./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.2.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.2.ufo.UNBOUNDED.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX --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 32bit --witnessprinter.graph.data.programhash 5c227f1dec7d604552aae19de1afcc1049837e83568477af6195219b22e2f636 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 09:09:02,253 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 09:09:02,257 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 09:09:02,309 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 09:09:02,310 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 09:09:02,311 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 09:09:02,314 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 09:09:02,317 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 09:09:02,319 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 09:09:02,321 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 09:09:02,322 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 09:09:02,324 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 09:09:02,325 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 09:09:02,327 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 09:09:02,329 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 09:09:02,331 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 09:09:02,332 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 09:09:02,334 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 09:09:02,337 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 09:09:02,346 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 09:09:02,352 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 09:09:02,359 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 09:09:02,361 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 09:09:02,364 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 09:09:02,370 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 09:09:02,373 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 09:09:02,374 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 09:09:02,376 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 09:09:02,377 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 09:09:02,379 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 09:09:02,379 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 09:09:02,381 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 09:09:02,383 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 09:09:02,384 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 09:09:02,386 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 09:09:02,386 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 09:09:02,387 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 09:09:02,388 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 09:09:02,388 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 09:09:02,389 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 09:09:02,390 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 09:09:02,391 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-09 09:09:02,433 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 09:09:02,433 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 09:09:02,434 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 09:09:02,440 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 09:09:02,442 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 09:09:02,442 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 09:09:02,442 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 09:09:02,443 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 09:09:02,443 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 09:09:02,443 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 09:09:02,444 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 09:09:02,445 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 09:09:02,445 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 09:09:02,445 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 09:09:02,446 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 09:09:02,446 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 09:09:02,446 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 09:09:02,446 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 09:09:02,447 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 09:09:02,447 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 09:09:02,447 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 09:09:02,447 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 09:09:02,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:09:02,448 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 09:09:02,448 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 09:09:02,448 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 09:09:02,449 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 09:09:02,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 09:09:02,449 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 09:09:02,451 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 09:09:02,451 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 09:09:02,451 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 09:09:02,452 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_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5c227f1dec7d604552aae19de1afcc1049837e83568477af6195219b22e2f636 [2021-11-09 09:09:02,707 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 09:09:02,740 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 09:09:02,742 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 09:09:02,743 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 09:09:02,745 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 09:09:02,747 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.2.ufo.UNBOUNDED.pals.c [2021-11-09 09:09:02,829 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/data/a00692f3c/8819594d0cc94a83aec78fd4f32e0b7e/FLAGbcd10de2f [2021-11-09 09:09:03,409 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 09:09:03,413 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.2.ufo.UNBOUNDED.pals.c [2021-11-09 09:09:03,430 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/data/a00692f3c/8819594d0cc94a83aec78fd4f32e0b7e/FLAGbcd10de2f [2021-11-09 09:09:03,716 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/data/a00692f3c/8819594d0cc94a83aec78fd4f32e0b7e [2021-11-09 09:09:03,718 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 09:09:03,720 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 09:09:03,729 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 09:09:03,730 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 09:09:03,735 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 09:09:03,735 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:09:03" (1/1) ... [2021-11-09 09:09:03,737 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@de035dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:03, skipping insertion in model container [2021-11-09 09:09:03,737 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:09:03" (1/1) ... [2021-11-09 09:09:03,743 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 09:09:03,783 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 09:09:04,039 WARN L228 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_7cf48572-e095-4e58-862b-86ae187d4db5/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.2.ufo.UNBOUNDED.pals.c[11921,11934] [2021-11-09 09:09:04,042 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:09:04,052 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 09:09:04,114 WARN L228 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_7cf48572-e095-4e58-862b-86ae187d4db5/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.2.ufo.UNBOUNDED.pals.c[11921,11934] [2021-11-09 09:09:04,115 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:09:04,131 INFO L208 MainTranslator]: Completed translation [2021-11-09 09:09:04,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:04 WrapperNode [2021-11-09 09:09:04,132 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 09:09:04,133 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 09:09:04,133 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 09:09:04,133 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 09:09:04,141 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:04" (1/1) ... [2021-11-09 09:09:04,154 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:04" (1/1) ... [2021-11-09 09:09:04,226 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 09:09:04,227 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 09:09:04,228 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 09:09:04,228 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 09:09:04,236 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:04" (1/1) ... [2021-11-09 09:09:04,237 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:04" (1/1) ... [2021-11-09 09:09:04,250 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:04" (1/1) ... [2021-11-09 09:09:04,251 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:04" (1/1) ... [2021-11-09 09:09:04,304 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:04" (1/1) ... [2021-11-09 09:09:04,341 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:04" (1/1) ... [2021-11-09 09:09:04,348 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:04" (1/1) ... [2021-11-09 09:09:04,361 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 09:09:04,362 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 09:09:04,363 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 09:09:04,363 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 09:09:04,368 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:04" (1/1) ... [2021-11-09 09:09:04,376 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:09:04,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:09:04,406 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 09:09:04,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 09:09:04,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 09:09:04,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 09:09:04,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 09:09:04,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 09:09:05,792 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 09:09:05,793 INFO L299 CfgBuilder]: Removed 183 assume(true) statements. [2021-11-09 09:09:05,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:09:05 BoogieIcfgContainer [2021-11-09 09:09:05,797 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 09:09:05,799 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 09:09:05,799 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 09:09:05,803 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 09:09:05,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 09:09:03" (1/3) ... [2021-11-09 09:09:05,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@94bdccf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:09:05, skipping insertion in model container [2021-11-09 09:09:05,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:04" (2/3) ... [2021-11-09 09:09:05,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@94bdccf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:09:05, skipping insertion in model container [2021-11-09 09:09:05,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:09:05" (3/3) ... [2021-11-09 09:09:05,808 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_Triplicated.2.ufo.UNBOUNDED.pals.c [2021-11-09 09:09:05,816 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 09:09:05,817 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 37 error locations. [2021-11-09 09:09:05,887 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 09:09:05,896 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-09 09:09:05,896 INFO L340 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2021-11-09 09:09:05,942 INFO L276 IsEmpty]: Start isEmpty. Operand has 520 states, 482 states have (on average 1.7966804979253113) internal successors, (866), 519 states have internal predecessors, (866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:05,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-09 09:09:05,948 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:05,949 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:05,949 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 09:09:05,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:05,955 INFO L85 PathProgramCache]: Analyzing trace with hash 595705480, now seen corresponding path program 1 times [2021-11-09 09:09:05,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:05,964 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130635388] [2021-11-09 09:09:05,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:05,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:06,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:06,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:06,143 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:06,143 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130635388] [2021-11-09 09:09:06,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130635388] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:06,144 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:06,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:09:06,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386234138] [2021-11-09 09:09:06,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:09:06,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:06,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:09:06,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:09:06,168 INFO L87 Difference]: Start difference. First operand has 520 states, 482 states have (on average 1.7966804979253113) internal successors, (866), 519 states have internal predecessors, (866), 0 states have call successors, (0), 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 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:06,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:06,496 INFO L93 Difference]: Finished difference Result 1242 states and 2054 transitions. [2021-11-09 09:09:06,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:09:06,498 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-09 09:09:06,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:06,519 INFO L225 Difference]: With dead ends: 1242 [2021-11-09 09:09:06,520 INFO L226 Difference]: Without dead ends: 724 [2021-11-09 09:09:06,525 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:09:06,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2021-11-09 09:09:06,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 456. [2021-11-09 09:09:06,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 425 states have (on average 1.6705882352941177) internal successors, (710), 455 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:06,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 710 transitions. [2021-11-09 09:09:06,600 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 710 transitions. Word has length 9 [2021-11-09 09:09:06,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:06,601 INFO L470 AbstractCegarLoop]: Abstraction has 456 states and 710 transitions. [2021-11-09 09:09:06,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:06,602 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 710 transitions. [2021-11-09 09:09:06,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-09 09:09:06,603 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:06,603 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:06,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 09:09:06,604 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 09:09:06,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:06,605 INFO L85 PathProgramCache]: Analyzing trace with hash -503954138, now seen corresponding path program 1 times [2021-11-09 09:09:06,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:06,605 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890342226] [2021-11-09 09:09:06,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:06,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:06,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:06,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:06,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:06,659 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890342226] [2021-11-09 09:09:06,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890342226] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:06,659 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:06,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:09:06,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738782837] [2021-11-09 09:09:06,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:09:06,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:06,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:09:06,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:09:06,663 INFO L87 Difference]: Start difference. First operand 456 states and 710 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:06,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:06,751 INFO L93 Difference]: Finished difference Result 1128 states and 1740 transitions. [2021-11-09 09:09:06,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:09:06,754 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-09 09:09:06,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:06,762 INFO L225 Difference]: With dead ends: 1128 [2021-11-09 09:09:06,763 INFO L226 Difference]: Without dead ends: 674 [2021-11-09 09:09:06,770 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:09:06,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2021-11-09 09:09:06,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 423. [2021-11-09 09:09:06,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 395 states have (on average 1.650632911392405) internal successors, (652), 422 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:06,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 652 transitions. [2021-11-09 09:09:06,820 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 652 transitions. Word has length 10 [2021-11-09 09:09:06,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:06,821 INFO L470 AbstractCegarLoop]: Abstraction has 423 states and 652 transitions. [2021-11-09 09:09:06,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:06,822 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 652 transitions. [2021-11-09 09:09:06,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-09 09:09:06,825 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:06,825 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:06,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-09 09:09:06,826 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 09:09:06,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:06,827 INFO L85 PathProgramCache]: Analyzing trace with hash -248055967, now seen corresponding path program 1 times [2021-11-09 09:09:06,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:06,827 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085412253] [2021-11-09 09:09:06,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:06,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:06,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:06,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:06,890 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:06,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085412253] [2021-11-09 09:09:06,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085412253] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:06,891 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:06,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:09:06,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329193615] [2021-11-09 09:09:06,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:09:06,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:06,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:09:06,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:09:06,893 INFO L87 Difference]: Start difference. First operand 423 states and 652 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:06,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:06,964 INFO L93 Difference]: Finished difference Result 1247 states and 1927 transitions. [2021-11-09 09:09:06,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:09:06,965 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-09 09:09:06,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:06,971 INFO L225 Difference]: With dead ends: 1247 [2021-11-09 09:09:06,971 INFO L226 Difference]: Without dead ends: 834 [2021-11-09 09:09:06,972 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:09:06,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2021-11-09 09:09:06,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 427. [2021-11-09 09:09:06,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 399 states have (on average 1.644110275689223) internal successors, (656), 426 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:06,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 656 transitions. [2021-11-09 09:09:06,991 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 656 transitions. Word has length 14 [2021-11-09 09:09:06,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:06,991 INFO L470 AbstractCegarLoop]: Abstraction has 427 states and 656 transitions. [2021-11-09 09:09:06,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:06,992 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 656 transitions. [2021-11-09 09:09:06,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-09 09:09:06,993 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:06,993 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:06,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-09 09:09:06,994 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 09:09:06,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:06,995 INFO L85 PathProgramCache]: Analyzing trace with hash -35486156, now seen corresponding path program 1 times [2021-11-09 09:09:06,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:06,995 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330714984] [2021-11-09 09:09:06,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:06,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:07,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:07,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:07,086 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:07,086 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330714984] [2021-11-09 09:09:07,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330714984] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:07,086 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:07,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 09:09:07,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544480823] [2021-11-09 09:09:07,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:09:07,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:07,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:09:07,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:09:07,090 INFO L87 Difference]: Start difference. First operand 427 states and 656 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:07,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:07,186 INFO L93 Difference]: Finished difference Result 1574 states and 2397 transitions. [2021-11-09 09:09:07,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:09:07,186 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-09 09:09:07,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:07,194 INFO L225 Difference]: With dead ends: 1574 [2021-11-09 09:09:07,194 INFO L226 Difference]: Without dead ends: 1161 [2021-11-09 09:09:07,197 INFO L786 BasicCegarLoop]: 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 [2021-11-09 09:09:07,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1161 states. [2021-11-09 09:09:07,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1161 to 429. [2021-11-09 09:09:07,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 401 states have (on average 1.6408977556109725) internal successors, (658), 428 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:07,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 658 transitions. [2021-11-09 09:09:07,220 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 658 transitions. Word has length 18 [2021-11-09 09:09:07,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:07,221 INFO L470 AbstractCegarLoop]: Abstraction has 429 states and 658 transitions. [2021-11-09 09:09:07,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:07,221 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 658 transitions. [2021-11-09 09:09:07,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-09 09:09:07,223 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:07,224 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:07,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-09 09:09:07,225 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 09:09:07,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:07,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1707916525, now seen corresponding path program 1 times [2021-11-09 09:09:07,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:07,229 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37058206] [2021-11-09 09:09:07,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:07,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:07,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:07,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:07,334 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:07,334 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37058206] [2021-11-09 09:09:07,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37058206] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:07,335 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:07,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 09:09:07,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591436279] [2021-11-09 09:09:07,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:09:07,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:07,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:09:07,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:09:07,338 INFO L87 Difference]: Start difference. First operand 429 states and 658 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:07,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:07,381 INFO L93 Difference]: Finished difference Result 671 states and 1022 transitions. [2021-11-09 09:09:07,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:09:07,382 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-09 09:09:07,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:07,385 INFO L225 Difference]: With dead ends: 671 [2021-11-09 09:09:07,385 INFO L226 Difference]: Without dead ends: 427 [2021-11-09 09:09:07,386 INFO L786 BasicCegarLoop]: 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 [2021-11-09 09:09:07,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2021-11-09 09:09:07,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 427. [2021-11-09 09:09:07,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 399 states have (on average 1.631578947368421) internal successors, (651), 426 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:07,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 651 transitions. [2021-11-09 09:09:07,400 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 651 transitions. Word has length 19 [2021-11-09 09:09:07,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:07,400 INFO L470 AbstractCegarLoop]: Abstraction has 427 states and 651 transitions. [2021-11-09 09:09:07,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:07,401 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 651 transitions. [2021-11-09 09:09:07,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-09 09:09:07,405 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:07,405 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:07,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-09 09:09:07,406 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 09:09:07,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:07,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1967275947, now seen corresponding path program 1 times [2021-11-09 09:09:07,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:07,407 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950069691] [2021-11-09 09:09:07,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:07,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:07,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:07,481 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:07,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:07,481 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950069691] [2021-11-09 09:09:07,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950069691] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:09:07,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059396080] [2021-11-09 09:09:07,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:07,484 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:09:07,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:09:07,497 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:09:07,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-09 09:09:07,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:07,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 09:09:07,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:09:07,745 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:07,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059396080] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:09:07,746 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:09:07,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-11-09 09:09:07,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634197607] [2021-11-09 09:09:07,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:09:07,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:07,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:09:07,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:09:07,748 INFO L87 Difference]: Start difference. First operand 427 states and 651 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:07,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:07,839 INFO L93 Difference]: Finished difference Result 1663 states and 2549 transitions. [2021-11-09 09:09:07,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:09:07,840 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-09 09:09:07,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:07,847 INFO L225 Difference]: With dead ends: 1663 [2021-11-09 09:09:07,847 INFO L226 Difference]: Without dead ends: 1247 [2021-11-09 09:09:07,849 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:09:07,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1247 states. [2021-11-09 09:09:07,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1247 to 573. [2021-11-09 09:09:07,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 545 states have (on average 1.653211009174312) internal successors, (901), 572 states have internal predecessors, (901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:07,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 901 transitions. [2021-11-09 09:09:07,874 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 901 transitions. Word has length 21 [2021-11-09 09:09:07,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:07,875 INFO L470 AbstractCegarLoop]: Abstraction has 573 states and 901 transitions. [2021-11-09 09:09:07,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:07,875 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 901 transitions. [2021-11-09 09:09:07,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-09 09:09:07,891 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:07,892 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:07,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-09 09:09:08,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:09:08,106 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 09:09:08,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:08,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1165168607, now seen corresponding path program 2 times [2021-11-09 09:09:08,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:08,107 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886235921] [2021-11-09 09:09:08,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:08,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:08,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:08,148 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-09 09:09:08,149 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:08,149 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886235921] [2021-11-09 09:09:08,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886235921] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:08,150 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:08,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:09:08,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782614492] [2021-11-09 09:09:08,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:09:08,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:08,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:09:08,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:09:08,153 INFO L87 Difference]: Start difference. First operand 573 states and 901 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:08,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:08,281 INFO L93 Difference]: Finished difference Result 1294 states and 2004 transitions. [2021-11-09 09:09:08,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:09:08,281 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-11-09 09:09:08,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:08,286 INFO L225 Difference]: With dead ends: 1294 [2021-11-09 09:09:08,287 INFO L226 Difference]: Without dead ends: 779 [2021-11-09 09:09:08,288 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:09:08,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2021-11-09 09:09:08,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 507. [2021-11-09 09:09:08,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 484 states have (on average 1.603305785123967) internal successors, (776), 506 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:08,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 776 transitions. [2021-11-09 09:09:08,315 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 776 transitions. Word has length 28 [2021-11-09 09:09:08,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:08,316 INFO L470 AbstractCegarLoop]: Abstraction has 507 states and 776 transitions. [2021-11-09 09:09:08,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:08,316 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 776 transitions. [2021-11-09 09:09:08,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-09 09:09:08,317 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:08,317 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:08,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-09 09:09:08,318 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 09:09:08,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:08,319 INFO L85 PathProgramCache]: Analyzing trace with hash 777427029, now seen corresponding path program 1 times [2021-11-09 09:09:08,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:08,319 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844950204] [2021-11-09 09:09:08,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:08,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:08,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:08,385 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-09 09:09:08,386 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:08,386 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844950204] [2021-11-09 09:09:08,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844950204] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:08,386 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:08,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:09:08,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564273223] [2021-11-09 09:09:08,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:09:08,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:08,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:09:08,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:09:08,391 INFO L87 Difference]: Start difference. First operand 507 states and 776 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:08,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:08,447 INFO L93 Difference]: Finished difference Result 1162 states and 1763 transitions. [2021-11-09 09:09:08,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:09:08,448 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-11-09 09:09:08,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:08,452 INFO L225 Difference]: With dead ends: 1162 [2021-11-09 09:09:08,452 INFO L226 Difference]: Without dead ends: 686 [2021-11-09 09:09:08,453 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:09:08,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2021-11-09 09:09:08,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 456. [2021-11-09 09:09:08,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 435 states have (on average 1.567816091954023) internal successors, (682), 455 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:08,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 682 transitions. [2021-11-09 09:09:08,471 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 682 transitions. Word has length 28 [2021-11-09 09:09:08,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:08,472 INFO L470 AbstractCegarLoop]: Abstraction has 456 states and 682 transitions. [2021-11-09 09:09:08,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:08,472 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 682 transitions. [2021-11-09 09:09:08,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-09 09:09:08,475 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:08,475 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-09 09:09:08,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-09 09:09:08,476 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 09:09:08,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:08,477 INFO L85 PathProgramCache]: Analyzing trace with hash 104948594, now seen corresponding path program 1 times [2021-11-09 09:09:08,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:08,477 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555123204] [2021-11-09 09:09:08,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:08,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:08,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:08,557 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-09 09:09:08,557 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:08,561 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555123204] [2021-11-09 09:09:08,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555123204] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:08,562 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:08,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 09:09:08,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100984380] [2021-11-09 09:09:08,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:09:08,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:08,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:09:08,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:09:08,574 INFO L87 Difference]: Start difference. First operand 456 states and 682 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:08,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:08,630 INFO L93 Difference]: Finished difference Result 1096 states and 1644 transitions. [2021-11-09 09:09:08,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:09:08,630 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-09 09:09:08,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:08,636 INFO L225 Difference]: With dead ends: 1096 [2021-11-09 09:09:08,636 INFO L226 Difference]: Without dead ends: 684 [2021-11-09 09:09:08,638 INFO L786 BasicCegarLoop]: 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 [2021-11-09 09:09:08,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2021-11-09 09:09:08,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 456. [2021-11-09 09:09:08,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 435 states have (on average 1.5632183908045978) internal successors, (680), 455 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:08,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 680 transitions. [2021-11-09 09:09:08,654 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 680 transitions. Word has length 38 [2021-11-09 09:09:08,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:08,655 INFO L470 AbstractCegarLoop]: Abstraction has 456 states and 680 transitions. [2021-11-09 09:09:08,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:08,656 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 680 transitions. [2021-11-09 09:09:08,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-09 09:09:08,657 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:08,657 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-09 09:09:08,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-09 09:09:08,657 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 09:09:08,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:08,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1338937392, now seen corresponding path program 1 times [2021-11-09 09:09:08,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:08,658 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732460861] [2021-11-09 09:09:08,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:08,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:08,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:08,737 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-09 09:09:08,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:08,737 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732460861] [2021-11-09 09:09:08,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732460861] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:08,738 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:08,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:09:08,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562079464] [2021-11-09 09:09:08,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:09:08,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:08,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:09:08,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:09:08,743 INFO L87 Difference]: Start difference. First operand 456 states and 680 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:08,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:08,784 INFO L93 Difference]: Finished difference Result 1032 states and 1543 transitions. [2021-11-09 09:09:08,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:09:08,785 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-11-09 09:09:08,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:08,790 INFO L225 Difference]: With dead ends: 1032 [2021-11-09 09:09:08,790 INFO L226 Difference]: Without dead ends: 639 [2021-11-09 09:09:08,791 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:09:08,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2021-11-09 09:09:08,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 412. [2021-11-09 09:09:08,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 392 states have (on average 1.5459183673469388) internal successors, (606), 411 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:08,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 606 transitions. [2021-11-09 09:09:08,807 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 606 transitions. Word has length 50 [2021-11-09 09:09:08,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:08,809 INFO L470 AbstractCegarLoop]: Abstraction has 412 states and 606 transitions. [2021-11-09 09:09:08,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:08,809 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 606 transitions. [2021-11-09 09:09:08,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-09 09:09:08,811 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:08,811 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-09 09:09:08,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-09 09:09:08,812 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 09:09:08,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:08,813 INFO L85 PathProgramCache]: Analyzing trace with hash 970476669, now seen corresponding path program 1 times [2021-11-09 09:09:08,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:08,813 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039341828] [2021-11-09 09:09:08,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:08,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:08,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:08,877 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-09 09:09:08,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:08,877 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039341828] [2021-11-09 09:09:08,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039341828] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:08,878 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:08,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:09:08,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553399006] [2021-11-09 09:09:08,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:09:08,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:08,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:09:08,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:09:08,880 INFO L87 Difference]: Start difference. First operand 412 states and 606 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:08,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:08,935 INFO L93 Difference]: Finished difference Result 866 states and 1272 transitions. [2021-11-09 09:09:08,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:09:08,936 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-09 09:09:08,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:08,940 INFO L225 Difference]: With dead ends: 866 [2021-11-09 09:09:08,940 INFO L226 Difference]: Without dead ends: 509 [2021-11-09 09:09:08,941 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:09:08,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2021-11-09 09:09:08,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 368. [2021-11-09 09:09:08,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 352 states have (on average 1.4715909090909092) internal successors, (518), 367 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:08,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 518 transitions. [2021-11-09 09:09:08,980 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 518 transitions. Word has length 51 [2021-11-09 09:09:08,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:08,981 INFO L470 AbstractCegarLoop]: Abstraction has 368 states and 518 transitions. [2021-11-09 09:09:08,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:08,981 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 518 transitions. [2021-11-09 09:09:08,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-09 09:09:08,982 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:08,983 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-09 09:09:08,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-09 09:09:08,988 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 09:09:08,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:08,988 INFO L85 PathProgramCache]: Analyzing trace with hash 216341264, now seen corresponding path program 1 times [2021-11-09 09:09:08,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:08,989 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654798969] [2021-11-09 09:09:08,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:08,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:09,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:09,052 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-09 09:09:09,052 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:09,053 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654798969] [2021-11-09 09:09:09,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654798969] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:09,053 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:09,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 09:09:09,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477484369] [2021-11-09 09:09:09,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:09:09,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:09,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:09:09,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:09:09,055 INFO L87 Difference]: Start difference. First operand 368 states and 518 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:09,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:09,099 INFO L93 Difference]: Finished difference Result 874 states and 1251 transitions. [2021-11-09 09:09:09,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:09:09,102 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-11-09 09:09:09,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:09,106 INFO L225 Difference]: With dead ends: 874 [2021-11-09 09:09:09,107 INFO L226 Difference]: Without dead ends: 578 [2021-11-09 09:09:09,107 INFO L786 BasicCegarLoop]: 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 [2021-11-09 09:09:09,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2021-11-09 09:09:09,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 368. [2021-11-09 09:09:09,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 352 states have (on average 1.4659090909090908) internal successors, (516), 367 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:09,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 516 transitions. [2021-11-09 09:09:09,122 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 516 transitions. Word has length 62 [2021-11-09 09:09:09,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:09,123 INFO L470 AbstractCegarLoop]: Abstraction has 368 states and 516 transitions. [2021-11-09 09:09:09,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:09,123 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 516 transitions. [2021-11-09 09:09:09,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-09 09:09:09,124 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:09,124 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 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] [2021-11-09 09:09:09,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-09 09:09:09,126 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 09:09:09,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:09,126 INFO L85 PathProgramCache]: Analyzing trace with hash 542276843, now seen corresponding path program 1 times [2021-11-09 09:09:09,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:09,127 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369558049] [2021-11-09 09:09:09,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:09,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:09,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:09,180 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-09 09:09:09,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:09,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369558049] [2021-11-09 09:09:09,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369558049] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:09,181 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:09,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:09:09,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472889405] [2021-11-09 09:09:09,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:09:09,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:09,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:09:09,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:09:09,184 INFO L87 Difference]: Start difference. First operand 368 states and 516 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:09,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:09,225 INFO L93 Difference]: Finished difference Result 725 states and 1050 transitions. [2021-11-09 09:09:09,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:09:09,226 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-09 09:09:09,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:09,228 INFO L225 Difference]: With dead ends: 725 [2021-11-09 09:09:09,229 INFO L226 Difference]: Without dead ends: 463 [2021-11-09 09:09:09,229 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:09:09,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2021-11-09 09:09:09,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 326. [2021-11-09 09:09:09,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 320 states have (on average 1.44375) internal successors, (462), 325 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:09,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 462 transitions. [2021-11-09 09:09:09,243 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 462 transitions. Word has length 76 [2021-11-09 09:09:09,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:09,244 INFO L470 AbstractCegarLoop]: Abstraction has 326 states and 462 transitions. [2021-11-09 09:09:09,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:09,244 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 462 transitions. [2021-11-09 09:09:09,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-09 09:09:09,245 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:09,245 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 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] [2021-11-09 09:09:09,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-09 09:09:09,246 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 09:09:09,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:09,247 INFO L85 PathProgramCache]: Analyzing trace with hash -532838176, now seen corresponding path program 1 times [2021-11-09 09:09:09,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:09,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339518778] [2021-11-09 09:09:09,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:09,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:09,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:09,307 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-09 09:09:09,308 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:09,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339518778] [2021-11-09 09:09:09,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339518778] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:09,309 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:09,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:09:09,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831312134] [2021-11-09 09:09:09,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:09:09,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:09,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:09:09,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:09:09,312 INFO L87 Difference]: Start difference. First operand 326 states and 462 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:09,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:09,341 INFO L93 Difference]: Finished difference Result 514 states and 743 transitions. [2021-11-09 09:09:09,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:09:09,342 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-09 09:09:09,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:09,344 INFO L225 Difference]: With dead ends: 514 [2021-11-09 09:09:09,344 INFO L226 Difference]: Without dead ends: 272 [2021-11-09 09:09:09,345 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:09:09,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-11-09 09:09:09,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2021-11-09 09:09:09,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 266 states have (on average 1.4248120300751879) internal successors, (379), 271 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:09,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 379 transitions. [2021-11-09 09:09:09,355 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 379 transitions. Word has length 85 [2021-11-09 09:09:09,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:09,356 INFO L470 AbstractCegarLoop]: Abstraction has 272 states and 379 transitions. [2021-11-09 09:09:09,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:09,356 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 379 transitions. [2021-11-09 09:09:09,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-09 09:09:09,362 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:09,363 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 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] [2021-11-09 09:09:09,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-09 09:09:09,363 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 09:09:09,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:09,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1722161102, now seen corresponding path program 1 times [2021-11-09 09:09:09,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:09,364 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559332788] [2021-11-09 09:09:09,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:09,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:09,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:09,419 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-09 09:09:09,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:09,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559332788] [2021-11-09 09:09:09,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559332788] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:09,420 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:09,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 09:09:09,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908078520] [2021-11-09 09:09:09,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:09:09,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:09,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:09:09,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:09:09,426 INFO L87 Difference]: Start difference. First operand 272 states and 379 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:09,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:09,461 INFO L93 Difference]: Finished difference Result 446 states and 638 transitions. [2021-11-09 09:09:09,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:09:09,462 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-11-09 09:09:09,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:09,463 INFO L225 Difference]: With dead ends: 446 [2021-11-09 09:09:09,464 INFO L226 Difference]: Without dead ends: 272 [2021-11-09 09:09:09,466 INFO L786 BasicCegarLoop]: 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 [2021-11-09 09:09:09,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-11-09 09:09:09,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2021-11-09 09:09:09,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 266 states have (on average 1.4172932330827068) internal successors, (377), 271 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:09,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 377 transitions. [2021-11-09 09:09:09,476 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 377 transitions. Word has length 88 [2021-11-09 09:09:09,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:09,477 INFO L470 AbstractCegarLoop]: Abstraction has 272 states and 377 transitions. [2021-11-09 09:09:09,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:09,477 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 377 transitions. [2021-11-09 09:09:09,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-09 09:09:09,478 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:09,479 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-09 09:09:09,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-09 09:09:09,479 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 09:09:09,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:09,480 INFO L85 PathProgramCache]: Analyzing trace with hash 621115599, now seen corresponding path program 1 times [2021-11-09 09:09:09,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:09,481 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365036603] [2021-11-09 09:09:09,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:09,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:09,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:09,530 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-09 09:09:09,531 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:09,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365036603] [2021-11-09 09:09:09,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365036603] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:09,531 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:09,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:09:09,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517476135] [2021-11-09 09:09:09,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:09:09,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:09,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:09:09,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:09:09,533 INFO L87 Difference]: Start difference. First operand 272 states and 377 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:09,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:09,558 INFO L93 Difference]: Finished difference Result 576 states and 835 transitions. [2021-11-09 09:09:09,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:09:09,559 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2021-11-09 09:09:09,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:09,561 INFO L225 Difference]: With dead ends: 576 [2021-11-09 09:09:09,562 INFO L226 Difference]: Without dead ends: 407 [2021-11-09 09:09:09,562 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:09:09,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2021-11-09 09:09:09,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 267. [2021-11-09 09:09:09,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 262 states have (on average 1.4083969465648856) internal successors, (369), 266 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:09,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 369 transitions. [2021-11-09 09:09:09,574 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 369 transitions. Word has length 101 [2021-11-09 09:09:09,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:09,574 INFO L470 AbstractCegarLoop]: Abstraction has 267 states and 369 transitions. [2021-11-09 09:09:09,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:09,575 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 369 transitions. [2021-11-09 09:09:09,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-09 09:09:09,576 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:09,576 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-09 09:09:09,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-09 09:09:09,577 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 09:09:09,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:09,578 INFO L85 PathProgramCache]: Analyzing trace with hash 2032967497, now seen corresponding path program 1 times [2021-11-09 09:09:09,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:09,578 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384724089] [2021-11-09 09:09:09,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:09,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:09,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:09,662 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-09 09:09:09,662 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:09,662 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384724089] [2021-11-09 09:09:09,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384724089] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:09,663 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:09,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:09:09,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724176954] [2021-11-09 09:09:09,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:09:09,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:09,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:09:09,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:09:09,665 INFO L87 Difference]: Start difference. First operand 267 states and 369 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:09,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:09,689 INFO L93 Difference]: Finished difference Result 556 states and 805 transitions. [2021-11-09 09:09:09,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:09:09,690 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-11-09 09:09:09,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:09,692 INFO L225 Difference]: With dead ends: 556 [2021-11-09 09:09:09,692 INFO L226 Difference]: Without dead ends: 392 [2021-11-09 09:09:09,693 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:09:09,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2021-11-09 09:09:09,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 263. [2021-11-09 09:09:09,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 259 states have (on average 1.3976833976833978) internal successors, (362), 262 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:09,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 362 transitions. [2021-11-09 09:09:09,705 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 362 transitions. Word has length 106 [2021-11-09 09:09:09,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:09,705 INFO L470 AbstractCegarLoop]: Abstraction has 263 states and 362 transitions. [2021-11-09 09:09:09,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:09,706 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 362 transitions. [2021-11-09 09:09:09,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-09 09:09:09,707 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:09,707 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:09,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-09 09:09:09,708 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 09:09:09,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:09,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1082553381, now seen corresponding path program 1 times [2021-11-09 09:09:09,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:09,708 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390148844] [2021-11-09 09:09:09,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:09,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:09,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:09,756 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-09 09:09:09,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:09,757 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390148844] [2021-11-09 09:09:09,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390148844] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:09,757 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:09,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:09:09,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987923120] [2021-11-09 09:09:09,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:09:09,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:09,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:09:09,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:09:09,760 INFO L87 Difference]: Start difference. First operand 263 states and 362 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:09,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:09,780 INFO L93 Difference]: Finished difference Result 421 states and 599 transitions. [2021-11-09 09:09:09,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:09:09,781 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-09 09:09:09,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:09,783 INFO L225 Difference]: With dead ends: 421 [2021-11-09 09:09:09,784 INFO L226 Difference]: Without dead ends: 261 [2021-11-09 09:09:09,784 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:09:09,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2021-11-09 09:09:09,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 260. [2021-11-09 09:09:09,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 257 states have (on average 1.3852140077821011) internal successors, (356), 259 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:09,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 356 transitions. [2021-11-09 09:09:09,797 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 356 transitions. Word has length 112 [2021-11-09 09:09:09,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:09,797 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 356 transitions. [2021-11-09 09:09:09,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:09,798 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 356 transitions. [2021-11-09 09:09:09,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-09 09:09:09,799 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:09,799 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:09,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-09 09:09:09,800 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 09:09:09,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:09,801 INFO L85 PathProgramCache]: Analyzing trace with hash -98884590, now seen corresponding path program 1 times [2021-11-09 09:09:09,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:09,801 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499344403] [2021-11-09 09:09:09,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:09,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:09,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:09,851 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-09 09:09:09,851 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:09,851 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499344403] [2021-11-09 09:09:09,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499344403] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:09,852 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:09,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:09:09,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957115275] [2021-11-09 09:09:09,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:09:09,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:09,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:09:09,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:09:09,854 INFO L87 Difference]: Start difference. First operand 260 states and 356 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:09,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:09,866 INFO L93 Difference]: Finished difference Result 465 states and 659 transitions. [2021-11-09 09:09:09,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:09:09,866 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2021-11-09 09:09:09,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:09,868 INFO L225 Difference]: With dead ends: 465 [2021-11-09 09:09:09,869 INFO L226 Difference]: Without dead ends: 308 [2021-11-09 09:09:09,869 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:09:09,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2021-11-09 09:09:09,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 257. [2021-11-09 09:09:09,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 255 states have (on average 1.380392156862745) internal successors, (352), 256 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:09,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 352 transitions. [2021-11-09 09:09:09,882 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 352 transitions. Word has length 120 [2021-11-09 09:09:09,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:09,882 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 352 transitions. [2021-11-09 09:09:09,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:09,883 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 352 transitions. [2021-11-09 09:09:09,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-09 09:09:09,884 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:09,884 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:09,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-09 09:09:09,885 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 09:09:09,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:09,886 INFO L85 PathProgramCache]: Analyzing trace with hash 177669221, now seen corresponding path program 1 times [2021-11-09 09:09:09,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:09,886 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759772011] [2021-11-09 09:09:09,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:09,886 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:09,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:09,944 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-09 09:09:09,944 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:09,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759772011] [2021-11-09 09:09:09,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759772011] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:09:09,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851061366] [2021-11-09 09:09:09,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:09,945 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:09:09,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:09:09,950 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:09:09,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-09 09:09:10,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:10,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-09 09:09:10,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:09:10,396 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-09 09:09:10,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851061366] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:09:10,397 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:09:10,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-11-09 09:09:10,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047326460] [2021-11-09 09:09:10,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 09:09:10,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:10,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 09:09:10,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-09 09:09:10,400 INFO L87 Difference]: Start difference. First operand 257 states and 352 transitions. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:10,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:10,465 INFO L93 Difference]: Finished difference Result 536 states and 733 transitions. [2021-11-09 09:09:10,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:09:10,466 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2021-11-09 09:09:10,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:10,467 INFO L225 Difference]: With dead ends: 536 [2021-11-09 09:09:10,468 INFO L226 Difference]: Without dead ends: 298 [2021-11-09 09:09:10,468 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-09 09:09:10,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2021-11-09 09:09:10,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2021-11-09 09:09:10,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 296 states have (on average 1.3547297297297298) internal successors, (401), 297 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:10,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 401 transitions. [2021-11-09 09:09:10,480 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 401 transitions. Word has length 121 [2021-11-09 09:09:10,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:10,481 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 401 transitions. [2021-11-09 09:09:10,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:10,481 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 401 transitions. [2021-11-09 09:09:10,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-11-09 09:09:10,507 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:10,507 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:10,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-09 09:09:10,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:09:10,723 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 09:09:10,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:10,723 INFO L85 PathProgramCache]: Analyzing trace with hash 51777678, now seen corresponding path program 2 times [2021-11-09 09:09:10,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:10,724 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568961760] [2021-11-09 09:09:10,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:10,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:10,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:10,845 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-09 09:09:10,845 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:10,845 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568961760] [2021-11-09 09:09:10,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568961760] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:10,846 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:10,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 09:09:10,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678503101] [2021-11-09 09:09:10,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:09:10,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:10,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:09:10,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:09:10,849 INFO L87 Difference]: Start difference. First operand 298 states and 401 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:10,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:10,939 INFO L93 Difference]: Finished difference Result 634 states and 893 transitions. [2021-11-09 09:09:10,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:09:10,940 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 158 [2021-11-09 09:09:10,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:10,943 INFO L225 Difference]: With dead ends: 634 [2021-11-09 09:09:10,944 INFO L226 Difference]: Without dead ends: 480 [2021-11-09 09:09:10,944 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:09:10,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2021-11-09 09:09:10,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 384. [2021-11-09 09:09:10,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 382 states have (on average 1.369109947643979) internal successors, (523), 383 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:10,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 523 transitions. [2021-11-09 09:09:10,974 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 523 transitions. Word has length 158 [2021-11-09 09:09:10,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:10,974 INFO L470 AbstractCegarLoop]: Abstraction has 384 states and 523 transitions. [2021-11-09 09:09:10,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:10,975 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 523 transitions. [2021-11-09 09:09:10,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-11-09 09:09:10,977 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:10,978 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:10,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-09 09:09:10,978 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 09:09:10,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:10,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1613997843, now seen corresponding path program 1 times [2021-11-09 09:09:10,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:10,979 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516217579] [2021-11-09 09:09:10,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:10,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:11,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:11,061 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-09 09:09:11,061 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:11,061 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516217579] [2021-11-09 09:09:11,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516217579] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:11,061 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:11,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:09:11,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028322920] [2021-11-09 09:09:11,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:09:11,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:11,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:09:11,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:09:11,065 INFO L87 Difference]: Start difference. First operand 384 states and 523 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 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) [2021-11-09 09:09:11,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:11,108 INFO L93 Difference]: Finished difference Result 796 states and 1128 transitions. [2021-11-09 09:09:11,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:09:11,109 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 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) Word has length 178 [2021-11-09 09:09:11,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:11,113 INFO L225 Difference]: With dead ends: 796 [2021-11-09 09:09:11,113 INFO L226 Difference]: Without dead ends: 597 [2021-11-09 09:09:11,115 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:09:11,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2021-11-09 09:09:11,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 457. [2021-11-09 09:09:11,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 455 states have (on average 1.3714285714285714) internal successors, (624), 456 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:11,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 624 transitions. [2021-11-09 09:09:11,146 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 624 transitions. Word has length 178 [2021-11-09 09:09:11,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:11,147 INFO L470 AbstractCegarLoop]: Abstraction has 457 states and 624 transitions. [2021-11-09 09:09:11,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 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) [2021-11-09 09:09:11,148 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 624 transitions. [2021-11-09 09:09:11,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-11-09 09:09:11,150 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:11,150 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:11,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-09 09:09:11,151 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 09:09:11,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:11,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1823165851, now seen corresponding path program 1 times [2021-11-09 09:09:11,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:11,152 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877048903] [2021-11-09 09:09:11,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:11,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:11,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:11,244 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-09 09:09:11,244 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:11,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877048903] [2021-11-09 09:09:11,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877048903] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:11,245 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:11,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:09:11,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352756210] [2021-11-09 09:09:11,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:09:11,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:11,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:09:11,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:09:11,247 INFO L87 Difference]: Start difference. First operand 457 states and 624 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:11,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:11,296 INFO L93 Difference]: Finished difference Result 949 states and 1342 transitions. [2021-11-09 09:09:11,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:09:11,296 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 179 [2021-11-09 09:09:11,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:11,301 INFO L225 Difference]: With dead ends: 949 [2021-11-09 09:09:11,301 INFO L226 Difference]: Without dead ends: 706 [2021-11-09 09:09:11,302 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:09:11,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2021-11-09 09:09:11,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 553. [2021-11-09 09:09:11,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 551 states have (on average 1.3756805807622505) internal successors, (758), 552 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:11,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 758 transitions. [2021-11-09 09:09:11,363 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 758 transitions. Word has length 179 [2021-11-09 09:09:11,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:11,364 INFO L470 AbstractCegarLoop]: Abstraction has 553 states and 758 transitions. [2021-11-09 09:09:11,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:11,365 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 758 transitions. [2021-11-09 09:09:11,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-11-09 09:09:11,367 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:11,368 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:11,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-09 09:09:11,368 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 09:09:11,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:11,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1693562478, now seen corresponding path program 1 times [2021-11-09 09:09:11,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:11,369 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315531987] [2021-11-09 09:09:11,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:11,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:11,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:11,477 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-09 09:09:11,478 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:11,478 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315531987] [2021-11-09 09:09:11,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315531987] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:11,478 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:11,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:09:11,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325498667] [2021-11-09 09:09:11,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:09:11,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:11,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:09:11,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:09:11,481 INFO L87 Difference]: Start difference. First operand 553 states and 758 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:11,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:11,540 INFO L93 Difference]: Finished difference Result 1123 states and 1592 transitions. [2021-11-09 09:09:11,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:09:11,541 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2021-11-09 09:09:11,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:11,547 INFO L225 Difference]: With dead ends: 1123 [2021-11-09 09:09:11,547 INFO L226 Difference]: Without dead ends: 816 [2021-11-09 09:09:11,548 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:09:11,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2021-11-09 09:09:11,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 635. [2021-11-09 09:09:11,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 633 states have (on average 1.387045813586098) internal successors, (878), 634 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:11,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 878 transitions. [2021-11-09 09:09:11,592 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 878 transitions. Word has length 180 [2021-11-09 09:09:11,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:11,593 INFO L470 AbstractCegarLoop]: Abstraction has 635 states and 878 transitions. [2021-11-09 09:09:11,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:11,593 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 878 transitions. [2021-11-09 09:09:11,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-11-09 09:09:11,596 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:11,596 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:11,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-09 09:09:11,597 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 09:09:11,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:11,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1912417196, now seen corresponding path program 1 times [2021-11-09 09:09:11,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:11,598 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672457002] [2021-11-09 09:09:11,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:11,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:11,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:11,673 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-09 09:09:11,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:11,674 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672457002] [2021-11-09 09:09:11,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672457002] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:11,674 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:11,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 09:09:11,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666637630] [2021-11-09 09:09:11,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:09:11,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:11,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:09:11,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:09:11,676 INFO L87 Difference]: Start difference. First operand 635 states and 878 transitions. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:11,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:11,815 INFO L93 Difference]: Finished difference Result 1279 states and 1762 transitions. [2021-11-09 09:09:11,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-09 09:09:11,816 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2021-11-09 09:09:11,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:11,821 INFO L225 Difference]: With dead ends: 1279 [2021-11-09 09:09:11,821 INFO L226 Difference]: Without dead ends: 898 [2021-11-09 09:09:11,822 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-09 09:09:11,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2021-11-09 09:09:11,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 635. [2021-11-09 09:09:11,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 633 states have (on average 1.3728278041074249) internal successors, (869), 634 states have internal predecessors, (869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:11,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 869 transitions. [2021-11-09 09:09:11,864 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 869 transitions. Word has length 180 [2021-11-09 09:09:11,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:11,865 INFO L470 AbstractCegarLoop]: Abstraction has 635 states and 869 transitions. [2021-11-09 09:09:11,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:11,865 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 869 transitions. [2021-11-09 09:09:11,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-11-09 09:09:11,868 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:11,868 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:11,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-09 09:09:11,869 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 09:09:11,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:11,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1032422361, now seen corresponding path program 1 times [2021-11-09 09:09:11,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:11,870 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968654785] [2021-11-09 09:09:11,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:11,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:11,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:11,943 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-09 09:09:11,943 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:11,943 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968654785] [2021-11-09 09:09:11,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968654785] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:11,944 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:11,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 09:09:11,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201705103] [2021-11-09 09:09:11,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:09:11,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:11,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:09:11,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:09:11,946 INFO L87 Difference]: Start difference. First operand 635 states and 869 transitions. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:12,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:12,129 INFO L93 Difference]: Finished difference Result 1495 states and 2082 transitions. [2021-11-09 09:09:12,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 09:09:12,130 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2021-11-09 09:09:12,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:12,136 INFO L225 Difference]: With dead ends: 1495 [2021-11-09 09:09:12,136 INFO L226 Difference]: Without dead ends: 1114 [2021-11-09 09:09:12,137 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-09 09:09:12,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2021-11-09 09:09:12,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 635. [2021-11-09 09:09:12,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 633 states have (on average 1.3712480252764614) internal successors, (868), 634 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:12,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 868 transitions. [2021-11-09 09:09:12,201 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 868 transitions. Word has length 181 [2021-11-09 09:09:12,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:12,201 INFO L470 AbstractCegarLoop]: Abstraction has 635 states and 868 transitions. [2021-11-09 09:09:12,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:12,203 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 868 transitions. [2021-11-09 09:09:12,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-11-09 09:09:12,205 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:12,205 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:12,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-09 09:09:12,206 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 09:09:12,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:12,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1734861802, now seen corresponding path program 1 times [2021-11-09 09:09:12,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:12,207 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221247924] [2021-11-09 09:09:12,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:12,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:12,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:12,352 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-09 09:09:12,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:12,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221247924] [2021-11-09 09:09:12,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221247924] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:12,353 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:12,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-09 09:09:12,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789931902] [2021-11-09 09:09:12,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 09:09:12,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:12,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 09:09:12,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-09 09:09:12,355 INFO L87 Difference]: Start difference. First operand 635 states and 868 transitions. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:12,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:12,508 INFO L93 Difference]: Finished difference Result 1042 states and 1445 transitions. [2021-11-09 09:09:12,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-09 09:09:12,508 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 182 [2021-11-09 09:09:12,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:12,515 INFO L225 Difference]: With dead ends: 1042 [2021-11-09 09:09:12,515 INFO L226 Difference]: Without dead ends: 1040 [2021-11-09 09:09:12,516 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-09 09:09:12,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1040 states. [2021-11-09 09:09:12,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1040 to 637. [2021-11-09 09:09:12,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 635 states have (on average 1.3700787401574803) internal successors, (870), 636 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:12,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 870 transitions. [2021-11-09 09:09:12,568 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 870 transitions. Word has length 182 [2021-11-09 09:09:12,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:12,568 INFO L470 AbstractCegarLoop]: Abstraction has 637 states and 870 transitions. [2021-11-09 09:09:12,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:12,569 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 870 transitions. [2021-11-09 09:09:12,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-11-09 09:09:12,571 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:12,572 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:12,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-09 09:09:12,572 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 09:09:12,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:12,573 INFO L85 PathProgramCache]: Analyzing trace with hash -20917711, now seen corresponding path program 1 times [2021-11-09 09:09:12,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:12,573 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392973482] [2021-11-09 09:09:12,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:12,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:12,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:12,697 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-11-09 09:09:12,697 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:12,697 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392973482] [2021-11-09 09:09:12,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392973482] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:09:12,698 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384664084] [2021-11-09 09:09:12,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:12,698 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:09:12,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:09:12,699 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:09:12,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-09 09:09:12,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:12,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 761 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-09 09:09:12,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:09:13,433 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-11-09 09:09:13,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384664084] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:09:13,434 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:09:13,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2021-11-09 09:09:13,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269645661] [2021-11-09 09:09:13,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:09:13,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:13,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:09:13,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:09:13,436 INFO L87 Difference]: Start difference. First operand 637 states and 870 transitions. Second operand has 11 states, 11 states have (on average 11.181818181818182) internal successors, (123), 11 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:14,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:14,186 INFO L93 Difference]: Finished difference Result 3833 states and 5430 transitions. [2021-11-09 09:09:14,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-09 09:09:14,186 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.181818181818182) internal successors, (123), 11 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2021-11-09 09:09:14,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:14,205 INFO L225 Difference]: With dead ends: 3833 [2021-11-09 09:09:14,206 INFO L226 Difference]: Without dead ends: 3450 [2021-11-09 09:09:14,207 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=158, Invalid=598, Unknown=0, NotChecked=0, Total=756 [2021-11-09 09:09:14,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3450 states. [2021-11-09 09:09:14,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3450 to 871. [2021-11-09 09:09:14,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 871 states, 869 states have (on average 1.3532796317606444) internal successors, (1176), 870 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:14,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 871 states to 871 states and 1176 transitions. [2021-11-09 09:09:14,301 INFO L78 Accepts]: Start accepts. Automaton has 871 states and 1176 transitions. Word has length 185 [2021-11-09 09:09:14,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:14,302 INFO L470 AbstractCegarLoop]: Abstraction has 871 states and 1176 transitions. [2021-11-09 09:09:14,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.181818181818182) internal successors, (123), 11 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:14,302 INFO L276 IsEmpty]: Start isEmpty. Operand 871 states and 1176 transitions. [2021-11-09 09:09:14,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-11-09 09:09:14,305 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:14,306 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:14,342 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-09 09:09:14,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-11-09 09:09:14,521 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 09:09:14,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:14,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1300781389, now seen corresponding path program 1 times [2021-11-09 09:09:14,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:14,522 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519066897] [2021-11-09 09:09:14,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:14,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:14,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:14,582 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-09 09:09:14,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:14,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519066897] [2021-11-09 09:09:14,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519066897] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:14,583 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:14,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:09:14,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928182809] [2021-11-09 09:09:14,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:09:14,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:14,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:09:14,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:09:14,585 INFO L87 Difference]: Start difference. First operand 871 states and 1176 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 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) [2021-11-09 09:09:14,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:14,743 INFO L93 Difference]: Finished difference Result 1941 states and 2659 transitions. [2021-11-09 09:09:14,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:09:14,743 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 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 185 [2021-11-09 09:09:14,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:14,752 INFO L225 Difference]: With dead ends: 1941 [2021-11-09 09:09:14,752 INFO L226 Difference]: Without dead ends: 1558 [2021-11-09 09:09:14,753 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:09:14,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1558 states. [2021-11-09 09:09:14,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1558 to 871. [2021-11-09 09:09:14,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 871 states, 869 states have (on average 1.3509781357882624) internal successors, (1174), 870 states have internal predecessors, (1174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:14,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 871 states to 871 states and 1174 transitions. [2021-11-09 09:09:14,870 INFO L78 Accepts]: Start accepts. Automaton has 871 states and 1174 transitions. Word has length 185 [2021-11-09 09:09:14,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:14,870 INFO L470 AbstractCegarLoop]: Abstraction has 871 states and 1174 transitions. [2021-11-09 09:09:14,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 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) [2021-11-09 09:09:14,871 INFO L276 IsEmpty]: Start isEmpty. Operand 871 states and 1174 transitions. [2021-11-09 09:09:14,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-11-09 09:09:14,874 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:14,875 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:14,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-09 09:09:14,875 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 09:09:14,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:14,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1917824077, now seen corresponding path program 1 times [2021-11-09 09:09:14,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:14,876 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467996031] [2021-11-09 09:09:14,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:14,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:14,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:14,931 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-11-09 09:09:14,932 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:14,932 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467996031] [2021-11-09 09:09:14,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467996031] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:14,932 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:14,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:09:14,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070907285] [2021-11-09 09:09:14,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:09:14,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:14,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:09:14,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:09:14,935 INFO L87 Difference]: Start difference. First operand 871 states and 1174 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:15,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:15,028 INFO L93 Difference]: Finished difference Result 1463 states and 1989 transitions. [2021-11-09 09:09:15,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:09:15,029 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2021-11-09 09:09:15,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:15,034 INFO L225 Difference]: With dead ends: 1463 [2021-11-09 09:09:15,034 INFO L226 Difference]: Without dead ends: 713 [2021-11-09 09:09:15,035 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:09:15,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2021-11-09 09:09:15,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 712. [2021-11-09 09:09:15,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 712 states, 710 states have (on average 1.3253521126760563) internal successors, (941), 711 states have internal predecessors, (941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:15,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 941 transitions. [2021-11-09 09:09:15,107 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 941 transitions. Word has length 188 [2021-11-09 09:09:15,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:15,108 INFO L470 AbstractCegarLoop]: Abstraction has 712 states and 941 transitions. [2021-11-09 09:09:15,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:15,109 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 941 transitions. [2021-11-09 09:09:15,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-11-09 09:09:15,112 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:15,112 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:15,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-09 09:09:15,113 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 09:09:15,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:15,113 INFO L85 PathProgramCache]: Analyzing trace with hash -851083593, now seen corresponding path program 1 times [2021-11-09 09:09:15,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:15,114 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778119542] [2021-11-09 09:09:15,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:15,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:15,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:15,270 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-09 09:09:15,270 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:15,271 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778119542] [2021-11-09 09:09:15,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778119542] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:15,271 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:15,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-09 09:09:15,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964392041] [2021-11-09 09:09:15,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 09:09:15,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:15,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 09:09:15,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-09 09:09:15,272 INFO L87 Difference]: Start difference. First operand 712 states and 941 transitions. Second operand has 9 states, 9 states have (on average 13.222222222222221) internal successors, (119), 9 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:16,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:16,031 INFO L93 Difference]: Finished difference Result 2259 states and 2987 transitions. [2021-11-09 09:09:16,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-09 09:09:16,031 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.222222222222221) internal successors, (119), 9 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 193 [2021-11-09 09:09:16,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:16,041 INFO L225 Difference]: With dead ends: 2259 [2021-11-09 09:09:16,042 INFO L226 Difference]: Without dead ends: 1887 [2021-11-09 09:09:16,043 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=133, Invalid=419, Unknown=0, NotChecked=0, Total=552 [2021-11-09 09:09:16,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1887 states. [2021-11-09 09:09:16,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1887 to 1051. [2021-11-09 09:09:16,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1051 states, 1049 states have (on average 1.2964728312678742) internal successors, (1360), 1050 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:16,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 1360 transitions. [2021-11-09 09:09:16,139 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 1360 transitions. Word has length 193 [2021-11-09 09:09:16,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:16,140 INFO L470 AbstractCegarLoop]: Abstraction has 1051 states and 1360 transitions. [2021-11-09 09:09:16,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.222222222222221) internal successors, (119), 9 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:16,140 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 1360 transitions. [2021-11-09 09:09:16,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-11-09 09:09:16,143 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:16,143 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:16,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-09 09:09:16,144 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 09:09:16,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:16,145 INFO L85 PathProgramCache]: Analyzing trace with hash -851544751, now seen corresponding path program 1 times [2021-11-09 09:09:16,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:16,145 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168813868] [2021-11-09 09:09:16,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:16,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:16,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:16,244 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-09 09:09:16,244 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:16,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168813868] [2021-11-09 09:09:16,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168813868] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:16,245 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:16,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-09 09:09:16,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029502290] [2021-11-09 09:09:16,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 09:09:16,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:16,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 09:09:16,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-09 09:09:16,249 INFO L87 Difference]: Start difference. First operand 1051 states and 1360 transitions. Second operand has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:16,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:16,555 INFO L93 Difference]: Finished difference Result 3458 states and 4509 transitions. [2021-11-09 09:09:16,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 09:09:16,556 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 199 [2021-11-09 09:09:16,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:16,563 INFO L225 Difference]: With dead ends: 3458 [2021-11-09 09:09:16,563 INFO L226 Difference]: Without dead ends: 2741 [2021-11-09 09:09:16,565 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-09 09:09:16,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2741 states. [2021-11-09 09:09:16,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2741 to 1180. [2021-11-09 09:09:16,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1180 states, 1178 states have (on average 1.2920203735144313) internal successors, (1522), 1179 states have internal predecessors, (1522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:16,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1180 states to 1180 states and 1522 transitions. [2021-11-09 09:09:16,685 INFO L78 Accepts]: Start accepts. Automaton has 1180 states and 1522 transitions. Word has length 199 [2021-11-09 09:09:16,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:16,685 INFO L470 AbstractCegarLoop]: Abstraction has 1180 states and 1522 transitions. [2021-11-09 09:09:16,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:16,686 INFO L276 IsEmpty]: Start isEmpty. Operand 1180 states and 1522 transitions. [2021-11-09 09:09:16,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-11-09 09:09:16,689 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:16,689 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:16,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-09 09:09:16,690 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 09:09:16,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:16,690 INFO L85 PathProgramCache]: Analyzing trace with hash -93221871, now seen corresponding path program 1 times [2021-11-09 09:09:16,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:16,691 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448766711] [2021-11-09 09:09:16,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:16,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:16,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:16,872 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-09 09:09:16,872 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:16,872 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448766711] [2021-11-09 09:09:16,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448766711] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:16,873 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:16,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-09 09:09:16,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827418996] [2021-11-09 09:09:16,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-09 09:09:16,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:16,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-09 09:09:16,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-09 09:09:16,875 INFO L87 Difference]: Start difference. First operand 1180 states and 1522 transitions. Second operand has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:18,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:18,583 INFO L93 Difference]: Finished difference Result 4493 states and 5842 transitions. [2021-11-09 09:09:18,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-09 09:09:18,584 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 199 [2021-11-09 09:09:18,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:18,593 INFO L225 Difference]: With dead ends: 4493 [2021-11-09 09:09:18,594 INFO L226 Difference]: Without dead ends: 3650 [2021-11-09 09:09:18,597 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=322, Invalid=1238, Unknown=0, NotChecked=0, Total=1560 [2021-11-09 09:09:18,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3650 states. [2021-11-09 09:09:18,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3650 to 1243. [2021-11-09 09:09:18,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1243 states, 1241 states have (on average 1.2836422240128929) internal successors, (1593), 1242 states have internal predecessors, (1593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:18,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1243 states to 1243 states and 1593 transitions. [2021-11-09 09:09:18,768 INFO L78 Accepts]: Start accepts. Automaton has 1243 states and 1593 transitions. Word has length 199 [2021-11-09 09:09:18,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:18,769 INFO L470 AbstractCegarLoop]: Abstraction has 1243 states and 1593 transitions. [2021-11-09 09:09:18,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:18,769 INFO L276 IsEmpty]: Start isEmpty. Operand 1243 states and 1593 transitions. [2021-11-09 09:09:18,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-11-09 09:09:18,772 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:18,772 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:18,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-09 09:09:18,773 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 09:09:18,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:18,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1815354803, now seen corresponding path program 1 times [2021-11-09 09:09:18,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:18,774 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455350153] [2021-11-09 09:09:18,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:18,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:18,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:18,961 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-09 09:09:18,961 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:18,961 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455350153] [2021-11-09 09:09:18,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455350153] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:18,962 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:18,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-09 09:09:18,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951718914] [2021-11-09 09:09:18,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 09:09:18,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:18,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 09:09:18,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-09 09:09:18,964 INFO L87 Difference]: Start difference. First operand 1243 states and 1593 transitions. Second operand has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:19,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:19,965 INFO L93 Difference]: Finished difference Result 3161 states and 4094 transitions. [2021-11-09 09:09:19,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-09 09:09:19,966 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 199 [2021-11-09 09:09:19,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:19,971 INFO L225 Difference]: With dead ends: 3161 [2021-11-09 09:09:19,972 INFO L226 Difference]: Without dead ends: 2250 [2021-11-09 09:09:19,974 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=154, Invalid=496, Unknown=0, NotChecked=0, Total=650 [2021-11-09 09:09:19,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2250 states. [2021-11-09 09:09:20,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2250 to 1199. [2021-11-09 09:09:20,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1199 states, 1197 states have (on average 1.2832080200501252) internal successors, (1536), 1198 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:20,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1199 states to 1199 states and 1536 transitions. [2021-11-09 09:09:20,103 INFO L78 Accepts]: Start accepts. Automaton has 1199 states and 1536 transitions. Word has length 199 [2021-11-09 09:09:20,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:20,104 INFO L470 AbstractCegarLoop]: Abstraction has 1199 states and 1536 transitions. [2021-11-09 09:09:20,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:20,104 INFO L276 IsEmpty]: Start isEmpty. Operand 1199 states and 1536 transitions. [2021-11-09 09:09:20,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-11-09 09:09:20,108 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:20,108 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:20,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-09 09:09:20,109 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 09:09:20,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:20,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1721284693, now seen corresponding path program 1 times [2021-11-09 09:09:20,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:20,110 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199617283] [2021-11-09 09:09:20,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:20,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:20,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:20,180 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2021-11-09 09:09:20,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:20,180 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199617283] [2021-11-09 09:09:20,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199617283] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:20,180 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:20,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 09:09:20,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364965450] [2021-11-09 09:09:20,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:09:20,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:20,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:09:20,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:09:20,183 INFO L87 Difference]: Start difference. First operand 1199 states and 1536 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:20,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:20,451 INFO L93 Difference]: Finished difference Result 2264 states and 2917 transitions. [2021-11-09 09:09:20,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:09:20,451 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 207 [2021-11-09 09:09:20,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:20,454 INFO L225 Difference]: With dead ends: 2264 [2021-11-09 09:09:20,454 INFO L226 Difference]: Without dead ends: 1405 [2021-11-09 09:09:20,456 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:09:20,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1405 states. [2021-11-09 09:09:20,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1405 to 1100. [2021-11-09 09:09:20,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1100 states, 1099 states have (on average 1.2611464968152866) internal successors, (1386), 1099 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:20,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1100 states to 1100 states and 1386 transitions. [2021-11-09 09:09:20,567 INFO L78 Accepts]: Start accepts. Automaton has 1100 states and 1386 transitions. Word has length 207 [2021-11-09 09:09:20,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:20,567 INFO L470 AbstractCegarLoop]: Abstraction has 1100 states and 1386 transitions. [2021-11-09 09:09:20,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:20,568 INFO L276 IsEmpty]: Start isEmpty. Operand 1100 states and 1386 transitions. [2021-11-09 09:09:20,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2021-11-09 09:09:20,572 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:20,573 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:20,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-09 09:09:20,573 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 09:09:20,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:20,574 INFO L85 PathProgramCache]: Analyzing trace with hash 773001460, now seen corresponding path program 1 times [2021-11-09 09:09:20,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:20,574 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207960277] [2021-11-09 09:09:20,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:20,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:20,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:20,795 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 43 proven. 9 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-09 09:09:20,795 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:20,795 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207960277] [2021-11-09 09:09:20,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207960277] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:09:20,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54549931] [2021-11-09 09:09:20,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:20,796 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:09:20,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:09:20,801 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:09:20,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-09 09:09:21,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:21,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 958 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-09 09:09:21,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:09:21,762 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2021-11-09 09:09:21,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54549931] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:21,763 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:09:21,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2021-11-09 09:09:21,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175115477] [2021-11-09 09:09:21,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 09:09:21,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:21,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 09:09:21,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2021-11-09 09:09:21,766 INFO L87 Difference]: Start difference. First operand 1100 states and 1386 transitions. Second operand has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:22,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:22,297 INFO L93 Difference]: Finished difference Result 3183 states and 4001 transitions. [2021-11-09 09:09:22,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-09 09:09:22,298 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 234 [2021-11-09 09:09:22,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:22,303 INFO L225 Difference]: With dead ends: 3183 [2021-11-09 09:09:22,303 INFO L226 Difference]: Without dead ends: 2423 [2021-11-09 09:09:22,305 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2021-11-09 09:09:22,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2423 states. [2021-11-09 09:09:22,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2423 to 1142. [2021-11-09 09:09:22,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1142 states, 1141 states have (on average 1.2620508326029798) internal successors, (1440), 1141 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:22,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1142 states to 1142 states and 1440 transitions. [2021-11-09 09:09:22,445 INFO L78 Accepts]: Start accepts. Automaton has 1142 states and 1440 transitions. Word has length 234 [2021-11-09 09:09:22,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:22,445 INFO L470 AbstractCegarLoop]: Abstraction has 1142 states and 1440 transitions. [2021-11-09 09:09:22,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:22,446 INFO L276 IsEmpty]: Start isEmpty. Operand 1142 states and 1440 transitions. [2021-11-09 09:09:22,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2021-11-09 09:09:22,448 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:22,449 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:22,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-09 09:09:22,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-11-09 09:09:22,665 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 09:09:22,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:22,666 INFO L85 PathProgramCache]: Analyzing trace with hash 830259762, now seen corresponding path program 1 times [2021-11-09 09:09:22,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:22,666 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049957545] [2021-11-09 09:09:22,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:22,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:22,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:22,742 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2021-11-09 09:09:22,742 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:22,743 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049957545] [2021-11-09 09:09:22,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049957545] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:22,743 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:22,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:09:22,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927716910] [2021-11-09 09:09:22,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:09:22,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:22,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:09:22,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:09:22,745 INFO L87 Difference]: Start difference. First operand 1142 states and 1440 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:22,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:22,932 INFO L93 Difference]: Finished difference Result 2229 states and 2800 transitions. [2021-11-09 09:09:22,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:09:22,933 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 234 [2021-11-09 09:09:22,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:22,936 INFO L225 Difference]: With dead ends: 2229 [2021-11-09 09:09:22,936 INFO L226 Difference]: Without dead ends: 1390 [2021-11-09 09:09:22,938 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:09:22,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1390 states. [2021-11-09 09:09:23,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1390 to 1130. [2021-11-09 09:09:23,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1130 states, 1129 states have (on average 1.2338352524357838) internal successors, (1393), 1129 states have internal predecessors, (1393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:23,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1130 states to 1130 states and 1393 transitions. [2021-11-09 09:09:23,074 INFO L78 Accepts]: Start accepts. Automaton has 1130 states and 1393 transitions. Word has length 234 [2021-11-09 09:09:23,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:23,074 INFO L470 AbstractCegarLoop]: Abstraction has 1130 states and 1393 transitions. [2021-11-09 09:09:23,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:23,075 INFO L276 IsEmpty]: Start isEmpty. Operand 1130 states and 1393 transitions. [2021-11-09 09:09:23,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2021-11-09 09:09:23,078 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:23,078 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:23,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-09 09:09:23,079 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 09:09:23,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:23,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1202469982, now seen corresponding path program 1 times [2021-11-09 09:09:23,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:23,079 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063447619] [2021-11-09 09:09:23,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:23,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:23,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:23,260 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 9 proven. 34 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-09 09:09:23,260 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:23,260 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063447619] [2021-11-09 09:09:23,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063447619] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:09:23,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131489512] [2021-11-09 09:09:23,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:23,261 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:09:23,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:09:23,265 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:09:23,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-09 09:09:23,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:23,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 978 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-09 09:09:23,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:09:24,240 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 9 proven. 34 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-09 09:09:24,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131489512] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:09:24,241 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:09:24,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 9 [2021-11-09 09:09:24,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130453403] [2021-11-09 09:09:24,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 09:09:24,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:24,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 09:09:24,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-09 09:09:24,244 INFO L87 Difference]: Start difference. First operand 1130 states and 1393 transitions. Second operand has 9 states, 9 states have (on average 21.0) internal successors, (189), 9 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) [2021-11-09 09:09:25,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:25,325 INFO L93 Difference]: Finished difference Result 4643 states and 5734 transitions. [2021-11-09 09:09:25,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-09 09:09:25,326 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 21.0) internal successors, (189), 9 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 240 [2021-11-09 09:09:25,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:25,335 INFO L225 Difference]: With dead ends: 4643 [2021-11-09 09:09:25,335 INFO L226 Difference]: Without dead ends: 3853 [2021-11-09 09:09:25,338 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 239 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 507 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=384, Invalid=1338, Unknown=0, NotChecked=0, Total=1722 [2021-11-09 09:09:25,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3853 states. [2021-11-09 09:09:25,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3853 to 1841. [2021-11-09 09:09:25,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1841 states, 1840 states have (on average 1.232608695652174) internal successors, (2268), 1840 states have internal predecessors, (2268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:25,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1841 states to 1841 states and 2268 transitions. [2021-11-09 09:09:25,609 INFO L78 Accepts]: Start accepts. Automaton has 1841 states and 2268 transitions. Word has length 240 [2021-11-09 09:09:25,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:25,610 INFO L470 AbstractCegarLoop]: Abstraction has 1841 states and 2268 transitions. [2021-11-09 09:09:25,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 21.0) internal successors, (189), 9 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) [2021-11-09 09:09:25,611 INFO L276 IsEmpty]: Start isEmpty. Operand 1841 states and 2268 transitions. [2021-11-09 09:09:25,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2021-11-09 09:09:25,615 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:25,615 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:25,653 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-09 09:09:25,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-11-09 09:09:25,841 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 09:09:25,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:25,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1026505546, now seen corresponding path program 1 times [2021-11-09 09:09:25,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:25,842 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495718327] [2021-11-09 09:09:25,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:25,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:25,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:26,019 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 8 proven. 35 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-09 09:09:26,019 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:26,020 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495718327] [2021-11-09 09:09:26,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495718327] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:09:26,020 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559229459] [2021-11-09 09:09:26,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:26,020 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:09:26,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:09:26,021 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:09:26,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-09 09:09:26,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:26,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 977 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-09 09:09:26,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:09:27,062 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 8 proven. 35 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-09 09:09:27,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559229459] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:09:27,062 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:09:27,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 9 [2021-11-09 09:09:27,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077996396] [2021-11-09 09:09:27,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 09:09:27,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:27,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 09:09:27,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-09 09:09:27,064 INFO L87 Difference]: Start difference. First operand 1841 states and 2268 transitions. Second operand has 9 states, 9 states have (on average 20.444444444444443) internal successors, (184), 9 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:28,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:28,507 INFO L93 Difference]: Finished difference Result 9543 states and 11788 transitions. [2021-11-09 09:09:28,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-09 09:09:28,508 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 20.444444444444443) internal successors, (184), 9 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 240 [2021-11-09 09:09:28,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:28,527 INFO L225 Difference]: With dead ends: 9543 [2021-11-09 09:09:28,527 INFO L226 Difference]: Without dead ends: 8085 [2021-11-09 09:09:28,532 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 247 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=340, Invalid=1382, Unknown=0, NotChecked=0, Total=1722 [2021-11-09 09:09:28,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8085 states. [2021-11-09 09:09:29,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8085 to 4895. [2021-11-09 09:09:29,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4895 states, 4894 states have (on average 1.210053126277074) internal successors, (5922), 4894 states have internal predecessors, (5922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:29,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4895 states to 4895 states and 5922 transitions. [2021-11-09 09:09:29,195 INFO L78 Accepts]: Start accepts. Automaton has 4895 states and 5922 transitions. Word has length 240 [2021-11-09 09:09:29,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:29,196 INFO L470 AbstractCegarLoop]: Abstraction has 4895 states and 5922 transitions. [2021-11-09 09:09:29,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 20.444444444444443) internal successors, (184), 9 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:29,196 INFO L276 IsEmpty]: Start isEmpty. Operand 4895 states and 5922 transitions. [2021-11-09 09:09:29,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2021-11-09 09:09:29,206 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:29,206 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:29,249 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-09 09:09:29,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:09:29,434 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 09:09:29,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:29,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1175248514, now seen corresponding path program 1 times [2021-11-09 09:09:29,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:29,434 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131149570] [2021-11-09 09:09:29,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:29,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:29,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:29,699 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 20 proven. 19 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-09 09:09:29,699 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:29,699 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131149570] [2021-11-09 09:09:29,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131149570] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:09:29,700 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330596612] [2021-11-09 09:09:29,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:29,700 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:09:29,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:09:29,701 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:09:29,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-09 09:09:30,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:30,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 996 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-09 09:09:30,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:09:30,813 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2021-11-09 09:09:30,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [330596612] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:30,814 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:09:30,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [15] total 18 [2021-11-09 09:09:30,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884312102] [2021-11-09 09:09:30,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:09:30,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:30,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:09:30,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2021-11-09 09:09:30,816 INFO L87 Difference]: Start difference. First operand 4895 states and 5922 transitions. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 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) [2021-11-09 09:09:31,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:31,547 INFO L93 Difference]: Finished difference Result 9396 states and 11366 transitions. [2021-11-09 09:09:31,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:09:31,547 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 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) Word has length 241 [2021-11-09 09:09:31,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:31,558 INFO L225 Difference]: With dead ends: 9396 [2021-11-09 09:09:31,558 INFO L226 Difference]: Without dead ends: 4752 [2021-11-09 09:09:31,563 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2021-11-09 09:09:31,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4752 states. [2021-11-09 09:09:32,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4752 to 4752. [2021-11-09 09:09:32,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4752 states, 4751 states have (on average 1.200168385603031) internal successors, (5702), 4751 states have internal predecessors, (5702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:32,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4752 states to 4752 states and 5702 transitions. [2021-11-09 09:09:32,052 INFO L78 Accepts]: Start accepts. Automaton has 4752 states and 5702 transitions. Word has length 241 [2021-11-09 09:09:32,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:32,052 INFO L470 AbstractCegarLoop]: Abstraction has 4752 states and 5702 transitions. [2021-11-09 09:09:32,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 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) [2021-11-09 09:09:32,053 INFO L276 IsEmpty]: Start isEmpty. Operand 4752 states and 5702 transitions. [2021-11-09 09:09:32,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2021-11-09 09:09:32,064 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:32,064 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:32,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-09 09:09:32,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-11-09 09:09:32,278 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 09:09:32,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:32,278 INFO L85 PathProgramCache]: Analyzing trace with hash -2074246792, now seen corresponding path program 1 times [2021-11-09 09:09:32,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:32,278 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284448847] [2021-11-09 09:09:32,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:32,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:32,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:32,558 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 20 proven. 24 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-09 09:09:32,559 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:32,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284448847] [2021-11-09 09:09:32,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284448847] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:09:32,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992473839] [2021-11-09 09:09:32,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:32,560 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:09:32,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:09:32,561 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:09:32,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-09 09:09:33,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:33,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 1014 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-09 09:09:33,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:09:34,050 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 36 proven. 13 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-11-09 09:09:34,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992473839] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:09:34,051 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:09:34,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9] total 23 [2021-11-09 09:09:34,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093842904] [2021-11-09 09:09:34,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-09 09:09:34,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:34,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-09 09:09:34,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=459, Unknown=0, NotChecked=0, Total=506 [2021-11-09 09:09:34,054 INFO L87 Difference]: Start difference. First operand 4752 states and 5702 transitions. Second operand has 23 states, 23 states have (on average 13.043478260869565) internal successors, (300), 23 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:37,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:37,847 INFO L93 Difference]: Finished difference Result 14904 states and 18398 transitions. [2021-11-09 09:09:37,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-11-09 09:09:37,847 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 13.043478260869565) internal successors, (300), 23 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 242 [2021-11-09 09:09:37,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:37,871 INFO L225 Difference]: With dead ends: 14904 [2021-11-09 09:09:37,872 INFO L226 Difference]: Without dead ends: 10586 [2021-11-09 09:09:37,880 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1866 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=781, Invalid=6191, Unknown=0, NotChecked=0, Total=6972 [2021-11-09 09:09:37,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10586 states. [2021-11-09 09:09:38,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10586 to 5989. [2021-11-09 09:09:38,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5989 states, 5988 states have (on average 1.2130928523714095) internal successors, (7264), 5988 states have internal predecessors, (7264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:38,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5989 states to 5989 states and 7264 transitions. [2021-11-09 09:09:38,655 INFO L78 Accepts]: Start accepts. Automaton has 5989 states and 7264 transitions. Word has length 242 [2021-11-09 09:09:38,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:38,656 INFO L470 AbstractCegarLoop]: Abstraction has 5989 states and 7264 transitions. [2021-11-09 09:09:38,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 13.043478260869565) internal successors, (300), 23 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:38,656 INFO L276 IsEmpty]: Start isEmpty. Operand 5989 states and 7264 transitions. [2021-11-09 09:09:38,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2021-11-09 09:09:38,670 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:38,670 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:38,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-09 09:09:38,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:09:38,897 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 09:09:38,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:38,898 INFO L85 PathProgramCache]: Analyzing trace with hash 2138762645, now seen corresponding path program 1 times [2021-11-09 09:09:38,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:38,898 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615717670] [2021-11-09 09:09:38,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:38,899 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:38,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:38,953 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2021-11-09 09:09:38,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:38,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615717670] [2021-11-09 09:09:38,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615717670] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:38,954 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:38,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:09:38,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787242636] [2021-11-09 09:09:38,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:09:38,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:38,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:09:38,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:09:38,957 INFO L87 Difference]: Start difference. First operand 5989 states and 7264 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 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) [2021-11-09 09:09:39,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:39,583 INFO L93 Difference]: Finished difference Result 11536 states and 13978 transitions. [2021-11-09 09:09:39,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:09:39,583 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 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) Word has length 245 [2021-11-09 09:09:39,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:39,592 INFO L225 Difference]: With dead ends: 11536 [2021-11-09 09:09:39,592 INFO L226 Difference]: Without dead ends: 5560 [2021-11-09 09:09:39,599 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:09:39,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5560 states. [2021-11-09 09:09:40,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5560 to 5560. [2021-11-09 09:09:40,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5560 states, 5559 states have (on average 1.2088505126821372) internal successors, (6720), 5559 states have internal predecessors, (6720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:40,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5560 states to 5560 states and 6720 transitions. [2021-11-09 09:09:40,378 INFO L78 Accepts]: Start accepts. Automaton has 5560 states and 6720 transitions. Word has length 245 [2021-11-09 09:09:40,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:40,379 INFO L470 AbstractCegarLoop]: Abstraction has 5560 states and 6720 transitions. [2021-11-09 09:09:40,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 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) [2021-11-09 09:09:40,379 INFO L276 IsEmpty]: Start isEmpty. Operand 5560 states and 6720 transitions. [2021-11-09 09:09:40,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2021-11-09 09:09:40,388 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:40,388 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:40,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-09 09:09:40,389 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 09:09:40,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:40,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1344666588, now seen corresponding path program 1 times [2021-11-09 09:09:40,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:40,389 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525619606] [2021-11-09 09:09:40,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:40,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:40,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:40,500 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-11-09 09:09:40,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:40,500 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525619606] [2021-11-09 09:09:40,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525619606] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:40,501 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:40,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-09 09:09:40,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633537494] [2021-11-09 09:09:40,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 09:09:40,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:40,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 09:09:40,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-09 09:09:40,504 INFO L87 Difference]: Start difference. First operand 5560 states and 6720 transitions. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 7 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:42,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:42,022 INFO L93 Difference]: Finished difference Result 14824 states and 18008 transitions. [2021-11-09 09:09:42,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-09 09:09:42,022 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 7 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 248 [2021-11-09 09:09:42,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:42,037 INFO L225 Difference]: With dead ends: 14824 [2021-11-09 09:09:42,038 INFO L226 Difference]: Without dead ends: 10530 [2021-11-09 09:09:42,043 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2021-11-09 09:09:42,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10530 states. [2021-11-09 09:09:42,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10530 to 4154. [2021-11-09 09:09:42,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4154 states, 4153 states have (on average 1.206838430050566) internal successors, (5012), 4153 states have internal predecessors, (5012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:42,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4154 states to 4154 states and 5012 transitions. [2021-11-09 09:09:42,673 INFO L78 Accepts]: Start accepts. Automaton has 4154 states and 5012 transitions. Word has length 248 [2021-11-09 09:09:42,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:42,675 INFO L470 AbstractCegarLoop]: Abstraction has 4154 states and 5012 transitions. [2021-11-09 09:09:42,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 7 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:42,675 INFO L276 IsEmpty]: Start isEmpty. Operand 4154 states and 5012 transitions. [2021-11-09 09:09:42,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2021-11-09 09:09:42,683 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:42,683 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:42,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-11-09 09:09:42,684 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 09:09:42,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:42,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1407260196, now seen corresponding path program 2 times [2021-11-09 09:09:42,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:42,685 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282794920] [2021-11-09 09:09:42,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:42,685 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:42,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:42,788 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2021-11-09 09:09:42,788 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:42,789 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282794920] [2021-11-09 09:09:42,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282794920] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:42,789 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:42,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 09:09:42,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931231231] [2021-11-09 09:09:42,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:09:42,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:42,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:09:42,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:09:42,791 INFO L87 Difference]: Start difference. First operand 4154 states and 5012 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 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) [2021-11-09 09:09:43,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:43,495 INFO L93 Difference]: Finished difference Result 7978 states and 9656 transitions. [2021-11-09 09:09:43,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:09:43,495 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 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) Word has length 248 [2021-11-09 09:09:43,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:43,500 INFO L225 Difference]: With dead ends: 7978 [2021-11-09 09:09:43,500 INFO L226 Difference]: Without dead ends: 4612 [2021-11-09 09:09:43,503 INFO L786 BasicCegarLoop]: 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 [2021-11-09 09:09:43,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4612 states. [2021-11-09 09:09:44,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4612 to 4154. [2021-11-09 09:09:44,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4154 states, 4153 states have (on average 1.2041897423549242) internal successors, (5001), 4153 states have internal predecessors, (5001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:44,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4154 states to 4154 states and 5001 transitions. [2021-11-09 09:09:44,064 INFO L78 Accepts]: Start accepts. Automaton has 4154 states and 5001 transitions. Word has length 248 [2021-11-09 09:09:44,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:44,066 INFO L470 AbstractCegarLoop]: Abstraction has 4154 states and 5001 transitions. [2021-11-09 09:09:44,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 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) [2021-11-09 09:09:44,067 INFO L276 IsEmpty]: Start isEmpty. Operand 4154 states and 5001 transitions. [2021-11-09 09:09:44,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2021-11-09 09:09:44,079 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:44,080 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:44,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-09 09:09:44,081 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 09:09:44,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:44,081 INFO L85 PathProgramCache]: Analyzing trace with hash 159418464, now seen corresponding path program 1 times [2021-11-09 09:09:44,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:44,082 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990258612] [2021-11-09 09:09:44,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:44,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:44,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:44,178 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2021-11-09 09:09:44,179 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:44,179 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990258612] [2021-11-09 09:09:44,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990258612] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:44,179 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:44,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 09:09:44,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881148557] [2021-11-09 09:09:44,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:09:44,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:44,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:09:44,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:09:44,181 INFO L87 Difference]: Start difference. First operand 4154 states and 5001 transitions. Second operand has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 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) [2021-11-09 09:09:44,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:44,732 INFO L93 Difference]: Finished difference Result 7722 states and 9314 transitions. [2021-11-09 09:09:44,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:09:44,733 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 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) Word has length 248 [2021-11-09 09:09:44,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:44,736 INFO L225 Difference]: With dead ends: 7722 [2021-11-09 09:09:44,736 INFO L226 Difference]: Without dead ends: 4182 [2021-11-09 09:09:44,739 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-09 09:09:44,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4182 states. [2021-11-09 09:09:45,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4182 to 4175. [2021-11-09 09:09:45,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4175 states, 4174 states have (on average 1.202922855773838) internal successors, (5021), 4174 states have internal predecessors, (5021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:45,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4175 states to 4175 states and 5021 transitions. [2021-11-09 09:09:45,196 INFO L78 Accepts]: Start accepts. Automaton has 4175 states and 5021 transitions. Word has length 248 [2021-11-09 09:09:45,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:45,197 INFO L470 AbstractCegarLoop]: Abstraction has 4175 states and 5021 transitions. [2021-11-09 09:09:45,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 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) [2021-11-09 09:09:45,197 INFO L276 IsEmpty]: Start isEmpty. Operand 4175 states and 5021 transitions. [2021-11-09 09:09:45,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2021-11-09 09:09:45,204 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:45,205 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:45,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-11-09 09:09:45,205 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 09:09:45,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:45,206 INFO L85 PathProgramCache]: Analyzing trace with hash -238882112, now seen corresponding path program 1 times [2021-11-09 09:09:45,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:45,206 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398618826] [2021-11-09 09:09:45,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:45,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:45,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:45,439 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 20 proven. 17 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-09 09:09:45,439 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:45,440 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398618826] [2021-11-09 09:09:45,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398618826] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:09:45,440 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335202030] [2021-11-09 09:09:45,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:45,440 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:09:45,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:09:45,441 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:09:45,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-09 09:09:46,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:46,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 1034 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-09 09:09:46,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:09:47,682 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 29 proven. 30 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2021-11-09 09:09:47,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1335202030] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:09:47,682 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:09:47,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 17] total 26 [2021-11-09 09:09:47,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635501585] [2021-11-09 09:09:47,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-09 09:09:47,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:47,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-09 09:09:47,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=582, Unknown=0, NotChecked=0, Total=650 [2021-11-09 09:09:47,685 INFO L87 Difference]: Start difference. First operand 4175 states and 5021 transitions. Second operand has 26 states, 26 states have (on average 12.384615384615385) internal successors, (322), 26 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:55,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:55,187 INFO L93 Difference]: Finished difference Result 24996 states and 30974 transitions. [2021-11-09 09:09:55,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-11-09 09:09:55,187 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 12.384615384615385) internal successors, (322), 26 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 249 [2021-11-09 09:09:55,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:55,207 INFO L225 Difference]: With dead ends: 24996 [2021-11-09 09:09:55,207 INFO L226 Difference]: Without dead ends: 21474 [2021-11-09 09:09:55,216 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4200 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1651, Invalid=11231, Unknown=0, NotChecked=0, Total=12882 [2021-11-09 09:09:55,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21474 states. [2021-11-09 09:09:56,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21474 to 7277. [2021-11-09 09:09:56,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7277 states, 7276 states have (on average 1.2073941726223199) internal successors, (8785), 7276 states have internal predecessors, (8785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:56,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7277 states to 7277 states and 8785 transitions. [2021-11-09 09:09:56,157 INFO L78 Accepts]: Start accepts. Automaton has 7277 states and 8785 transitions. Word has length 249 [2021-11-09 09:09:56,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:56,157 INFO L470 AbstractCegarLoop]: Abstraction has 7277 states and 8785 transitions. [2021-11-09 09:09:56,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 12.384615384615385) internal successors, (322), 26 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:56,158 INFO L276 IsEmpty]: Start isEmpty. Operand 7277 states and 8785 transitions. [2021-11-09 09:09:56,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2021-11-09 09:09:56,169 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:56,170 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:56,202 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-09 09:09:56,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2021-11-09 09:09:56,394 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 09:09:56,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:56,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1920986319, now seen corresponding path program 1 times [2021-11-09 09:09:56,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:56,395 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20338067] [2021-11-09 09:09:56,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:56,395 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:56,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:56,527 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-11-09 09:09:56,527 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:56,527 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20338067] [2021-11-09 09:09:56,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20338067] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:56,528 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:56,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 09:09:56,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947343802] [2021-11-09 09:09:56,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:09:56,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:56,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:09:56,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:09:56,530 INFO L87 Difference]: Start difference. First operand 7277 states and 8785 transitions. Second operand has 5 states, 5 states have (on average 31.2) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:57,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:57,373 INFO L93 Difference]: Finished difference Result 13824 states and 16756 transitions. [2021-11-09 09:09:57,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:09:57,374 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 256 [2021-11-09 09:09:57,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:57,380 INFO L225 Difference]: With dead ends: 13824 [2021-11-09 09:09:57,380 INFO L226 Difference]: Without dead ends: 7277 [2021-11-09 09:09:57,386 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:09:57,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7277 states. [2021-11-09 09:09:58,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7277 to 7277. [2021-11-09 09:09:58,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7277 states, 7276 states have (on average 1.2045079714128641) internal successors, (8764), 7276 states have internal predecessors, (8764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:58,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7277 states to 7277 states and 8764 transitions. [2021-11-09 09:09:58,221 INFO L78 Accepts]: Start accepts. Automaton has 7277 states and 8764 transitions. Word has length 256 [2021-11-09 09:09:58,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:58,222 INFO L470 AbstractCegarLoop]: Abstraction has 7277 states and 8764 transitions. [2021-11-09 09:09:58,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:58,222 INFO L276 IsEmpty]: Start isEmpty. Operand 7277 states and 8764 transitions. [2021-11-09 09:09:58,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2021-11-09 09:09:58,231 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:58,231 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:58,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-11-09 09:09:58,232 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 09:09:58,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:58,232 INFO L85 PathProgramCache]: Analyzing trace with hash -843594453, now seen corresponding path program 1 times [2021-11-09 09:09:58,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:58,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021939657] [2021-11-09 09:09:58,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:58,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:58,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:58,469 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 26 proven. 24 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-09 09:09:58,469 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:58,469 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021939657] [2021-11-09 09:09:58,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021939657] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:09:58,469 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275214388] [2021-11-09 09:09:58,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:58,470 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:09:58,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:09:58,477 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:09:58,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-09 09:09:59,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:59,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 1056 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-09 09:09:59,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:10:00,669 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 42 proven. 38 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2021-11-09 09:10:00,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275214388] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:10:00,669 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:10:00,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17] total 31 [2021-11-09 09:10:00,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923361451] [2021-11-09 09:10:00,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-09 09:10:00,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:10:00,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-09 09:10:00,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=854, Unknown=0, NotChecked=0, Total=930 [2021-11-09 09:10:00,671 INFO L87 Difference]: Start difference. First operand 7277 states and 8764 transitions. Second operand has 31 states, 31 states have (on average 10.96774193548387) internal successors, (340), 31 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:10:05,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:10:05,810 INFO L93 Difference]: Finished difference Result 22973 states and 28634 transitions. [2021-11-09 09:10:05,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-11-09 09:10:05,810 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 10.96774193548387) internal successors, (340), 31 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 256 [2021-11-09 09:10:05,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:10:05,823 INFO L225 Difference]: With dead ends: 22973 [2021-11-09 09:10:05,823 INFO L226 Difference]: Without dead ends: 16673 [2021-11-09 09:10:05,830 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1954 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=892, Invalid=6764, Unknown=0, NotChecked=0, Total=7656 [2021-11-09 09:10:05,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16673 states. [2021-11-09 09:10:06,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16673 to 7277. [2021-11-09 09:10:06,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7277 states, 7276 states have (on average 1.2025838372732272) internal successors, (8750), 7276 states have internal predecessors, (8750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:10:06,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7277 states to 7277 states and 8750 transitions. [2021-11-09 09:10:06,646 INFO L78 Accepts]: Start accepts. Automaton has 7277 states and 8750 transitions. Word has length 256 [2021-11-09 09:10:06,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:10:06,647 INFO L470 AbstractCegarLoop]: Abstraction has 7277 states and 8750 transitions. [2021-11-09 09:10:06,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 10.96774193548387) internal successors, (340), 31 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:10:06,647 INFO L276 IsEmpty]: Start isEmpty. Operand 7277 states and 8750 transitions. [2021-11-09 09:10:06,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2021-11-09 09:10:06,659 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:10:06,659 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:10:06,683 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-09 09:10:06,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-11-09 09:10:06,865 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 09:10:06,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:10:06,865 INFO L85 PathProgramCache]: Analyzing trace with hash 121637256, now seen corresponding path program 1 times [2021-11-09 09:10:06,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:10:06,866 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69488766] [2021-11-09 09:10:06,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:10:06,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:10:06,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:10:06,971 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2021-11-09 09:10:06,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:10:06,971 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69488766] [2021-11-09 09:10:06,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69488766] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:10:06,972 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:10:06,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-09 09:10:06,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874367485] [2021-11-09 09:10:06,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 09:10:06,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:10:06,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 09:10:06,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-09 09:10:06,974 INFO L87 Difference]: Start difference. First operand 7277 states and 8750 transitions. Second operand has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:10:10,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:10:10,005 INFO L93 Difference]: Finished difference Result 23766 states and 29224 transitions. [2021-11-09 09:10:10,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-09 09:10:10,006 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 273 [2021-11-09 09:10:10,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:10:10,026 INFO L225 Difference]: With dead ends: 23766 [2021-11-09 09:10:10,026 INFO L226 Difference]: Without dead ends: 17963 [2021-11-09 09:10:10,033 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2021-11-09 09:10:10,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17963 states. [2021-11-09 09:10:10,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17963 to 6084. [2021-11-09 09:10:10,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6084 states, 6083 states have (on average 1.204011178694723) internal successors, (7324), 6083 states have internal predecessors, (7324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:10:10,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6084 states to 6084 states and 7324 transitions. [2021-11-09 09:10:10,777 INFO L78 Accepts]: Start accepts. Automaton has 6084 states and 7324 transitions. Word has length 273 [2021-11-09 09:10:10,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:10:10,778 INFO L470 AbstractCegarLoop]: Abstraction has 6084 states and 7324 transitions. [2021-11-09 09:10:10,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:10:10,778 INFO L276 IsEmpty]: Start isEmpty. Operand 6084 states and 7324 transitions. [2021-11-09 09:10:10,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2021-11-09 09:10:10,786 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:10:10,787 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:10:10,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-11-09 09:10:10,787 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 09:10:10,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:10:10,788 INFO L85 PathProgramCache]: Analyzing trace with hash -233049159, now seen corresponding path program 1 times [2021-11-09 09:10:10,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:10:10,788 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326789915] [2021-11-09 09:10:10,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:10:10,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:10:10,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:10:11,277 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 20 proven. 17 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-09 09:10:11,277 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:10:11,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326789915] [2021-11-09 09:10:11,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326789915] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:10:11,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110136988] [2021-11-09 09:10:11,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:10:11,278 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:10:11,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:10:11,279 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:10:11,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-09 09:10:12,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:10:12,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 1128 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-09 09:10:12,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:10:13,315 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 27 proven. 10 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-09 09:10:13,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2110136988] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:10:13,316 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:10:13,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 10] total 28 [2021-11-09 09:10:13,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028056401] [2021-11-09 09:10:13,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-11-09 09:10:13,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:10:13,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-11-09 09:10:13,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=724, Unknown=0, NotChecked=0, Total=812 [2021-11-09 09:10:13,318 INFO L87 Difference]: Start difference. First operand 6084 states and 7324 transitions. Second operand has 29 states, 29 states have (on average 12.482758620689655) internal successors, (362), 28 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:10:37,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:10:37,607 INFO L93 Difference]: Finished difference Result 59999 states and 75862 transitions. [2021-11-09 09:10:37,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 271 states. [2021-11-09 09:10:37,608 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 12.482758620689655) internal successors, (362), 28 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 273 [2021-11-09 09:10:37,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:10:37,667 INFO L225 Difference]: With dead ends: 59999 [2021-11-09 09:10:37,667 INFO L226 Difference]: Without dead ends: 55298 [2021-11-09 09:10:37,687 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 558 GetRequests, 265 SyntacticMatches, 0 SemanticMatches, 293 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34050 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=8596, Invalid=78134, Unknown=0, NotChecked=0, Total=86730 [2021-11-09 09:10:37,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55298 states. [2021-11-09 09:10:38,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55298 to 7454. [2021-11-09 09:10:38,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7454 states, 7453 states have (on average 1.2079699449885952) internal successors, (9003), 7453 states have internal predecessors, (9003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:10:38,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7454 states to 7454 states and 9003 transitions. [2021-11-09 09:10:38,969 INFO L78 Accepts]: Start accepts. Automaton has 7454 states and 9003 transitions. Word has length 273 [2021-11-09 09:10:38,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:10:38,970 INFO L470 AbstractCegarLoop]: Abstraction has 7454 states and 9003 transitions. [2021-11-09 09:10:38,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 12.482758620689655) internal successors, (362), 28 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:10:38,971 INFO L276 IsEmpty]: Start isEmpty. Operand 7454 states and 9003 transitions. [2021-11-09 09:10:38,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2021-11-09 09:10:38,977 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:10:38,977 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:10:39,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-09 09:10:39,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-11-09 09:10:39,178 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 09:10:39,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:10:39,178 INFO L85 PathProgramCache]: Analyzing trace with hash -817820809, now seen corresponding path program 1 times [2021-11-09 09:10:39,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:10:39,178 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437603056] [2021-11-09 09:10:39,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:10:39,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:10:39,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:10:39,303 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-11-09 09:10:39,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:10:39,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437603056] [2021-11-09 09:10:39,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437603056] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:10:39,304 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:10:39,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 09:10:39,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991111413] [2021-11-09 09:10:39,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:10:39,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:10:39,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:10:39,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:10:39,306 INFO L87 Difference]: Start difference. First operand 7454 states and 9003 transitions. Second operand has 5 states, 5 states have (on average 34.6) internal successors, (173), 4 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:10:40,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:10:40,454 INFO L93 Difference]: Finished difference Result 14120 states and 17128 transitions. [2021-11-09 09:10:40,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:10:40,454 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.6) internal successors, (173), 4 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 273 [2021-11-09 09:10:40,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:10:40,461 INFO L225 Difference]: With dead ends: 14120 [2021-11-09 09:10:40,461 INFO L226 Difference]: Without dead ends: 7463 [2021-11-09 09:10:40,465 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:10:40,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7463 states. [2021-11-09 09:10:41,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7463 to 7421. [2021-11-09 09:10:41,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7421 states, 7420 states have (on average 1.2060646900269543) internal successors, (8949), 7420 states have internal predecessors, (8949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:10:41,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7421 states to 7421 states and 8949 transitions. [2021-11-09 09:10:41,474 INFO L78 Accepts]: Start accepts. Automaton has 7421 states and 8949 transitions. Word has length 273 [2021-11-09 09:10:41,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:10:41,475 INFO L470 AbstractCegarLoop]: Abstraction has 7421 states and 8949 transitions. [2021-11-09 09:10:41,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.6) internal successors, (173), 4 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:10:41,475 INFO L276 IsEmpty]: Start isEmpty. Operand 7421 states and 8949 transitions. [2021-11-09 09:10:41,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2021-11-09 09:10:41,482 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:10:41,482 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:10:41,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-11-09 09:10:41,482 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 09:10:41,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:10:41,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1366525828, now seen corresponding path program 1 times [2021-11-09 09:10:41,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:10:41,483 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766577671] [2021-11-09 09:10:41,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:10:41,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:10:41,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:10:41,792 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 26 proven. 24 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-09 09:10:41,792 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:10:41,792 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766577671] [2021-11-09 09:10:41,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766577671] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:10:41,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580526308] [2021-11-09 09:10:41,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:10:41,793 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:10:41,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:10:41,798 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:10:41,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-09 09:10:42,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:10:42,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 1129 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-09 09:10:42,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:10:43,795 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 30 proven. 20 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-09 09:10:43,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1580526308] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:10:43,795 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:10:43,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 7] total 24 [2021-11-09 09:10:43,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516239731] [2021-11-09 09:10:43,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-09 09:10:43,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:10:43,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-09 09:10:43,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=532, Unknown=0, NotChecked=0, Total=600 [2021-11-09 09:10:43,798 INFO L87 Difference]: Start difference. First operand 7421 states and 8949 transitions. Second operand has 25 states, 25 states have (on average 14.48) internal successors, (362), 24 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:10:54,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:10:54,728 INFO L93 Difference]: Finished difference Result 43842 states and 54904 transitions. [2021-11-09 09:10:54,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-11-09 09:10:54,728 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 14.48) internal successors, (362), 24 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 273 [2021-11-09 09:10:54,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:10:54,761 INFO L225 Difference]: With dead ends: 43842 [2021-11-09 09:10:54,761 INFO L226 Difference]: Without dead ends: 38015 [2021-11-09 09:10:54,769 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2359 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1216, Invalid=7340, Unknown=0, NotChecked=0, Total=8556 [2021-11-09 09:10:54,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38015 states. [2021-11-09 09:10:56,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38015 to 9348. [2021-11-09 09:10:56,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9348 states, 9347 states have (on average 1.2094789772119396) internal successors, (11305), 9347 states have internal predecessors, (11305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:10:56,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9348 states to 9348 states and 11305 transitions. [2021-11-09 09:10:56,422 INFO L78 Accepts]: Start accepts. Automaton has 9348 states and 11305 transitions. Word has length 273 [2021-11-09 09:10:56,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:10:56,422 INFO L470 AbstractCegarLoop]: Abstraction has 9348 states and 11305 transitions. [2021-11-09 09:10:56,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 14.48) internal successors, (362), 24 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:10:56,423 INFO L276 IsEmpty]: Start isEmpty. Operand 9348 states and 11305 transitions. [2021-11-09 09:10:56,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2021-11-09 09:10:56,432 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:10:56,433 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:10:56,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-09 09:10:56,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2021-11-09 09:10:56,650 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 09:10:56,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:10:56,650 INFO L85 PathProgramCache]: Analyzing trace with hash -948637126, now seen corresponding path program 1 times [2021-11-09 09:10:56,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:10:56,650 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775522079] [2021-11-09 09:10:56,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:10:56,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:10:56,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:10:57,094 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 26 proven. 24 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-09 09:10:57,094 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:10:57,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775522079] [2021-11-09 09:10:57,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775522079] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:10:57,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515445843] [2021-11-09 09:10:57,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:10:57,095 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:10:57,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:10:57,101 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:10:57,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-09 09:10:58,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:10:58,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 1128 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-09 09:10:58,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:10:58,776 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 6 proven. 17 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2021-11-09 09:10:58,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515445843] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:10:58,776 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:10:58,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 8] total 25 [2021-11-09 09:10:58,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901463657] [2021-11-09 09:10:58,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-09 09:10:58,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:10:58,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-09 09:10:58,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=542, Unknown=0, NotChecked=0, Total=600 [2021-11-09 09:10:58,778 INFO L87 Difference]: Start difference. First operand 9348 states and 11305 transitions. Second operand has 25 states, 25 states have (on average 13.16) internal successors, (329), 25 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:11:03,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:11:03,928 INFO L93 Difference]: Finished difference Result 24662 states and 30634 transitions. [2021-11-09 09:11:03,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-09 09:11:03,928 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 13.16) internal successors, (329), 25 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 273 [2021-11-09 09:11:03,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:11:03,942 INFO L225 Difference]: With dead ends: 24662 [2021-11-09 09:11:03,942 INFO L226 Difference]: Without dead ends: 16192 [2021-11-09 09:11:03,947 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 610 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=417, Invalid=2775, Unknown=0, NotChecked=0, Total=3192 [2021-11-09 09:11:03,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16192 states. [2021-11-09 09:11:05,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16192 to 8559. [2021-11-09 09:11:05,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8559 states, 8558 states have (on average 1.2187426968917972) internal successors, (10430), 8558 states have internal predecessors, (10430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:11:05,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8559 states to 8559 states and 10430 transitions. [2021-11-09 09:11:05,429 INFO L78 Accepts]: Start accepts. Automaton has 8559 states and 10430 transitions. Word has length 273 [2021-11-09 09:11:05,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:11:05,429 INFO L470 AbstractCegarLoop]: Abstraction has 8559 states and 10430 transitions. [2021-11-09 09:11:05,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 13.16) internal successors, (329), 25 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:11:05,430 INFO L276 IsEmpty]: Start isEmpty. Operand 8559 states and 10430 transitions. [2021-11-09 09:11:05,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2021-11-09 09:11:05,436 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:11:05,436 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:11:05,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-09 09:11:05,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:11:05,661 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 09:11:05,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:11:05,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1861864480, now seen corresponding path program 1 times [2021-11-09 09:11:05,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:11:05,662 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296618041] [2021-11-09 09:11:05,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:11:05,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:11:05,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:11:06,107 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 20 proven. 17 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-09 09:11:06,107 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:11:06,107 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296618041] [2021-11-09 09:11:06,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296618041] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:11:06,107 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059328301] [2021-11-09 09:11:06,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:11:06,108 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:11:06,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:11:06,109 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:11:06,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-09 09:11:07,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:11:07,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 1129 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-09 09:11:07,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:11:08,175 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 27 proven. 10 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-09 09:11:08,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059328301] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:11:08,176 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:11:08,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 8] total 26 [2021-11-09 09:11:08,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621172055] [2021-11-09 09:11:08,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-09 09:11:08,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:11:08,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-09 09:11:08,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=626, Unknown=0, NotChecked=0, Total=702 [2021-11-09 09:11:08,177 INFO L87 Difference]: Start difference. First operand 8559 states and 10430 transitions. Second operand has 27 states, 27 states have (on average 13.481481481481481) internal successors, (364), 26 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:11:46,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:11:46,825 INFO L93 Difference]: Finished difference Result 103316 states and 130991 transitions. [2021-11-09 09:11:46,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2021-11-09 09:11:46,831 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 13.481481481481481) internal successors, (364), 26 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 274 [2021-11-09 09:11:46,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:11:46,931 INFO L225 Difference]: With dead ends: 103316 [2021-11-09 09:11:46,931 INFO L226 Difference]: Without dead ends: 95291 [2021-11-09 09:11:47,109 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16818 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=5007, Invalid=41003, Unknown=0, NotChecked=0, Total=46010 [2021-11-09 09:11:47,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95291 states. [2021-11-09 09:11:49,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95291 to 8616. [2021-11-09 09:11:49,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8616 states, 8615 states have (on average 1.2195008705745791) internal successors, (10506), 8615 states have internal predecessors, (10506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:11:49,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8616 states to 8616 states and 10506 transitions. [2021-11-09 09:11:49,495 INFO L78 Accepts]: Start accepts. Automaton has 8616 states and 10506 transitions. Word has length 274 [2021-11-09 09:11:49,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:11:49,495 INFO L470 AbstractCegarLoop]: Abstraction has 8616 states and 10506 transitions. [2021-11-09 09:11:49,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 13.481481481481481) internal successors, (364), 26 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:11:49,496 INFO L276 IsEmpty]: Start isEmpty. Operand 8616 states and 10506 transitions. [2021-11-09 09:11:49,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2021-11-09 09:11:49,501 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:11:49,501 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:11:49,525 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-11-09 09:11:49,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:11:49,703 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 09:11:49,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:11:49,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1277092830, now seen corresponding path program 1 times [2021-11-09 09:11:49,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:11:49,704 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604070412] [2021-11-09 09:11:49,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:11:49,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:11:49,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:11:49,871 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-11-09 09:11:49,871 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:11:49,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604070412] [2021-11-09 09:11:49,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604070412] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:11:49,871 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:11:49,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 09:11:49,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070178014] [2021-11-09 09:11:49,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:11:49,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:11:49,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:11:49,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:11:49,873 INFO L87 Difference]: Start difference. First operand 8616 states and 10506 transitions. Second operand has 5 states, 5 states have (on average 34.8) internal successors, (174), 4 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:11:51,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:11:51,664 INFO L93 Difference]: Finished difference Result 16984 states and 20738 transitions. [2021-11-09 09:11:51,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:11:51,665 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.8) internal successors, (174), 4 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 274 [2021-11-09 09:11:51,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:11:51,672 INFO L225 Difference]: With dead ends: 16984 [2021-11-09 09:11:51,672 INFO L226 Difference]: Without dead ends: 8669 [2021-11-09 09:11:51,681 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:11:51,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8669 states. [2021-11-09 09:11:53,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8669 to 8559. [2021-11-09 09:11:53,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8559 states, 8558 states have (on average 1.2187426968917972) internal successors, (10430), 8558 states have internal predecessors, (10430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:11:53,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8559 states to 8559 states and 10430 transitions. [2021-11-09 09:11:53,355 INFO L78 Accepts]: Start accepts. Automaton has 8559 states and 10430 transitions. Word has length 274 [2021-11-09 09:11:53,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:11:53,355 INFO L470 AbstractCegarLoop]: Abstraction has 8559 states and 10430 transitions. [2021-11-09 09:11:53,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.8) internal successors, (174), 4 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:11:53,356 INFO L276 IsEmpty]: Start isEmpty. Operand 8559 states and 10430 transitions. [2021-11-09 09:11:53,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2021-11-09 09:11:53,359 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:11:53,360 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:11:53,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-11-09 09:11:53,360 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 09:11:53,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:11:53,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1316991906, now seen corresponding path program 1 times [2021-11-09 09:11:53,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:11:53,361 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581252791] [2021-11-09 09:11:53,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:11:53,361 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:11:53,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:11:53,476 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-11-09 09:11:53,477 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:11:53,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581252791] [2021-11-09 09:11:53,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581252791] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:11:53,477 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:11:53,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 09:11:53,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600215892] [2021-11-09 09:11:53,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:11:53,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:11:53,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:11:53,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:11:53,487 INFO L87 Difference]: Start difference. First operand 8559 states and 10430 transitions. Second operand has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:11:54,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:11:54,859 INFO L93 Difference]: Finished difference Result 13732 states and 16725 transitions. [2021-11-09 09:11:54,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:11:54,860 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 274 [2021-11-09 09:11:54,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:11:54,865 INFO L225 Difference]: With dead ends: 13732 [2021-11-09 09:11:54,865 INFO L226 Difference]: Without dead ends: 5425 [2021-11-09 09:11:54,873 INFO L786 BasicCegarLoop]: 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 [2021-11-09 09:11:54,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5425 states. [2021-11-09 09:11:56,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5425 to 5419. [2021-11-09 09:11:56,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5419 states, 5418 states have (on average 1.2083794758213362) internal successors, (6547), 5418 states have internal predecessors, (6547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:11:56,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5419 states to 5419 states and 6547 transitions. [2021-11-09 09:11:56,188 INFO L78 Accepts]: Start accepts. Automaton has 5419 states and 6547 transitions. Word has length 274 [2021-11-09 09:11:56,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:11:56,188 INFO L470 AbstractCegarLoop]: Abstraction has 5419 states and 6547 transitions. [2021-11-09 09:11:56,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:11:56,188 INFO L276 IsEmpty]: Start isEmpty. Operand 5419 states and 6547 transitions. [2021-11-09 09:11:56,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2021-11-09 09:11:56,192 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:11:56,192 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:11:56,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-11-09 09:11:56,193 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 09:11:56,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:11:56,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1766817480, now seen corresponding path program 1 times [2021-11-09 09:11:56,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:11:56,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781204095] [2021-11-09 09:11:56,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:11:56,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:11:56,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:11:56,296 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2021-11-09 09:11:56,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:11:56,296 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781204095] [2021-11-09 09:11:56,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781204095] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:11:56,297 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:11:56,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-09 09:11:56,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974154107] [2021-11-09 09:11:56,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 09:11:56,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:11:56,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 09:11:56,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-09 09:11:56,298 INFO L87 Difference]: Start difference. First operand 5419 states and 6547 transitions. Second operand has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:11:59,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:11:59,110 INFO L93 Difference]: Finished difference Result 13823 states and 16977 transitions. [2021-11-09 09:11:59,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-09 09:11:59,111 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 275 [2021-11-09 09:11:59,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:11:59,117 INFO L225 Difference]: With dead ends: 13823 [2021-11-09 09:11:59,117 INFO L226 Difference]: Without dead ends: 8858 [2021-11-09 09:11:59,120 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:11:59,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8858 states. [2021-11-09 09:12:00,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8858 to 5510. [2021-11-09 09:12:00,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5510 states, 5509 states have (on average 1.2074786712652024) internal successors, (6652), 5509 states have internal predecessors, (6652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:12:00,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5510 states to 5510 states and 6652 transitions. [2021-11-09 09:12:00,224 INFO L78 Accepts]: Start accepts. Automaton has 5510 states and 6652 transitions. Word has length 275 [2021-11-09 09:12:00,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:12:00,224 INFO L470 AbstractCegarLoop]: Abstraction has 5510 states and 6652 transitions. [2021-11-09 09:12:00,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.857142857142858) internal successors, (188), 7 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:12:00,224 INFO L276 IsEmpty]: Start isEmpty. Operand 5510 states and 6652 transitions. [2021-11-09 09:12:00,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2021-11-09 09:12:00,229 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:12:00,229 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:12:00,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-11-09 09:12:00,230 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 09:12:00,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:12:00,230 INFO L85 PathProgramCache]: Analyzing trace with hash -939888724, now seen corresponding path program 1 times [2021-11-09 09:12:00,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:12:00,231 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874098222] [2021-11-09 09:12:00,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:12:00,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:12:00,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:12:00,357 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2021-11-09 09:12:00,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:12:00,357 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874098222] [2021-11-09 09:12:00,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874098222] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:12:00,358 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:12:00,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-09 09:12:00,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971744140] [2021-11-09 09:12:00,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 09:12:00,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:12:00,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 09:12:00,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-09 09:12:00,359 INFO L87 Difference]: Start difference. First operand 5510 states and 6652 transitions. Second operand has 7 states, 7 states have (on average 26.714285714285715) internal successors, (187), 7 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:12:02,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:12:02,902 INFO L93 Difference]: Finished difference Result 12838 states and 15699 transitions. [2021-11-09 09:12:02,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-09 09:12:02,903 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 26.714285714285715) internal successors, (187), 7 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 275 [2021-11-09 09:12:02,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:12:02,908 INFO L225 Difference]: With dead ends: 12838 [2021-11-09 09:12:02,908 INFO L226 Difference]: Without dead ends: 7782 [2021-11-09 09:12:02,911 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:12:02,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7782 states. [2021-11-09 09:12:03,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7782 to 5510. [2021-11-09 09:12:03,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5510 states, 5509 states have (on average 1.2062080232347068) internal successors, (6645), 5509 states have internal predecessors, (6645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:12:03,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5510 states to 5510 states and 6645 transitions. [2021-11-09 09:12:03,988 INFO L78 Accepts]: Start accepts. Automaton has 5510 states and 6645 transitions. Word has length 275 [2021-11-09 09:12:03,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:12:03,988 INFO L470 AbstractCegarLoop]: Abstraction has 5510 states and 6645 transitions. [2021-11-09 09:12:03,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.714285714285715) internal successors, (187), 7 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:12:03,989 INFO L276 IsEmpty]: Start isEmpty. Operand 5510 states and 6645 transitions. [2021-11-09 09:12:03,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2021-11-09 09:12:03,994 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:12:03,994 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:12:03,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-11-09 09:12:03,995 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 09:12:03,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:12:03,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1428040487, now seen corresponding path program 1 times [2021-11-09 09:12:03,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:12:03,995 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055879051] [2021-11-09 09:12:03,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:12:03,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:12:04,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:12:04,102 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2021-11-09 09:12:04,102 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:12:04,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055879051] [2021-11-09 09:12:04,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055879051] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:12:04,103 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:12:04,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-09 09:12:04,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136512496] [2021-11-09 09:12:04,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 09:12:04,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:12:04,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 09:12:04,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-09 09:12:04,105 INFO L87 Difference]: Start difference. First operand 5510 states and 6645 transitions. Second operand has 8 states, 8 states have (on average 22.875) internal successors, (183), 8 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:12:09,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:12:09,616 INFO L93 Difference]: Finished difference Result 19493 states and 24021 transitions. [2021-11-09 09:12:09,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-09 09:12:09,617 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.875) internal successors, (183), 8 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 279 [2021-11-09 09:12:09,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:12:09,628 INFO L225 Difference]: With dead ends: 19493 [2021-11-09 09:12:09,628 INFO L226 Difference]: Without dead ends: 14437 [2021-11-09 09:12:09,631 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=129, Invalid=291, Unknown=0, NotChecked=0, Total=420 [2021-11-09 09:12:09,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14437 states. [2021-11-09 09:12:10,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14437 to 5468. [2021-11-09 09:12:10,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5468 states, 5467 states have (on average 1.20523138832998) internal successors, (6589), 5467 states have internal predecessors, (6589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:12:10,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5468 states to 5468 states and 6589 transitions. [2021-11-09 09:12:10,748 INFO L78 Accepts]: Start accepts. Automaton has 5468 states and 6589 transitions. Word has length 279 [2021-11-09 09:12:10,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:12:10,748 INFO L470 AbstractCegarLoop]: Abstraction has 5468 states and 6589 transitions. [2021-11-09 09:12:10,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.875) internal successors, (183), 8 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:12:10,749 INFO L276 IsEmpty]: Start isEmpty. Operand 5468 states and 6589 transitions. [2021-11-09 09:12:10,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2021-11-09 09:12:10,752 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:12:10,752 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:12:10,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-11-09 09:12:10,752 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 34 more)] === [2021-11-09 09:12:10,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:12:10,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1629576874, now seen corresponding path program 1 times [2021-11-09 09:12:10,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:12:10,753 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041351761] [2021-11-09 09:12:10,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:12:10,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:12:10,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:12:11,120 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 2 proven. 35 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-09 09:12:11,120 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:12:11,120 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041351761] [2021-11-09 09:12:11,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041351761] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:12:11,120 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876373880] [2021-11-09 09:12:11,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:12:11,121 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:12:11,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:12:11,125 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:12:11,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cf48572-e095-4e58-862b-86ae187d4db5/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-09 09:12:12,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:12:12,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 1148 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-09 09:12:12,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:12:13,559 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 16 proven. 38 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-09 09:12:13,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [876373880] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:12:13,559 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:12:13,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 15] total 36 [2021-11-09 09:12:13,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786077566] [2021-11-09 09:12:13,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-11-09 09:12:13,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:12:13,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-11-09 09:12:13,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1231, Unknown=0, NotChecked=0, Total=1332 [2021-11-09 09:12:13,562 INFO L87 Difference]: Start difference. First operand 5468 states and 6589 transitions. Second operand has 37 states, 37 states have (on average 9.27027027027027) internal successors, (343), 36 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)