./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_bcuvis32.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_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_bcuvis32.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 0b778e020f927dcd69e8c93a4e5f815b351554054566b59c07b83f21be0bc1f1 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 21:05:32,046 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:05:32,049 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:05:32,107 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:05:32,108 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:05:32,113 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:05:32,116 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:05:32,122 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:05:32,124 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:05:32,131 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:05:32,132 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:05:32,135 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:05:32,136 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:05:32,139 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:05:32,141 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:05:32,143 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:05:32,144 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:05:32,146 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:05:32,147 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:05:32,156 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:05:32,158 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:05:32,159 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:05:32,163 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:05:32,164 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:05:32,175 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:05:32,175 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:05:32,176 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:05:32,178 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:05:32,179 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:05:32,180 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:05:32,181 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:05:32,182 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:05:32,185 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:05:32,186 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:05:32,188 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:05:32,188 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:05:32,189 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:05:32,190 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:05:32,190 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:05:32,191 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:05:32,192 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:05:32,193 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-02 21:05:32,241 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:05:32,242 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:05:32,243 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:05:32,243 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:05:32,244 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:05:32,245 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:05:32,246 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:05:32,246 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:05:32,246 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:05:32,247 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:05:32,248 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:05:32,249 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:05:32,249 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:05:32,249 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:05:32,250 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:05:32,250 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:05:32,251 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:05:32,251 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:05:32,251 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:05:32,252 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:05:32,252 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:05:32,252 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:05:32,253 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:05:32,253 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:05:32,253 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:05:32,254 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:05:32,254 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 21:05:32,255 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:05:32,255 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:05:32,255 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:05:32,256 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_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0b778e020f927dcd69e8c93a4e5f815b351554054566b59c07b83f21be0bc1f1 [2022-11-02 21:05:32,629 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:05:32,686 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:05:32,691 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:05:32,693 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:05:32,694 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:05:32,695 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_bcuvis32.c [2022-11-02 21:05:32,768 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/data/177ecfb8d/87a51669fadf4ec28a8f72b74b8de140/FLAG5b207bcfd [2022-11-02 21:05:33,344 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:05:33,345 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_bcuvis32.c [2022-11-02 21:05:33,356 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/data/177ecfb8d/87a51669fadf4ec28a8f72b74b8de140/FLAG5b207bcfd [2022-11-02 21:05:33,681 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/data/177ecfb8d/87a51669fadf4ec28a8f72b74b8de140 [2022-11-02 21:05:33,685 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:05:33,687 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:05:33,695 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:05:33,695 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:05:33,700 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:05:33,701 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:05:33" (1/1) ... [2022-11-02 21:05:33,702 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@955e895 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:33, skipping insertion in model container [2022-11-02 21:05:33,703 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:05:33" (1/1) ... [2022-11-02 21:05:33,712 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:05:33,748 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:05:33,992 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_41e87ac2-6995-4abd-92e0-cef89a3e31d5/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_bcuvis32.c[1107,1120] [2022-11-02 21:05:34,104 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:05:34,109 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:05:34,123 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_41e87ac2-6995-4abd-92e0-cef89a3e31d5/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_bcuvis32.c[1107,1120] [2022-11-02 21:05:34,201 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:05:34,216 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:05:34,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:34 WrapperNode [2022-11-02 21:05:34,217 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:05:34,218 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:05:34,218 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:05:34,218 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:05:34,226 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:34" (1/1) ... [2022-11-02 21:05:34,240 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:34" (1/1) ... [2022-11-02 21:05:34,308 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 477 [2022-11-02 21:05:34,308 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:05:34,309 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:05:34,309 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:05:34,309 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:05:34,323 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:34" (1/1) ... [2022-11-02 21:05:34,323 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:34" (1/1) ... [2022-11-02 21:05:34,334 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:34" (1/1) ... [2022-11-02 21:05:34,335 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:34" (1/1) ... [2022-11-02 21:05:34,355 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:34" (1/1) ... [2022-11-02 21:05:34,362 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:34" (1/1) ... [2022-11-02 21:05:34,367 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:34" (1/1) ... [2022-11-02 21:05:34,371 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:34" (1/1) ... [2022-11-02 21:05:34,380 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:05:34,381 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:05:34,382 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:05:34,382 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:05:34,383 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:34" (1/1) ... [2022-11-02 21:05:34,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:05:34,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:05:34,432 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:05:34,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:05:34,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:05:34,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:05:34,783 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:05:34,786 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:05:35,482 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:05:35,492 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:05:35,493 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 21:05:35,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:05:35 BoogieIcfgContainer [2022-11-02 21:05:35,502 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:05:35,506 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:05:35,506 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:05:35,511 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:05:35,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:05:33" (1/3) ... [2022-11-02 21:05:35,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6536c06d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:05:35, skipping insertion in model container [2022-11-02 21:05:35,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:34" (2/3) ... [2022-11-02 21:05:35,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6536c06d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:05:35, skipping insertion in model container [2022-11-02 21:05:35,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:05:35" (3/3) ... [2022-11-02 21:05:35,515 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_QF_BV_bcuvis32.c [2022-11-02 21:05:35,541 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:05:35,541 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 21:05:35,629 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:05:35,636 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@415e2e3e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:05:35,637 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 21:05:35,643 INFO L276 IsEmpty]: Start isEmpty. Operand has 69 states, 67 states have (on average 1.492537313432836) internal successors, (100), 68 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:35,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 21:05:35,651 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:35,652 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 21:05:35,652 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:35,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:35,659 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-02 21:05:35,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:05:35,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942463219] [2022-11-02 21:05:35,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:35,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:05:36,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:05:36,093 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 21:05:36,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:05:36,264 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 21:05:36,269 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 21:05:36,271 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-02 21:05:36,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 21:05:36,280 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-02 21:05:36,286 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 21:05:36,335 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-02 21:05:36,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 09:05:36 BoogieIcfgContainer [2022-11-02 21:05:36,357 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 21:05:36,360 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 21:05:36,360 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 21:05:36,360 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 21:05:36,361 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:05:35" (3/4) ... [2022-11-02 21:05:36,365 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-02 21:05:36,366 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 21:05:36,367 INFO L158 Benchmark]: Toolchain (without parser) took 2680.47ms. Allocated memory is still 134.2MB. Free memory was 98.0MB in the beginning and 72.4MB in the end (delta: 25.6MB). Peak memory consumption was 26.0MB. Max. memory is 16.1GB. [2022-11-02 21:05:36,369 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 134.2MB. Free memory is still 115.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:05:36,370 INFO L158 Benchmark]: CACSL2BoogieTranslator took 522.34ms. Allocated memory is still 134.2MB. Free memory was 97.8MB in the beginning and 103.8MB in the end (delta: -6.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-02 21:05:36,371 INFO L158 Benchmark]: Boogie Procedure Inliner took 90.09ms. Allocated memory is still 134.2MB. Free memory was 103.8MB in the beginning and 98.5MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-02 21:05:36,372 INFO L158 Benchmark]: Boogie Preprocessor took 71.72ms. Allocated memory is still 134.2MB. Free memory was 98.5MB in the beginning and 95.4MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 21:05:36,380 INFO L158 Benchmark]: RCFGBuilder took 1120.37ms. Allocated memory is still 134.2MB. Free memory was 94.8MB in the beginning and 106.7MB in the end (delta: -11.8MB). Peak memory consumption was 45.3MB. Max. memory is 16.1GB. [2022-11-02 21:05:36,381 INFO L158 Benchmark]: TraceAbstraction took 851.02ms. Allocated memory is still 134.2MB. Free memory was 106.0MB in the beginning and 73.1MB in the end (delta: 32.8MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2022-11-02 21:05:36,383 INFO L158 Benchmark]: Witness Printer took 6.02ms. Allocated memory is still 134.2MB. Free memory was 73.1MB in the beginning and 72.4MB in the end (delta: 719.7kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 21:05:36,394 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 134.2MB. Free memory is still 115.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 522.34ms. Allocated memory is still 134.2MB. Free memory was 97.8MB in the beginning and 103.8MB in the end (delta: -6.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 90.09ms. Allocated memory is still 134.2MB. Free memory was 103.8MB in the beginning and 98.5MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 71.72ms. Allocated memory is still 134.2MB. Free memory was 98.5MB in the beginning and 95.4MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1120.37ms. Allocated memory is still 134.2MB. Free memory was 94.8MB in the beginning and 106.7MB in the end (delta: -11.8MB). Peak memory consumption was 45.3MB. Max. memory is 16.1GB. * TraceAbstraction took 851.02ms. Allocated memory is still 134.2MB. Free memory was 106.0MB in the beginning and 73.1MB in the end (delta: 32.8MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Witness Printer took 6.02ms. Allocated memory is still 134.2MB. Free memory was 73.1MB in the beginning and 72.4MB in the end (delta: 719.7kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 145, overapproximation of bitwiseOr at line 143, overapproximation of bitwiseAnd at line 109. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 32); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (32 - 1); [L28] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 1); [L29] const SORT_3 msb_SORT_3 = (SORT_3)1 << (1 - 1); [L31] const SORT_16 mask_SORT_16 = (SORT_16)-1 >> (sizeof(SORT_16) * 8 - 2); [L32] const SORT_16 msb_SORT_16 = (SORT_16)1 << (2 - 1); [L34] const SORT_59 mask_SORT_59 = (SORT_59)-1 >> (sizeof(SORT_59) * 8 - 3); [L35] const SORT_59 msb_SORT_59 = (SORT_59)1 << (3 - 1); [L37] const SORT_16 var_17 = 0; [L38] const SORT_16 var_20 = 3; [L39] const SORT_3 var_22 = 1; [L40] const SORT_3 var_36 = 0; [L41] const SORT_16 var_77 = 2; [L42] const SORT_16 var_80 = 1; [L43] const SORT_59 var_92 = 0; [L45] SORT_1 input_2; [L46] SORT_3 input_4; [L47] SORT_1 input_5; [L48] SORT_3 input_6; [L49] SORT_3 input_7; [L50] SORT_3 input_8; [L51] SORT_1 input_9; [L52] SORT_3 input_10; [L53] SORT_3 input_11; [L54] SORT_1 input_12; [L55] SORT_3 input_13; [L56] SORT_3 input_14; [L57] SORT_3 input_15; [L58] SORT_1 input_32; [L59] SORT_3 input_34; [L60] SORT_1 input_39; [L61] SORT_3 input_41; [L62] SORT_1 input_47; [L63] SORT_1 input_53; [L64] SORT_1 input_55; [L65] SORT_1 input_57; [L66] SORT_59 input_60; [L67] SORT_59 input_66; [L68] SORT_1 input_69; [L69] SORT_3 input_73; [L71] SORT_16 state_18 = __VERIFIER_nondet_uchar() & mask_SORT_16; [L72] SORT_3 state_23 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L73] SORT_3 state_37 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L74] SORT_3 state_43 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L75] SORT_3 state_45 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L76] SORT_3 state_49 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L77] SORT_3 state_51 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L78] SORT_3 state_62 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L79] SORT_3 state_64 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L80] SORT_3 state_71 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L82] SORT_16 init_19_arg_1 = var_17; [L83] state_18 = init_19_arg_1 [L84] SORT_3 init_24_arg_1 = var_22; [L85] state_23 = init_24_arg_1 [L86] SORT_3 init_38_arg_1 = var_36; [L87] state_37 = init_38_arg_1 [L88] SORT_3 init_44_arg_1 = var_36; [L89] state_43 = init_44_arg_1 [L90] SORT_3 init_46_arg_1 = var_36; [L91] state_45 = init_46_arg_1 [L92] SORT_3 init_50_arg_1 = var_36; [L93] state_49 = init_50_arg_1 [L94] SORT_3 init_52_arg_1 = var_36; [L95] state_51 = init_52_arg_1 [L96] SORT_3 init_63_arg_1 = var_36; [L97] state_62 = init_63_arg_1 [L98] SORT_3 init_65_arg_1 = var_36; [L99] state_64 = init_65_arg_1 [L100] SORT_3 init_72_arg_1 = var_36; [L101] state_71 = init_72_arg_1 VAL [init_19_arg_1=0, init_24_arg_1=1, init_38_arg_1=0, init_44_arg_1=0, init_46_arg_1=0, init_50_arg_1=0, init_52_arg_1=0, init_63_arg_1=0, init_65_arg_1=0, init_72_arg_1=0, mask_SORT_1=4294967295, mask_SORT_16=3, mask_SORT_3=1, mask_SORT_59=7, msb_SORT_1=2147483648, msb_SORT_16=2, msb_SORT_3=1, msb_SORT_59=4, state_18=0, state_23=1, state_37=0, state_43=0, state_45=0, state_49=0, state_51=0, state_62=0, state_64=0, state_71=0, var_17=0, var_20=3, var_22=1, var_36=0, var_77=2, var_80=1, var_92=0] [L104] input_2 = __VERIFIER_nondet_uint() [L105] input_4 = __VERIFIER_nondet_uchar() [L106] input_5 = __VERIFIER_nondet_uint() [L107] input_6 = __VERIFIER_nondet_uchar() [L108] input_7 = __VERIFIER_nondet_uchar() [L109] input_7 = input_7 & mask_SORT_3 [L110] input_8 = __VERIFIER_nondet_uchar() [L111] input_8 = input_8 & mask_SORT_3 [L112] input_9 = __VERIFIER_nondet_uint() [L113] input_10 = __VERIFIER_nondet_uchar() [L114] input_10 = input_10 & mask_SORT_3 [L115] input_11 = __VERIFIER_nondet_uchar() [L116] input_11 = input_11 & mask_SORT_3 [L117] input_12 = __VERIFIER_nondet_uint() [L118] input_13 = __VERIFIER_nondet_uchar() [L119] input_14 = __VERIFIER_nondet_uchar() [L120] input_15 = __VERIFIER_nondet_uchar() [L121] input_32 = __VERIFIER_nondet_uint() [L122] input_34 = __VERIFIER_nondet_uchar() [L123] input_39 = __VERIFIER_nondet_uint() [L124] input_41 = __VERIFIER_nondet_uchar() [L125] input_47 = __VERIFIER_nondet_uint() [L126] input_53 = __VERIFIER_nondet_uint() [L127] input_55 = __VERIFIER_nondet_uint() [L128] input_57 = __VERIFIER_nondet_uint() [L129] input_60 = __VERIFIER_nondet_uchar() [L130] input_66 = __VERIFIER_nondet_uchar() [L131] input_69 = __VERIFIER_nondet_uint() [L132] input_73 = __VERIFIER_nondet_uchar() [L135] SORT_16 var_21_arg_0 = state_18; [L136] SORT_16 var_21_arg_1 = var_20; [L137] SORT_3 var_21 = var_21_arg_0 != var_21_arg_1; [L138] SORT_3 var_25_arg_0 = state_23; [L139] SORT_3 var_25_arg_1 = var_22; [L140] SORT_3 var_25 = var_25_arg_0 == var_25_arg_1; [L141] SORT_3 var_26_arg_0 = var_21; [L142] SORT_3 var_26_arg_1 = var_25; [L143] SORT_3 var_26 = var_26_arg_0 | var_26_arg_1; [L144] SORT_3 var_29_arg_0 = var_26; [L145] SORT_3 var_29 = ~var_29_arg_0; [L146] SORT_3 var_30_arg_0 = var_22; [L147] SORT_3 var_30_arg_1 = var_29; [L148] SORT_3 var_30 = var_30_arg_0 & var_30_arg_1; [L149] var_30 = var_30 & mask_SORT_3 [L150] SORT_3 bad_31_arg_0 = var_30; [L151] CALL __VERIFIER_assert(!(bad_31_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, 69 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-02 21:05:36,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_bcuvis32.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 0b778e020f927dcd69e8c93a4e5f815b351554054566b59c07b83f21be0bc1f1 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 21:05:39,371 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:05:39,374 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:05:39,433 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:05:39,434 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:05:39,440 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:05:39,443 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:05:39,451 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:05:39,457 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:05:39,459 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:05:39,461 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:05:39,464 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:05:39,465 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:05:39,471 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:05:39,472 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:05:39,474 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:05:39,477 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:05:39,479 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:05:39,482 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:05:39,490 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:05:39,493 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:05:39,495 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:05:39,498 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:05:39,501 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:05:39,511 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:05:39,513 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:05:39,513 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:05:39,514 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:05:39,516 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:05:39,517 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:05:39,518 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:05:39,519 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:05:39,521 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:05:39,522 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:05:39,523 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:05:39,524 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:05:39,525 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:05:39,525 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:05:39,525 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:05:39,528 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:05:39,528 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:05:39,530 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-02 21:05:39,589 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:05:39,589 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:05:39,591 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:05:39,591 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:05:39,593 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:05:39,593 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:05:39,595 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:05:39,595 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:05:39,595 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:05:39,596 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:05:39,597 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:05:39,597 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:05:39,597 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:05:39,598 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:05:39,598 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 21:05:39,598 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-02 21:05:39,599 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-02 21:05:39,599 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:05:39,599 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:05:39,599 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:05:39,599 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:05:39,600 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:05:39,600 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:05:39,600 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:05:39,600 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:05:39,601 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:05:39,601 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:05:39,601 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-02 21:05:39,602 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-02 21:05:39,602 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:05:39,602 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:05:39,602 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:05:39,603 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-02 21:05:39,603 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_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0b778e020f927dcd69e8c93a4e5f815b351554054566b59c07b83f21be0bc1f1 [2022-11-02 21:05:40,099 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:05:40,140 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:05:40,145 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:05:40,146 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:05:40,150 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:05:40,152 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_bcuvis32.c [2022-11-02 21:05:40,242 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/data/8e81ca4b8/4fd4ffee2dd24d33bd68ac87b814d850/FLAG8ff1526af [2022-11-02 21:05:41,017 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:05:41,017 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_bcuvis32.c [2022-11-02 21:05:41,028 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/data/8e81ca4b8/4fd4ffee2dd24d33bd68ac87b814d850/FLAG8ff1526af [2022-11-02 21:05:41,318 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/data/8e81ca4b8/4fd4ffee2dd24d33bd68ac87b814d850 [2022-11-02 21:05:41,323 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:05:41,325 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:05:41,326 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:05:41,326 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:05:41,338 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:05:41,339 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:05:41" (1/1) ... [2022-11-02 21:05:41,341 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ba56e16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:41, skipping insertion in model container [2022-11-02 21:05:41,341 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:05:41" (1/1) ... [2022-11-02 21:05:41,350 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:05:41,384 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:05:41,536 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_41e87ac2-6995-4abd-92e0-cef89a3e31d5/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_bcuvis32.c[1107,1120] [2022-11-02 21:05:41,651 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:05:41,656 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:05:41,692 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_41e87ac2-6995-4abd-92e0-cef89a3e31d5/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_bcuvis32.c[1107,1120] [2022-11-02 21:05:41,824 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:05:41,849 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:05:41,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:41 WrapperNode [2022-11-02 21:05:41,850 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:05:41,852 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:05:41,852 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:05:41,852 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:05:41,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:41" (1/1) ... [2022-11-02 21:05:41,887 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:41" (1/1) ... [2022-11-02 21:05:41,962 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 477 [2022-11-02 21:05:41,962 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:05:41,963 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:05:41,963 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:05:41,963 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:05:41,976 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:41" (1/1) ... [2022-11-02 21:05:41,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:41" (1/1) ... [2022-11-02 21:05:41,990 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:41" (1/1) ... [2022-11-02 21:05:41,991 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:41" (1/1) ... [2022-11-02 21:05:42,018 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:41" (1/1) ... [2022-11-02 21:05:42,024 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:41" (1/1) ... [2022-11-02 21:05:42,027 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:41" (1/1) ... [2022-11-02 21:05:42,029 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:41" (1/1) ... [2022-11-02 21:05:42,034 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:05:42,035 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:05:42,036 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:05:42,036 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:05:42,037 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:41" (1/1) ... [2022-11-02 21:05:42,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:05:42,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:05:42,073 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:05:42,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:05:42,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:05:42,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:05:42,390 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:05:42,393 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:05:43,069 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:05:43,079 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:05:43,080 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 21:05:43,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:05:43 BoogieIcfgContainer [2022-11-02 21:05:43,091 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:05:43,094 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:05:43,094 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:05:43,098 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:05:43,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:05:41" (1/3) ... [2022-11-02 21:05:43,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fadcc01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:05:43, skipping insertion in model container [2022-11-02 21:05:43,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:41" (2/3) ... [2022-11-02 21:05:43,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fadcc01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:05:43, skipping insertion in model container [2022-11-02 21:05:43,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:05:43" (3/3) ... [2022-11-02 21:05:43,104 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_QF_BV_bcuvis32.c [2022-11-02 21:05:43,129 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:05:43,129 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 21:05:43,252 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:05:43,264 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3d9bd42a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:05:43,264 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 21:05:43,273 INFO L276 IsEmpty]: Start isEmpty. Operand has 69 states, 67 states have (on average 1.492537313432836) internal successors, (100), 68 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:43,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 21:05:43,284 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:43,285 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 21:05:43,286 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:43,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:43,296 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-02 21:05:43,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:43,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [974579056] [2022-11-02 21:05:43,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:43,316 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:43,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:43,322 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:43,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-02 21:05:43,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:43,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 21:05:43,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:43,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:43,854 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:05:43,855 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:43,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [974579056] [2022-11-02 21:05:43,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [974579056] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:43,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:43,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:05:43,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351197000] [2022-11-02 21:05:43,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:43,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:05:43,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:43,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:05:43,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:05:43,900 INFO L87 Difference]: Start difference. First operand has 69 states, 67 states have (on average 1.492537313432836) internal successors, (100), 68 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:44,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:44,062 INFO L93 Difference]: Finished difference Result 194 states and 291 transitions. [2022-11-02 21:05:44,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:05:44,066 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-02 21:05:44,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:44,079 INFO L225 Difference]: With dead ends: 194 [2022-11-02 21:05:44,080 INFO L226 Difference]: Without dead ends: 127 [2022-11-02 21:05:44,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:05:44,092 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 177 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:44,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 256 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:05:44,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-11-02 21:05:44,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 67. [2022-11-02 21:05:44,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.4545454545454546) internal successors, (96), 66 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:44,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 96 transitions. [2022-11-02 21:05:44,134 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 96 transitions. Word has length 5 [2022-11-02 21:05:44,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:44,135 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 96 transitions. [2022-11-02 21:05:44,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:44,135 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 96 transitions. [2022-11-02 21:05:44,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-02 21:05:44,137 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:44,137 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:05:44,158 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:44,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:44,350 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:44,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:44,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1357274601, now seen corresponding path program 1 times [2022-11-02 21:05:44,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:44,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [586263296] [2022-11-02 21:05:44,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:44,353 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:44,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:44,354 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:44,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-02 21:05:44,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:44,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:05:44,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:44,789 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:44,789 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:05:44,790 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:44,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [586263296] [2022-11-02 21:05:44,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [586263296] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:44,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:44,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:05:44,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959293164] [2022-11-02 21:05:44,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:44,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:05:44,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:44,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:05:44,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:05:44,795 INFO L87 Difference]: Start difference. First operand 67 states and 96 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:44,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:44,880 INFO L93 Difference]: Finished difference Result 251 states and 366 transitions. [2022-11-02 21:05:44,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:05:44,882 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-11-02 21:05:44,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:44,884 INFO L225 Difference]: With dead ends: 251 [2022-11-02 21:05:44,887 INFO L226 Difference]: Without dead ends: 188 [2022-11-02 21:05:44,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:05:44,889 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 251 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:44,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 354 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:05:44,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-11-02 21:05:44,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 73. [2022-11-02 21:05:44,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.4444444444444444) internal successors, (104), 72 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:44,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 104 transitions. [2022-11-02 21:05:44,903 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 104 transitions. Word has length 66 [2022-11-02 21:05:44,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:44,904 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 104 transitions. [2022-11-02 21:05:44,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:44,905 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 104 transitions. [2022-11-02 21:05:44,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-02 21:05:44,907 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:44,907 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:05:44,923 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:45,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:45,123 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:45,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:45,124 INFO L85 PathProgramCache]: Analyzing trace with hash -96357351, now seen corresponding path program 1 times [2022-11-02 21:05:45,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:45,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [893090829] [2022-11-02 21:05:45,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:45,126 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:45,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:45,134 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:45,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-02 21:05:45,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:45,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 21:05:45,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:45,521 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:45,522 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:05:45,522 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:45,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [893090829] [2022-11-02 21:05:45,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [893090829] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:45,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:45,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:05:45,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478580519] [2022-11-02 21:05:45,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:45,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:05:45,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:45,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:05:45,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:05:45,525 INFO L87 Difference]: Start difference. First operand 73 states and 104 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:45,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:45,654 INFO L93 Difference]: Finished difference Result 262 states and 379 transitions. [2022-11-02 21:05:45,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:05:45,655 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-11-02 21:05:45,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:45,657 INFO L225 Difference]: With dead ends: 262 [2022-11-02 21:05:45,657 INFO L226 Difference]: Without dead ends: 199 [2022-11-02 21:05:45,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:05:45,660 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 345 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:45,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [345 Valid, 518 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:05:45,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2022-11-02 21:05:45,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 77. [2022-11-02 21:05:45,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.4342105263157894) internal successors, (109), 76 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:45,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 109 transitions. [2022-11-02 21:05:45,672 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 109 transitions. Word has length 66 [2022-11-02 21:05:45,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:45,672 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 109 transitions. [2022-11-02 21:05:45,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:45,673 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 109 transitions. [2022-11-02 21:05:45,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-02 21:05:45,674 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:45,674 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:05:45,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:45,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:45,890 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:45,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:45,891 INFO L85 PathProgramCache]: Analyzing trace with hash 347543323, now seen corresponding path program 1 times [2022-11-02 21:05:45,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:45,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2142511522] [2022-11-02 21:05:45,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:45,893 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:45,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:45,894 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:45,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-02 21:05:46,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:46,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 21:05:46,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:46,348 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:46,348 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:05:46,349 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:46,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2142511522] [2022-11-02 21:05:46,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2142511522] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:46,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:46,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:05:46,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983077733] [2022-11-02 21:05:46,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:46,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:05:46,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:46,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:05:46,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:05:46,353 INFO L87 Difference]: Start difference. First operand 77 states and 109 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:46,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:46,580 INFO L93 Difference]: Finished difference Result 256 states and 369 transitions. [2022-11-02 21:05:46,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:05:46,583 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-11-02 21:05:46,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:46,587 INFO L225 Difference]: With dead ends: 256 [2022-11-02 21:05:46,587 INFO L226 Difference]: Without dead ends: 193 [2022-11-02 21:05:46,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:05:46,590 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 328 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:46,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 481 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:05:46,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2022-11-02 21:05:46,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 79. [2022-11-02 21:05:46,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.4230769230769231) internal successors, (111), 78 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:46,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 111 transitions. [2022-11-02 21:05:46,602 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 111 transitions. Word has length 66 [2022-11-02 21:05:46,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:46,603 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 111 transitions. [2022-11-02 21:05:46,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:46,603 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 111 transitions. [2022-11-02 21:05:46,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-02 21:05:46,604 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:46,605 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:05:46,626 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:46,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:46,806 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:46,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:46,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1681042787, now seen corresponding path program 1 times [2022-11-02 21:05:46,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:46,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1345848796] [2022-11-02 21:05:46,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:46,808 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:46,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:46,810 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:46,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-02 21:05:47,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:47,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 21:05:47,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:47,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:47,316 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:05:47,317 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:47,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1345848796] [2022-11-02 21:05:47,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1345848796] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:47,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:47,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:05:47,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398474464] [2022-11-02 21:05:47,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:47,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:05:47,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:47,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:05:47,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:05:47,320 INFO L87 Difference]: Start difference. First operand 79 states and 111 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:47,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:47,470 INFO L93 Difference]: Finished difference Result 268 states and 386 transitions. [2022-11-02 21:05:47,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:05:47,471 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-11-02 21:05:47,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:47,478 INFO L225 Difference]: With dead ends: 268 [2022-11-02 21:05:47,478 INFO L226 Difference]: Without dead ends: 205 [2022-11-02 21:05:47,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:05:47,484 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 337 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:47,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 515 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:05:47,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2022-11-02 21:05:47,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 83. [2022-11-02 21:05:47,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.4146341463414633) internal successors, (116), 82 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:47,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 116 transitions. [2022-11-02 21:05:47,512 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 116 transitions. Word has length 66 [2022-11-02 21:05:47,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:47,514 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 116 transitions. [2022-11-02 21:05:47,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:47,521 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 116 transitions. [2022-11-02 21:05:47,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-02 21:05:47,522 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:47,522 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:05:47,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:47,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:47,724 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:47,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:47,724 INFO L85 PathProgramCache]: Analyzing trace with hash -2034131169, now seen corresponding path program 1 times [2022-11-02 21:05:47,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:47,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1518193045] [2022-11-02 21:05:47,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:47,725 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:47,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:47,726 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:47,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-02 21:05:48,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:48,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 21:05:48,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:48,166 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:48,167 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:05:48,167 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:48,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1518193045] [2022-11-02 21:05:48,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1518193045] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:48,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:48,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:05:48,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657080696] [2022-11-02 21:05:48,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:48,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:05:48,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:48,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:05:48,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:05:48,171 INFO L87 Difference]: Start difference. First operand 83 states and 116 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:48,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:48,278 INFO L93 Difference]: Finished difference Result 210 states and 301 transitions. [2022-11-02 21:05:48,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:05:48,279 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-11-02 21:05:48,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:48,281 INFO L225 Difference]: With dead ends: 210 [2022-11-02 21:05:48,281 INFO L226 Difference]: Without dead ends: 147 [2022-11-02 21:05:48,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:05:48,283 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 155 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:48,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 284 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:05:48,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2022-11-02 21:05:48,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 85. [2022-11-02 21:05:48,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.4047619047619047) internal successors, (118), 84 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:48,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 118 transitions. [2022-11-02 21:05:48,302 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 118 transitions. Word has length 66 [2022-11-02 21:05:48,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:48,303 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 118 transitions. [2022-11-02 21:05:48,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:48,303 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 118 transitions. [2022-11-02 21:05:48,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-02 21:05:48,304 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:48,305 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:05:48,322 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:48,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:48,519 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:48,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:48,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1367349789, now seen corresponding path program 1 times [2022-11-02 21:05:48,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:48,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [260171306] [2022-11-02 21:05:48,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:48,526 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:48,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:48,532 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:48,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-02 21:05:48,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:48,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 21:05:48,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:48,936 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:48,936 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:05:48,936 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:48,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [260171306] [2022-11-02 21:05:48,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [260171306] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:48,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:48,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:05:48,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244063251] [2022-11-02 21:05:48,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:48,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:05:48,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:48,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:05:48,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:05:48,940 INFO L87 Difference]: Start difference. First operand 85 states and 118 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:49,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:49,130 INFO L93 Difference]: Finished difference Result 268 states and 384 transitions. [2022-11-02 21:05:49,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:05:49,131 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-11-02 21:05:49,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:49,133 INFO L225 Difference]: With dead ends: 268 [2022-11-02 21:05:49,133 INFO L226 Difference]: Without dead ends: 205 [2022-11-02 21:05:49,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:05:49,134 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 308 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:49,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 467 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:05:49,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2022-11-02 21:05:49,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 93. [2022-11-02 21:05:49,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.4021739130434783) internal successors, (129), 92 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:49,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 129 transitions. [2022-11-02 21:05:49,143 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 129 transitions. Word has length 66 [2022-11-02 21:05:49,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:49,144 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 129 transitions. [2022-11-02 21:05:49,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:49,144 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 129 transitions. [2022-11-02 21:05:49,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-02 21:05:49,146 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:49,146 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:05:49,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:49,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:49,362 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:49,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:49,363 INFO L85 PathProgramCache]: Analyzing trace with hash 2026881311, now seen corresponding path program 1 times [2022-11-02 21:05:49,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:49,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [528196581] [2022-11-02 21:05:49,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:49,364 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:49,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:49,365 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:49,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-02 21:05:49,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:49,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-02 21:05:49,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:49,788 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:49,788 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:05:49,788 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:49,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [528196581] [2022-11-02 21:05:49,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [528196581] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:49,789 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:49,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:05:49,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736541213] [2022-11-02 21:05:49,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:49,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:05:49,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:49,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:05:49,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:05:49,792 INFO L87 Difference]: Start difference. First operand 93 states and 129 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:49,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:49,990 INFO L93 Difference]: Finished difference Result 256 states and 365 transitions. [2022-11-02 21:05:49,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:05:49,991 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-11-02 21:05:49,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:49,992 INFO L225 Difference]: With dead ends: 256 [2022-11-02 21:05:49,992 INFO L226 Difference]: Without dead ends: 193 [2022-11-02 21:05:49,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:05:49,994 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 278 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:49,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 449 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:05:49,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2022-11-02 21:05:50,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 95. [2022-11-02 21:05:50,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.3936170212765957) internal successors, (131), 94 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:50,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 131 transitions. [2022-11-02 21:05:50,007 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 131 transitions. Word has length 66 [2022-11-02 21:05:50,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:50,008 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 131 transitions. [2022-11-02 21:05:50,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:50,008 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 131 transitions. [2022-11-02 21:05:50,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-02 21:05:50,009 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:50,010 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:05:50,040 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-11-02 21:05:50,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:50,231 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:50,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:50,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1182875809, now seen corresponding path program 1 times [2022-11-02 21:05:50,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:50,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [181582980] [2022-11-02 21:05:50,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:50,232 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:50,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:50,233 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:50,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-02 21:05:50,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:50,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:05:50,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:50,597 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:50,598 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:05:50,598 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:50,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [181582980] [2022-11-02 21:05:50,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [181582980] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:50,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:50,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:05:50,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116867264] [2022-11-02 21:05:50,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:50,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:05:50,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:50,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:05:50,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:05:50,604 INFO L87 Difference]: Start difference. First operand 95 states and 131 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:50,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:50,645 INFO L93 Difference]: Finished difference Result 251 states and 359 transitions. [2022-11-02 21:05:50,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:05:50,646 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-11-02 21:05:50,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:50,648 INFO L225 Difference]: With dead ends: 251 [2022-11-02 21:05:50,648 INFO L226 Difference]: Without dead ends: 188 [2022-11-02 21:05:50,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:05:50,652 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 184 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:50,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 347 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:05:50,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-11-02 21:05:50,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 97. [2022-11-02 21:05:50,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.3854166666666667) internal successors, (133), 96 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:50,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 133 transitions. [2022-11-02 21:05:50,663 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 133 transitions. Word has length 66 [2022-11-02 21:05:50,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:50,666 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 133 transitions. [2022-11-02 21:05:50,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:50,668 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 133 transitions. [2022-11-02 21:05:50,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-02 21:05:50,671 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:50,671 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:05:50,694 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-11-02 21:05:50,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:50,895 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:50,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:50,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1110489251, now seen corresponding path program 1 times [2022-11-02 21:05:50,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:50,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1064534950] [2022-11-02 21:05:50,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:50,897 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:50,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:50,899 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:50,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-02 21:05:51,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:51,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:05:51,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:51,282 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:51,283 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:05:51,283 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:51,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1064534950] [2022-11-02 21:05:51,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1064534950] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:51,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:51,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:05:51,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133596688] [2022-11-02 21:05:51,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:51,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:05:51,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:51,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:05:51,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:05:51,286 INFO L87 Difference]: Start difference. First operand 97 states and 133 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:51,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:51,327 INFO L93 Difference]: Finished difference Result 251 states and 358 transitions. [2022-11-02 21:05:51,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:05:51,328 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-11-02 21:05:51,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:51,329 INFO L225 Difference]: With dead ends: 251 [2022-11-02 21:05:51,330 INFO L226 Difference]: Without dead ends: 188 [2022-11-02 21:05:51,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:05:51,331 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 163 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:51,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 346 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:05:51,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-11-02 21:05:51,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 105. [2022-11-02 21:05:51,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 1.3846153846153846) internal successors, (144), 104 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:51,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 144 transitions. [2022-11-02 21:05:51,338 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 144 transitions. Word has length 66 [2022-11-02 21:05:51,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:51,339 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 144 transitions. [2022-11-02 21:05:51,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:51,340 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 144 transitions. [2022-11-02 21:05:51,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-02 21:05:51,341 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:51,341 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:05:51,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:51,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:51,557 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:51,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:51,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1251037861, now seen corresponding path program 1 times [2022-11-02 21:05:51,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:51,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2059742375] [2022-11-02 21:05:51,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:51,558 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:51,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:51,559 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:51,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-02 21:05:51,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:51,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 21:05:51,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:51,917 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:51,918 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:05:51,918 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:51,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2059742375] [2022-11-02 21:05:51,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2059742375] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:51,919 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:51,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:05:51,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796212348] [2022-11-02 21:05:51,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:51,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:05:51,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:51,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:05:51,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:05:51,921 INFO L87 Difference]: Start difference. First operand 105 states and 144 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:52,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:52,056 INFO L93 Difference]: Finished difference Result 286 states and 407 transitions. [2022-11-02 21:05:52,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:05:52,059 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-11-02 21:05:52,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:52,060 INFO L225 Difference]: With dead ends: 286 [2022-11-02 21:05:52,060 INFO L226 Difference]: Without dead ends: 223 [2022-11-02 21:05:52,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:05:52,061 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 297 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:52,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 467 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:05:52,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2022-11-02 21:05:52,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 107. [2022-11-02 21:05:52,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 1.3773584905660377) internal successors, (146), 106 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:52,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 146 transitions. [2022-11-02 21:05:52,067 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 146 transitions. Word has length 66 [2022-11-02 21:05:52,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:52,067 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 146 transitions. [2022-11-02 21:05:52,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:52,068 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 146 transitions. [2022-11-02 21:05:52,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-02 21:05:52,068 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:52,069 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:05:52,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:52,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:52,282 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:52,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:52,283 INFO L85 PathProgramCache]: Analyzing trace with hash -554400473, now seen corresponding path program 1 times [2022-11-02 21:05:52,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:52,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1411334932] [2022-11-02 21:05:52,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:52,283 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:52,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:52,284 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:52,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-02 21:05:52,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:52,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:05:52,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:52,566 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:52,566 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:05:52,567 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:52,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1411334932] [2022-11-02 21:05:52,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1411334932] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:52,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:52,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:05:52,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523857351] [2022-11-02 21:05:52,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:52,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:05:52,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:52,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:05:52,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:05:52,569 INFO L87 Difference]: Start difference. First operand 107 states and 146 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:52,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:52,615 INFO L93 Difference]: Finished difference Result 251 states and 356 transitions. [2022-11-02 21:05:52,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:05:52,616 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-11-02 21:05:52,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:52,617 INFO L225 Difference]: With dead ends: 251 [2022-11-02 21:05:52,618 INFO L226 Difference]: Without dead ends: 188 [2022-11-02 21:05:52,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:05:52,619 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 151 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:52,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 344 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:05:52,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-11-02 21:05:52,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 109. [2022-11-02 21:05:52,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.3703703703703705) internal successors, (148), 108 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:52,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 148 transitions. [2022-11-02 21:05:52,624 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 148 transitions. Word has length 66 [2022-11-02 21:05:52,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:52,625 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 148 transitions. [2022-11-02 21:05:52,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:52,625 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 148 transitions. [2022-11-02 21:05:52,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-02 21:05:52,626 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:52,626 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:05:52,646 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:52,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:52,842 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:52,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:52,842 INFO L85 PathProgramCache]: Analyzing trace with hash -131698647, now seen corresponding path program 1 times [2022-11-02 21:05:52,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:52,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [133218293] [2022-11-02 21:05:52,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:52,843 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:52,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:52,845 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:52,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-02 21:05:53,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:53,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:05:53,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:53,115 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:53,115 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:05:53,116 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:53,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [133218293] [2022-11-02 21:05:53,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [133218293] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:53,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:53,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:05:53,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711170016] [2022-11-02 21:05:53,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:53,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:05:53,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:53,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:05:53,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:05:53,118 INFO L87 Difference]: Start difference. First operand 109 states and 148 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:53,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:53,172 INFO L93 Difference]: Finished difference Result 251 states and 355 transitions. [2022-11-02 21:05:53,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:05:53,173 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-11-02 21:05:53,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:53,174 INFO L225 Difference]: With dead ends: 251 [2022-11-02 21:05:53,174 INFO L226 Difference]: Without dead ends: 188 [2022-11-02 21:05:53,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:05:53,175 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 145 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:53,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 328 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:05:53,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-11-02 21:05:53,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 111. [2022-11-02 21:05:53,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 1.3636363636363635) internal successors, (150), 110 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:53,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 150 transitions. [2022-11-02 21:05:53,180 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 150 transitions. Word has length 66 [2022-11-02 21:05:53,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:53,181 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 150 transitions. [2022-11-02 21:05:53,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:53,181 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 150 transitions. [2022-11-02 21:05:53,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-02 21:05:53,182 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:53,182 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:05:53,201 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:53,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:53,395 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:53,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:53,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1820642389, now seen corresponding path program 1 times [2022-11-02 21:05:53,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:53,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [436986825] [2022-11-02 21:05:53,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:53,397 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:53,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:53,398 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:53,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-02 21:05:53,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:53,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:05:53,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:53,691 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:53,692 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:05:53,692 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:53,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [436986825] [2022-11-02 21:05:53,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [436986825] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:53,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:53,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:05:53,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732519008] [2022-11-02 21:05:53,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:53,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:05:53,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:53,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:05:53,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:05:53,694 INFO L87 Difference]: Start difference. First operand 111 states and 150 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:53,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:53,725 INFO L93 Difference]: Finished difference Result 251 states and 354 transitions. [2022-11-02 21:05:53,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:05:53,726 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-11-02 21:05:53,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:53,727 INFO L225 Difference]: With dead ends: 251 [2022-11-02 21:05:53,727 INFO L226 Difference]: Without dead ends: 188 [2022-11-02 21:05:53,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:05:53,728 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 139 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:53,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 342 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:05:53,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-11-02 21:05:53,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 113. [2022-11-02 21:05:53,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.3571428571428572) internal successors, (152), 112 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:53,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 152 transitions. [2022-11-02 21:05:53,734 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 152 transitions. Word has length 66 [2022-11-02 21:05:53,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:53,734 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 152 transitions. [2022-11-02 21:05:53,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:53,734 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 152 transitions. [2022-11-02 21:05:53,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-02 21:05:53,735 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:53,735 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:05:53,750 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2022-11-02 21:05:53,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:53,951 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:53,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:53,951 INFO L85 PathProgramCache]: Analyzing trace with hash 885977005, now seen corresponding path program 1 times [2022-11-02 21:05:53,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:53,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [263156260] [2022-11-02 21:05:53,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:53,952 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:53,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:53,953 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:53,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-02 21:05:54,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:54,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 21:05:54,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:54,343 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:54,343 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:05:54,343 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:54,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [263156260] [2022-11-02 21:05:54,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [263156260] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:54,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:54,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:05:54,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395939159] [2022-11-02 21:05:54,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:54,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:05:54,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:54,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:05:54,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:05:54,346 INFO L87 Difference]: Start difference. First operand 113 states and 152 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:54,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:54,462 INFO L93 Difference]: Finished difference Result 242 states and 340 transitions. [2022-11-02 21:05:54,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:05:54,463 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-11-02 21:05:54,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:54,464 INFO L225 Difference]: With dead ends: 242 [2022-11-02 21:05:54,464 INFO L226 Difference]: Without dead ends: 179 [2022-11-02 21:05:54,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:05:54,465 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 195 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:54,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 405 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:05:54,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-11-02 21:05:54,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 117. [2022-11-02 21:05:54,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 116 states have (on average 1.353448275862069) internal successors, (157), 116 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) [2022-11-02 21:05:54,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 157 transitions. [2022-11-02 21:05:54,473 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 157 transitions. Word has length 66 [2022-11-02 21:05:54,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:54,474 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 157 transitions. [2022-11-02 21:05:54,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:54,474 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 157 transitions. [2022-11-02 21:05:54,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-02 21:05:54,476 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:54,476 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:05:54,495 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:54,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:54,677 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:54,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:54,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1472783019, now seen corresponding path program 1 times [2022-11-02 21:05:54,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:54,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [612753248] [2022-11-02 21:05:54,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:54,678 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:54,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:54,680 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:54,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-02 21:05:54,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:54,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 21:05:54,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:55,168 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:55,169 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:05:55,169 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:55,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [612753248] [2022-11-02 21:05:55,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [612753248] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:55,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:55,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:05:55,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519461765] [2022-11-02 21:05:55,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:55,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:05:55,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:55,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:05:55,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:05:55,172 INFO L87 Difference]: Start difference. First operand 117 states and 157 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:55,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:55,333 INFO L93 Difference]: Finished difference Result 298 states and 420 transitions. [2022-11-02 21:05:55,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:05:55,334 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-11-02 21:05:55,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:55,335 INFO L225 Difference]: With dead ends: 298 [2022-11-02 21:05:55,336 INFO L226 Difference]: Without dead ends: 235 [2022-11-02 21:05:55,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:05:55,337 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 268 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:55,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 455 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:05:55,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2022-11-02 21:05:55,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 123. [2022-11-02 21:05:55,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 1.3524590163934427) internal successors, (165), 122 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:55,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 165 transitions. [2022-11-02 21:05:55,342 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 165 transitions. Word has length 66 [2022-11-02 21:05:55,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:55,343 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 165 transitions. [2022-11-02 21:05:55,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:55,343 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 165 transitions. [2022-11-02 21:05:55,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-02 21:05:55,344 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:55,344 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:05:55,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:55,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:55,545 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:55,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:55,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1047176915, now seen corresponding path program 1 times [2022-11-02 21:05:55,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:55,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [548672993] [2022-11-02 21:05:55,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:55,546 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:55,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:55,547 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:55,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-02 21:05:55,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:55,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:05:55,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:55,878 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:55,878 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:05:55,879 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:55,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [548672993] [2022-11-02 21:05:55,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [548672993] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:55,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:55,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:05:55,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860429835] [2022-11-02 21:05:55,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:55,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:05:55,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:55,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:05:55,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:05:55,881 INFO L87 Difference]: Start difference. First operand 123 states and 165 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:55,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:55,914 INFO L93 Difference]: Finished difference Result 251 states and 351 transitions. [2022-11-02 21:05:55,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:05:55,915 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-11-02 21:05:55,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:55,916 INFO L225 Difference]: With dead ends: 251 [2022-11-02 21:05:55,916 INFO L226 Difference]: Without dead ends: 188 [2022-11-02 21:05:55,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:05:55,917 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 106 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:55,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 339 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:05:55,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-11-02 21:05:55,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 125. [2022-11-02 21:05:55,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 1.346774193548387) internal successors, (167), 124 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:55,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 167 transitions. [2022-11-02 21:05:55,924 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 167 transitions. Word has length 66 [2022-11-02 21:05:55,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:55,924 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 167 transitions. [2022-11-02 21:05:55,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:55,925 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 167 transitions. [2022-11-02 21:05:55,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-02 21:05:55,925 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:55,926 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:05:55,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:56,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:56,141 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:56,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:56,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1045329873, now seen corresponding path program 1 times [2022-11-02 21:05:56,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:56,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [41325861] [2022-11-02 21:05:56,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:56,143 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:56,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:56,144 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:56,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-02 21:05:56,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:56,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-02 21:05:56,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:56,953 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:05:56,953 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:05:58,478 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:58,478 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:58,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [41325861] [2022-11-02 21:05:58,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [41325861] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:05:58,479 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:05:58,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2022-11-02 21:05:58,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87798123] [2022-11-02 21:05:58,482 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:05:58,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-02 21:05:58,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:58,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-02 21:05:58,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-11-02 21:05:58,483 INFO L87 Difference]: Start difference. First operand 125 states and 167 transitions. Second operand has 13 states, 13 states have (on average 10.0) internal successors, (130), 13 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:58,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:58,913 INFO L93 Difference]: Finished difference Result 250 states and 349 transitions. [2022-11-02 21:05:58,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 21:05:58,914 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 10.0) internal successors, (130), 13 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-11-02 21:05:58,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:58,917 INFO L225 Difference]: With dead ends: 250 [2022-11-02 21:05:58,917 INFO L226 Difference]: Without dead ends: 248 [2022-11-02 21:05:58,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2022-11-02 21:05:58,918 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 715 mSDsluCounter, 930 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 715 SdHoareTripleChecker+Valid, 1060 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 138 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:58,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [715 Valid, 1060 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 96 Invalid, 0 Unknown, 138 Unchecked, 0.2s Time] [2022-11-02 21:05:58,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-11-02 21:05:58,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 186. [2022-11-02 21:05:58,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 185 states have (on average 1.3891891891891892) internal successors, (257), 185 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:58,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 257 transitions. [2022-11-02 21:05:58,927 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 257 transitions. Word has length 66 [2022-11-02 21:05:58,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:58,928 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 257 transitions. [2022-11-02 21:05:58,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.0) internal successors, (130), 13 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:58,928 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 257 transitions. [2022-11-02 21:05:58,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-02 21:05:58,930 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:58,930 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:05:58,956 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:59,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:59,147 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:59,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:59,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1462844367, now seen corresponding path program 1 times [2022-11-02 21:05:59,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:59,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1370659675] [2022-11-02 21:05:59,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:59,148 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:59,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:59,149 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:59,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-02 21:05:59,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:59,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 660 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 21:05:59,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:59,829 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 51 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 21:05:59,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:06:00,177 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 51 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:06:00,177 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:06:00,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1370659675] [2022-11-02 21:06:00,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1370659675] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:06:00,178 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:06:00,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 13 [2022-11-02 21:06:00,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274364561] [2022-11-02 21:06:00,179 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:06:00,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-02 21:06:00,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:06:00,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-02 21:06:00,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-11-02 21:06:00,182 INFO L87 Difference]: Start difference. First operand 186 states and 257 transitions. Second operand has 13 states, 13 states have (on average 14.615384615384615) internal successors, (190), 13 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:00,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:06:00,575 INFO L93 Difference]: Finished difference Result 712 states and 1027 transitions. [2022-11-02 21:06:00,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:06:00,576 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 14.615384615384615) internal successors, (190), 13 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2022-11-02 21:06:00,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:06:00,579 INFO L225 Difference]: With dead ends: 712 [2022-11-02 21:06:00,579 INFO L226 Difference]: Without dead ends: 588 [2022-11-02 21:06:00,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=132, Invalid=330, Unknown=0, NotChecked=0, Total=462 [2022-11-02 21:06:00,581 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 716 mSDsluCounter, 1016 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 716 SdHoareTripleChecker+Valid, 1128 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 101 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:06:00,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [716 Valid, 1128 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 94 Invalid, 0 Unknown, 101 Unchecked, 0.2s Time] [2022-11-02 21:06:00,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2022-11-02 21:06:00,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 308. [2022-11-02 21:06:00,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 307 states have (on average 1.4201954397394136) internal successors, (436), 307 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:00,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 436 transitions. [2022-11-02 21:06:00,600 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 436 transitions. Word has length 127 [2022-11-02 21:06:00,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:06:00,601 INFO L495 AbstractCegarLoop]: Abstraction has 308 states and 436 transitions. [2022-11-02 21:06:00,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 14.615384615384615) internal successors, (190), 13 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:00,601 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 436 transitions. [2022-11-02 21:06:00,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-02 21:06:00,603 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:06:00,604 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:06:00,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-02 21:06:00,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:06:00,821 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:06:00,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:06:00,821 INFO L85 PathProgramCache]: Analyzing trace with hash 803536819, now seen corresponding path program 1 times [2022-11-02 21:06:00,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:06:00,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [812032638] [2022-11-02 21:06:00,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:06:00,822 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:06:00,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:06:00,823 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:06:00,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-02 21:06:01,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:06:01,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 660 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 21:06:01,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:06:01,594 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 37 proven. 13 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-02 21:06:01,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:06:01,995 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 37 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:06:01,995 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:06:01,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [812032638] [2022-11-02 21:06:01,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [812032638] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:06:01,996 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:06:01,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 13 [2022-11-02 21:06:01,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597607333] [2022-11-02 21:06:01,996 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:06:01,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-02 21:06:01,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:06:01,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-02 21:06:01,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-11-02 21:06:01,998 INFO L87 Difference]: Start difference. First operand 308 states and 436 transitions. Second operand has 13 states, 13 states have (on average 14.76923076923077) internal successors, (192), 13 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:02,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:06:02,416 INFO L93 Difference]: Finished difference Result 768 states and 1106 transitions. [2022-11-02 21:06:02,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 21:06:02,417 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 14.76923076923077) internal successors, (192), 13 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2022-11-02 21:06:02,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:06:02,420 INFO L225 Difference]: With dead ends: 768 [2022-11-02 21:06:02,420 INFO L226 Difference]: Without dead ends: 522 [2022-11-02 21:06:02,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=123, Invalid=297, Unknown=0, NotChecked=0, Total=420 [2022-11-02 21:06:02,422 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 532 mSDsluCounter, 921 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 1030 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 78 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:06:02,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [532 Valid, 1030 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 148 Invalid, 0 Unknown, 78 Unchecked, 0.2s Time] [2022-11-02 21:06:02,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2022-11-02 21:06:02,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 308. [2022-11-02 21:06:02,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 307 states have (on average 1.4136807817589576) internal successors, (434), 307 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:02,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 434 transitions. [2022-11-02 21:06:02,441 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 434 transitions. Word has length 127 [2022-11-02 21:06:02,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:06:02,441 INFO L495 AbstractCegarLoop]: Abstraction has 308 states and 434 transitions. [2022-11-02 21:06:02,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 14.76923076923077) internal successors, (192), 13 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:02,442 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 434 transitions. [2022-11-02 21:06:02,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-02 21:06:02,443 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:06:02,444 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:06:02,467 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-02 21:06:02,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:06:02,658 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:06:02,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:06:02,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1463068341, now seen corresponding path program 1 times [2022-11-02 21:06:02,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:06:02,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [68069884] [2022-11-02 21:06:02,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:06:02,660 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:06:02,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:06:02,661 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:06:02,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-02 21:06:02,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:06:02,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 660 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-02 21:06:02,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:06:03,724 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 35 proven. 27 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 21:06:03,724 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:06:05,002 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 35 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:06:05,002 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:06:05,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [68069884] [2022-11-02 21:06:05,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [68069884] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:06:05,003 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:06:05,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 13 [2022-11-02 21:06:05,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545078692] [2022-11-02 21:06:05,004 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:06:05,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-02 21:06:05,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:06:05,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-02 21:06:05,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-11-02 21:06:05,006 INFO L87 Difference]: Start difference. First operand 308 states and 434 transitions. Second operand has 13 states, 13 states have (on average 14.615384615384615) internal successors, (190), 13 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:05,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:06:05,562 INFO L93 Difference]: Finished difference Result 802 states and 1152 transitions. [2022-11-02 21:06:05,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 21:06:05,563 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 14.615384615384615) internal successors, (190), 13 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2022-11-02 21:06:05,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:06:05,565 INFO L225 Difference]: With dead ends: 802 [2022-11-02 21:06:05,566 INFO L226 Difference]: Without dead ends: 556 [2022-11-02 21:06:05,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2022-11-02 21:06:05,567 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 736 mSDsluCounter, 1228 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 736 SdHoareTripleChecker+Valid, 1337 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 103 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:06:05,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [736 Valid, 1337 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 189 Invalid, 0 Unknown, 103 Unchecked, 0.3s Time] [2022-11-02 21:06:05,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2022-11-02 21:06:05,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 308. [2022-11-02 21:06:05,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 307 states have (on average 1.4071661237785016) internal successors, (432), 307 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:05,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 432 transitions. [2022-11-02 21:06:05,598 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 432 transitions. Word has length 127 [2022-11-02 21:06:05,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:06:05,599 INFO L495 AbstractCegarLoop]: Abstraction has 308 states and 432 transitions. [2022-11-02 21:06:05,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 14.615384615384615) internal successors, (190), 13 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:05,599 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 432 transitions. [2022-11-02 21:06:05,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-02 21:06:05,601 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:06:05,601 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:06:05,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-02 21:06:05,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:06:05,818 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:06:05,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:06:05,819 INFO L85 PathProgramCache]: Analyzing trace with hash 619062839, now seen corresponding path program 1 times [2022-11-02 21:06:05,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:06:05,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1952235700] [2022-11-02 21:06:05,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:06:05,820 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:06:05,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:06:05,821 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:06:05,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-02 21:06:06,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:06:06,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 660 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 21:06:06,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:06:06,668 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 23 proven. 11 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-02 21:06:06,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:06:07,074 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 23 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:06:07,075 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:06:07,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1952235700] [2022-11-02 21:06:07,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1952235700] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:06:07,076 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:06:07,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 13 [2022-11-02 21:06:07,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581957711] [2022-11-02 21:06:07,076 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:06:07,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-02 21:06:07,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:06:07,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-02 21:06:07,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-11-02 21:06:07,079 INFO L87 Difference]: Start difference. First operand 308 states and 432 transitions. Second operand has 13 states, 13 states have (on average 15.076923076923077) internal successors, (196), 13 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:07,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:06:07,579 INFO L93 Difference]: Finished difference Result 804 states and 1152 transitions. [2022-11-02 21:06:07,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 21:06:07,582 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 15.076923076923077) internal successors, (196), 13 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2022-11-02 21:06:07,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:06:07,584 INFO L225 Difference]: With dead ends: 804 [2022-11-02 21:06:07,584 INFO L226 Difference]: Without dead ends: 558 [2022-11-02 21:06:07,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=125, Invalid=337, Unknown=0, NotChecked=0, Total=462 [2022-11-02 21:06:07,586 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 728 mSDsluCounter, 1208 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1340 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 62 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:06:07,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 1340 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 180 Invalid, 0 Unknown, 62 Unchecked, 0.3s Time] [2022-11-02 21:06:07,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2022-11-02 21:06:07,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 328. [2022-11-02 21:06:07,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 327 states have (on average 1.400611620795107) internal successors, (458), 327 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:07,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 458 transitions. [2022-11-02 21:06:07,603 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 458 transitions. Word has length 127 [2022-11-02 21:06:07,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:06:07,604 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 458 transitions. [2022-11-02 21:06:07,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 15.076923076923077) internal successors, (196), 13 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:07,604 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 458 transitions. [2022-11-02 21:06:07,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-02 21:06:07,606 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:06:07,606 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:06:07,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-02 21:06:07,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:06:07,823 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:06:07,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:06:07,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1186375495, now seen corresponding path program 1 times [2022-11-02 21:06:07,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:06:07,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1305189256] [2022-11-02 21:06:07,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:06:07,824 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:06:07,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:06:07,825 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:06:07,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-02 21:06:08,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:06:08,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 660 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 21:06:08,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:06:08,571 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 19 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:06:08,572 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:06:08,848 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 64 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:06:08,849 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:06:08,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1305189256] [2022-11-02 21:06:08,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1305189256] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:06:08,849 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:06:08,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2022-11-02 21:06:08,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127853484] [2022-11-02 21:06:08,849 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:06:08,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 21:06:08,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:06:08,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 21:06:08,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:06:08,851 INFO L87 Difference]: Start difference. First operand 328 states and 458 transitions. Second operand has 10 states, 10 states have (on average 18.9) internal successors, (189), 10 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:09,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:06:09,193 INFO L93 Difference]: Finished difference Result 1436 states and 2050 transitions. [2022-11-02 21:06:09,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:06:09,194 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 18.9) internal successors, (189), 10 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2022-11-02 21:06:09,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:06:09,198 INFO L225 Difference]: With dead ends: 1436 [2022-11-02 21:06:09,198 INFO L226 Difference]: Without dead ends: 1170 [2022-11-02 21:06:09,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2022-11-02 21:06:09,200 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 649 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 649 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:06:09,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [649 Valid, 707 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:06:09,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1170 states. [2022-11-02 21:06:09,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1170 to 592. [2022-11-02 21:06:09,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 591 states have (on average 1.4145516074450084) internal successors, (836), 591 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:09,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 836 transitions. [2022-11-02 21:06:09,228 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 836 transitions. Word has length 127 [2022-11-02 21:06:09,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:06:09,229 INFO L495 AbstractCegarLoop]: Abstraction has 592 states and 836 transitions. [2022-11-02 21:06:09,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.9) internal successors, (189), 10 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:09,230 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 836 transitions. [2022-11-02 21:06:09,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-02 21:06:09,231 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:06:09,231 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:06:09,249 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-02 21:06:09,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:06:09,448 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:06:09,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:06:09,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1419648059, now seen corresponding path program 1 times [2022-11-02 21:06:09,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:06:09,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1791957558] [2022-11-02 21:06:09,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:06:09,450 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:06:09,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:06:09,451 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:06:09,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-02 21:06:09,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:06:09,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 660 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:06:09,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:06:10,032 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 15 proven. 31 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-02 21:06:10,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:06:10,129 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-02 21:06:10,130 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:06:10,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1791957558] [2022-11-02 21:06:10,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1791957558] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 21:06:10,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:06:10,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2022-11-02 21:06:10,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601731477] [2022-11-02 21:06:10,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:06:10,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:06:10,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:06:10,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:06:10,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:06:10,133 INFO L87 Difference]: Start difference. First operand 592 states and 836 transitions. Second operand has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:10,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:06:10,235 INFO L93 Difference]: Finished difference Result 2448 states and 3483 transitions. [2022-11-02 21:06:10,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:06:10,236 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2022-11-02 21:06:10,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:06:10,244 INFO L225 Difference]: With dead ends: 2448 [2022-11-02 21:06:10,245 INFO L226 Difference]: Without dead ends: 1918 [2022-11-02 21:06:10,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:06:10,247 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 314 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 602 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:06:10,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 602 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:06:10,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1918 states. [2022-11-02 21:06:10,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1918 to 872. [2022-11-02 21:06:10,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 872 states, 871 states have (on average 1.409873708381171) internal successors, (1228), 871 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:10,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 1228 transitions. [2022-11-02 21:06:10,289 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 1228 transitions. Word has length 127 [2022-11-02 21:06:10,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:06:10,289 INFO L495 AbstractCegarLoop]: Abstraction has 872 states and 1228 transitions. [2022-11-02 21:06:10,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:10,290 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 1228 transitions. [2022-11-02 21:06:10,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-02 21:06:10,292 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:06:10,292 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:06:10,308 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-02 21:06:10,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:06:10,508 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:06:10,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:06:10,508 INFO L85 PathProgramCache]: Analyzing trace with hash 139784381, now seen corresponding path program 1 times [2022-11-02 21:06:10,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:06:10,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2013895235] [2022-11-02 21:06:10,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:06:10,509 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:06:10,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:06:10,510 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:06:10,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-02 21:06:10,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:06:10,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 660 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:06:10,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:06:11,131 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 13 proven. 33 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-02 21:06:11,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:06:11,230 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-02 21:06:11,230 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:06:11,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2013895235] [2022-11-02 21:06:11,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2013895235] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 21:06:11,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:06:11,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2022-11-02 21:06:11,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523287186] [2022-11-02 21:06:11,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:06:11,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:06:11,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:06:11,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:06:11,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:06:11,233 INFO L87 Difference]: Start difference. First operand 872 states and 1228 transitions. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:11,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:06:11,334 INFO L93 Difference]: Finished difference Result 3828 states and 5405 transitions. [2022-11-02 21:06:11,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:06:11,335 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2022-11-02 21:06:11,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:06:11,345 INFO L225 Difference]: With dead ends: 3828 [2022-11-02 21:06:11,345 INFO L226 Difference]: Without dead ends: 3018 [2022-11-02 21:06:11,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-02 21:06:11,348 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 460 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:06:11,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [460 Valid, 410 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:06:11,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3018 states. [2022-11-02 21:06:11,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3018 to 1416. [2022-11-02 21:06:11,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1416 states, 1415 states have (on average 1.4049469964664312) internal successors, (1988), 1415 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:11,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1416 states to 1416 states and 1988 transitions. [2022-11-02 21:06:11,417 INFO L78 Accepts]: Start accepts. Automaton has 1416 states and 1988 transitions. Word has length 127 [2022-11-02 21:06:11,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:06:11,417 INFO L495 AbstractCegarLoop]: Abstraction has 1416 states and 1988 transitions. [2022-11-02 21:06:11,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:11,418 INFO L276 IsEmpty]: Start isEmpty. Operand 1416 states and 1988 transitions. [2022-11-02 21:06:11,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-02 21:06:11,420 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:06:11,420 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:06:11,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-02 21:06:11,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:06:11,638 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:06:11,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:06:11,638 INFO L85 PathProgramCache]: Analyzing trace with hash 726590395, now seen corresponding path program 1 times [2022-11-02 21:06:11,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:06:11,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [446773124] [2022-11-02 21:06:11,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:06:11,639 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:06:11,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:06:11,640 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:06:11,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-02 21:06:11,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:06:11,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 660 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 21:06:11,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:06:12,507 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 7 proven. 27 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-02 21:06:12,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:06:12,943 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 7 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:06:12,943 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:06:12,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [446773124] [2022-11-02 21:06:12,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [446773124] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:06:12,944 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:06:12,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 13 [2022-11-02 21:06:12,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980130732] [2022-11-02 21:06:12,946 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:06:12,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-02 21:06:12,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:06:12,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-02 21:06:12,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-11-02 21:06:12,949 INFO L87 Difference]: Start difference. First operand 1416 states and 1988 transitions. Second operand has 13 states, 13 states have (on average 16.0) internal successors, (208), 13 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:13,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:06:13,512 INFO L93 Difference]: Finished difference Result 4012 states and 5700 transitions. [2022-11-02 21:06:13,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 21:06:13,514 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 16.0) internal successors, (208), 13 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2022-11-02 21:06:13,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:06:13,523 INFO L225 Difference]: With dead ends: 4012 [2022-11-02 21:06:13,524 INFO L226 Difference]: Without dead ends: 2658 [2022-11-02 21:06:13,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=129, Invalid=333, Unknown=0, NotChecked=0, Total=462 [2022-11-02 21:06:13,529 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 749 mSDsluCounter, 1167 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 749 SdHoareTripleChecker+Valid, 1333 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 81 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:06:13,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [749 Valid, 1333 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 181 Invalid, 0 Unknown, 81 Unchecked, 0.3s Time] [2022-11-02 21:06:13,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2658 states. [2022-11-02 21:06:13,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2658 to 1584. [2022-11-02 21:06:13,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1584 states, 1583 states have (on average 1.3973468098547062) internal successors, (2212), 1583 states have internal predecessors, (2212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:13,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 2212 transitions. [2022-11-02 21:06:13,585 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 2212 transitions. Word has length 127 [2022-11-02 21:06:13,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:06:13,586 INFO L495 AbstractCegarLoop]: Abstraction has 1584 states and 2212 transitions. [2022-11-02 21:06:13,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 16.0) internal successors, (208), 13 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:13,586 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 2212 transitions. [2022-11-02 21:06:13,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-02 21:06:13,588 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:06:13,590 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:06:13,609 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-11-02 21:06:13,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:06:13,805 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:06:13,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:06:13,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1793369539, now seen corresponding path program 1 times [2022-11-02 21:06:13,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:06:13,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [266259923] [2022-11-02 21:06:13,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:06:13,807 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:06:13,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:06:13,808 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:06:13,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-02 21:06:14,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:06:14,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 660 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-02 21:06:14,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:06:14,977 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-02 21:06:14,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:06:17,513 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 12 proven. 20 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-02 21:06:17,513 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:06:17,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [266259923] [2022-11-02 21:06:17,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [266259923] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:06:17,514 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:06:17,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-11-02 21:06:17,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518557776] [2022-11-02 21:06:17,515 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:06:17,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-02 21:06:17,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:06:17,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-02 21:06:17,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=471, Unknown=0, NotChecked=0, Total=552 [2022-11-02 21:06:17,517 INFO L87 Difference]: Start difference. First operand 1584 states and 2212 transitions. Second operand has 24 states, 24 states have (on average 8.25) internal successors, (198), 24 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:19,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:06:19,258 INFO L93 Difference]: Finished difference Result 6460 states and 8996 transitions. [2022-11-02 21:06:19,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-02 21:06:19,259 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 8.25) internal successors, (198), 24 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2022-11-02 21:06:19,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:06:19,279 INFO L225 Difference]: With dead ends: 6460 [2022-11-02 21:06:19,280 INFO L226 Difference]: Without dead ends: 6458 [2022-11-02 21:06:19,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 573 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=648, Invalid=2322, Unknown=0, NotChecked=0, Total=2970 [2022-11-02 21:06:19,283 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 892 mSDsluCounter, 2724 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 892 SdHoareTripleChecker+Valid, 2953 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 358 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:06:19,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [892 Valid, 2953 Invalid, 691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 311 Invalid, 0 Unknown, 358 Unchecked, 0.5s Time] [2022-11-02 21:06:19,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6458 states. [2022-11-02 21:06:19,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6458 to 2288. [2022-11-02 21:06:19,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2288 states, 2287 states have (on average 1.3974639265413205) internal successors, (3196), 2287 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:19,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2288 states to 2288 states and 3196 transitions. [2022-11-02 21:06:19,391 INFO L78 Accepts]: Start accepts. Automaton has 2288 states and 3196 transitions. Word has length 127 [2022-11-02 21:06:19,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:06:19,392 INFO L495 AbstractCegarLoop]: Abstraction has 2288 states and 3196 transitions. [2022-11-02 21:06:19,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 8.25) internal successors, (198), 24 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:19,392 INFO L276 IsEmpty]: Start isEmpty. Operand 2288 states and 3196 transitions. [2022-11-02 21:06:19,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-02 21:06:19,394 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:06:19,394 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:06:19,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-11-02 21:06:19,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:06:19,611 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:06:19,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:06:19,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1091769665, now seen corresponding path program 1 times [2022-11-02 21:06:19,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:06:19,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1884119940] [2022-11-02 21:06:19,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:06:19,612 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:06:19,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:06:19,614 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:06:19,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-02 21:06:19,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:06:19,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 660 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 21:06:19,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:06:20,346 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 31 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-02 21:06:20,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:06:20,705 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 31 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:06:20,706 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:06:20,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1884119940] [2022-11-02 21:06:20,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1884119940] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:06:20,706 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:06:20,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2022-11-02 21:06:20,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318135430] [2022-11-02 21:06:20,707 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:06:20,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-02 21:06:20,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:06:20,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-02 21:06:20,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-11-02 21:06:20,708 INFO L87 Difference]: Start difference. First operand 2288 states and 3196 transitions. Second operand has 13 states, 13 states have (on average 15.153846153846153) internal successors, (197), 13 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:21,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:06:21,020 INFO L93 Difference]: Finished difference Result 4972 states and 6975 transitions. [2022-11-02 21:06:21,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 21:06:21,020 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 15.153846153846153) internal successors, (197), 13 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2022-11-02 21:06:21,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:06:21,028 INFO L225 Difference]: With dead ends: 4972 [2022-11-02 21:06:21,028 INFO L226 Difference]: Without dead ends: 2720 [2022-11-02 21:06:21,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2022-11-02 21:06:21,031 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 694 mSDsluCounter, 729 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 694 SdHoareTripleChecker+Valid, 844 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 63 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:06:21,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [694 Valid, 844 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 117 Invalid, 0 Unknown, 63 Unchecked, 0.2s Time] [2022-11-02 21:06:21,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2720 states. [2022-11-02 21:06:21,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2720 to 1968. [2022-11-02 21:06:21,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1968 states, 1967 states have (on average 1.380274529740722) internal successors, (2715), 1967 states have internal predecessors, (2715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:21,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1968 states to 1968 states and 2715 transitions. [2022-11-02 21:06:21,097 INFO L78 Accepts]: Start accepts. Automaton has 1968 states and 2715 transitions. Word has length 127 [2022-11-02 21:06:21,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:06:21,097 INFO L495 AbstractCegarLoop]: Abstraction has 1968 states and 2715 transitions. [2022-11-02 21:06:21,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 15.153846153846153) internal successors, (197), 13 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:21,098 INFO L276 IsEmpty]: Start isEmpty. Operand 1968 states and 2715 transitions. [2022-11-02 21:06:21,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:06:21,116 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:06:21,117 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:06:21,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-11-02 21:06:21,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:06:21,330 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:06:21,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:06:21,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1481567133, now seen corresponding path program 1 times [2022-11-02 21:06:21,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:06:21,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1545161875] [2022-11-02 21:06:21,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:06:21,332 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:06:21,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:06:21,333 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:06:21,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-02 21:06:21,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:06:21,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 949 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-02 21:06:21,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:06:22,345 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 100 proven. 66 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-02 21:06:22,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:06:23,292 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 100 proven. 66 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-02 21:06:23,292 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:06:23,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1545161875] [2022-11-02 21:06:23,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1545161875] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:06:23,293 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:06:23,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 30 [2022-11-02 21:06:23,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082821646] [2022-11-02 21:06:23,294 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:06:23,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-02 21:06:23,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:06:23,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-02 21:06:23,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=800, Unknown=0, NotChecked=0, Total=870 [2022-11-02 21:06:23,296 INFO L87 Difference]: Start difference. First operand 1968 states and 2715 transitions. Second operand has 30 states, 30 states have (on average 9.266666666666667) internal successors, (278), 30 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:26,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:06:26,661 INFO L93 Difference]: Finished difference Result 18823 states and 26597 transitions. [2022-11-02 21:06:26,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-11-02 21:06:26,667 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 9.266666666666667) internal successors, (278), 30 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:06:26,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:06:26,716 INFO L225 Difference]: With dead ends: 18823 [2022-11-02 21:06:26,716 INFO L226 Difference]: Without dead ends: 17987 [2022-11-02 21:06:26,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2671 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1797, Invalid=8505, Unknown=0, NotChecked=0, Total=10302 [2022-11-02 21:06:26,722 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 3264 mSDsluCounter, 4828 mSDsCounter, 0 mSdLazyCounter, 641 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3264 SdHoareTripleChecker+Valid, 5080 SdHoareTripleChecker+Invalid, 1748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1018 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 21:06:26,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3264 Valid, 5080 Invalid, 1748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 641 Invalid, 0 Unknown, 1018 Unchecked, 0.7s Time] [2022-11-02 21:06:26,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17987 states. [2022-11-02 21:06:26,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17987 to 3254. [2022-11-02 21:06:26,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3254 states, 3253 states have (on average 1.384260682446972) internal successors, (4503), 3253 states have internal predecessors, (4503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:26,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3254 states to 3254 states and 4503 transitions. [2022-11-02 21:06:26,991 INFO L78 Accepts]: Start accepts. Automaton has 3254 states and 4503 transitions. Word has length 188 [2022-11-02 21:06:26,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:06:26,992 INFO L495 AbstractCegarLoop]: Abstraction has 3254 states and 4503 transitions. [2022-11-02 21:06:26,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 9.266666666666667) internal successors, (278), 30 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:26,992 INFO L276 IsEmpty]: Start isEmpty. Operand 3254 states and 4503 transitions. [2022-11-02 21:06:26,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:06:26,999 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:06:27,000 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:06:27,016 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (30)] Ended with exit code 0 [2022-11-02 21:06:27,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:06:27,216 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:06:27,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:06:27,216 INFO L85 PathProgramCache]: Analyzing trace with hash 784814053, now seen corresponding path program 1 times [2022-11-02 21:06:27,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:06:27,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [549422457] [2022-11-02 21:06:27,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:06:27,217 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:06:27,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:06:27,218 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:06:27,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-02 21:06:27,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:06:27,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 949 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-02 21:06:27,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:06:28,534 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 76 proven. 90 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-02 21:06:28,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:06:29,219 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 76 proven. 90 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-02 21:06:29,219 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:06:29,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [549422457] [2022-11-02 21:06:29,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [549422457] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:06:29,219 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:06:29,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 30 [2022-11-02 21:06:29,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389124104] [2022-11-02 21:06:29,220 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:06:29,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-02 21:06:29,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:06:29,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-02 21:06:29,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=800, Unknown=0, NotChecked=0, Total=870 [2022-11-02 21:06:29,222 INFO L87 Difference]: Start difference. First operand 3254 states and 4503 transitions. Second operand has 30 states, 30 states have (on average 9.8) internal successors, (294), 30 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:32,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:06:32,373 INFO L93 Difference]: Finished difference Result 14408 states and 20058 transitions. [2022-11-02 21:06:32,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-11-02 21:06:32,374 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 9.8) internal successors, (294), 30 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:06:32,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:06:32,394 INFO L225 Difference]: With dead ends: 14408 [2022-11-02 21:06:32,395 INFO L226 Difference]: Without dead ends: 12810 [2022-11-02 21:06:32,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 346 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1611 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1273, Invalid=6383, Unknown=0, NotChecked=0, Total=7656 [2022-11-02 21:06:32,400 INFO L413 NwaCegarLoop]: 321 mSDtfsCounter, 2420 mSDsluCounter, 5406 mSDsCounter, 0 mSdLazyCounter, 1240 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2420 SdHoareTripleChecker+Valid, 5727 SdHoareTripleChecker+Invalid, 1308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:06:32,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2420 Valid, 5727 Invalid, 1308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1240 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-02 21:06:32,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12810 states. [2022-11-02 21:06:32,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12810 to 3358. [2022-11-02 21:06:32,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3358 states, 3357 states have (on average 1.3830801310694072) internal successors, (4643), 3357 states have internal predecessors, (4643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:32,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3358 states to 3358 states and 4643 transitions. [2022-11-02 21:06:32,529 INFO L78 Accepts]: Start accepts. Automaton has 3358 states and 4643 transitions. Word has length 188 [2022-11-02 21:06:32,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:06:32,530 INFO L495 AbstractCegarLoop]: Abstraction has 3358 states and 4643 transitions. [2022-11-02 21:06:32,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 9.8) internal successors, (294), 30 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:32,530 INFO L276 IsEmpty]: Start isEmpty. Operand 3358 states and 4643 transitions. [2022-11-02 21:06:32,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:06:32,537 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:06:32,538 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:06:32,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-11-02 21:06:32,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:06:32,750 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:06:32,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:06:32,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1060553113, now seen corresponding path program 1 times [2022-11-02 21:06:32,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:06:32,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1848552574] [2022-11-02 21:06:32,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:06:32,752 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:06:32,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:06:32,753 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:06:32,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-02 21:06:33,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:06:33,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 949 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-02 21:06:33,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:06:34,392 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 68 proven. 98 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-02 21:06:34,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:06:36,786 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 68 proven. 98 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-02 21:06:36,787 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:06:36,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1848552574] [2022-11-02 21:06:36,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1848552574] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:06:36,787 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:06:36,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 30 [2022-11-02 21:06:36,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854994545] [2022-11-02 21:06:36,788 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:06:36,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-02 21:06:36,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:06:36,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-02 21:06:36,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=800, Unknown=0, NotChecked=0, Total=870 [2022-11-02 21:06:36,789 INFO L87 Difference]: Start difference. First operand 3358 states and 4643 transitions. Second operand has 30 states, 30 states have (on average 9.266666666666667) internal successors, (278), 30 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:42,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:06:42,929 INFO L93 Difference]: Finished difference Result 20745 states and 29262 transitions. [2022-11-02 21:06:42,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-11-02 21:06:42,930 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 9.266666666666667) internal successors, (278), 30 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:06:42,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:06:42,948 INFO L225 Difference]: With dead ends: 20745 [2022-11-02 21:06:42,949 INFO L226 Difference]: Without dead ends: 19043 [2022-11-02 21:06:42,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3504 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=1816, Invalid=11524, Unknown=0, NotChecked=0, Total=13340 [2022-11-02 21:06:42,955 INFO L413 NwaCegarLoop]: 651 mSDtfsCounter, 2401 mSDsluCounter, 12902 mSDsCounter, 0 mSdLazyCounter, 1353 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2401 SdHoareTripleChecker+Valid, 13553 SdHoareTripleChecker+Invalid, 3202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1791 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:06:42,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2401 Valid, 13553 Invalid, 3202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1353 Invalid, 0 Unknown, 1791 Unchecked, 1.5s Time] [2022-11-02 21:06:42,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19043 states. [2022-11-02 21:06:43,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19043 to 3422. [2022-11-02 21:06:43,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3422 states, 3421 states have (on average 1.3805904706226249) internal successors, (4723), 3421 states have internal predecessors, (4723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:43,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3422 states to 3422 states and 4723 transitions. [2022-11-02 21:06:43,105 INFO L78 Accepts]: Start accepts. Automaton has 3422 states and 4723 transitions. Word has length 188 [2022-11-02 21:06:43,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:06:43,106 INFO L495 AbstractCegarLoop]: Abstraction has 3422 states and 4723 transitions. [2022-11-02 21:06:43,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 9.266666666666667) internal successors, (278), 30 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:43,106 INFO L276 IsEmpty]: Start isEmpty. Operand 3422 states and 4723 transitions. [2022-11-02 21:06:43,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:06:43,113 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:06:43,113 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:06:43,135 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-11-02 21:06:43,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:06:43,326 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:06:43,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:06:43,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1904558615, now seen corresponding path program 1 times [2022-11-02 21:06:43,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:06:43,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [986196914] [2022-11-02 21:06:43,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:06:43,328 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:06:43,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:06:43,328 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:06:43,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-11-02 21:06:43,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:06:43,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 949 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-02 21:06:43,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:06:44,431 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 44 proven. 122 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-02 21:06:44,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:06:45,455 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 44 proven. 122 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-02 21:06:45,455 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:06:45,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [986196914] [2022-11-02 21:06:45,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [986196914] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:06:45,456 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:06:45,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 30 [2022-11-02 21:06:45,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36993393] [2022-11-02 21:06:45,457 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:06:45,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-02 21:06:45,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:06:45,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-02 21:06:45,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=800, Unknown=0, NotChecked=0, Total=870 [2022-11-02 21:06:45,460 INFO L87 Difference]: Start difference. First operand 3422 states and 4723 transitions. Second operand has 30 states, 30 states have (on average 10.266666666666667) internal successors, (308), 30 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:49,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:06:49,794 INFO L93 Difference]: Finished difference Result 17113 states and 23918 transitions. [2022-11-02 21:06:49,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2022-11-02 21:06:49,794 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 10.266666666666667) internal successors, (308), 30 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:06:49,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:06:49,812 INFO L225 Difference]: With dead ends: 17113 [2022-11-02 21:06:49,812 INFO L226 Difference]: Without dead ends: 15347 [2022-11-02 21:06:49,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 475 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5158 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=2050, Invalid=14720, Unknown=0, NotChecked=0, Total=16770 [2022-11-02 21:06:49,820 INFO L413 NwaCegarLoop]: 320 mSDtfsCounter, 2827 mSDsluCounter, 6820 mSDsCounter, 0 mSdLazyCounter, 745 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2827 SdHoareTripleChecker+Valid, 7140 SdHoareTripleChecker+Invalid, 2196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1369 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 21:06:49,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2827 Valid, 7140 Invalid, 2196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 745 Invalid, 0 Unknown, 1369 Unchecked, 0.8s Time] [2022-11-02 21:06:49,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15347 states. [2022-11-02 21:06:49,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15347 to 3742. [2022-11-02 21:06:49,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3742 states, 3741 states have (on average 1.3822507350975675) internal successors, (5171), 3741 states have internal predecessors, (5171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:49,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3742 states to 3742 states and 5171 transitions. [2022-11-02 21:06:49,966 INFO L78 Accepts]: Start accepts. Automaton has 3742 states and 5171 transitions. Word has length 188 [2022-11-02 21:06:49,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:06:49,967 INFO L495 AbstractCegarLoop]: Abstraction has 3742 states and 5171 transitions. [2022-11-02 21:06:49,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 10.266666666666667) internal successors, (308), 30 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:49,967 INFO L276 IsEmpty]: Start isEmpty. Operand 3742 states and 5171 transitions. [2022-11-02 21:06:49,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:06:49,976 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:06:49,976 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:06:50,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-11-02 21:06:50,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:06:50,195 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:06:50,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:06:50,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1007672173, now seen corresponding path program 1 times [2022-11-02 21:06:50,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:06:50,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1373734965] [2022-11-02 21:06:50,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:06:50,196 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:06:50,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:06:50,197 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:06:50,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-02 21:06:50,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:06:50,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 949 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 21:06:50,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:06:50,952 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 40 proven. 148 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:06:50,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:06:51,024 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-11-02 21:06:51,024 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:06:51,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1373734965] [2022-11-02 21:06:51,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1373734965] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 21:06:51,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:06:51,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-11-02 21:06:51,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137297036] [2022-11-02 21:06:51,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:06:51,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:06:51,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:06:51,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:06:51,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-11-02 21:06:51,027 INFO L87 Difference]: Start difference. First operand 3742 states and 5171 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:51,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:06:51,153 INFO L93 Difference]: Finished difference Result 6532 states and 9103 transitions. [2022-11-02 21:06:51,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:06:51,154 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:06:51,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:06:51,159 INFO L225 Difference]: With dead ends: 6532 [2022-11-02 21:06:51,159 INFO L226 Difference]: Without dead ends: 4174 [2022-11-02 21:06:51,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 366 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-11-02 21:06:51,162 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 215 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:06:51,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 521 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:06:51,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4174 states. [2022-11-02 21:06:51,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4174 to 2634. [2022-11-02 21:06:51,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2634 states, 2633 states have (on average 1.3615647550322825) internal successors, (3585), 2633 states have internal predecessors, (3585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:51,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2634 states to 2634 states and 3585 transitions. [2022-11-02 21:06:51,230 INFO L78 Accepts]: Start accepts. Automaton has 2634 states and 3585 transitions. Word has length 188 [2022-11-02 21:06:51,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:06:51,230 INFO L495 AbstractCegarLoop]: Abstraction has 2634 states and 3585 transitions. [2022-11-02 21:06:51,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:51,231 INFO L276 IsEmpty]: Start isEmpty. Operand 2634 states and 3585 transitions. [2022-11-02 21:06:51,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:06:51,235 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:06:51,236 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:06:51,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2022-11-02 21:06:51,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:06:51,452 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:06:51,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:06:51,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1286570221, now seen corresponding path program 1 times [2022-11-02 21:06:51,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:06:51,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1287274173] [2022-11-02 21:06:51,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:06:51,453 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:06:51,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:06:51,455 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:06:51,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-11-02 21:06:51,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:06:51,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 949 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-02 21:06:51,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:06:52,495 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 60 proven. 106 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-02 21:06:52,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:06:53,427 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 60 proven. 106 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-02 21:06:53,427 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:06:53,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1287274173] [2022-11-02 21:06:53,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1287274173] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:06:53,428 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:06:53,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 30 [2022-11-02 21:06:53,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729570772] [2022-11-02 21:06:53,428 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:06:53,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-02 21:06:53,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:06:53,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-02 21:06:53,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=799, Unknown=0, NotChecked=0, Total=870 [2022-11-02 21:06:53,430 INFO L87 Difference]: Start difference. First operand 2634 states and 3585 transitions. Second operand has 30 states, 30 states have (on average 10.3) internal successors, (309), 30 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:56,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:06:56,988 INFO L93 Difference]: Finished difference Result 11241 states and 15286 transitions. [2022-11-02 21:06:56,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-11-02 21:06:56,989 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 10.3) internal successors, (309), 30 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:06:56,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:06:56,995 INFO L225 Difference]: With dead ends: 11241 [2022-11-02 21:06:56,995 INFO L226 Difference]: Without dead ends: 9799 [2022-11-02 21:06:56,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 346 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3582 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1742, Invalid=11368, Unknown=0, NotChecked=0, Total=13110 [2022-11-02 21:06:56,998 INFO L413 NwaCegarLoop]: 342 mSDtfsCounter, 2786 mSDsluCounter, 5760 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2786 SdHoareTripleChecker+Valid, 6102 SdHoareTripleChecker+Invalid, 1756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1188 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 21:06:56,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2786 Valid, 6102 Invalid, 1756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 467 Invalid, 0 Unknown, 1188 Unchecked, 0.6s Time] [2022-11-02 21:06:57,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9799 states. [2022-11-02 21:06:57,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9799 to 2506. [2022-11-02 21:06:57,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2506 states, 2505 states have (on average 1.354491017964072) internal successors, (3393), 2505 states have internal predecessors, (3393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:57,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2506 states to 2506 states and 3393 transitions. [2022-11-02 21:06:57,096 INFO L78 Accepts]: Start accepts. Automaton has 2506 states and 3393 transitions. Word has length 188 [2022-11-02 21:06:57,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:06:57,097 INFO L495 AbstractCegarLoop]: Abstraction has 2506 states and 3393 transitions. [2022-11-02 21:06:57,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 10.3) internal successors, (309), 30 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:57,097 INFO L276 IsEmpty]: Start isEmpty. Operand 2506 states and 3393 transitions. [2022-11-02 21:06:57,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:06:57,102 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:06:57,102 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:06:57,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2022-11-02 21:06:57,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:06:57,320 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:06:57,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:06:57,321 INFO L85 PathProgramCache]: Analyzing trace with hash 935285615, now seen corresponding path program 2 times [2022-11-02 21:06:57,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:06:57,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1461852903] [2022-11-02 21:06:57,322 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:06:57,322 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:06:57,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:06:57,324 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:06:57,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-11-02 21:06:57,640 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 21:06:57,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:06:57,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 949 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-02 21:06:57,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:06:58,257 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 36 proven. 99 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-02 21:06:58,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:06:58,893 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 126 proven. 9 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-02 21:06:58,893 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:06:58,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1461852903] [2022-11-02 21:06:58,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1461852903] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:06:58,894 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:06:58,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 24 [2022-11-02 21:06:58,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808088222] [2022-11-02 21:06:58,894 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:06:58,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-02 21:06:58,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:06:58,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-02 21:06:58,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=495, Unknown=0, NotChecked=0, Total=552 [2022-11-02 21:06:58,896 INFO L87 Difference]: Start difference. First operand 2506 states and 3393 transitions. Second operand has 24 states, 24 states have (on average 9.375) internal successors, (225), 24 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:00,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:00,766 INFO L93 Difference]: Finished difference Result 16197 states and 22069 transitions. [2022-11-02 21:07:00,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-11-02 21:07:00,766 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 9.375) internal successors, (225), 24 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:07:00,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:00,776 INFO L225 Difference]: With dead ends: 16197 [2022-11-02 21:07:00,776 INFO L226 Difference]: Without dead ends: 14974 [2022-11-02 21:07:00,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 350 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 905 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=942, Invalid=3218, Unknown=0, NotChecked=0, Total=4160 [2022-11-02 21:07:00,779 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 1945 mSDsluCounter, 3005 mSDsCounter, 0 mSdLazyCounter, 731 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1945 SdHoareTripleChecker+Valid, 3138 SdHoareTripleChecker+Invalid, 806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:00,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1945 Valid, 3138 Invalid, 806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 731 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-02 21:07:00,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14974 states. [2022-11-02 21:07:00,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14974 to 2556. [2022-11-02 21:07:00,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2556 states, 2555 states have (on average 1.3553816046966731) internal successors, (3463), 2555 states have internal predecessors, (3463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:00,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2556 states to 2556 states and 3463 transitions. [2022-11-02 21:07:00,900 INFO L78 Accepts]: Start accepts. Automaton has 2556 states and 3463 transitions. Word has length 188 [2022-11-02 21:07:00,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:00,901 INFO L495 AbstractCegarLoop]: Abstraction has 2556 states and 3463 transitions. [2022-11-02 21:07:00,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 9.375) internal successors, (225), 24 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:00,902 INFO L276 IsEmpty]: Start isEmpty. Operand 2556 states and 3463 transitions. [2022-11-02 21:07:00,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:07:00,906 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:00,907 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:00,923 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (36)] Ended with exit code 0 [2022-11-02 21:07:01,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:07:01,123 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:01,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:01,124 INFO L85 PathProgramCache]: Analyzing trace with hash -753658127, now seen corresponding path program 1 times [2022-11-02 21:07:01,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:07:01,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [212809955] [2022-11-02 21:07:01,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:01,125 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:07:01,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:07:01,129 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:07:01,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-11-02 21:07:01,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:01,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 949 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-02 21:07:01,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:02,408 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 16 proven. 150 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-02 21:07:02,408 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:07:03,163 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 16 proven. 150 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-02 21:07:03,164 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:07:03,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [212809955] [2022-11-02 21:07:03,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [212809955] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:07:03,164 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:07:03,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 30 [2022-11-02 21:07:03,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136529705] [2022-11-02 21:07:03,164 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:07:03,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-02 21:07:03,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:07:03,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-02 21:07:03,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=800, Unknown=0, NotChecked=0, Total=870 [2022-11-02 21:07:03,166 INFO L87 Difference]: Start difference. First operand 2556 states and 3463 transitions. Second operand has 30 states, 30 states have (on average 10.8) internal successors, (324), 30 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:08,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:08,559 INFO L93 Difference]: Finished difference Result 18752 states and 25651 transitions. [2022-11-02 21:07:08,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2022-11-02 21:07:08,560 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 10.8) internal successors, (324), 30 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:07:08,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:08,575 INFO L225 Difference]: With dead ends: 18752 [2022-11-02 21:07:08,575 INFO L226 Difference]: Without dead ends: 17414 [2022-11-02 21:07:08,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 346 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4855 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=2610, Invalid=14160, Unknown=0, NotChecked=0, Total=16770 [2022-11-02 21:07:08,581 INFO L413 NwaCegarLoop]: 479 mSDtfsCounter, 2276 mSDsluCounter, 7388 mSDsCounter, 0 mSdLazyCounter, 1867 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2276 SdHoareTripleChecker+Valid, 7867 SdHoareTripleChecker+Invalid, 1934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:08,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2276 Valid, 7867 Invalid, 1934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1867 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-02 21:07:08,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17414 states. [2022-11-02 21:07:08,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17414 to 2716. [2022-11-02 21:07:08,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2716 states, 2715 states have (on average 1.3521178637200737) internal successors, (3671), 2715 states have internal predecessors, (3671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:08,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2716 states to 2716 states and 3671 transitions. [2022-11-02 21:07:08,749 INFO L78 Accepts]: Start accepts. Automaton has 2716 states and 3671 transitions. Word has length 188 [2022-11-02 21:07:08,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:08,749 INFO L495 AbstractCegarLoop]: Abstraction has 2716 states and 3671 transitions. [2022-11-02 21:07:08,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 10.8) internal successors, (324), 30 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:08,750 INFO L276 IsEmpty]: Start isEmpty. Operand 2716 states and 3671 transitions. [2022-11-02 21:07:08,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:07:08,754 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:08,755 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:08,771 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:08,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:07:08,971 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:08,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:08,972 INFO L85 PathProgramCache]: Analyzing trace with hash -73599757, now seen corresponding path program 1 times [2022-11-02 21:07:08,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:07:08,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1249230469] [2022-11-02 21:07:08,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:08,973 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:07:08,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:07:08,974 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:07:08,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-11-02 21:07:09,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:09,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 949 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-02 21:07:09,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:10,178 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 12 proven. 154 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-02 21:07:10,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:07:11,256 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 12 proven. 154 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-02 21:07:11,256 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:07:11,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1249230469] [2022-11-02 21:07:11,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1249230469] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:07:11,257 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:07:11,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 30 [2022-11-02 21:07:11,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218628873] [2022-11-02 21:07:11,257 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:07:11,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-02 21:07:11,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:07:11,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-02 21:07:11,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=800, Unknown=0, NotChecked=0, Total=870 [2022-11-02 21:07:11,259 INFO L87 Difference]: Start difference. First operand 2716 states and 3671 transitions. Second operand has 30 states, 30 states have (on average 10.666666666666666) internal successors, (320), 30 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:14,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:14,089 INFO L93 Difference]: Finished difference Result 12287 states and 17052 transitions. [2022-11-02 21:07:14,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-11-02 21:07:14,090 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 10.666666666666666) internal successors, (320), 30 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:07:14,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:14,095 INFO L225 Difference]: With dead ends: 12287 [2022-11-02 21:07:14,095 INFO L226 Difference]: Without dead ends: 10789 [2022-11-02 21:07:14,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 346 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2301 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1175, Invalid=8137, Unknown=0, NotChecked=0, Total=9312 [2022-11-02 21:07:14,099 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 2163 mSDsluCounter, 4802 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2163 SdHoareTripleChecker+Valid, 5082 SdHoareTripleChecker+Invalid, 1322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 848 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:14,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2163 Valid, 5082 Invalid, 1322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 415 Invalid, 0 Unknown, 848 Unchecked, 0.4s Time] [2022-11-02 21:07:14,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10789 states. [2022-11-02 21:07:14,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10789 to 2720. [2022-11-02 21:07:14,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2720 states, 2719 states have (on average 1.351599852887091) internal successors, (3675), 2719 states have internal predecessors, (3675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:14,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2720 states to 2720 states and 3675 transitions. [2022-11-02 21:07:14,162 INFO L78 Accepts]: Start accepts. Automaton has 2720 states and 3675 transitions. Word has length 188 [2022-11-02 21:07:14,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:14,163 INFO L495 AbstractCegarLoop]: Abstraction has 2720 states and 3675 transitions. [2022-11-02 21:07:14,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 10.666666666666666) internal successors, (320), 30 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:14,163 INFO L276 IsEmpty]: Start isEmpty. Operand 2720 states and 3675 transitions. [2022-11-02 21:07:14,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:07:14,168 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:14,168 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:14,185 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:14,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:07:14,382 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:14,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:14,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1701407605, now seen corresponding path program 1 times [2022-11-02 21:07:14,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:07:14,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [822735729] [2022-11-02 21:07:14,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:14,384 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:07:14,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:07:14,385 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:07:14,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-11-02 21:07:14,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:14,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 949 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 21:07:14,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:15,093 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 8 proven. 180 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:07:15,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:07:15,164 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-11-02 21:07:15,164 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:07:15,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [822735729] [2022-11-02 21:07:15,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [822735729] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 21:07:15,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:07:15,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 10 [2022-11-02 21:07:15,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355676739] [2022-11-02 21:07:15,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:15,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:07:15,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:07:15,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:07:15,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:07:15,167 INFO L87 Difference]: Start difference. First operand 2720 states and 3675 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:15,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:15,293 INFO L93 Difference]: Finished difference Result 6755 states and 9191 transitions. [2022-11-02 21:07:15,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:07:15,293 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:07:15,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:15,297 INFO L225 Difference]: With dead ends: 6755 [2022-11-02 21:07:15,298 INFO L226 Difference]: Without dead ends: 4097 [2022-11-02 21:07:15,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 368 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-11-02 21:07:15,301 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 296 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:15,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 393 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:07:15,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4097 states. [2022-11-02 21:07:15,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4097 to 2339. [2022-11-02 21:07:15,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2339 states, 2338 states have (on average 1.353721129170231) internal successors, (3165), 2338 states have internal predecessors, (3165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:15,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2339 states to 2339 states and 3165 transitions. [2022-11-02 21:07:15,397 INFO L78 Accepts]: Start accepts. Automaton has 2339 states and 3165 transitions. Word has length 188 [2022-11-02 21:07:15,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:15,398 INFO L495 AbstractCegarLoop]: Abstraction has 2339 states and 3165 transitions. [2022-11-02 21:07:15,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:15,398 INFO L276 IsEmpty]: Start isEmpty. Operand 2339 states and 3165 transitions. [2022-11-02 21:07:15,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:07:15,404 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:15,404 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:15,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:15,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:07:15,628 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:15,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:15,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1703254647, now seen corresponding path program 2 times [2022-11-02 21:07:15,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:07:15,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1546350043] [2022-11-02 21:07:15,630 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:07:15,630 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:07:15,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:07:15,631 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:07:15,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-11-02 21:07:15,948 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 21:07:15,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:07:15,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 949 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-02 21:07:15,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:17,498 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 166 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-02 21:07:17,498 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:07:21,444 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 166 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-02 21:07:21,444 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:07:21,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1546350043] [2022-11-02 21:07:21,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1546350043] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:07:21,445 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:07:21,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 38 [2022-11-02 21:07:21,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264522826] [2022-11-02 21:07:21,445 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:07:21,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-02 21:07:21,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:07:21,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-02 21:07:21,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1306, Unknown=0, NotChecked=0, Total=1406 [2022-11-02 21:07:21,447 INFO L87 Difference]: Start difference. First operand 2339 states and 3165 transitions. Second operand has 38 states, 38 states have (on average 8.894736842105264) internal successors, (338), 38 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:27,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:27,544 INFO L93 Difference]: Finished difference Result 12159 states and 16784 transitions. [2022-11-02 21:07:27,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-11-02 21:07:27,545 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 8.894736842105264) internal successors, (338), 38 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:07:27,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:27,555 INFO L225 Difference]: With dead ends: 12159 [2022-11-02 21:07:27,555 INFO L226 Difference]: Without dead ends: 12157 [2022-11-02 21:07:27,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3355 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=2771, Invalid=11991, Unknown=0, NotChecked=0, Total=14762 [2022-11-02 21:07:27,558 INFO L413 NwaCegarLoop]: 499 mSDtfsCounter, 1848 mSDsluCounter, 9973 mSDsCounter, 0 mSdLazyCounter, 851 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1848 SdHoareTripleChecker+Valid, 10472 SdHoareTripleChecker+Invalid, 2226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1313 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:27,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1848 Valid, 10472 Invalid, 2226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 851 Invalid, 0 Unknown, 1313 Unchecked, 1.1s Time] [2022-11-02 21:07:27,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12157 states. [2022-11-02 21:07:27,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12157 to 2469. [2022-11-02 21:07:27,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2469 states, 2468 states have (on average 1.3687196110210698) internal successors, (3378), 2468 states have internal predecessors, (3378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:27,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2469 states to 2469 states and 3378 transitions. [2022-11-02 21:07:27,672 INFO L78 Accepts]: Start accepts. Automaton has 2469 states and 3378 transitions. Word has length 188 [2022-11-02 21:07:27,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:27,673 INFO L495 AbstractCegarLoop]: Abstraction has 2469 states and 3378 transitions. [2022-11-02 21:07:27,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 8.894736842105264) internal successors, (338), 38 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:27,673 INFO L276 IsEmpty]: Start isEmpty. Operand 2469 states and 3378 transitions. [2022-11-02 21:07:27,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:07:27,677 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:27,677 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:27,695 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (40)] Ended with exit code 0 [2022-11-02 21:07:27,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:07:27,895 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:27,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:27,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1177152625, now seen corresponding path program 1 times [2022-11-02 21:07:27,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:07:27,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [624338503] [2022-11-02 21:07:27,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:27,896 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:07:27,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:07:27,897 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:07:27,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2022-11-02 21:07:28,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:28,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 949 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 21:07:28,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:28,510 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 126 proven. 44 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-02 21:07:28,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:07:28,547 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-11-02 21:07:28,547 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:07:28,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [624338503] [2022-11-02 21:07:28,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [624338503] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 21:07:28,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:07:28,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 10 [2022-11-02 21:07:28,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043769792] [2022-11-02 21:07:28,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:28,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:07:28,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:07:28,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:07:28,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:07:28,549 INFO L87 Difference]: Start difference. First operand 2469 states and 3378 transitions. Second operand has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:28,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:28,671 INFO L93 Difference]: Finished difference Result 5019 states and 6963 transitions. [2022-11-02 21:07:28,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:07:28,672 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:07:28,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:28,675 INFO L225 Difference]: With dead ends: 5019 [2022-11-02 21:07:28,675 INFO L226 Difference]: Without dead ends: 2781 [2022-11-02 21:07:28,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 368 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-11-02 21:07:28,678 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 286 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:28,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [286 Valid, 350 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:07:28,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2781 states. [2022-11-02 21:07:28,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2781 to 2097. [2022-11-02 21:07:28,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2097 states, 2096 states have (on average 1.3592557251908397) internal successors, (2849), 2096 states have internal predecessors, (2849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:28,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2097 states to 2097 states and 2849 transitions. [2022-11-02 21:07:28,758 INFO L78 Accepts]: Start accepts. Automaton has 2097 states and 2849 transitions. Word has length 188 [2022-11-02 21:07:28,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:28,758 INFO L495 AbstractCegarLoop]: Abstraction has 2097 states and 2849 transitions. [2022-11-02 21:07:28,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:28,759 INFO L276 IsEmpty]: Start isEmpty. Operand 2097 states and 2849 transitions. [2022-11-02 21:07:28,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:07:28,763 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:28,763 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:28,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:28,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:07:28,966 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:28,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:28,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1273014109, now seen corresponding path program 1 times [2022-11-02 21:07:28,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:07:28,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [840716332] [2022-11-02 21:07:28,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:28,969 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:07:28,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:07:28,970 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:07:28,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2022-11-02 21:07:29,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:29,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 949 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 21:07:29,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:29,690 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 126 proven. 26 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-02 21:07:29,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:07:29,986 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 126 proven. 26 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-02 21:07:29,986 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:07:29,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [840716332] [2022-11-02 21:07:29,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [840716332] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:07:29,986 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:07:29,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-02 21:07:29,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078640621] [2022-11-02 21:07:29,987 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:07:29,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-02 21:07:29,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:07:29,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-02 21:07:29,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:07:29,988 INFO L87 Difference]: Start difference. First operand 2097 states and 2849 transitions. Second operand has 16 states, 16 states have (on average 15.25) internal successors, (244), 16 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:30,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:30,540 INFO L93 Difference]: Finished difference Result 5452 states and 7450 transitions. [2022-11-02 21:07:30,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:07:30,541 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 15.25) internal successors, (244), 16 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:07:30,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:30,544 INFO L225 Difference]: With dead ends: 5452 [2022-11-02 21:07:30,545 INFO L226 Difference]: Without dead ends: 3383 [2022-11-02 21:07:30,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 360 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=161, Invalid=439, Unknown=0, NotChecked=0, Total=600 [2022-11-02 21:07:30,547 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 972 mSDsluCounter, 1359 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 1466 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:30,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [972 Valid, 1466 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:07:30,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3383 states. [2022-11-02 21:07:30,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3383 to 2097. [2022-11-02 21:07:30,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2097 states, 2096 states have (on average 1.3549618320610688) internal successors, (2840), 2096 states have internal predecessors, (2840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:30,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2097 states to 2097 states and 2840 transitions. [2022-11-02 21:07:30,594 INFO L78 Accepts]: Start accepts. Automaton has 2097 states and 2840 transitions. Word has length 188 [2022-11-02 21:07:30,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:30,594 INFO L495 AbstractCegarLoop]: Abstraction has 2097 states and 2840 transitions. [2022-11-02 21:07:30,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 15.25) internal successors, (244), 16 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:30,595 INFO L276 IsEmpty]: Start isEmpty. Operand 2097 states and 2840 transitions. [2022-11-02 21:07:30,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:07:30,598 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:30,598 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:30,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:30,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:07:30,808 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:30,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:30,808 INFO L85 PathProgramCache]: Analyzing trace with hash -742252253, now seen corresponding path program 1 times [2022-11-02 21:07:30,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:07:30,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1109850153] [2022-11-02 21:07:30,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:30,809 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:07:30,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:07:30,810 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:07:30,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2022-11-02 21:07:31,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:31,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 949 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:07:31,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:31,345 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 126 proven. 35 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-02 21:07:31,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:07:31,407 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 157 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-02 21:07:31,408 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:07:31,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1109850153] [2022-11-02 21:07:31,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1109850153] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 21:07:31,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:07:31,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2022-11-02 21:07:31,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703168975] [2022-11-02 21:07:31,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:31,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:07:31,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:07:31,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:07:31,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:07:31,410 INFO L87 Difference]: Start difference. First operand 2097 states and 2840 transitions. Second operand has 5 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:31,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:31,599 INFO L93 Difference]: Finished difference Result 8639 states and 11676 transitions. [2022-11-02 21:07:31,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:07:31,600 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:07:31,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:31,605 INFO L225 Difference]: With dead ends: 8639 [2022-11-02 21:07:31,606 INFO L226 Difference]: Without dead ends: 6592 [2022-11-02 21:07:31,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 370 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:07:31,610 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 236 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:31,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 661 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:07:31,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6592 states. [2022-11-02 21:07:31,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6592 to 3275. [2022-11-02 21:07:31,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3275 states, 3274 states have (on average 1.3466707391569945) internal successors, (4409), 3274 states have internal predecessors, (4409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:31,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3275 states to 3275 states and 4409 transitions. [2022-11-02 21:07:31,697 INFO L78 Accepts]: Start accepts. Automaton has 3275 states and 4409 transitions. Word has length 188 [2022-11-02 21:07:31,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:31,697 INFO L495 AbstractCegarLoop]: Abstraction has 3275 states and 4409 transitions. [2022-11-02 21:07:31,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:31,698 INFO L276 IsEmpty]: Start isEmpty. Operand 3275 states and 4409 transitions. [2022-11-02 21:07:31,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:07:31,702 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:31,702 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:31,725 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:31,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:07:31,919 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:31,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:31,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1023592287, now seen corresponding path program 1 times [2022-11-02 21:07:31,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:07:31,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1106864566] [2022-11-02 21:07:31,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:31,921 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:07:31,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:07:31,922 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:07:31,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2022-11-02 21:07:32,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:32,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 949 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-02 21:07:32,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:32,976 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 100 proven. 68 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-02 21:07:32,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:07:34,060 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 100 proven. 68 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-02 21:07:34,061 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:07:34,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1106864566] [2022-11-02 21:07:34,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1106864566] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:07:34,061 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:07:34,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 34 [2022-11-02 21:07:34,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264551114] [2022-11-02 21:07:34,062 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:07:34,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-02 21:07:34,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:07:34,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-02 21:07:34,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=1042, Unknown=0, NotChecked=0, Total=1122 [2022-11-02 21:07:34,064 INFO L87 Difference]: Start difference. First operand 3275 states and 4409 transitions. Second operand has 34 states, 34 states have (on average 8.294117647058824) internal successors, (282), 34 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:42,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:42,003 INFO L93 Difference]: Finished difference Result 21446 states and 29358 transitions. [2022-11-02 21:07:42,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2022-11-02 21:07:42,004 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 8.294117647058824) internal successors, (282), 34 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:07:42,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:42,014 INFO L225 Difference]: With dead ends: 21446 [2022-11-02 21:07:42,014 INFO L226 Difference]: Without dead ends: 18670 [2022-11-02 21:07:42,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 532 GetRequests, 343 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12813 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=6179, Invalid=30111, Unknown=0, NotChecked=0, Total=36290 [2022-11-02 21:07:42,019 INFO L413 NwaCegarLoop]: 626 mSDtfsCounter, 2437 mSDsluCounter, 13293 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2437 SdHoareTripleChecker+Valid, 13919 SdHoareTripleChecker+Invalid, 2403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1227 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:42,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2437 Valid, 13919 Invalid, 2403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1148 Invalid, 0 Unknown, 1227 Unchecked, 1.2s Time] [2022-11-02 21:07:42,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18670 states. [2022-11-02 21:07:42,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18670 to 3541. [2022-11-02 21:07:42,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3541 states, 3540 states have (on average 1.3491525423728814) internal successors, (4776), 3540 states have internal predecessors, (4776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:42,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3541 states to 3541 states and 4776 transitions. [2022-11-02 21:07:42,147 INFO L78 Accepts]: Start accepts. Automaton has 3541 states and 4776 transitions. Word has length 188 [2022-11-02 21:07:42,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:42,147 INFO L495 AbstractCegarLoop]: Abstraction has 3541 states and 4776 transitions. [2022-11-02 21:07:42,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 8.294117647058824) internal successors, (282), 34 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:42,148 INFO L276 IsEmpty]: Start isEmpty. Operand 3541 states and 4776 transitions. [2022-11-02 21:07:42,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:07:42,151 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:42,152 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:42,165 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:42,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:07:42,352 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:42,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:42,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1004993823, now seen corresponding path program 1 times [2022-11-02 21:07:42,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:07:42,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [793829671] [2022-11-02 21:07:42,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:42,354 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:07:42,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:07:42,359 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:07:42,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2022-11-02 21:07:42,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:42,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 949 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-02 21:07:42,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:43,612 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 76 proven. 92 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-02 21:07:43,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:07:44,491 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 76 proven. 92 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-02 21:07:44,491 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:07:44,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [793829671] [2022-11-02 21:07:44,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [793829671] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:07:44,491 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:07:44,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 34 [2022-11-02 21:07:44,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691837360] [2022-11-02 21:07:44,492 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:07:44,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-02 21:07:44,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:07:44,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-02 21:07:44,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=1042, Unknown=0, NotChecked=0, Total=1122 [2022-11-02 21:07:44,495 INFO L87 Difference]: Start difference. First operand 3541 states and 4776 transitions. Second operand has 34 states, 34 states have (on average 8.764705882352942) internal successors, (298), 34 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:49,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:49,912 INFO L93 Difference]: Finished difference Result 12417 states and 16949 transitions. [2022-11-02 21:07:49,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-11-02 21:07:49,913 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 8.764705882352942) internal successors, (298), 34 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:07:49,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:49,918 INFO L225 Difference]: With dead ends: 12417 [2022-11-02 21:07:49,918 INFO L226 Difference]: Without dead ends: 9381 [2022-11-02 21:07:49,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4174 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=2423, Invalid=13327, Unknown=0, NotChecked=0, Total=15750 [2022-11-02 21:07:49,922 INFO L413 NwaCegarLoop]: 533 mSDtfsCounter, 2766 mSDsluCounter, 8131 mSDsCounter, 0 mSdLazyCounter, 1801 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2766 SdHoareTripleChecker+Valid, 8664 SdHoareTripleChecker+Invalid, 1883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:49,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2766 Valid, 8664 Invalid, 1883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1801 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-02 21:07:49,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9381 states. [2022-11-02 21:07:50,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9381 to 3609. [2022-11-02 21:07:50,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3609 states, 3608 states have (on average 1.3475609756097562) internal successors, (4862), 3608 states have internal predecessors, (4862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:50,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3609 states to 3609 states and 4862 transitions. [2022-11-02 21:07:50,009 INFO L78 Accepts]: Start accepts. Automaton has 3609 states and 4862 transitions. Word has length 188 [2022-11-02 21:07:50,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:50,010 INFO L495 AbstractCegarLoop]: Abstraction has 3609 states and 4862 transitions. [2022-11-02 21:07:50,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 8.764705882352942) internal successors, (298), 34 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:50,010 INFO L276 IsEmpty]: Start isEmpty. Operand 3609 states and 4862 transitions. [2022-11-02 21:07:50,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:07:50,013 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:50,013 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:50,041 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (45)] Ended with exit code 0 [2022-11-02 21:07:50,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:07:50,214 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:50,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:50,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1444606307, now seen corresponding path program 1 times [2022-11-02 21:07:50,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:07:50,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1182023626] [2022-11-02 21:07:50,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:50,215 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:07:50,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:07:50,216 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:07:50,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2022-11-02 21:07:50,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:50,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 949 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-02 21:07:50,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:51,534 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 72 proven. 96 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-02 21:07:51,534 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:07:52,393 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 72 proven. 96 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-02 21:07:52,393 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:07:52,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1182023626] [2022-11-02 21:07:52,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1182023626] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:07:52,393 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:07:52,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 34 [2022-11-02 21:07:52,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920249103] [2022-11-02 21:07:52,394 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:07:52,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-02 21:07:52,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:07:52,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-02 21:07:52,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=1042, Unknown=0, NotChecked=0, Total=1122 [2022-11-02 21:07:52,395 INFO L87 Difference]: Start difference. First operand 3609 states and 4862 transitions. Second operand has 34 states, 34 states have (on average 8.647058823529411) internal successors, (294), 34 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:58,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:58,747 INFO L93 Difference]: Finished difference Result 13921 states and 18878 transitions. [2022-11-02 21:07:58,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2022-11-02 21:07:58,748 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 8.647058823529411) internal successors, (294), 34 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:07:58,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:07:58,755 INFO L225 Difference]: With dead ends: 13921 [2022-11-02 21:07:58,755 INFO L226 Difference]: Without dead ends: 10817 [2022-11-02 21:07:58,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6052 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=3302, Invalid=16438, Unknown=0, NotChecked=0, Total=19740 [2022-11-02 21:07:58,759 INFO L413 NwaCegarLoop]: 351 mSDtfsCounter, 3248 mSDsluCounter, 7475 mSDsCounter, 0 mSdLazyCounter, 1867 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3248 SdHoareTripleChecker+Valid, 7826 SdHoareTripleChecker+Invalid, 1979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-02 21:07:58,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3248 Valid, 7826 Invalid, 1979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1867 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-02 21:07:58,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10817 states. [2022-11-02 21:07:58,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10817 to 3641. [2022-11-02 21:07:58,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3641 states, 3640 states have (on average 1.3445054945054946) internal successors, (4894), 3640 states have internal predecessors, (4894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:58,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3641 states to 3641 states and 4894 transitions. [2022-11-02 21:07:58,898 INFO L78 Accepts]: Start accepts. Automaton has 3641 states and 4894 transitions. Word has length 188 [2022-11-02 21:07:58,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:07:58,898 INFO L495 AbstractCegarLoop]: Abstraction has 3641 states and 4894 transitions. [2022-11-02 21:07:58,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 8.647058823529411) internal successors, (294), 34 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:58,899 INFO L276 IsEmpty]: Start isEmpty. Operand 3641 states and 4894 transitions. [2022-11-02 21:07:58,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:07:58,902 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:07:58,902 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:58,921 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:59,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:07:59,103 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:07:59,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:59,103 INFO L85 PathProgramCache]: Analyzing trace with hash 2104137829, now seen corresponding path program 1 times [2022-11-02 21:07:59,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:07:59,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1965416539] [2022-11-02 21:07:59,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:59,104 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:07:59,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:07:59,105 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:07:59,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2022-11-02 21:07:59,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:59,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 949 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-02 21:07:59,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:00,320 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 44 proven. 124 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-02 21:08:00,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:08:01,485 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 44 proven. 124 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-02 21:08:01,485 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:01,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1965416539] [2022-11-02 21:08:01,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1965416539] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:08:01,486 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:08:01,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 34 [2022-11-02 21:08:01,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830816415] [2022-11-02 21:08:01,486 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:08:01,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-02 21:08:01,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:01,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-02 21:08:01,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=1042, Unknown=0, NotChecked=0, Total=1122 [2022-11-02 21:08:01,488 INFO L87 Difference]: Start difference. First operand 3641 states and 4894 transitions. Second operand has 34 states, 34 states have (on average 9.176470588235293) internal successors, (312), 34 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:08,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:08,447 INFO L93 Difference]: Finished difference Result 18453 states and 24924 transitions. [2022-11-02 21:08:08,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2022-11-02 21:08:08,447 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 9.176470588235293) internal successors, (312), 34 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:08:08,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:08,455 INFO L225 Difference]: With dead ends: 18453 [2022-11-02 21:08:08,455 INFO L226 Difference]: Without dead ends: 15317 [2022-11-02 21:08:08,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9921 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=4058, Invalid=26044, Unknown=0, NotChecked=0, Total=30102 [2022-11-02 21:08:08,459 INFO L413 NwaCegarLoop]: 567 mSDtfsCounter, 2854 mSDsluCounter, 10645 mSDsCounter, 0 mSdLazyCounter, 733 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2854 SdHoareTripleChecker+Valid, 11212 SdHoareTripleChecker+Invalid, 2877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2080 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:08,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2854 Valid, 11212 Invalid, 2877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 733 Invalid, 0 Unknown, 2080 Unchecked, 0.8s Time] [2022-11-02 21:08:08,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15317 states. [2022-11-02 21:08:08,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15317 to 4153. [2022-11-02 21:08:08,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4153 states, 4152 states have (on average 1.3521194605009634) internal successors, (5614), 4152 states have internal predecessors, (5614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:08,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4153 states to 4153 states and 5614 transitions. [2022-11-02 21:08:08,563 INFO L78 Accepts]: Start accepts. Automaton has 4153 states and 5614 transitions. Word has length 188 [2022-11-02 21:08:08,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:08,563 INFO L495 AbstractCegarLoop]: Abstraction has 4153 states and 5614 transitions. [2022-11-02 21:08:08,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 9.176470588235293) internal successors, (312), 34 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:08,563 INFO L276 IsEmpty]: Start isEmpty. Operand 4153 states and 5614 transitions. [2022-11-02 21:08:08,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:08:08,566 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:08,567 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:08,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:08,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:08,767 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:08,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:08,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1000299369, now seen corresponding path program 1 times [2022-11-02 21:08:08,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:08,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [647505603] [2022-11-02 21:08:08,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:08,769 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:08,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:08,772 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:08,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2022-11-02 21:08:09,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:09,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 949 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-02 21:08:09,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:09,923 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 60 proven. 108 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-02 21:08:09,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:08:11,085 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 60 proven. 108 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-02 21:08:11,086 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:11,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [647505603] [2022-11-02 21:08:11,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [647505603] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:08:11,087 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:08:11,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2022-11-02 21:08:11,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135619773] [2022-11-02 21:08:11,087 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:08:11,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-02 21:08:11,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:11,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-02 21:08:11,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=1041, Unknown=0, NotChecked=0, Total=1122 [2022-11-02 21:08:11,089 INFO L87 Difference]: Start difference. First operand 4153 states and 5614 transitions. Second operand has 34 states, 34 states have (on average 9.205882352941176) internal successors, (313), 34 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:15,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:15,848 INFO L93 Difference]: Finished difference Result 13386 states and 18058 transitions. [2022-11-02 21:08:15,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-11-02 21:08:15,848 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 9.205882352941176) internal successors, (313), 34 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:08:15,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:15,854 INFO L225 Difference]: With dead ends: 13386 [2022-11-02 21:08:15,854 INFO L226 Difference]: Without dead ends: 9738 [2022-11-02 21:08:15,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5554 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=2581, Invalid=16325, Unknown=0, NotChecked=0, Total=18906 [2022-11-02 21:08:15,859 INFO L413 NwaCegarLoop]: 390 mSDtfsCounter, 2403 mSDsluCounter, 6828 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2403 SdHoareTripleChecker+Valid, 7218 SdHoareTripleChecker+Invalid, 1856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1286 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:15,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2403 Valid, 7218 Invalid, 1856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 508 Invalid, 0 Unknown, 1286 Unchecked, 0.6s Time] [2022-11-02 21:08:15,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9738 states. [2022-11-02 21:08:15,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9738 to 4025. [2022-11-02 21:08:15,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4025 states, 4024 states have (on average 1.3434393638170974) internal successors, (5406), 4024 states have internal predecessors, (5406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:15,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4025 states to 4025 states and 5406 transitions. [2022-11-02 21:08:15,961 INFO L78 Accepts]: Start accepts. Automaton has 4025 states and 5406 transitions. Word has length 188 [2022-11-02 21:08:15,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:15,961 INFO L495 AbstractCegarLoop]: Abstraction has 4025 states and 5406 transitions. [2022-11-02 21:08:15,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 9.205882352941176) internal successors, (313), 34 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:15,962 INFO L276 IsEmpty]: Start isEmpty. Operand 4025 states and 5406 transitions. [2022-11-02 21:08:15,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:08:15,969 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:15,969 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:15,988 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (48)] Ended with exit code 0 [2022-11-02 21:08:16,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:16,170 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:16,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:16,170 INFO L85 PathProgramCache]: Analyzing trace with hash 650861805, now seen corresponding path program 1 times [2022-11-02 21:08:16,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:16,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1750250315] [2022-11-02 21:08:16,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:16,171 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:16,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:16,172 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:16,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2022-11-02 21:08:16,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:16,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 949 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-02 21:08:16,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:17,079 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 36 proven. 101 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-02 21:08:17,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:08:17,748 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 126 proven. 11 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-02 21:08:17,748 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:17,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1750250315] [2022-11-02 21:08:17,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1750250315] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:08:17,748 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:08:17,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 28 [2022-11-02 21:08:17,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955143024] [2022-11-02 21:08:17,748 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:08:17,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-02 21:08:17,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:17,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-02 21:08:17,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=689, Unknown=0, NotChecked=0, Total=756 [2022-11-02 21:08:17,750 INFO L87 Difference]: Start difference. First operand 4025 states and 5406 transitions. Second operand has 28 states, 28 states have (on average 8.25) internal successors, (231), 28 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:21,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:21,101 INFO L93 Difference]: Finished difference Result 34554 states and 46639 transitions. [2022-11-02 21:08:21,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-11-02 21:08:21,102 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 8.25) internal successors, (231), 28 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:08:21,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:21,125 INFO L225 Difference]: With dead ends: 34554 [2022-11-02 21:08:21,125 INFO L226 Difference]: Without dead ends: 32802 [2022-11-02 21:08:21,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 346 SyntacticMatches, 2 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2219 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1786, Invalid=6586, Unknown=0, NotChecked=0, Total=8372 [2022-11-02 21:08:21,134 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 2276 mSDsluCounter, 4502 mSDsCounter, 0 mSdLazyCounter, 1308 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2276 SdHoareTripleChecker+Valid, 4718 SdHoareTripleChecker+Invalid, 1402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:21,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2276 Valid, 4718 Invalid, 1402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1308 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-02 21:08:21,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32802 states. [2022-11-02 21:08:21,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32802 to 7629. [2022-11-02 21:08:21,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7629 states, 7628 states have (on average 1.3445201887781857) internal successors, (10256), 7628 states have internal predecessors, (10256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:21,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7629 states to 7629 states and 10256 transitions. [2022-11-02 21:08:21,497 INFO L78 Accepts]: Start accepts. Automaton has 7629 states and 10256 transitions. Word has length 188 [2022-11-02 21:08:21,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:21,497 INFO L495 AbstractCegarLoop]: Abstraction has 7629 states and 10256 transitions. [2022-11-02 21:08:21,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 8.25) internal successors, (231), 28 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:21,498 INFO L276 IsEmpty]: Start isEmpty. Operand 7629 states and 10256 transitions. [2022-11-02 21:08:21,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:08:21,505 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:21,506 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:21,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2022-11-02 21:08:21,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:21,725 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:21,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:21,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1038081937, now seen corresponding path program 1 times [2022-11-02 21:08:21,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:21,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2128992673] [2022-11-02 21:08:21,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:21,726 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:21,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:21,727 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:21,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2022-11-02 21:08:22,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:22,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 949 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-02 21:08:22,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:23,080 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 16 proven. 152 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-02 21:08:23,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:08:24,042 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 16 proven. 152 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-02 21:08:24,042 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:24,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2128992673] [2022-11-02 21:08:24,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2128992673] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:08:24,043 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:08:24,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 34 [2022-11-02 21:08:24,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562834754] [2022-11-02 21:08:24,043 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:08:24,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-02 21:08:24,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:24,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-02 21:08:24,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=1042, Unknown=0, NotChecked=0, Total=1122 [2022-11-02 21:08:24,045 INFO L87 Difference]: Start difference. First operand 7629 states and 10256 transitions. Second operand has 34 states, 34 states have (on average 9.647058823529411) internal successors, (328), 34 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:34,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:34,464 INFO L93 Difference]: Finished difference Result 38431 states and 51888 transitions. [2022-11-02 21:08:34,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2022-11-02 21:08:34,465 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 9.647058823529411) internal successors, (328), 34 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:08:34,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:34,485 INFO L225 Difference]: With dead ends: 38431 [2022-11-02 21:08:34,485 INFO L226 Difference]: Without dead ends: 31321 [2022-11-02 21:08:34,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 529 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12128 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=5097, Invalid=30435, Unknown=0, NotChecked=0, Total=35532 [2022-11-02 21:08:34,492 INFO L413 NwaCegarLoop]: 782 mSDtfsCounter, 1966 mSDsluCounter, 15075 mSDsCounter, 0 mSdLazyCounter, 3737 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1966 SdHoareTripleChecker+Valid, 15857 SdHoareTripleChecker+Invalid, 3791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 3737 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:34,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1966 Valid, 15857 Invalid, 3791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 3737 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-02 21:08:34,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31321 states. [2022-11-02 21:08:34,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31321 to 8253. [2022-11-02 21:08:34,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8253 states, 8252 states have (on average 1.3349491032476974) internal successors, (11016), 8252 states have internal predecessors, (11016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:34,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8253 states to 8253 states and 11016 transitions. [2022-11-02 21:08:34,757 INFO L78 Accepts]: Start accepts. Automaton has 8253 states and 11016 transitions. Word has length 188 [2022-11-02 21:08:34,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:34,757 INFO L495 AbstractCegarLoop]: Abstraction has 8253 states and 11016 transitions. [2022-11-02 21:08:34,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 9.647058823529411) internal successors, (328), 34 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:34,758 INFO L276 IsEmpty]: Start isEmpty. Operand 8253 states and 11016 transitions. [2022-11-02 21:08:34,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:08:34,765 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:34,765 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:34,784 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (50)] Ended with exit code 0 [2022-11-02 21:08:34,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:34,978 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:34,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:34,979 INFO L85 PathProgramCache]: Analyzing trace with hash -358023567, now seen corresponding path program 1 times [2022-11-02 21:08:34,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:34,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1677577467] [2022-11-02 21:08:34,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:34,980 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:34,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:34,981 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:34,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2022-11-02 21:08:35,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:35,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 949 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-02 21:08:35,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:36,243 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 12 proven. 156 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-02 21:08:36,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:08:37,588 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 12 proven. 156 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-02 21:08:37,588 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:37,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1677577467] [2022-11-02 21:08:37,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1677577467] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:08:37,589 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:08:37,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 34 [2022-11-02 21:08:37,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668836607] [2022-11-02 21:08:37,590 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:08:37,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-02 21:08:37,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:37,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-02 21:08:37,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=1042, Unknown=0, NotChecked=0, Total=1122 [2022-11-02 21:08:37,592 INFO L87 Difference]: Start difference. First operand 8253 states and 11016 transitions. Second operand has 34 states, 34 states have (on average 9.529411764705882) internal successors, (324), 34 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:42,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:42,941 INFO L93 Difference]: Finished difference Result 29128 states and 39076 transitions. [2022-11-02 21:08:42,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2022-11-02 21:08:42,947 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 9.529411764705882) internal successors, (324), 34 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:08:42,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:42,963 INFO L225 Difference]: With dead ends: 29128 [2022-11-02 21:08:42,963 INFO L226 Difference]: Without dead ends: 21394 [2022-11-02 21:08:42,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 345 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5320 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=2151, Invalid=16755, Unknown=0, NotChecked=0, Total=18906 [2022-11-02 21:08:42,970 INFO L413 NwaCegarLoop]: 544 mSDtfsCounter, 2378 mSDsluCounter, 9956 mSDsCounter, 0 mSdLazyCounter, 839 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2378 SdHoareTripleChecker+Valid, 10500 SdHoareTripleChecker+Invalid, 3035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2169 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:42,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2378 Valid, 10500 Invalid, 3035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 839 Invalid, 0 Unknown, 2169 Unchecked, 0.8s Time] [2022-11-02 21:08:42,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21394 states. [2022-11-02 21:08:43,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21394 to 7629. [2022-11-02 21:08:43,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7629 states, 7628 states have (on average 1.3408495018353435) internal successors, (10228), 7628 states have internal predecessors, (10228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:43,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7629 states to 7629 states and 10228 transitions. [2022-11-02 21:08:43,154 INFO L78 Accepts]: Start accepts. Automaton has 7629 states and 10228 transitions. Word has length 188 [2022-11-02 21:08:43,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:43,154 INFO L495 AbstractCegarLoop]: Abstraction has 7629 states and 10228 transitions. [2022-11-02 21:08:43,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 9.529411764705882) internal successors, (324), 34 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:43,155 INFO L276 IsEmpty]: Start isEmpty. Operand 7629 states and 10228 transitions. [2022-11-02 21:08:43,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:08:43,159 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:43,159 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:43,175 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (51)] Ended with exit code 0 [2022-11-02 21:08:43,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:43,360 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:43,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:43,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1416983795, now seen corresponding path program 1 times [2022-11-02 21:08:43,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:43,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1377964043] [2022-11-02 21:08:43,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:43,362 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:43,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:43,362 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:43,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2022-11-02 21:08:43,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:43,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 949 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-02 21:08:43,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:44,730 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 124 proven. 14 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-02 21:08:44,730 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:08:47,469 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 106 proven. 49 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-02 21:08:47,469 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:47,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1377964043] [2022-11-02 21:08:47,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1377964043] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:08:47,470 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:08:47,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16] total 28 [2022-11-02 21:08:47,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442600804] [2022-11-02 21:08:47,470 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:08:47,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-02 21:08:47,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:47,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-02 21:08:47,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=659, Unknown=0, NotChecked=0, Total=756 [2022-11-02 21:08:47,472 INFO L87 Difference]: Start difference. First operand 7629 states and 10228 transitions. Second operand has 28 states, 28 states have (on average 11.0) internal successors, (308), 28 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:50,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:08:50,954 INFO L93 Difference]: Finished difference Result 47611 states and 65563 transitions. [2022-11-02 21:08:50,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-11-02 21:08:50,954 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 11.0) internal successors, (308), 28 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:08:50,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:08:50,992 INFO L225 Difference]: With dead ends: 47611 [2022-11-02 21:08:50,992 INFO L226 Difference]: Without dead ends: 47609 [2022-11-02 21:08:50,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 356 SyntacticMatches, 2 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2378 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1477, Invalid=7079, Unknown=0, NotChecked=0, Total=8556 [2022-11-02 21:08:50,999 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 1906 mSDsluCounter, 2833 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1906 SdHoareTripleChecker+Valid, 2948 SdHoareTripleChecker+Invalid, 1143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 729 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:08:50,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1906 Valid, 2948 Invalid, 1143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 347 Invalid, 0 Unknown, 729 Unchecked, 0.5s Time] [2022-11-02 21:08:51,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47609 states. [2022-11-02 21:08:51,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47609 to 7929. [2022-11-02 21:08:51,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7929 states, 7928 states have (on average 1.3390514631685166) internal successors, (10616), 7928 states have internal predecessors, (10616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:51,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7929 states to 7929 states and 10616 transitions. [2022-11-02 21:08:51,406 INFO L78 Accepts]: Start accepts. Automaton has 7929 states and 10616 transitions. Word has length 188 [2022-11-02 21:08:51,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:08:51,406 INFO L495 AbstractCegarLoop]: Abstraction has 7929 states and 10616 transitions. [2022-11-02 21:08:51,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 11.0) internal successors, (308), 28 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:08:51,407 INFO L276 IsEmpty]: Start isEmpty. Operand 7929 states and 10616 transitions. [2022-11-02 21:08:51,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:08:51,412 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:51,412 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:51,427 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (52)] Ended with exit code 0 [2022-11-02 21:08:51,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:08:51,613 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:51,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:51,613 INFO L85 PathProgramCache]: Analyzing trace with hash -994858149, now seen corresponding path program 1 times [2022-11-02 21:08:51,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:08:51,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [531393768] [2022-11-02 21:08:51,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:51,614 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:08:51,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:08:51,619 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:08:51,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2022-11-02 21:08:51,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:51,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 949 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-02 21:08:51,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:08:52,658 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 100 proven. 35 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-02 21:08:52,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:08:53,935 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 100 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:08:53,935 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:08:53,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [531393768] [2022-11-02 21:08:53,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [531393768] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:08:53,935 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:08:53,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 25] total 42 [2022-11-02 21:08:53,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337905828] [2022-11-02 21:08:53,936 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:08:53,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-11-02 21:08:53,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:08:53,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-11-02 21:08:53,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1617, Unknown=0, NotChecked=0, Total=1722 [2022-11-02 21:08:53,937 INFO L87 Difference]: Start difference. First operand 7929 states and 10616 transitions. Second operand has 42 states, 42 states have (on average 6.5476190476190474) internal successors, (275), 42 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:04,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:04,080 INFO L93 Difference]: Finished difference Result 33234 states and 45399 transitions. [2022-11-02 21:09:04,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2022-11-02 21:09:04,081 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 6.5476190476190474) internal successors, (275), 42 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2022-11-02 21:09:04,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:04,104 INFO L225 Difference]: With dead ends: 33234 [2022-11-02 21:09:04,104 INFO L226 Difference]: Without dead ends: 25824 [2022-11-02 21:09:04,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 517 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10181 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=6547, Invalid=24605, Unknown=0, NotChecked=0, Total=31152 [2022-11-02 21:09:04,115 INFO L413 NwaCegarLoop]: 439 mSDtfsCounter, 2924 mSDsluCounter, 11265 mSDsCounter, 0 mSdLazyCounter, 3278 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2924 SdHoareTripleChecker+Valid, 11704 SdHoareTripleChecker+Invalid, 3469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 3278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 33 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:04,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2924 Valid, 11704 Invalid, 3469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 3278 Invalid, 0 Unknown, 33 Unchecked, 3.2s Time] [2022-11-02 21:09:04,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25824 states. [2022-11-02 21:09:04,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25824 to 9943. [2022-11-02 21:09:04,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9943 states, 9942 states have (on average 1.3545564272782136) internal successors, (13467), 9942 states have internal predecessors, (13467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:04,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9943 states to 9943 states and 13467 transitions. [2022-11-02 21:09:04,437 INFO L78 Accepts]: Start accepts. Automaton has 9943 states and 13467 transitions. Word has length 188 [2022-11-02 21:09:04,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:04,437 INFO L495 AbstractCegarLoop]: Abstraction has 9943 states and 13467 transitions. [2022-11-02 21:09:04,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 6.5476190476190474) internal successors, (275), 42 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:09:04,438 INFO L276 IsEmpty]: Start isEmpty. Operand 9943 states and 13467 transitions. [2022-11-02 21:09:04,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-02 21:09:04,442 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:04,442 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:09:04,455 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (53)] Ended with exit code 0 [2022-11-02 21:09:04,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:09:04,643 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:09:04,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:04,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1271523037, now seen corresponding path program 1 times [2022-11-02 21:09:04,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:09:04,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2142878004] [2022-11-02 21:09:04,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:04,644 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:09:04,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:09:04,646 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:09:04,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41e87ac2-6995-4abd-92e0-cef89a3e31d5/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2022-11-02 21:09:04,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:04,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 949 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-02 21:09:04,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:09:05,681 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 72 proven. 39 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-11-02 21:09:05,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:09:07,022 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 72 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:07,022 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:09:07,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2142878004] [2022-11-02 21:09:07,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2142878004] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:09:07,023 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:09:07,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 25] total 42 [2022-11-02 21:09:07,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213762699] [2022-11-02 21:09:07,023 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:09:07,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-11-02 21:09:07,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:09:07,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-11-02 21:09:07,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1617, Unknown=0, NotChecked=0, Total=1722 [2022-11-02 21:09:07,025 INFO L87 Difference]: Start difference. First operand 9943 states and 13467 transitions. Second operand has 42 states, 42 states have (on average 6.5476190476190474) internal successors, (275), 42 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)