (1/1) ... [2022-11-03 02:41:53,118 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:41:52" (1/1) ... [2022-11-03 02:41:53,135 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:41:53,136 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:41:53,136 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:41:53,136 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:41:53,137 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:41:52" (1/1) ... [2022-11-03 02:41:53,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:41:53,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:41:53,196 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:41:53,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:41:53,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:41:53,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:41:53,729 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:41:53,731 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:41:55,227 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:41:55,238 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:41:55,239 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 02:41:55,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:41:55 BoogieIcfgContainer [2022-11-03 02:41:55,242 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:41:55,246 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:41:55,246 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:41:55,249 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:41:55,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:41:52" (1/3) ... [2022-11-03 02:41:55,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@500f58f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:41:55, skipping insertion in model container [2022-11-03 02:41:55,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:41:52" (2/3) ... [2022-11-03 02:41:55,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@500f58f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:41:55, skipping insertion in model container [2022-11-03 02:41:55,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:41:55" (3/3) ... [2022-11-03 02:41:55,253 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.bakery.3.prop1-func-interl.c [2022-11-03 02:41:55,278 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:41:55,279 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:41:55,362 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:41:55,370 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=FINITE_AUTOMATA, 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;@3e5a5f85, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:41:55,371 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:41:55,376 INFO L276 IsEmpty]: Start isEmpty. Operand has 107 states, 105 states have (on average 1.4952380952380953) internal successors, (157), 106 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:41:55,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-03 02:41:55,386 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:41:55,386 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:41:55,387 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:41:55,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:41:55,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1473645707, now seen corresponding path program 1 times [2022-11-03 02:41:55,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:41:55,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [908899263] [2022-11-03 02:41:55,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:41:55,412 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:41:55,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:41:55,419 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:41:55,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-03 02:41:55,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:41:55,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 02:41:55,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:41:55,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:41:55,950 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:41:55,950 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:41:55,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [908899263] [2022-11-03 02:41:55,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [908899263] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:41:55,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:41:55,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:41:55,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783055145] [2022-11-03 02:41:55,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:41:55,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:41:55,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:41:55,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:41:55,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:41:55,997 INFO L87 Difference]: Start difference. First operand has 107 states, 105 states have (on average 1.4952380952380953) internal successors, (157), 106 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:41:56,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:41:56,259 INFO L93 Difference]: Finished difference Result 409 states and 611 transitions. [2022-11-03 02:41:56,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:41:56,263 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-03 02:41:56,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:41:56,274 INFO L225 Difference]: With dead ends: 409 [2022-11-03 02:41:56,274 INFO L226 Difference]: Without dead ends: 304 [2022-11-03 02:41:56,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:41:56,280 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 439 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:41:56,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [439 Valid, 583 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:41:56,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-11-03 02:41:56,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 105. [2022-11-03 02:41:56,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 1.4711538461538463) internal successors, (153), 104 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:41:56,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 153 transitions. [2022-11-03 02:41:56,322 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 153 transitions. Word has length 11 [2022-11-03 02:41:56,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:41:56,323 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 153 transitions. [2022-11-03 02:41:56,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:41:56,323 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 153 transitions. [2022-11-03 02:41:56,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-03 02:41:56,324 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:41:56,324 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:41:56,341 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-11-03 02:41:56,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:41:56,536 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:41:56,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:41:56,537 INFO L85 PathProgramCache]: Analyzing trace with hash 2011974963, now seen corresponding path program 1 times [2022-11-03 02:41:56,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:41:56,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1761281580] [2022-11-03 02:41:56,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:41:56,538 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:41:56,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:41:56,539 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:41:56,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-03 02:41:56,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:41:56,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 02:41:56,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:41:56,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:41:56,927 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:41:56,927 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:41:56,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1761281580] [2022-11-03 02:41:56,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1761281580] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:41:56,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:41:56,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:41:56,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463130490] [2022-11-03 02:41:56,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:41:56,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:41:56,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:41:56,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:41:56,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:41:56,931 INFO L87 Difference]: Start difference. First operand 105 states and 153 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:41:57,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:41:57,137 INFO L93 Difference]: Finished difference Result 405 states and 595 transitions. [2022-11-03 02:41:57,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:41:57,140 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-03 02:41:57,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:41:57,141 INFO L225 Difference]: With dead ends: 405 [2022-11-03 02:41:57,141 INFO L226 Difference]: Without dead ends: 304 [2022-11-03 02:41:57,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:41:57,143 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 433 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:41:57,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [433 Valid, 582 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:41:57,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-11-03 02:41:57,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 107. [2022-11-03 02:41:57,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 1.4622641509433962) internal successors, (155), 106 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:41:57,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 155 transitions. [2022-11-03 02:41:57,156 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 155 transitions. Word has length 11 [2022-11-03 02:41:57,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:41:57,157 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 155 transitions. [2022-11-03 02:41:57,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:41:57,157 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 155 transitions. [2022-11-03 02:41:57,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-03 02:41:57,157 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:41:57,158 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:41:57,177 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:41:57,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:41:57,372 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:41:57,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:41:57,378 INFO L85 PathProgramCache]: Analyzing trace with hash 2069233265, now seen corresponding path program 1 times [2022-11-03 02:41:57,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:41:57,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [642353586] [2022-11-03 02:41:57,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:41:57,379 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:41:57,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:41:57,381 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:41:57,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-03 02:41:57,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:41:57,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 02:41:57,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:41:57,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:41:57,772 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:41:57,772 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:41:57,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [642353586] [2022-11-03 02:41:57,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [642353586] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:41:57,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:41:57,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:41:57,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203135939] [2022-11-03 02:41:57,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:41:57,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:41:57,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:41:57,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:41:57,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:41:57,779 INFO L87 Difference]: Start difference. First operand 107 states and 155 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:41:57,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:41:57,940 INFO L93 Difference]: Finished difference Result 405 states and 594 transitions. [2022-11-03 02:41:57,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:41:57,943 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-03 02:41:57,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:41:57,944 INFO L225 Difference]: With dead ends: 405 [2022-11-03 02:41:57,945 INFO L226 Difference]: Without dead ends: 304 [2022-11-03 02:41:57,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:41:57,946 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 427 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 584 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:41:57,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [427 Valid, 584 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:41:57,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-11-03 02:41:57,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 109. [2022-11-03 02:41:57,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.4537037037037037) internal successors, (157), 108 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:41:57,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 157 transitions. [2022-11-03 02:41:57,961 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 157 transitions. Word has length 11 [2022-11-03 02:41:57,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:41:57,962 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 157 transitions. [2022-11-03 02:41:57,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:41:57,962 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 157 transitions. [2022-11-03 02:41:57,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-03 02:41:57,963 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:41:57,963 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:41:57,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-03 02:41:58,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:41:58,164 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:41:58,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:41:58,164 INFO L85 PathProgramCache]: Analyzing trace with hash 2069292847, now seen corresponding path program 1 times [2022-11-03 02:41:58,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:41:58,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1291974231] [2022-11-03 02:41:58,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:41:58,165 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:41:58,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:41:58,166 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:41:58,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-03 02:41:58,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:41:58,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-03 02:41:58,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:41:58,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:41:58,852 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:41:58,852 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:41:58,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1291974231] [2022-11-03 02:41:58,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1291974231] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:41:58,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:41:58,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-03 02:41:58,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118986926] [2022-11-03 02:41:58,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:41:58,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-03 02:41:58,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:41:58,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-03 02:41:58,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:41:58,860 INFO L87 Difference]: Start difference. First operand 109 states and 157 transitions. Second operand has 10 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:41:59,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:41:59,979 INFO L93 Difference]: Finished difference Result 429 states and 625 transitions. [2022-11-03 02:41:59,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-03 02:41:59,980 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-03 02:41:59,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:41:59,982 INFO L225 Difference]: With dead ends: 429 [2022-11-03 02:41:59,982 INFO L226 Difference]: Without dead ends: 427 [2022-11-03 02:41:59,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=177, Invalid=473, Unknown=0, NotChecked=0, Total=650 [2022-11-03 02:41:59,983 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 1014 mSDsluCounter, 1265 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1014 SdHoareTripleChecker+Valid, 1414 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:41:59,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1014 Valid, 1414 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 02:41:59,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2022-11-03 02:41:59,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 115. [2022-11-03 02:41:59,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.4473684210526316) internal successors, (165), 114 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:42:00,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 165 transitions. [2022-11-03 02:42:00,015 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 165 transitions. Word has length 11 [2022-11-03 02:42:00,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:42:00,016 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 165 transitions. [2022-11-03 02:42:00,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:42:00,016 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 165 transitions. [2022-11-03 02:42:00,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-03 02:42:00,019 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:42:00,020 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:42:00,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-03 02:42:00,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:42:00,232 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:42:00,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:42:00,233 INFO L85 PathProgramCache]: Analyzing trace with hash 877884095, now seen corresponding path program 1 times [2022-11-03 02:42:00,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:42:00,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [203806516] [2022-11-03 02:42:00,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:42:00,237 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:42:00,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:42:00,238 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:42:00,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-03 02:42:01,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:42:01,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 1499 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:42:01,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:42:01,230 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:42:01,230 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:42:01,231 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:42:01,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [203806516] [2022-11-03 02:42:01,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [203806516] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:42:01,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:42:01,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:42:01,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700160299] [2022-11-03 02:42:01,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:42:01,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:42:01,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:42:01,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:42:01,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:42:01,241 INFO L87 Difference]: Start difference. First operand 115 states and 165 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:42:01,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:42:01,541 INFO L93 Difference]: Finished difference Result 422 states and 616 transitions. [2022-11-03 02:42:01,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:42:01,542 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2022-11-03 02:42:01,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:42:01,543 INFO L225 Difference]: With dead ends: 422 [2022-11-03 02:42:01,544 INFO L226 Difference]: Without dead ends: 315 [2022-11-03 02:42:01,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:42:01,545 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 379 mSDsluCounter, 1018 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 1197 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 42 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:42:01,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 1197 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 42 Unchecked, 0.2s Time] [2022-11-03 02:42:01,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2022-11-03 02:42:01,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 139. [2022-11-03 02:42:01,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 138 states have (on average 1.4420289855072463) internal successors, (199), 138 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:42:01,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 199 transitions. [2022-11-03 02:42:01,553 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 199 transitions. Word has length 110 [2022-11-03 02:42:01,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:42:01,553 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 199 transitions. [2022-11-03 02:42:01,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:42:01,553 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 199 transitions. [2022-11-03 02:42:01,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-03 02:42:01,556 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:42:01,557 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:42:01,584 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-03 02:42:01,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:42:01,769 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:42:01,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:42:01,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1118123841, now seen corresponding path program 1 times [2022-11-03 02:42:01,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:42:01,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [871183886] [2022-11-03 02:42:01,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:42:01,773 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:42:01,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:42:01,775 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:42:01,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-03 02:42:02,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:42:02,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 1499 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:42:02,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:42:02,838 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:42:02,838 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:42:02,839 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:42:02,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [871183886] [2022-11-03 02:42:02,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [871183886] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:42:02,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:42:02,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:42:02,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376900145] [2022-11-03 02:42:02,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:42:02,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:42:02,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:42:02,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:42:02,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:42:02,843 INFO L87 Difference]: Start difference. First operand 139 states and 199 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:42:03,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:42:03,016 INFO L93 Difference]: Finished difference Result 431 states and 629 transitions. [2022-11-03 02:42:03,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:42:03,019 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2022-11-03 02:42:03,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:42:03,021 INFO L225 Difference]: With dead ends: 431 [2022-11-03 02:42:03,021 INFO L226 Difference]: Without dead ends: 324 [2022-11-03 02:42:03,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:42:03,022 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 329 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:42:03,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 564 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:42:03,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2022-11-03 02:42:03,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 163. [2022-11-03 02:42:03,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.4444444444444444) internal successors, (234), 162 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:42:03,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 234 transitions. [2022-11-03 02:42:03,038 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 234 transitions. Word has length 110 [2022-11-03 02:42:03,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:42:03,038 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 234 transitions. [2022-11-03 02:42:03,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:42:03,039 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 234 transitions. [2022-11-03 02:42:03,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-03 02:42:03,043 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:42:03,043 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:42:03,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-03 02:42:03,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:42:03,265 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:42:03,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:42:03,266 INFO L85 PathProgramCache]: Analyzing trace with hash -568055997, now seen corresponding path program 1 times [2022-11-03 02:42:03,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:42:03,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [306064949] [2022-11-03 02:42:03,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:42:03,269 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:42:03,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:42:03,270 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:42:03,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-03 02:42:03,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:42:04,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 1499 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:42:04,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:42:04,445 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:42:04,445 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:42:04,446 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:42:04,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [306064949] [2022-11-03 02:42:04,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [306064949] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:42:04,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:42:04,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:42:04,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542838468] [2022-11-03 02:42:04,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:42:04,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:42:04,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:42:04,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:42:04,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:42:04,448 INFO L87 Difference]: Start difference. First operand 163 states and 234 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:42:04,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:42:04,581 INFO L93 Difference]: Finished difference Result 318 states and 461 transitions. [2022-11-03 02:42:04,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:42:04,585 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2022-11-03 02:42:04,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:42:04,586 INFO L225 Difference]: With dead ends: 318 [2022-11-03 02:42:04,586 INFO L226 Difference]: Without dead ends: 211 [2022-11-03 02:42:04,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:42:04,588 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 78 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 715 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 22 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:42:04,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 715 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 22 Unchecked, 0.1s Time] [2022-11-03 02:42:04,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2022-11-03 02:42:04,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2022-11-03 02:42:04,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 210 states have (on average 1.4428571428571428) internal successors, (303), 210 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:42:04,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 303 transitions. [2022-11-03 02:42:04,595 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 303 transitions. Word has length 110 [2022-11-03 02:42:04,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:42:04,595 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 303 transitions. [2022-11-03 02:42:04,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:42:04,596 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 303 transitions. [2022-11-03 02:42:04,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-03 02:42:04,597 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:42:04,598 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:42:04,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-03 02:42:04,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:42:04,819 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:42:04,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:42:04,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1828973247, now seen corresponding path program 1 times [2022-11-03 02:42:04,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:42:04,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2116856479] [2022-11-03 02:42:04,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:42:04,821 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:42:04,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:42:04,827 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:42:04,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-03 02:42:05,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:42:05,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 1499 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:42:05,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:42:05,907 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:42:05,907 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:42:05,908 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:42:05,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2116856479] [2022-11-03 02:42:05,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2116856479] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:42:05,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:42:05,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:42:05,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761220532] [2022-11-03 02:42:05,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:42:05,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:42:05,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:42:05,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:42:05,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:42:05,910 INFO L87 Difference]: Start difference. First operand 211 states and 303 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:42:06,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:42:06,063 INFO L93 Difference]: Finished difference Result 479 states and 697 transitions. [2022-11-03 02:42:06,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:42:06,065 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2022-11-03 02:42:06,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:42:06,067 INFO L225 Difference]: With dead ends: 479 [2022-11-03 02:42:06,067 INFO L226 Difference]: Without dead ends: 372 [2022-11-03 02:42:06,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:42:06,068 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 283 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 563 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 [2022-11-03 02:42:06,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 563 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:42:06,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2022-11-03 02:42:06,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 229. [2022-11-03 02:42:06,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 228 states have (on average 1.4429824561403508) internal successors, (329), 228 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:42:06,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 329 transitions. [2022-11-03 02:42:06,076 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 329 transitions. Word has length 110 [2022-11-03 02:42:06,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:42:06,076 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 329 transitions. [2022-11-03 02:42:06,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:42:06,077 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 329 transitions. [2022-11-03 02:42:06,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-03 02:42:06,078 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:42:06,078 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:42:06,106 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-03 02:42:06,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:42:06,295 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:42:06,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:42:06,295 INFO L85 PathProgramCache]: Analyzing trace with hash 2112905667, now seen corresponding path program 1 times [2022-11-03 02:42:06,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:42:06,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1079620984] [2022-11-03 02:42:06,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:42:06,297 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:42:06,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:42:06,297 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:42:06,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-03 02:42:07,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:42:07,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 1499 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:42:07,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:42:07,436 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:42:07,436 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:42:07,436 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:42:07,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1079620984] [2022-11-03 02:42:07,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1079620984] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:42:07,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:42:07,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:42:07,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553354209] [2022-11-03 02:42:07,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:42:07,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:42:07,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:42:07,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:42:07,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:42:07,439 INFO L87 Difference]: Start difference. First operand 229 states and 329 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:42:07,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:42:07,577 INFO L93 Difference]: Finished difference Result 442 states and 639 transitions. [2022-11-03 02:42:07,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:42:07,583 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2022-11-03 02:42:07,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:42:07,584 INFO L225 Difference]: With dead ends: 442 [2022-11-03 02:42:07,584 INFO L226 Difference]: Without dead ends: 335 [2022-11-03 02:42:07,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:42:07,585 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 83 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 795 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 23 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:42:07,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 795 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 23 Unchecked, 0.1s Time] [2022-11-03 02:42:07,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2022-11-03 02:42:07,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 335. [2022-11-03 02:42:07,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 334 states have (on average 1.4401197604790419) internal successors, (481), 334 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:42:07,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 481 transitions. [2022-11-03 02:42:07,594 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 481 transitions. Word has length 110 [2022-11-03 02:42:07,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:42:07,595 INFO L495 AbstractCegarLoop]: Abstraction has 335 states and 481 transitions. [2022-11-03 02:42:07,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:42:07,595 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 481 transitions. [2022-11-03 02:42:07,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-03 02:42:07,596 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:42:07,597 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:42:07,623 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-11-03 02:42:07,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:42:07,817 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:42:07,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:42:07,817 INFO L85 PathProgramCache]: Analyzing trace with hash -336694463, now seen corresponding path program 1 times [2022-11-03 02:42:07,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:42:07,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2066385738] [2022-11-03 02:42:07,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:42:07,819 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:42:07,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:42:07,820 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:42:07,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-03 02:42:08,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:42:08,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 1499 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:42:08,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:42:08,764 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:42:08,764 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:42:08,765 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:42:08,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2066385738] [2022-11-03 02:42:08,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2066385738] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:42:08,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:42:08,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:42:08,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701799046] [2022-11-03 02:42:08,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:42:08,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:42:08,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:42:08,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:42:08,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:42:08,767 INFO L87 Difference]: Start difference. First operand 335 states and 481 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:42:09,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:42:09,022 INFO L93 Difference]: Finished difference Result 702 states and 1014 transitions. [2022-11-03 02:42:09,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:42:09,023 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2022-11-03 02:42:09,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:42:09,025 INFO L225 Difference]: With dead ends: 702 [2022-11-03 02:42:09,025 INFO L226 Difference]: Without dead ends: 595 [2022-11-03 02:42:09,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:42:09,026 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 306 mSDsluCounter, 1144 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 1390 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 24 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:42:09,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 1390 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 24 Unchecked, 0.2s Time] [2022-11-03 02:42:09,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2022-11-03 02:42:09,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 465. [2022-11-03 02:42:09,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 464 states have (on average 1.4353448275862069) internal successors, (666), 464 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:42:09,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 666 transitions. [2022-11-03 02:42:09,040 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 666 transitions. Word has length 110 [2022-11-03 02:42:09,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:42:09,040 INFO L495 AbstractCegarLoop]: Abstraction has 465 states and 666 transitions. [2022-11-03 02:42:09,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:42:09,041 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 666 transitions. [2022-11-03 02:42:09,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-03 02:42:09,043 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:42:09,043 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:42:09,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-03 02:42:09,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:42:09,251 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:42:09,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:42:09,251 INFO L85 PathProgramCache]: Analyzing trace with hash -409081021, now seen corresponding path program 1 times [2022-11-03 02:42:09,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:42:09,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [667347903] [2022-11-03 02:42:09,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:42:09,252 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:42:09,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:42:09,254 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:42:09,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-03 02:42:09,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:42:09,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 1499 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:42:09,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:42:10,381 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:42:10,381 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:42:10,382 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:42:10,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [667347903] [2022-11-03 02:42:10,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [667347903] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:42:10,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:42:10,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:42:10,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108248872] [2022-11-03 02:42:10,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:42:10,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:42:10,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:42:10,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:42:10,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:42:10,385 INFO L87 Difference]: Start difference. First operand 465 states and 666 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:42:10,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:42:10,527 INFO L93 Difference]: Finished difference Result 715 states and 1033 transitions. [2022-11-03 02:42:10,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:42:10,530 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2022-11-03 02:42:10,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:42:10,532 INFO L225 Difference]: With dead ends: 715 [2022-11-03 02:42:10,532 INFO L226 Difference]: Without dead ends: 608 [2022-11-03 02:42:10,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:42:10,533 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 237 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 562 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 [2022-11-03 02:42:10,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 562 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:42:10,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2022-11-03 02:42:10,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 483. [2022-11-03 02:42:10,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 482 states have (on average 1.4356846473029046) internal successors, (692), 482 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:42:10,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 692 transitions. [2022-11-03 02:42:10,547 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 692 transitions. Word has length 110 [2022-11-03 02:42:10,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:42:10,547 INFO L495 AbstractCegarLoop]: Abstraction has 483 states and 692 transitions. [2022-11-03 02:42:10,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:42:10,548 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 692 transitions. [2022-11-03 02:42:10,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-03 02:42:10,549 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:42:10,550 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:42:10,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-03 02:42:10,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:42:10,763 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:42:10,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:42:10,763 INFO L85 PathProgramCache]: Analyzing trace with hash 977122373, now seen corresponding path program 1 times [2022-11-03 02:42:10,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:42:10,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1473565575] [2022-11-03 02:42:10,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:42:10,764 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:42:10,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:42:10,765 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:42:10,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-03 02:42:11,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:42:11,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 1499 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:42:11,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:42:11,879 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:42:11,879 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:42:11,880 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:42:11,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1473565575] [2022-11-03 02:42:11,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1473565575] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:42:11,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:42:11,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:42:11,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136343711] [2022-11-03 02:42:11,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:42:11,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:42:11,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:42:11,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:42:11,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:42:11,882 INFO L87 Difference]: Start difference. First operand 483 states and 692 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:42:12,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:42:12,015 INFO L93 Difference]: Finished difference Result 610 states and 877 transitions. [2022-11-03 02:42:12,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:42:12,018 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2022-11-03 02:42:12,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:42:12,019 INFO L225 Difference]: With dead ends: 610 [2022-11-03 02:42:12,020 INFO L226 Difference]: Without dead ends: 503 [2022-11-03 02:42:12,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:42:12,021 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 129 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 718 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 21 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:42:12,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 718 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 21 Unchecked, 0.1s Time] [2022-11-03 02:42:12,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2022-11-03 02:42:12,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 503. [2022-11-03 02:42:12,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 503 states, 502 states have (on average 1.4322709163346614) internal successors, (719), 502 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:42:12,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 719 transitions. [2022-11-03 02:42:12,034 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 719 transitions. Word has length 110 [2022-11-03 02:42:12,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:42:12,036 INFO L495 AbstractCegarLoop]: Abstraction has 503 states and 719 transitions. [2022-11-03 02:42:12,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:42:12,036 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 719 transitions. [2022-11-03 02:42:12,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-03 02:42:12,038 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:42:12,038 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:42:12,065 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-03 02:42:12,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:42:12,260 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:42:12,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:42:12,261 INFO L85 PathProgramCache]: Analyzing trace with hash 836573763, now seen corresponding path program 1 times [2022-11-03 02:42:12,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:42:12,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [980634500] [2022-11-03 02:42:12,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:42:12,262 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:42:12,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:42:12,263 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:42:12,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-03 02:42:12,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:42:12,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 1499 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:42:12,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:42:13,242 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:42:13,243 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:42:13,243 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:42:13,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [980634500] [2022-11-03 02:42:13,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [980634500] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:42:13,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:42:13,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:42:13,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271065709] [2022-11-03 02:42:13,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:42:13,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:42:13,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:42:13,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:42:13,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:42:13,246 INFO L87 Difference]: Start difference. First operand 503 states and 719 transitions. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:42:13,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:42:13,459 INFO L93 Difference]: Finished difference Result 786 states and 1132 transitions. [2022-11-03 02:42:13,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:42:13,460 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2022-11-03 02:42:13,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:42:13,463 INFO L225 Difference]: With dead ends: 786 [2022-11-03 02:42:13,463 INFO L226 Difference]: Without dead ends: 679 [2022-11-03 02:42:13,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:42:13,464 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 426 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 785 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:42:13,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 785 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:42:13,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2022-11-03 02:42:13,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 511. [2022-11-03 02:42:13,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 511 states, 510 states have (on average 1.4313725490196079) internal successors, (730), 510 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:42:13,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 730 transitions. [2022-11-03 02:42:13,478 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 730 transitions. Word has length 110 [2022-11-03 02:42:13,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:42:13,478 INFO L495 AbstractCegarLoop]: Abstraction has 511 states and 730 transitions. [2022-11-03 02:42:13,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:42:13,479 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 730 transitions. [2022-11-03 02:42:13,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-03 02:42:13,480 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:42:13,480 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:42:13,507 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2022-11-03 02:42:13,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:42:13,695 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:42:13,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:42:13,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1259275589, now seen corresponding path program 1 times [2022-11-03 02:42:13,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:42:13,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [368192769] [2022-11-03 02:42:13,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:42:13,696 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:42:13,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:42:13,697 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:42:13,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-03 02:42:14,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:42:14,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 1499 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:42:14,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:42:14,690 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:42:14,691 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:42:14,691 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:42:14,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [368192769] [2022-11-03 02:42:14,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [368192769] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:42:14,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:42:14,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:42:14,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226054305] [2022-11-03 02:42:14,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:42:14,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:42:14,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:42:14,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:42:14,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:42:14,693 INFO L87 Difference]: Start difference. First operand 511 states and 730 transitions. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:42:14,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:42:14,897 INFO L93 Difference]: Finished difference Result 804 states and 1158 transitions. [2022-11-03 02:42:14,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:42:14,898 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2022-11-03 02:42:14,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:42:14,901 INFO L225 Difference]: With dead ends: 804 [2022-11-03 02:42:14,901 INFO L226 Difference]: Without dead ends: 697 [2022-11-03 02:42:14,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:42:14,902 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 442 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 804 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:42:14,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [442 Valid, 804 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:42:14,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2022-11-03 02:42:14,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 515. [2022-11-03 02:42:14,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 514 states have (on average 1.4299610894941635) internal successors, (735), 514 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:42:14,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 735 transitions. [2022-11-03 02:42:14,915 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 735 transitions. Word has length 110 [2022-11-03 02:42:14,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:42:14,915 INFO L495 AbstractCegarLoop]: Abstraction has 515 states and 735 transitions. [2022-11-03 02:42:14,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:42:14,916 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 735 transitions. [2022-11-03 02:42:14,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-03 02:42:14,917 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:42:14,917 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:42:14,945 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-03 02:42:15,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:42:15,131 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:42:15,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:42:15,131 INFO L85 PathProgramCache]: Analyzing trace with hash -329072313, now seen corresponding path program 1 times [2022-11-03 02:42:15,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:42:15,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [404404935] [2022-11-03 02:42:15,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:42:15,133 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:42:15,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:42:15,134 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:42:15,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-03 02:42:15,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:42:15,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 1499 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:42:15,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:42:16,236 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:42:16,236 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:42:16,236 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:42:16,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [404404935] [2022-11-03 02:42:16,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [404404935] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:42:16,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:42:16,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:42:16,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34250663] [2022-11-03 02:42:16,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:42:16,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:42:16,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:42:16,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:42:16,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:42:16,238 INFO L87 Difference]: Start difference. First operand 515 states and 735 transitions. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:42:16,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:42:16,429 INFO L93 Difference]: Finished difference Result 822 states and 1184 transitions. [2022-11-03 02:42:16,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:42:16,430 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2022-11-03 02:42:16,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:42:16,433 INFO L225 Difference]: With dead ends: 822 [2022-11-03 02:42:16,433 INFO L226 Difference]: Without dead ends: 715 [2022-11-03 02:42:16,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:42:16,434 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 458 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 458 SdHoareTripleChecker+Valid, 823 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:42:16,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [458 Valid, 823 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:42:16,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2022-11-03 02:42:16,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 519. [2022-11-03 02:42:16,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 518 states have (on average 1.4285714285714286) internal successors, (740), 518 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:42:16,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 740 transitions. [2022-11-03 02:42:16,448 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 740 transitions. Word has length 110 [2022-11-03 02:42:16,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:42:16,449 INFO L495 AbstractCegarLoop]: Abstraction has 519 states and 740 transitions. [2022-11-03 02:42:16,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:42:16,449 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 740 transitions. [2022-11-03 02:42:16,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-03 02:42:16,450 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:42:16,451 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:42:16,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-03 02:42:16,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:42:16,667 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:42:16,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:42:16,667 INFO L85 PathProgramCache]: Analyzing trace with hash -915878327, now seen corresponding path program 1 times [2022-11-03 02:42:16,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:42:16,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1412851492] [2022-11-03 02:42:16,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:42:16,668 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:42:16,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:42:16,669 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:42:16,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-03 02:42:17,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:42:17,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 1499 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-03 02:42:17,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:42:18,240 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:42:18,240 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:42:18,897 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:42:18,898 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:42:18,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1412851492] [2022-11-03 02:42:18,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1412851492] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:42:18,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [770738032] [2022-11-03 02:42:18,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:42:18,899 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:42:18,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:42:18,906 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:42:18,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2022-11-03 02:42:20,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:42:20,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 1499 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-03 02:42:20,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:42:20,797 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:42:20,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:42:21,225 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:42:21,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [770738032] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:42:21,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987306919] [2022-11-03 02:42:21,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:42:21,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:42:21,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:42:21,228 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:42:21,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-03 02:42:21,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:42:21,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 1499 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-03 02:42:21,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:42:22,848 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:42:22,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:42:23,536 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:42:23,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987306919] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:42:23,536 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:42:23,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 9, 9] total 28 [2022-11-03 02:42:23,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461825157] [2022-11-03 02:42:23,537 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:42:23,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-03 02:42:23,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:42:23,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-03 02:42:23,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=658, Unknown=0, NotChecked=0, Total=756 [2022-11-03 02:42:23,539 INFO L87 Difference]: Start difference. First operand 519 states and 740 transitions. Second operand has 28 states, 28 states have (on average 14.964285714285714) internal successors, (419), 28 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:42:24,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:42:24,145 INFO L93 Difference]: Finished difference Result 982 states and 1400 transitions. [2022-11-03 02:42:24,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-03 02:42:24,146 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 14.964285714285714) internal successors, (419), 28 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2022-11-03 02:42:24,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:42:24,149 INFO L225 Difference]: With dead ends: 982 [2022-11-03 02:42:24,149 INFO L226 Difference]: Without dead ends: 875 [2022-11-03 02:42:24,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 668 GetRequests, 628 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 6 DeprecatedPredicates, 448 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=201, Invalid=1205, Unknown=0, NotChecked=0, Total=1406 [2022-11-03 02:42:24,151 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 664 mSDsluCounter, 2046 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 664 SdHoareTripleChecker+Valid, 2189 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:42:24,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [664 Valid, 2189 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 39 Unchecked, 0.1s Time] [2022-11-03 02:42:24,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2022-11-03 02:42:24,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 872. [2022-11-03 02:42:24,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 872 states, 871 states have (on average 1.4213547646383466) internal successors, (1238), 871 states have internal predecessors, (1238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:42:24,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 1238 transitions. [2022-11-03 02:42:24,175 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 1238 transitions. Word has length 110 [2022-11-03 02:42:24,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:42:24,176 INFO L495 AbstractCegarLoop]: Abstraction has 872 states and 1238 transitions. [2022-11-03 02:42:24,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 14.964285714285714) internal successors, (419), 28 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:42:24,176 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 1238 transitions. [2022-11-03 02:42:24,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-03 02:42:24,179 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:42:24,179 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:42:24,193 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2022-11-03 02:42:24,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-03 02:42:24,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-03 02:42:24,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:42:24,789 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:42:24,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:42:24,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1725224953, now seen corresponding path program 1 times [2022-11-03 02:42:24,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:42:24,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [29803314] [2022-11-03 02:42:24,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:42:24,791 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:42:24,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:42:24,792 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:42:24,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-03 02:42:25,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:42:25,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 1499 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-03 02:42:25,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:42:26,152 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:42:26,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:42:26,701 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:42:26,702 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:42:26,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [29803314] [2022-11-03 02:42:26,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [29803314] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:42:26,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1520163504] [2022-11-03 02:42:26,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:42:26,702 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:42:26,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:42:26,703 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:42:26,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2022-11-03 02:42:27,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:42:27,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 1499 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-03 02:42:27,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:42:28,539 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:42:28,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:42:28,942 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:42:28,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1520163504] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:42:28,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264764751] [2022-11-03 02:42:28,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:42:28,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:42:28,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:42:28,947 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:42:28,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-03 02:42:29,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:42:29,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 1499 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-03 02:42:29,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:42:30,116 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:42:30,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:42:30,529 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:42:30,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264764751] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:42:30,529 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:42:30,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 9, 9] total 16 [2022-11-03 02:42:30,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630095406] [2022-11-03 02:42:30,530 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:42:30,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-03 02:42:30,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:42:30,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-03 02:42:30,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2022-11-03 02:42:30,532 INFO L87 Difference]: Start difference. First operand 872 states and 1238 transitions. Second operand has 16 states, 16 states have (on average 13.4375) internal successors, (215), 16 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:42:30,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:42:30,678 INFO L93 Difference]: Finished difference Result 1393 states and 1982 transitions. [2022-11-03 02:42:30,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:42:30,679 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 13.4375) internal successors, (215), 16 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2022-11-03 02:42:30,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:42:30,681 INFO L225 Difference]: With dead ends: 1393 [2022-11-03 02:42:30,681 INFO L226 Difference]: Without dead ends: 1286 [2022-11-03 02:42:30,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 657 GetRequests, 636 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2022-11-03 02:42:30,682 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 520 mSDsluCounter, 1531 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 520 SdHoareTripleChecker+Valid, 1796 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 40 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:42:30,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [520 Valid, 1796 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 40 Unchecked, 0.1s Time] [2022-11-03 02:42:30,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1286 states. [2022-11-03 02:42:30,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1286 to 1197. [2022-11-03 02:42:30,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1197 states, 1196 states have (on average 1.415551839464883) internal successors, (1693), 1196 states have internal predecessors, (1693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:42:30,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 1693 transitions. [2022-11-03 02:42:30,707 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 1693 transitions. Word has length 110 [2022-11-03 02:42:30,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:42:30,707 INFO L495 AbstractCegarLoop]: Abstraction has 1197 states and 1693 transitions. [2022-11-03 02:42:30,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 13.4375) internal successors, (215), 16 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:42:30,708 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 1693 transitions. [2022-11-03 02:42:30,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-03 02:42:30,710 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:42:30,710 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:42:30,738 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-03 02:42:30,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-03 02:42:31,140 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2022-11-03 02:42:31,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 02:42:31,333 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:42:31,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:42:31,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1667966651, now seen corresponding path program 1 times [2022-11-03 02:42:31,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:42:31,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1514637774] [2022-11-03 02:42:31,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:42:31,335 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:42:31,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:42:31,336 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:42:31,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-03 02:42:31,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:42:31,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 1499 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-03 02:42:31,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:42:32,655 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:42:32,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:42:33,194 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:42:33,195 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:42:33,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1514637774] [2022-11-03 02:42:33,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1514637774] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:42:33,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [55216662] [2022-11-03 02:42:33,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:42:33,196 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:42:33,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:42:33,197 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:42:33,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2022-11-03 02:42:34,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:42:34,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 1499 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-03 02:42:34,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:42:35,022 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:42:35,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:42:35,423 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:42:35,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [55216662] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:42:35,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910928986] [2022-11-03 02:42:35,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:42:35,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:42:35,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:42:35,424 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:42:35,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-03 02:42:35,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:42:35,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 1499 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-03 02:42:35,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:42:36,587 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:42:36,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:42:37,006 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:42:37,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910928986] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:42:37,007 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:42:37,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 9, 9] total 16 [2022-11-03 02:42:37,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849494197] [2022-11-03 02:42:37,008 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:42:37,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-03 02:42:37,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:42:37,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-03 02:42:37,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2022-11-03 02:42:37,010 INFO L87 Difference]: Start difference. First operand 1197 states and 1693 transitions. Second operand has 16 states, 16 states have (on average 13.5625) internal successors, (217), 16 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:42:37,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:42:37,279 INFO L93 Difference]: Finished difference Result 2185 states and 3088 transitions. [2022-11-03 02:42:37,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 02:42:37,279 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 13.5625) internal successors, (217), 16 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2022-11-03 02:42:37,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:42:37,286 INFO L225 Difference]: With dead ends: 2185 [2022-11-03 02:42:37,286 INFO L226 Difference]: Without dead ends: 2078 [2022-11-03 02:42:37,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 658 GetRequests, 636 SyntacticMatches, 6 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2022-11-03 02:42:37,288 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 234 mSDsluCounter, 1395 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 1543 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:42:37,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 1543 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 55 Unchecked, 0.2s Time] [2022-11-03 02:42:37,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2078 states. [2022-11-03 02:42:37,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2078 to 2076. [2022-11-03 02:42:37,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2076 states, 2075 states have (on average 1.4106024096385543) internal successors, (2927), 2075 states have internal predecessors, (2927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:42:37,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2076 states to 2076 states and 2927 transitions. [2022-11-03 02:42:37,338 INFO L78 Accepts]: Start accepts. Automaton has 2076 states and 2927 transitions. Word has length 110 [2022-11-03 02:42:37,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:42:37,339 INFO L495 AbstractCegarLoop]: Abstraction has 2076 states and 2927 transitions. [2022-11-03 02:42:37,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 13.5625) internal successors, (217), 16 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:42:37,339 INFO L276 IsEmpty]: Start isEmpty. Operand 2076 states and 2927 transitions. [2022-11-03 02:42:37,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-03 02:42:37,343 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:42:37,343 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:42:37,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-03 02:42:37,565 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (24)] Ended with exit code 0 [2022-11-03 02:42:37,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-11-03 02:42:37,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:42:37,959 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:42:37,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:42:37,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1640901049, now seen corresponding path program 1 times [2022-11-03 02:42:37,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:42:37,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [970298021] [2022-11-03 02:42:37,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:42:37,961 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:42:37,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:42:37,963 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:42:37,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-03 02:42:38,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:42:38,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 1499 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-03 02:42:38,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:42:40,016 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:42:40,017 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:42:48,280 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:42:48,280 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:42:48,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [970298021] [2022-11-03 02:42:48,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [970298021] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:42:48,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [282463745] [2022-11-03 02:42:48,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:42:48,281 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:42:48,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:42:48,283 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:42:48,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2022-11-03 02:42:49,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:42:49,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 1499 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-03 02:42:49,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:42:50,738 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:42:50,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:44:01,761 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:44:01,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [282463745] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:44:01,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500545418] [2022-11-03 02:44:01,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:44:01,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:44:01,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:44:01,763 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:44:01,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-11-03 02:44:02,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:44:02,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 1499 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-03 02:44:02,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:44:04,453 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 02:44:04,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:44:10,419 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 02:44:10,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500545418] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:44:10,420 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:44:10,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 11, 11] total 40 [2022-11-03 02:44:10,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891218929] [2022-11-03 02:44:10,420 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:44:10,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-11-03 02:44:10,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:44:10,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-11-03 02:44:10,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=1330, Unknown=27, NotChecked=0, Total=1560 [2022-11-03 02:44:10,423 INFO L87 Difference]: Start difference. First operand 2076 states and 2927 transitions. Second operand has 40 states, 40 states have (on average 13.3) internal successors, (532), 40 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:44:14,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:44:14,087 INFO L93 Difference]: Finished difference Result 2337 states and 3273 transitions. [2022-11-03 02:44:14,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-03 02:44:14,088 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 13.3) internal successors, (532), 40 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2022-11-03 02:44:14,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:44:14,094 INFO L225 Difference]: With dead ends: 2337 [2022-11-03 02:44:14,094 INFO L226 Difference]: Without dead ends: 2335 [2022-11-03 02:44:14,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 681 GetRequests, 621 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 838 ImplicationChecksByTransitivity, 84.8s TimeCoverageRelationStatistics Valid=518, Invalid=2995, Unknown=27, NotChecked=0, Total=3540 [2022-11-03 02:44:14,097 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 816 mSDsluCounter, 3408 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 816 SdHoareTripleChecker+Valid, 3538 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 98 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:44:14,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [816 Valid, 3538 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 98 Unchecked, 0.0s Time] [2022-11-03 02:44:14,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2335 states. [2022-11-03 02:44:14,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2335 to 2316. [2022-11-03 02:44:14,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2316 states, 2315 states have (on average 1.403023758099352) internal successors, (3248), 2315 states have internal predecessors, (3248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:44:14,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2316 states to 2316 states and 3248 transitions. [2022-11-03 02:44:14,153 INFO L78 Accepts]: Start accepts. Automaton has 2316 states and 3248 transitions. Word has length 110 [2022-11-03 02:44:14,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:44:14,154 INFO L495 AbstractCegarLoop]: Abstraction has 2316 states and 3248 transitions. [2022-11-03 02:44:14,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 13.3) internal successors, (532), 40 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:44:14,154 INFO L276 IsEmpty]: Start isEmpty. Operand 2316 states and 3248 transitions. [2022-11-03 02:44:14,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-03 02:44:14,158 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:44:14,158 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:44:14,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-03 02:44:14,389 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (27)] Forceful destruction successful, exit code 0 [2022-11-03 02:44:14,598 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2022-11-03 02:44:14,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:44:14,775 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:44:14,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:44:14,775 INFO L85 PathProgramCache]: Analyzing trace with hash -939301175, now seen corresponding path program 1 times [2022-11-03 02:44:14,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:44:14,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1091674046] [2022-11-03 02:44:14,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:44:14,776 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:44:14,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:44:14,777 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:44:14,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-03 02:44:15,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:44:15,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 1499 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-03 02:44:15,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:44:17,544 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:44:17,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:44:23,096 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:44:23,096 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:44:23,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1091674046] [2022-11-03 02:44:23,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1091674046] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:44:23,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [173959621] [2022-11-03 02:44:23,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:44:23,097 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:44:23,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:44:23,098 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:44:23,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2022-11-03 02:44:24,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:44:24,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 1499 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-03 02:44:24,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:44:25,998 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:44:25,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:45:18,125 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:45:18,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [173959621] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:45:18,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855567488] [2022-11-03 02:45:18,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:45:18,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:45:18,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:45:18,126 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:45:18,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-11-03 02:45:18,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:45:18,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 1499 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-03 02:45:18,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:45:20,722 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 02:45:20,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:45:25,735 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 02:45:25,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855567488] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:45:25,736 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:45:25,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 11, 11] total 39 [2022-11-03 02:45:25,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812883951] [2022-11-03 02:45:25,736 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:45:25,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-11-03 02:45:25,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:45:25,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-11-03 02:45:25,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1280, Unknown=23, NotChecked=0, Total=1482 [2022-11-03 02:45:25,739 INFO L87 Difference]: Start difference. First operand 2316 states and 3248 transitions. Second operand has 39 states, 39 states have (on average 13.615384615384615) internal successors, (531), 39 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:45:29,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:45:29,100 INFO L93 Difference]: Finished difference Result 2871 states and 3984 transitions. [2022-11-03 02:45:29,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-03 02:45:29,101 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 13.615384615384615) internal successors, (531), 39 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2022-11-03 02:45:29,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:45:29,108 INFO L225 Difference]: With dead ends: 2871 [2022-11-03 02:45:29,109 INFO L226 Difference]: Without dead ends: 2869 [2022-11-03 02:45:29,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 683 GetRequests, 623 SyntacticMatches, 3 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 807 ImplicationChecksByTransitivity, 62.0s TimeCoverageRelationStatistics Valid=474, Invalid=2925, Unknown=23, NotChecked=0, Total=3422 [2022-11-03 02:45:29,111 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 732 mSDsluCounter, 3170 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 732 SdHoareTripleChecker+Valid, 3300 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 64 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:45:29,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [732 Valid, 3300 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 64 Unchecked, 0.1s Time] [2022-11-03 02:45:29,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2869 states. [2022-11-03 02:45:29,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2869 to 2832. [2022-11-03 02:45:29,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2832 states, 2831 states have (on average 1.3910279053338044) internal successors, (3938), 2831 states have internal predecessors, (3938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:45:29,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2832 states to 2832 states and 3938 transitions. [2022-11-03 02:45:29,188 INFO L78 Accepts]: Start accepts. Automaton has 2832 states and 3938 transitions. Word has length 110 [2022-11-03 02:45:29,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:45:29,188 INFO L495 AbstractCegarLoop]: Abstraction has 2832 states and 3938 transitions. [2022-11-03 02:45:29,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 13.615384615384615) internal successors, (531), 39 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:45:29,189 INFO L276 IsEmpty]: Start isEmpty. Operand 2832 states and 3938 transitions. [2022-11-03 02:45:29,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-03 02:45:29,193 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:45:29,193 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:45:29,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-11-03 02:45:29,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-11-03 02:45:29,616 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (30)] Ended with exit code 0 [2022-11-03 02:45:29,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 02:45:29,809 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:45:29,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:45:29,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1783306677, now seen corresponding path program 1 times [2022-11-03 02:45:29,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:45:29,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1449338898] [2022-11-03 02:45:29,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:45:29,812 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:45:29,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:45:29,813 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:45:29,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-03 02:45:30,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:45:30,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 1499 conjuncts, 52 conjunts are in the unsatisfiable core [2022-11-03 02:45:30,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:45:32,526 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:45:32,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:45:40,098 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:45:40,099 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:45:40,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1449338898] [2022-11-03 02:45:40,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1449338898] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:45:40,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1176180103] [2022-11-03 02:45:40,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:45:40,099 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:45:40,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:45:40,100 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:45:40,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (33)] Waiting until timeout for monitored process [2022-11-03 02:45:41,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:45:41,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 1499 conjuncts, 52 conjunts are in the unsatisfiable core [2022-11-03 02:45:41,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:45:43,150 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:45:43,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:46:47,128 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:46:47,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1176180103] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:46:47,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352418447] [2022-11-03 02:46:47,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:46:47,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:46:47,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:46:47,130 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:46:47,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-11-03 02:46:47,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:46:47,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 1499 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-03 02:46:47,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:46:50,002 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 02:46:50,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:46:55,663 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 02:46:55,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352418447] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:46:55,663 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:46:55,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 11, 11] total 40 [2022-11-03 02:46:55,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969148275] [2022-11-03 02:46:55,664 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:46:55,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-11-03 02:46:55,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:46:55,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-11-03 02:46:55,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=1330, Unknown=27, NotChecked=0, Total=1560 [2022-11-03 02:46:55,666 INFO L87 Difference]: Start difference. First operand 2832 states and 3938 transitions. Second operand has 40 states, 40 states have (on average 13.3) internal successors, (532), 40 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:47:00,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:47:00,146 INFO L93 Difference]: Finished difference Result 5697 states and 7914 transitions. [2022-11-03 02:47:00,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-03 02:47:00,147 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 13.3) internal successors, (532), 40 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2022-11-03 02:47:00,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:47:00,160 INFO L225 Difference]: With dead ends: 5697 [2022-11-03 02:47:00,161 INFO L226 Difference]: Without dead ends: 5695 [2022-11-03 02:47:00,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 681 GetRequests, 621 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 837 ImplicationChecksByTransitivity, 77.3s TimeCoverageRelationStatistics Valid=518, Invalid=2995, Unknown=27, NotChecked=0, Total=3540 [2022-11-03 02:47:00,163 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 756 mSDsluCounter, 2907 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 756 SdHoareTripleChecker+Valid, 3035 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 71 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:47:00,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [756 Valid, 3035 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 71 Unchecked, 0.0s Time] [2022-11-03 02:47:00,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5695 states. [2022-11-03 02:47:00,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5695 to 5628. [2022-11-03 02:47:00,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5628 states, 5627 states have (on average 1.3918606717611517) internal successors, (7832), 5627 states have internal predecessors, (7832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:47:00,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5628 states to 5628 states and 7832 transitions. [2022-11-03 02:47:00,321 INFO L78 Accepts]: Start accepts. Automaton has 5628 states and 7832 transitions. Word has length 110 [2022-11-03 02:47:00,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:47:00,322 INFO L495 AbstractCegarLoop]: Abstraction has 5628 states and 7832 transitions. [2022-11-03 02:47:00,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 13.3) internal successors, (532), 40 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:47:00,322 INFO L276 IsEmpty]: Start isEmpty. Operand 5628 states and 7832 transitions. [2022-11-03 02:47:00,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-03 02:47:00,331 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:47:00,331 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:47:00,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-11-03 02:47:00,565 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (33)] Forceful destruction successful, exit code 0 [2022-11-03 02:47:00,773 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (32)] Ended with exit code 0 [2022-11-03 02:47:00,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:47:00,959 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:47:00,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:47:00,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1798825395, now seen corresponding path program 1 times [2022-11-03 02:47:00,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:47:00,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1641593578] [2022-11-03 02:47:00,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:47:00,961 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:47:00,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:47:00,961 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:47:00,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-11-03 02:47:01,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:47:01,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 1499 conjuncts, 52 conjunts are in the unsatisfiable core [2022-11-03 02:47:01,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:47:03,906 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:47:03,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:47:17,127 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:47:17,127 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:47:17,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1641593578] [2022-11-03 02:47:17,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1641593578] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:47:17,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1468440618] [2022-11-03 02:47:17,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:47:17,127 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:47:17,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:47:17,128 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:47:17,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (36)] Waiting until timeout for monitored process [2022-11-03 02:47:18,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:47:18,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 1499 conjuncts, 52 conjunts are in the unsatisfiable core [2022-11-03 02:47:18,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:47:23,688 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:47:23,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:48:13,193 WARN L230 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2022-11-03 02:48:13,193 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2022-11-03 02:48:13,194 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2022-11-03 02:48:13,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118157876] [2022-11-03 02:48:13,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:48:13,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:48:13,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:48:13,196 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:48:13,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-11-03 02:48:13,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:48:13,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 1499 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-03 02:48:13,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:48:13,954 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2022-11-03 02:48:13,954 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:48:13,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-03 02:48:13,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175359359] [2022-11-03 02:48:13,955 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-03 02:48:13,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-03 02:48:13,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:48:13,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-03 02:48:13,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=376, Unknown=21, NotChecked=0, Total=506 [2022-11-03 02:48:13,956 INFO L87 Difference]: Start difference. First operand 5628 states and 7832 transitions. Second operand has 18 states, 18 states have (on average 12.11111111111111) internal successors, (218), 18 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:48:13,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:48:13,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 412 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 51.7s TimeCoverageRelationStatistics Valid=109, Invalid=376, Unknown=21, NotChecked=0, Total=506 [2022-11-03 02:48:13,959 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:48:13,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 3 Unchecked, 0.0s Time] [2022-11-03 02:48:14,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-11-03 02:48:14,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (36)] Forceful destruction successful, exit code 0 [2022-11-03 02:48:14,375 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (35)] Ended with exit code 0 [2022-11-03 02:48:14,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c41b772e-f2fb-4230-874b-60386023c75e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:48:14,561 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@267ac6c5 at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:360) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:206) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkInternal(IncrementalHoareTripleChecker.java:131) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.checkInternal(ChainingHoareTripleChecker.java:460) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.checkInternal(ChainingHoareTripleChecker.java:104) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:95) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:357) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.chooseFalseSuccessor2(BasicAbstractInterpolantAutomaton.java:107) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:73) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:246) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:218) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:210) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.computeAutomataDifference(NwaCegarLoop.java:353) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.refineAbstraction(NwaCegarLoop.java:325) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:487) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-03 02:48:14,564 INFO L158 Benchmark]: Toolchain (without parser) took 382479.52ms. Allocated memory was 75.5MB in the beginning and 901.8MB in the end (delta: 826.3MB). Free memory was 51.2MB in the beginning and 780.9MB in the end (delta: -729.7MB). Peak memory consumption was 96.3MB. Max. memory is 16.1GB. [2022-11-03 02:48:14,564 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 52.4MB. Free memory was 32.8MB in the beginning and 32.8MB in the end (delta: 46.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:48:14,564 INFO L158 Benchmark]: CACSL2BoogieTranslator took 785.44ms. Allocated memory is still 75.5MB. Free memory was 51.1MB in the beginning and 43.5MB in the end (delta: 7.5MB). Peak memory consumption was 23.4MB. Max. memory is 16.1GB. [2022-11-03 02:48:14,565 INFO L158 Benchmark]: Boogie Procedure Inliner took 151.21ms. Allocated memory is still 75.5MB. Free memory was 43.5MB in the beginning and 31.7MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-03 02:48:14,565 INFO L158 Benchmark]: Boogie Preprocessor took 110.90ms. Allocated memory is still 75.5MB. Free memory was 31.7MB in the beginning and 40.4MB in the end (delta: -8.7MB). Peak memory consumption was 8.7MB. Max. memory is 16.1GB. [2022-11-03 02:48:14,565 INFO L158 Benchmark]: RCFGBuilder took 2106.73ms. Allocated memory was 75.5MB in the beginning and 167.8MB in the end (delta: 92.3MB). Free memory was 40.4MB in the beginning and 108.5MB in the end (delta: -68.1MB). Peak memory consumption was 42.5MB. Max. memory is 16.1GB. [2022-11-03 02:48:14,566 INFO L158 Benchmark]: TraceAbstraction took 379317.75ms. Allocated memory was 167.8MB in the beginning and 901.8MB in the end (delta: 734.0MB). Free memory was 108.5MB in the beginning and 780.9MB in the end (delta: -672.4MB). Peak memory consumption was 63.0MB. Max. memory is 16.1GB. [2022-11-03 02:48:14,567 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 52.4MB. Free memory was 32.8MB in the beginning and 32.8MB in the end (delta: 46.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 785.44ms. Allocated memory is still 75.5MB. Free memory was 51.1MB in the beginning and 43.5MB in the end (delta: 7.5MB). Peak memory consumption was 23.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 151.21ms. Allocated memory is still 75.5MB. Free memory was 43.5MB in the beginning and 31.7MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 110.90ms. Allocated memory is still 75.5MB. Free memory was 31.7MB in the beginning and 40.4MB in the end (delta: -8.7MB). Peak memory consumption was 8.7MB. Max. memory is 16.1GB. * RCFGBuilder took 2106.73ms. Allocated memory was 75.5MB in the beginning and 167.8MB in the end (delta: 92.3MB). Free memory was 40.4MB in the beginning and 108.5MB in the end (delta: -68.1MB). Peak memory consumption was 42.5MB. Max. memory is 16.1GB. * TraceAbstraction took 379317.75ms. Allocated memory was 167.8MB in the beginning and 901.8MB in the end (delta: 734.0MB). Free memory was 108.5MB in the beginning and 780.9MB in the end (delta: -672.4MB). Peak memory consumption was 63.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@267ac6c5 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@267ac6c5: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@267ac6c5