./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.4.1.ufo.BOUNDED-8.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_d1a14cf0-fbd5-4e1d-9beb-f3b9e54ef120/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1a14cf0-fbd5-4e1d-9beb-f3b9e54ef120/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_d1a14cf0-fbd5-4e1d-9beb-f3b9e54ef120/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1a14cf0-fbd5-4e1d-9beb-f3b9e54ef120/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.4.1.ufo.BOUNDED-8.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1a14cf0-fbd5-4e1d-9beb-f3b9e54ef120/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_d1a14cf0-fbd5-4e1d-9beb-f3b9e54ef120/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 77af8780d2ec99ad0d03b475aa25db67a7ba0a218594f51cddbe35460cd2b670 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 10:35:38,097 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 10:35:38,101 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 10:35:38,164 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 10:35:38,165 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 10:35:38,167 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 10:35:38,169 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 10:35:38,172 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 10:35:38,175 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 10:35:38,176 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 10:35:38,178 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 10:35:38,180 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 10:35:38,180 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 10:35:38,182 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 10:35:38,184 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 10:35:38,186 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 10:35:38,188 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 10:35:38,190 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 10:35:38,193 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 10:35:38,196 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 10:35:38,199 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 10:35:38,201 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 10:35:38,203 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 10:35:38,204 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 10:35:38,209 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 10:35:38,210 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 10:35:38,211 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 10:35:38,212 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 10:35:38,213 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 10:35:38,215 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 10:35:38,215 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 10:35:38,217 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 10:35:38,218 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 10:35:38,219 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 10:35:38,221 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 10:35:38,222 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 10:35:38,223 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 10:35:38,224 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 10:35:38,224 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 10:35:38,226 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 10:35:38,227 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 10:35:38,228 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1a14cf0-fbd5-4e1d-9beb-f3b9e54ef120/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-09 10:35:38,261 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 10:35:38,265 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 10:35:38,266 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 10:35:38,267 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 10:35:38,268 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 10:35:38,270 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 10:35:38,270 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 10:35:38,270 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 10:35:38,271 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 10:35:38,271 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 10:35:38,272 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 10:35:38,272 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 10:35:38,273 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 10:35:38,273 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 10:35:38,273 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 10:35:38,273 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 10:35:38,274 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 10:35:38,274 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 10:35:38,274 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 10:35:38,275 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 10:35:38,275 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 10:35:38,275 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 10:35:38,275 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 10:35:38,276 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 10:35:38,276 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 10:35:38,276 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 10:35:38,277 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 10:35:38,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 10:35:38,277 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 10:35:38,278 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 10:35:38,278 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 10:35:38,278 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 10:35:38,279 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_d1a14cf0-fbd5-4e1d-9beb-f3b9e54ef120/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1a14cf0-fbd5-4e1d-9beb-f3b9e54ef120/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 77af8780d2ec99ad0d03b475aa25db67a7ba0a218594f51cddbe35460cd2b670 [2021-11-09 10:35:38,588 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 10:35:38,615 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 10:35:38,618 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 10:35:38,619 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 10:35:38,620 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 10:35:38,620 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1a14cf0-fbd5-4e1d-9beb-f3b9e54ef120/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.4.1.ufo.BOUNDED-8.pals.c [2021-11-09 10:35:38,717 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1a14cf0-fbd5-4e1d-9beb-f3b9e54ef120/bin/uautomizer-IVEQpCNsaX/data/7a081c890/307c8e4d253947da8e3be9340aaabf81/FLAG72e936ff7 [2021-11-09 10:35:39,432 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 10:35:39,433 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1a14cf0-fbd5-4e1d-9beb-f3b9e54ef120/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.4.1.ufo.BOUNDED-8.pals.c [2021-11-09 10:35:39,452 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1a14cf0-fbd5-4e1d-9beb-f3b9e54ef120/bin/uautomizer-IVEQpCNsaX/data/7a081c890/307c8e4d253947da8e3be9340aaabf81/FLAG72e936ff7 [2021-11-09 10:35:39,698 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1a14cf0-fbd5-4e1d-9beb-f3b9e54ef120/bin/uautomizer-IVEQpCNsaX/data/7a081c890/307c8e4d253947da8e3be9340aaabf81 [2021-11-09 10:35:39,701 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 10:35:39,703 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 10:35:39,707 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 10:35:39,707 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 10:35:39,712 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 10:35:39,714 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:35:39" (1/1) ... [2021-11-09 10:35:39,716 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@538f23c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:35:39, skipping insertion in model container [2021-11-09 10:35:39,717 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:35:39" (1/1) ... [2021-11-09 10:35:39,726 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 10:35:39,812 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 10:35:40,243 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_d1a14cf0-fbd5-4e1d-9beb-f3b9e54ef120/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.4.1.ufo.BOUNDED-8.pals.c[26618,26631] [2021-11-09 10:35:40,247 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 10:35:40,274 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 10:35:40,405 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_d1a14cf0-fbd5-4e1d-9beb-f3b9e54ef120/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.4.1.ufo.BOUNDED-8.pals.c[26618,26631] [2021-11-09 10:35:40,406 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 10:35:40,442 INFO L208 MainTranslator]: Completed translation [2021-11-09 10:35:40,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:35:40 WrapperNode [2021-11-09 10:35:40,442 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 10:35:40,444 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 10:35:40,444 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 10:35:40,445 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 10:35:40,454 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:35:40" (1/1) ... [2021-11-09 10:35:40,477 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:35:40" (1/1) ... [2021-11-09 10:35:40,558 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 10:35:40,560 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 10:35:40,560 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 10:35:40,560 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 10:35:40,568 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:35:40" (1/1) ... [2021-11-09 10:35:40,569 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:35:40" (1/1) ... [2021-11-09 10:35:40,578 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:35:40" (1/1) ... [2021-11-09 10:35:40,578 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:35:40" (1/1) ... [2021-11-09 10:35:40,604 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:35:40" (1/1) ... [2021-11-09 10:35:40,625 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:35:40" (1/1) ... [2021-11-09 10:35:40,630 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:35:40" (1/1) ... [2021-11-09 10:35:40,640 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 10:35:40,641 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 10:35:40,642 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 10:35:40,642 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 10:35:40,663 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:35:40" (1/1) ... [2021-11-09 10:35:40,672 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 10:35:40,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1a14cf0-fbd5-4e1d-9beb-f3b9e54ef120/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:35:40,716 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1a14cf0-fbd5-4e1d-9beb-f3b9e54ef120/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 10:35:40,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1a14cf0-fbd5-4e1d-9beb-f3b9e54ef120/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 10:35:40,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 10:35:40,802 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 10:35:40,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 10:35:40,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 10:35:42,203 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 10:35:42,204 INFO L299 CfgBuilder]: Removed 21 assume(true) statements. [2021-11-09 10:35:42,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:35:42 BoogieIcfgContainer [2021-11-09 10:35:42,208 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 10:35:42,212 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 10:35:42,212 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 10:35:42,216 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 10:35:42,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:35:39" (1/3) ... [2021-11-09 10:35:42,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dfef21c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:35:42, skipping insertion in model container [2021-11-09 10:35:42,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:35:40" (2/3) ... [2021-11-09 10:35:42,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dfef21c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:35:42, skipping insertion in model container [2021-11-09 10:35:42,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:35:42" (3/3) ... [2021-11-09 10:35:42,222 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.1.ufo.BOUNDED-8.pals.c [2021-11-09 10:35:42,229 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 10:35:42,229 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-09 10:35:42,296 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 10:35:42,304 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 10:35:42,304 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-09 10:35:42,334 INFO L276 IsEmpty]: Start isEmpty. Operand has 312 states, 310 states have (on average 1.8) internal successors, (558), 311 states have internal predecessors, (558), 0 states have call successors, (0), 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 10:35:42,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-09 10:35:42,350 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:35:42,351 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:35:42,352 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:35:42,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:35:42,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1445812, now seen corresponding path program 1 times [2021-11-09 10:35:42,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:35:42,370 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720727568] [2021-11-09 10:35:42,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:35:42,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:35:42,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:35:42,809 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 10:35:42,809 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:35:42,810 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720727568] [2021-11-09 10:35:42,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720727568] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:35:42,811 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:35:42,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-09 10:35:42,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15039533] [2021-11-09 10:35:42,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-09 10:35:42,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:35:42,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-09 10:35:42,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 10:35:42,853 INFO L87 Difference]: Start difference. First operand has 312 states, 310 states have (on average 1.8) internal successors, (558), 311 states have internal predecessors, (558), 0 states have call successors, (0), 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 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 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 10:35:42,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:35:42,917 INFO L93 Difference]: Finished difference Result 441 states and 778 transitions. [2021-11-09 10:35:42,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-09 10:35:42,919 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-09 10:35:42,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:35:42,948 INFO L225 Difference]: With dead ends: 441 [2021-11-09 10:35:42,949 INFO L226 Difference]: Without dead ends: 308 [2021-11-09 10:35:42,954 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 10:35:42,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2021-11-09 10:35:43,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 308. [2021-11-09 10:35:43,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 307 states have (on average 1.794788273615635) internal successors, (551), 307 states have internal predecessors, (551), 0 states have call successors, (0), 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 10:35:43,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 551 transitions. [2021-11-09 10:35:43,034 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 551 transitions. Word has length 77 [2021-11-09 10:35:43,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:35:43,035 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 551 transitions. [2021-11-09 10:35:43,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 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 10:35:43,036 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 551 transitions. [2021-11-09 10:35:43,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-09 10:35:43,042 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:35:43,042 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:35:43,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 10:35:43,043 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:35:43,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:35:43,044 INFO L85 PathProgramCache]: Analyzing trace with hash -135459318, now seen corresponding path program 1 times [2021-11-09 10:35:43,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:35:43,045 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131978422] [2021-11-09 10:35:43,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:35:43,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:35:43,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:35:43,274 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 10:35:43,274 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:35:43,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131978422] [2021-11-09 10:35:43,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131978422] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:35:43,275 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:35:43,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 10:35:43,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427241804] [2021-11-09 10:35:43,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 10:35:43,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:35:43,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 10:35:43,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:35:43,283 INFO L87 Difference]: Start difference. First operand 308 states and 551 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 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 10:35:43,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:35:43,453 INFO L93 Difference]: Finished difference Result 436 states and 768 transitions. [2021-11-09 10:35:43,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 10:35:43,454 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-09 10:35:43,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:35:43,457 INFO L225 Difference]: With dead ends: 436 [2021-11-09 10:35:43,458 INFO L226 Difference]: Without dead ends: 308 [2021-11-09 10:35:43,460 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-09 10:35:43,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2021-11-09 10:35:43,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 308. [2021-11-09 10:35:43,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 307 states have (on average 1.6840390879478828) internal successors, (517), 307 states have internal predecessors, (517), 0 states have call successors, (0), 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 10:35:43,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 517 transitions. [2021-11-09 10:35:43,486 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 517 transitions. Word has length 77 [2021-11-09 10:35:43,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:35:43,487 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 517 transitions. [2021-11-09 10:35:43,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 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 10:35:43,488 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 517 transitions. [2021-11-09 10:35:43,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-09 10:35:43,496 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:35:43,496 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:35:43,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-09 10:35:43,497 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:35:43,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:35:43,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1547820362, now seen corresponding path program 1 times [2021-11-09 10:35:43,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:35:43,499 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726986123] [2021-11-09 10:35:43,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:35:43,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:35:43,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:35:43,901 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 10:35:43,904 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:35:43,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726986123] [2021-11-09 10:35:43,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726986123] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:35:43,905 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:35:43,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:35:43,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114612267] [2021-11-09 10:35:43,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:35:43,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:35:43,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:35:43,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:35:43,908 INFO L87 Difference]: Start difference. First operand 308 states and 517 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:35:43,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:35:43,981 INFO L93 Difference]: Finished difference Result 544 states and 921 transitions. [2021-11-09 10:35:43,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:35:43,983 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-11-09 10:35:43,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:35:43,991 INFO L225 Difference]: With dead ends: 544 [2021-11-09 10:35:43,991 INFO L226 Difference]: Without dead ends: 420 [2021-11-09 10:35:43,992 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 10:35:43,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2021-11-09 10:35:44,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 418. [2021-11-09 10:35:44,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 417 states have (on average 1.683453237410072) internal successors, (702), 417 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:35:44,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 702 transitions. [2021-11-09 10:35:44,022 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 702 transitions. Word has length 110 [2021-11-09 10:35:44,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:35:44,023 INFO L470 AbstractCegarLoop]: Abstraction has 418 states and 702 transitions. [2021-11-09 10:35:44,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:35:44,024 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 702 transitions. [2021-11-09 10:35:44,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-09 10:35:44,029 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:35:44,030 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:35:44,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-09 10:35:44,030 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:35:44,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:35:44,031 INFO L85 PathProgramCache]: Analyzing trace with hash -2146366683, now seen corresponding path program 1 times [2021-11-09 10:35:44,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:35:44,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171482945] [2021-11-09 10:35:44,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:35:44,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:35:44,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:35:44,215 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 10:35:44,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:35:44,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171482945] [2021-11-09 10:35:44,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171482945] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:35:44,217 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:35:44,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:35:44,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359969045] [2021-11-09 10:35:44,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:35:44,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:35:44,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:35:44,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:35:44,220 INFO L87 Difference]: Start difference. First operand 418 states and 702 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 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 10:35:44,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:35:44,260 INFO L93 Difference]: Finished difference Result 866 states and 1462 transitions. [2021-11-09 10:35:44,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:35:44,260 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2021-11-09 10:35:44,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:35:44,266 INFO L225 Difference]: With dead ends: 866 [2021-11-09 10:35:44,267 INFO L226 Difference]: Without dead ends: 632 [2021-11-09 10:35:44,268 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 10:35:44,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2021-11-09 10:35:44,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 630. [2021-11-09 10:35:44,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 630 states, 629 states have (on average 1.6868044515103338) internal successors, (1061), 629 states have internal predecessors, (1061), 0 states have call successors, (0), 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 10:35:44,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 1061 transitions. [2021-11-09 10:35:44,298 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 1061 transitions. Word has length 113 [2021-11-09 10:35:44,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:35:44,299 INFO L470 AbstractCegarLoop]: Abstraction has 630 states and 1061 transitions. [2021-11-09 10:35:44,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 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 10:35:44,299 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 1061 transitions. [2021-11-09 10:35:44,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-09 10:35:44,303 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:35:44,304 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:35:44,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-09 10:35:44,304 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:35:44,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:35:44,305 INFO L85 PathProgramCache]: Analyzing trace with hash 767519678, now seen corresponding path program 1 times [2021-11-09 10:35:44,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:35:44,306 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709533229] [2021-11-09 10:35:44,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:35:44,306 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:35:44,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:35:44,481 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 10:35:44,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:35:44,482 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709533229] [2021-11-09 10:35:44,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709533229] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:35:44,482 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:35:44,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:35:44,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300601902] [2021-11-09 10:35:44,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:35:44,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:35:44,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:35:44,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:35:44,486 INFO L87 Difference]: Start difference. First operand 630 states and 1061 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:35:44,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:35:44,547 INFO L93 Difference]: Finished difference Result 1482 states and 2503 transitions. [2021-11-09 10:35:44,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:35:44,548 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2021-11-09 10:35:44,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:35:44,558 INFO L225 Difference]: With dead ends: 1482 [2021-11-09 10:35:44,558 INFO L226 Difference]: Without dead ends: 1036 [2021-11-09 10:35:44,559 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 10:35:44,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1036 states. [2021-11-09 10:35:44,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 1034. [2021-11-09 10:35:44,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1034 states, 1033 states have (on average 1.685382381413359) internal successors, (1741), 1033 states have internal predecessors, (1741), 0 states have call successors, (0), 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 10:35:44,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1741 transitions. [2021-11-09 10:35:44,622 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1741 transitions. Word has length 116 [2021-11-09 10:35:44,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:35:44,623 INFO L470 AbstractCegarLoop]: Abstraction has 1034 states and 1741 transitions. [2021-11-09 10:35:44,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:35:44,625 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1741 transitions. [2021-11-09 10:35:44,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-09 10:35:44,632 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:35:44,632 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:35:44,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-09 10:35:44,632 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:35:44,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:35:44,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1185652755, now seen corresponding path program 1 times [2021-11-09 10:35:44,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:35:44,634 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60276664] [2021-11-09 10:35:44,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:35:44,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:35:44,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:35:44,790 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 10:35:44,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:35:44,791 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60276664] [2021-11-09 10:35:44,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60276664] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:35:44,791 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:35:44,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:35:44,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825900077] [2021-11-09 10:35:44,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:35:44,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:35:44,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:35:44,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:35:44,798 INFO L87 Difference]: Start difference. First operand 1034 states and 1741 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 10:35:44,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:35:44,870 INFO L93 Difference]: Finished difference Result 2654 states and 4471 transitions. [2021-11-09 10:35:44,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:35:44,871 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 119 [2021-11-09 10:35:44,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:35:44,897 INFO L225 Difference]: With dead ends: 2654 [2021-11-09 10:35:44,897 INFO L226 Difference]: Without dead ends: 1804 [2021-11-09 10:35:44,899 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 10:35:44,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1804 states. [2021-11-09 10:35:44,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1804 to 1802. [2021-11-09 10:35:44,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1802 states, 1801 states have (on average 1.6796224319822322) internal successors, (3025), 1801 states have internal predecessors, (3025), 0 states have call successors, (0), 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 10:35:44,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1802 states to 1802 states and 3025 transitions. [2021-11-09 10:35:44,994 INFO L78 Accepts]: Start accepts. Automaton has 1802 states and 3025 transitions. Word has length 119 [2021-11-09 10:35:44,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:35:44,995 INFO L470 AbstractCegarLoop]: Abstraction has 1802 states and 3025 transitions. [2021-11-09 10:35:44,995 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 10:35:44,996 INFO L276 IsEmpty]: Start isEmpty. Operand 1802 states and 3025 transitions. [2021-11-09 10:35:44,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-09 10:35:44,999 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:35:44,999 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:35:45,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-09 10:35:45,000 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:35:45,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:35:45,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1443494714, now seen corresponding path program 1 times [2021-11-09 10:35:45,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:35:45,007 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364509513] [2021-11-09 10:35:45,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:35:45,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:35:45,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:35:45,235 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 10:35:45,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:35:45,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364509513] [2021-11-09 10:35:45,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364509513] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:35:45,237 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:35:45,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-09 10:35:45,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431177778] [2021-11-09 10:35:45,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 10:35:45,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:35:45,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 10:35:45,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-09 10:35:45,240 INFO L87 Difference]: Start difference. First operand 1802 states and 3025 transitions. Second operand has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 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 10:35:45,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:35:45,581 INFO L93 Difference]: Finished difference Result 6812 states and 11506 transitions. [2021-11-09 10:35:45,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 10:35:45,585 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2021-11-09 10:35:45,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:35:45,621 INFO L225 Difference]: With dead ends: 6812 [2021-11-09 10:35:45,621 INFO L226 Difference]: Without dead ends: 5194 [2021-11-09 10:35:45,624 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-09 10:35:45,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5194 states. [2021-11-09 10:35:45,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5194 to 4080. [2021-11-09 10:35:45,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4080 states, 4079 states have (on average 1.682275067418485) internal successors, (6862), 4079 states have internal predecessors, (6862), 0 states have call successors, (0), 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 10:35:45,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4080 states to 4080 states and 6862 transitions. [2021-11-09 10:35:45,851 INFO L78 Accepts]: Start accepts. Automaton has 4080 states and 6862 transitions. Word has length 122 [2021-11-09 10:35:45,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:35:45,852 INFO L470 AbstractCegarLoop]: Abstraction has 4080 states and 6862 transitions. [2021-11-09 10:35:45,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 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 10:35:45,852 INFO L276 IsEmpty]: Start isEmpty. Operand 4080 states and 6862 transitions. [2021-11-09 10:35:45,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-09 10:35:45,857 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:35:45,858 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:35:45,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-09 10:35:45,858 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:35:45,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:35:45,860 INFO L85 PathProgramCache]: Analyzing trace with hash 401697485, now seen corresponding path program 1 times [2021-11-09 10:35:45,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:35:45,860 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641590214] [2021-11-09 10:35:45,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:35:45,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:35:45,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:35:46,008 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 10:35:46,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:35:46,008 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641590214] [2021-11-09 10:35:46,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641590214] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:35:46,009 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:35:46,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 10:35:46,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006014293] [2021-11-09 10:35:46,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:35:46,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:35:46,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:35:46,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:35:46,012 INFO L87 Difference]: Start difference. First operand 4080 states and 6862 transitions. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 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 10:35:46,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:35:46,256 INFO L93 Difference]: Finished difference Result 10608 states and 17924 transitions. [2021-11-09 10:35:46,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 10:35:46,256 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 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 123 [2021-11-09 10:35:46,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:35:46,308 INFO L225 Difference]: With dead ends: 10608 [2021-11-09 10:35:46,308 INFO L226 Difference]: Without dead ends: 6712 [2021-11-09 10:35:46,315 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:35:46,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6712 states. [2021-11-09 10:35:46,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6712 to 6028. [2021-11-09 10:35:46,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6028 states, 6027 states have (on average 1.6845860295337647) internal successors, (10153), 6027 states have internal predecessors, (10153), 0 states have call successors, (0), 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 10:35:46,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6028 states to 6028 states and 10153 transitions. [2021-11-09 10:35:46,637 INFO L78 Accepts]: Start accepts. Automaton has 6028 states and 10153 transitions. Word has length 123 [2021-11-09 10:35:46,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:35:46,638 INFO L470 AbstractCegarLoop]: Abstraction has 6028 states and 10153 transitions. [2021-11-09 10:35:46,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 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 10:35:46,639 INFO L276 IsEmpty]: Start isEmpty. Operand 6028 states and 10153 transitions. [2021-11-09 10:35:46,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-09 10:35:46,645 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:35:46,646 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:35:46,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-09 10:35:46,646 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:35:46,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:35:46,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1728148576, now seen corresponding path program 1 times [2021-11-09 10:35:46,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:35:46,647 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521676346] [2021-11-09 10:35:46,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:35:46,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:35:46,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:35:46,751 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 10:35:46,751 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:35:46,752 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521676346] [2021-11-09 10:35:46,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521676346] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:35:46,752 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:35:46,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:35:46,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35069768] [2021-11-09 10:35:46,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:35:46,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:35:46,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:35:46,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:35:46,761 INFO L87 Difference]: Start difference. First operand 6028 states and 10153 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:35:47,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:35:47,082 INFO L93 Difference]: Finished difference Result 13356 states and 22600 transitions. [2021-11-09 10:35:47,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:35:47,083 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-11-09 10:35:47,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:35:47,165 INFO L225 Difference]: With dead ends: 13356 [2021-11-09 10:35:47,165 INFO L226 Difference]: Without dead ends: 9246 [2021-11-09 10:35:47,173 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 10:35:47,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9246 states. [2021-11-09 10:35:47,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9246 to 9244. [2021-11-09 10:35:47,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9244 states, 9243 states have (on average 1.6832197338526453) internal successors, (15558), 9243 states have internal predecessors, (15558), 0 states have call successors, (0), 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 10:35:47,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9244 states to 9244 states and 15558 transitions. [2021-11-09 10:35:47,712 INFO L78 Accepts]: Start accepts. Automaton has 9244 states and 15558 transitions. Word has length 124 [2021-11-09 10:35:47,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:35:47,713 INFO L470 AbstractCegarLoop]: Abstraction has 9244 states and 15558 transitions. [2021-11-09 10:35:47,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:35:47,714 INFO L276 IsEmpty]: Start isEmpty. Operand 9244 states and 15558 transitions. [2021-11-09 10:35:47,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-09 10:35:47,718 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:35:47,718 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:35:47,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-09 10:35:47,718 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:35:47,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:35:47,719 INFO L85 PathProgramCache]: Analyzing trace with hash -404829920, now seen corresponding path program 1 times [2021-11-09 10:35:47,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:35:47,721 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642287519] [2021-11-09 10:35:47,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:35:47,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:35:47,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:35:47,830 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 10:35:47,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:35:47,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642287519] [2021-11-09 10:35:47,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642287519] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:35:47,831 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:35:47,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:35:47,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069097714] [2021-11-09 10:35:47,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:35:47,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:35:47,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:35:47,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:35:47,834 INFO L87 Difference]: Start difference. First operand 9244 states and 15558 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:35:48,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:35:48,197 INFO L93 Difference]: Finished difference Result 18159 states and 30575 transitions. [2021-11-09 10:35:48,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:35:48,198 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-11-09 10:35:48,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:35:48,239 INFO L225 Difference]: With dead ends: 18159 [2021-11-09 10:35:48,239 INFO L226 Difference]: Without dead ends: 13125 [2021-11-09 10:35:48,253 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 10:35:48,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13125 states. [2021-11-09 10:35:48,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13125 to 13123. [2021-11-09 10:35:48,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13123 states, 13122 states have (on average 1.6766499009297364) internal successors, (22001), 13122 states have internal predecessors, (22001), 0 states have call successors, (0), 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 10:35:48,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13123 states to 13123 states and 22001 transitions. [2021-11-09 10:35:48,919 INFO L78 Accepts]: Start accepts. Automaton has 13123 states and 22001 transitions. Word has length 124 [2021-11-09 10:35:48,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:35:48,920 INFO L470 AbstractCegarLoop]: Abstraction has 13123 states and 22001 transitions. [2021-11-09 10:35:48,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:35:48,920 INFO L276 IsEmpty]: Start isEmpty. Operand 13123 states and 22001 transitions. [2021-11-09 10:35:48,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-09 10:35:48,923 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:35:48,923 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:35:48,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-09 10:35:48,924 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:35:48,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:35:48,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1992868756, now seen corresponding path program 1 times [2021-11-09 10:35:48,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:35:48,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292265591] [2021-11-09 10:35:48,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:35:48,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:35:48,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:35:49,032 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 10:35:49,033 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:35:49,033 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292265591] [2021-11-09 10:35:49,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292265591] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:35:49,033 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:35:49,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:35:49,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455669140] [2021-11-09 10:35:49,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:35:49,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:35:49,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:35:49,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:35:49,037 INFO L87 Difference]: Start difference. First operand 13123 states and 22001 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:35:49,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:35:49,559 INFO L93 Difference]: Finished difference Result 27325 states and 45847 transitions. [2021-11-09 10:35:49,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:35:49,560 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-11-09 10:35:49,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:35:49,613 INFO L225 Difference]: With dead ends: 27325 [2021-11-09 10:35:49,613 INFO L226 Difference]: Without dead ends: 19204 [2021-11-09 10:35:49,721 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 10:35:49,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19204 states. [2021-11-09 10:35:50,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19204 to 19202. [2021-11-09 10:35:50,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19202 states, 19201 states have (on average 1.6689234935680433) internal successors, (32045), 19201 states have internal predecessors, (32045), 0 states have call successors, (0), 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 10:35:50,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19202 states to 19202 states and 32045 transitions. [2021-11-09 10:35:50,594 INFO L78 Accepts]: Start accepts. Automaton has 19202 states and 32045 transitions. Word has length 124 [2021-11-09 10:35:50,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:35:50,595 INFO L470 AbstractCegarLoop]: Abstraction has 19202 states and 32045 transitions. [2021-11-09 10:35:50,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:35:50,596 INFO L276 IsEmpty]: Start isEmpty. Operand 19202 states and 32045 transitions. [2021-11-09 10:35:50,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-09 10:35:50,598 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:35:50,598 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:35:50,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-09 10:35:50,599 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:35:50,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:35:50,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1937085149, now seen corresponding path program 1 times [2021-11-09 10:35:50,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:35:50,601 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772597360] [2021-11-09 10:35:50,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:35:50,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:35:50,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:35:50,719 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 10:35:50,719 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:35:50,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772597360] [2021-11-09 10:35:50,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772597360] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:35:50,720 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:35:50,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 10:35:50,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330654465] [2021-11-09 10:35:50,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:35:50,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:35:50,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:35:50,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:35:50,723 INFO L87 Difference]: Start difference. First operand 19202 states and 32045 transitions. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:35:51,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:35:51,835 INFO L93 Difference]: Finished difference Result 50889 states and 85143 transitions. [2021-11-09 10:35:51,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 10:35:51,836 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-11-09 10:35:51,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:35:51,945 INFO L225 Difference]: With dead ends: 50889 [2021-11-09 10:35:51,946 INFO L226 Difference]: Without dead ends: 31968 [2021-11-09 10:35:51,981 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:35:52,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31968 states. [2021-11-09 10:35:53,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31968 to 28727. [2021-11-09 10:35:53,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28727 states, 28726 states have (on average 1.6645199470862633) internal successors, (47815), 28726 states have internal predecessors, (47815), 0 states have call successors, (0), 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 10:35:53,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28727 states to 28727 states and 47815 transitions. [2021-11-09 10:35:53,332 INFO L78 Accepts]: Start accepts. Automaton has 28727 states and 47815 transitions. Word has length 124 [2021-11-09 10:35:53,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:35:53,333 INFO L470 AbstractCegarLoop]: Abstraction has 28727 states and 47815 transitions. [2021-11-09 10:35:53,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:35:53,334 INFO L276 IsEmpty]: Start isEmpty. Operand 28727 states and 47815 transitions. [2021-11-09 10:35:53,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-09 10:35:53,336 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:35:53,337 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:35:53,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-09 10:35:53,337 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:35:53,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:35:53,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1043679724, now seen corresponding path program 1 times [2021-11-09 10:35:53,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:35:53,339 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955327960] [2021-11-09 10:35:53,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:35:53,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:35:53,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:35:53,419 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 10:35:53,419 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:35:53,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955327960] [2021-11-09 10:35:53,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955327960] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:35:53,420 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:35:53,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:35:53,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196383936] [2021-11-09 10:35:53,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:35:53,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:35:53,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:35:53,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:35:53,423 INFO L87 Difference]: Start difference. First operand 28727 states and 47815 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:35:54,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:35:54,432 INFO L93 Difference]: Finished difference Result 63134 states and 105067 transitions. [2021-11-09 10:35:54,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:35:54,433 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-11-09 10:35:54,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:35:54,561 INFO L225 Difference]: With dead ends: 63134 [2021-11-09 10:35:54,561 INFO L226 Difference]: Without dead ends: 43148 [2021-11-09 10:35:54,596 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 10:35:54,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43148 states. [2021-11-09 10:35:56,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43148 to 43146. [2021-11-09 10:35:56,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43146 states, 43145 states have (on average 1.6541198284853402) internal successors, (71367), 43145 states have internal predecessors, (71367), 0 states have call successors, (0), 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 10:35:56,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43146 states to 43146 states and 71367 transitions. [2021-11-09 10:35:56,565 INFO L78 Accepts]: Start accepts. Automaton has 43146 states and 71367 transitions. Word has length 124 [2021-11-09 10:35:56,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:35:56,574 INFO L470 AbstractCegarLoop]: Abstraction has 43146 states and 71367 transitions. [2021-11-09 10:35:56,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:35:56,575 INFO L276 IsEmpty]: Start isEmpty. Operand 43146 states and 71367 transitions. [2021-11-09 10:35:56,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-09 10:35:56,577 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:35:56,577 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:35:56,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-09 10:35:56,578 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:35:56,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:35:56,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1836500476, now seen corresponding path program 1 times [2021-11-09 10:35:56,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:35:56,579 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410295068] [2021-11-09 10:35:56,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:35:56,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:35:56,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:35:56,691 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 10:35:56,692 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:35:56,692 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410295068] [2021-11-09 10:35:56,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410295068] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:35:56,693 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:35:56,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 10:35:56,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877282051] [2021-11-09 10:35:56,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:35:56,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:35:56,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:35:56,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:35:56,695 INFO L87 Difference]: Start difference. First operand 43146 states and 71367 transitions. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 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 10:35:58,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:35:58,800 INFO L93 Difference]: Finished difference Result 122950 states and 203615 transitions. [2021-11-09 10:35:58,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 10:35:58,800 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 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 125 [2021-11-09 10:35:58,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:35:59,077 INFO L225 Difference]: With dead ends: 122950 [2021-11-09 10:35:59,077 INFO L226 Difference]: Without dead ends: 80038 [2021-11-09 10:35:59,134 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:35:59,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80038 states. [2021-11-09 10:36:01,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80038 to 68661. [2021-11-09 10:36:01,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68661 states, 68660 states have (on average 1.647640547625983) internal successors, (113127), 68660 states have internal predecessors, (113127), 0 states have call successors, (0), 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 10:36:01,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68661 states to 68661 states and 113127 transitions. [2021-11-09 10:36:01,512 INFO L78 Accepts]: Start accepts. Automaton has 68661 states and 113127 transitions. Word has length 125 [2021-11-09 10:36:01,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:36:01,512 INFO L470 AbstractCegarLoop]: Abstraction has 68661 states and 113127 transitions. [2021-11-09 10:36:01,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 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 10:36:01,513 INFO L276 IsEmpty]: Start isEmpty. Operand 68661 states and 113127 transitions. [2021-11-09 10:36:01,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-09 10:36:01,515 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:36:01,516 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:36:01,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-09 10:36:01,516 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:36:01,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:36:01,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1610433780, now seen corresponding path program 1 times [2021-11-09 10:36:01,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:36:01,518 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077447205] [2021-11-09 10:36:01,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:36:01,519 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:36:01,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:36:01,650 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 10:36:01,650 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:36:01,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077447205] [2021-11-09 10:36:01,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077447205] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:36:01,651 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:36:01,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 10:36:01,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646853763] [2021-11-09 10:36:01,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:36:01,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:36:01,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:36:01,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:36:01,654 INFO L87 Difference]: Start difference. First operand 68661 states and 113127 transitions. Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:36:04,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:36:04,788 INFO L93 Difference]: Finished difference Result 221614 states and 365300 transitions. [2021-11-09 10:36:04,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 10:36:04,789 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2021-11-09 10:36:04,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:36:05,134 INFO L225 Difference]: With dead ends: 221614 [2021-11-09 10:36:05,134 INFO L226 Difference]: Without dead ends: 153187 [2021-11-09 10:36:05,235 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:36:05,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153187 states. [2021-11-09 10:36:08,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153187 to 101524. [2021-11-09 10:36:08,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101524 states, 101523 states have (on average 1.6398944081636673) internal successors, (166487), 101523 states have internal predecessors, (166487), 0 states have call successors, (0), 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 10:36:08,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101524 states to 101524 states and 166487 transitions. [2021-11-09 10:36:08,923 INFO L78 Accepts]: Start accepts. Automaton has 101524 states and 166487 transitions. Word has length 126 [2021-11-09 10:36:08,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:36:08,923 INFO L470 AbstractCegarLoop]: Abstraction has 101524 states and 166487 transitions. [2021-11-09 10:36:08,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:36:08,924 INFO L276 IsEmpty]: Start isEmpty. Operand 101524 states and 166487 transitions. [2021-11-09 10:36:08,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-09 10:36:08,926 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:36:08,926 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:36:08,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-09 10:36:08,927 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:36:08,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:36:08,930 INFO L85 PathProgramCache]: Analyzing trace with hash -777514292, now seen corresponding path program 1 times [2021-11-09 10:36:08,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:36:08,932 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420233071] [2021-11-09 10:36:08,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:36:08,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:36:08,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:36:09,159 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 10:36:09,159 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:36:09,159 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420233071] [2021-11-09 10:36:09,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420233071] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:36:09,162 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:36:09,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-09 10:36:09,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058506284] [2021-11-09 10:36:09,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 10:36:09,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:36:09,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 10:36:09,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-09 10:36:09,165 INFO L87 Difference]: Start difference. First operand 101524 states and 166487 transitions. Second operand has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 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 10:36:12,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:36:12,729 INFO L93 Difference]: Finished difference Result 222134 states and 364917 transitions. [2021-11-09 10:36:12,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 10:36:12,730 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 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 128 [2021-11-09 10:36:12,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:36:12,980 INFO L225 Difference]: With dead ends: 222134 [2021-11-09 10:36:12,980 INFO L226 Difference]: Without dead ends: 120844 [2021-11-09 10:36:13,060 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-09 10:36:13,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120844 states. [2021-11-09 10:36:16,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120844 to 101524. [2021-11-09 10:36:16,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101524 states, 101523 states have (on average 1.63373816770584) internal successors, (165862), 101523 states have internal predecessors, (165862), 0 states have call successors, (0), 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 10:36:16,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101524 states to 101524 states and 165862 transitions. [2021-11-09 10:36:16,343 INFO L78 Accepts]: Start accepts. Automaton has 101524 states and 165862 transitions. Word has length 128 [2021-11-09 10:36:16,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:36:16,343 INFO L470 AbstractCegarLoop]: Abstraction has 101524 states and 165862 transitions. [2021-11-09 10:36:16,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 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 10:36:16,344 INFO L276 IsEmpty]: Start isEmpty. Operand 101524 states and 165862 transitions. [2021-11-09 10:36:16,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-09 10:36:16,346 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:36:16,346 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:36:16,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-09 10:36:16,347 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:36:16,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:36:16,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1216965369, now seen corresponding path program 1 times [2021-11-09 10:36:16,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:36:16,348 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454568721] [2021-11-09 10:36:16,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:36:16,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:36:16,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:36:16,618 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 10:36:16,618 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:36:16,618 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454568721] [2021-11-09 10:36:16,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454568721] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:36:16,619 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:36:16,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-09 10:36:16,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058983162] [2021-11-09 10:36:16,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 10:36:16,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:36:16,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 10:36:16,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-09 10:36:16,622 INFO L87 Difference]: Start difference. First operand 101524 states and 165862 transitions. Second operand has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:36:21,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:36:21,939 INFO L93 Difference]: Finished difference Result 337669 states and 554262 transitions. [2021-11-09 10:36:21,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 10:36:21,939 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-09 10:36:21,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:36:22,336 INFO L225 Difference]: With dead ends: 337669 [2021-11-09 10:36:22,336 INFO L226 Difference]: Without dead ends: 236379 [2021-11-09 10:36:22,403 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-09 10:36:22,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236379 states. [2021-11-09 10:36:26,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236379 to 146107. [2021-11-09 10:36:26,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146107 states, 146106 states have (on average 1.6297345762665463) internal successors, (238114), 146106 states have internal predecessors, (238114), 0 states have call successors, (0), 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 10:36:27,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146107 states to 146107 states and 238114 transitions. [2021-11-09 10:36:27,139 INFO L78 Accepts]: Start accepts. Automaton has 146107 states and 238114 transitions. Word has length 131 [2021-11-09 10:36:27,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:36:27,139 INFO L470 AbstractCegarLoop]: Abstraction has 146107 states and 238114 transitions. [2021-11-09 10:36:27,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:36:27,140 INFO L276 IsEmpty]: Start isEmpty. Operand 146107 states and 238114 transitions. [2021-11-09 10:36:27,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-09 10:36:27,141 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:36:27,142 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:36:27,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-09 10:36:27,142 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:36:27,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:36:27,143 INFO L85 PathProgramCache]: Analyzing trace with hash 497433909, now seen corresponding path program 1 times [2021-11-09 10:36:27,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:36:27,143 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181479620] [2021-11-09 10:36:27,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:36:27,143 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:36:27,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:36:27,317 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 10:36:27,317 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:36:27,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181479620] [2021-11-09 10:36:27,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181479620] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:36:27,317 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:36:27,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-09 10:36:27,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813733027] [2021-11-09 10:36:27,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 10:36:27,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:36:27,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 10:36:27,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-09 10:36:27,319 INFO L87 Difference]: Start difference. First operand 146107 states and 238114 transitions. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:36:34,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:36:34,203 INFO L93 Difference]: Finished difference Result 293007 states and 473008 transitions. [2021-11-09 10:36:34,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-09 10:36:34,204 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2021-11-09 10:36:34,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:36:34,722 INFO L225 Difference]: With dead ends: 293007 [2021-11-09 10:36:34,722 INFO L226 Difference]: Without dead ends: 293005 [2021-11-09 10:36:34,766 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-11-09 10:36:35,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293005 states.