./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/token_ring.13.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ddeec4f-d5b4-4266-8a56-5e0fb3557f59/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ddeec4f-d5b4-4266-8a56-5e0fb3557f59/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ddeec4f-d5b4-4266-8a56-5e0fb3557f59/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ddeec4f-d5b4-4266-8a56-5e0fb3557f59/bin/uautomizer-ZXIjhQolGL/config/AutomizerReach.xml -i ../../sv-benchmarks/c/systemc/token_ring.13.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ddeec4f-d5b4-4266-8a56-5e0fb3557f59/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ddeec4f-d5b4-4266-8a56-5e0fb3557f59/bin/uautomizer-ZXIjhQolGL --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 0dcd4461cca64e9ab41b6ad7ff4c6eaa4177bddcca1c612fa1571b77ac664a95 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 04:54:23,970 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 04:54:23,973 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 04:54:24,013 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 04:54:24,014 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 04:54:24,020 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 04:54:24,025 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 04:54:24,030 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 04:54:24,036 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 04:54:24,039 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 04:54:24,040 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 04:54:24,043 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 04:54:24,044 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 04:54:24,054 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 04:54:24,058 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 04:54:24,061 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 04:54:24,064 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 04:54:24,067 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 04:54:24,074 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 04:54:24,079 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 04:54:24,085 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 04:54:24,087 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 04:54:24,091 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 04:54:24,093 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 04:54:24,100 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 04:54:24,101 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 04:54:24,101 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 04:54:24,104 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 04:54:24,105 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 04:54:24,106 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 04:54:24,108 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 04:54:24,109 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 04:54:24,112 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 04:54:24,113 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 04:54:24,115 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 04:54:24,115 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 04:54:24,116 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 04:54:24,117 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 04:54:24,117 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 04:54:24,118 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 04:54:24,119 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 04:54:24,121 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ddeec4f-d5b4-4266-8a56-5e0fb3557f59/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-19 04:54:24,181 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 04:54:24,183 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 04:54:24,183 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 04:54:24,184 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 04:54:24,192 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 04:54:24,193 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 04:54:24,194 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 04:54:24,194 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 04:54:24,195 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 04:54:24,195 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 04:54:24,196 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 04:54:24,197 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 04:54:24,197 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 04:54:24,197 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 04:54:24,197 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 04:54:24,198 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 04:54:24,198 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 04:54:24,198 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 04:54:24,198 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 04:54:24,199 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 04:54:24,199 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 04:54:24,199 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 04:54:24,200 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 04:54:24,200 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 04:54:24,200 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 04:54:24,200 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 04:54:24,201 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 04:54:24,201 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 04:54:24,201 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-19 04:54:24,202 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 04:54:24,202 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-19 04:54:24,202 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-19 04:54:24,203 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 04:54:24,203 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 04:54:24,203 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_5ddeec4f-d5b4-4266-8a56-5e0fb3557f59/bin/uautomizer-ZXIjhQolGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ddeec4f-d5b4-4266-8a56-5e0fb3557f59/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0dcd4461cca64e9ab41b6ad7ff4c6eaa4177bddcca1c612fa1571b77ac664a95 [2021-11-19 04:54:24,536 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 04:54:24,564 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 04:54:24,567 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 04:54:24,569 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 04:54:24,570 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 04:54:24,572 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ddeec4f-d5b4-4266-8a56-5e0fb3557f59/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/systemc/token_ring.13.cil-2.c [2021-11-19 04:54:24,655 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ddeec4f-d5b4-4266-8a56-5e0fb3557f59/bin/uautomizer-ZXIjhQolGL/data/bbf914200/eb3feb9edc164f4b8e854b54371d0e52/FLAG0a8834e51 [2021-11-19 04:54:25,388 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 04:54:25,389 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ddeec4f-d5b4-4266-8a56-5e0fb3557f59/sv-benchmarks/c/systemc/token_ring.13.cil-2.c [2021-11-19 04:54:25,426 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ddeec4f-d5b4-4266-8a56-5e0fb3557f59/bin/uautomizer-ZXIjhQolGL/data/bbf914200/eb3feb9edc164f4b8e854b54371d0e52/FLAG0a8834e51 [2021-11-19 04:54:25,580 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ddeec4f-d5b4-4266-8a56-5e0fb3557f59/bin/uautomizer-ZXIjhQolGL/data/bbf914200/eb3feb9edc164f4b8e854b54371d0e52 [2021-11-19 04:54:25,583 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 04:54:25,585 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 04:54:25,590 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 04:54:25,590 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 04:54:25,595 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 04:54:25,596 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:54:25" (1/1) ... [2021-11-19 04:54:25,599 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a6768f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:25, skipping insertion in model container [2021-11-19 04:54:25,600 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:54:25" (1/1) ... [2021-11-19 04:54:25,609 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 04:54:25,705 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 04:54:25,999 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ddeec4f-d5b4-4266-8a56-5e0fb3557f59/sv-benchmarks/c/systemc/token_ring.13.cil-2.c[671,684] [2021-11-19 04:54:26,293 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:54:26,313 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 04:54:26,327 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ddeec4f-d5b4-4266-8a56-5e0fb3557f59/sv-benchmarks/c/systemc/token_ring.13.cil-2.c[671,684] [2021-11-19 04:54:26,425 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:54:26,460 INFO L208 MainTranslator]: Completed translation [2021-11-19 04:54:26,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:26 WrapperNode [2021-11-19 04:54:26,466 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 04:54:26,468 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 04:54:26,468 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 04:54:26,469 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 04:54:26,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:26" (1/1) ... [2021-11-19 04:54:26,509 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:26" (1/1) ... [2021-11-19 04:54:26,611 INFO L137 Inliner]: procedures = 54, calls = 70, calls flagged for inlining = 38, calls inlined = 38, statements flattened = 911 [2021-11-19 04:54:26,612 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 04:54:26,614 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 04:54:26,614 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 04:54:26,614 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 04:54:26,626 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:26" (1/1) ... [2021-11-19 04:54:26,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:26" (1/1) ... [2021-11-19 04:54:26,642 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:26" (1/1) ... [2021-11-19 04:54:26,644 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:26" (1/1) ... [2021-11-19 04:54:26,670 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:26" (1/1) ... [2021-11-19 04:54:26,715 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:26" (1/1) ... [2021-11-19 04:54:26,719 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:26" (1/1) ... [2021-11-19 04:54:26,726 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 04:54:26,738 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 04:54:26,738 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 04:54:26,738 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 04:54:26,740 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:26" (1/1) ... [2021-11-19 04:54:26,750 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 04:54:26,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ddeec4f-d5b4-4266-8a56-5e0fb3557f59/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:54:26,788 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ddeec4f-d5b4-4266-8a56-5e0fb3557f59/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 04:54:26,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ddeec4f-d5b4-4266-8a56-5e0fb3557f59/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 04:54:26,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 04:54:26,854 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-11-19 04:54:26,855 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-11-19 04:54:26,855 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-11-19 04:54:26,855 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-11-19 04:54:26,855 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-11-19 04:54:26,856 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-11-19 04:54:26,856 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-11-19 04:54:26,856 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-11-19 04:54:26,856 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-11-19 04:54:26,856 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-11-19 04:54:26,857 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-11-19 04:54:26,857 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-11-19 04:54:26,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 04:54:26,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 04:54:26,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 04:54:27,072 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 04:54:27,075 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 04:54:28,231 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 04:54:28,258 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 04:54:28,258 INFO L301 CfgBuilder]: Removed 16 assume(true) statements. [2021-11-19 04:54:28,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:54:28 BoogieIcfgContainer [2021-11-19 04:54:28,263 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 04:54:28,265 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 04:54:28,265 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 04:54:28,271 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 04:54:28,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:54:25" (1/3) ... [2021-11-19 04:54:28,273 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ed8606e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:54:28, skipping insertion in model container [2021-11-19 04:54:28,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:54:26" (2/3) ... [2021-11-19 04:54:28,274 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ed8606e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:54:28, skipping insertion in model container [2021-11-19 04:54:28,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:54:28" (3/3) ... [2021-11-19 04:54:28,276 INFO L111 eAbstractionObserver]: Analyzing ICFG token_ring.13.cil-2.c [2021-11-19 04:54:28,287 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 04:54:28,288 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 04:54:28,350 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 04:54:28,359 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 [2021-11-19 04:54:28,359 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 04:54:28,393 INFO L276 IsEmpty]: Start isEmpty. Operand has 407 states, 372 states have (on average 1.6666666666666667) internal successors, (620), 374 states have internal predecessors, (620), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-11-19 04:54:28,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-11-19 04:54:28,417 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:54:28,418 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:54:28,418 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:54:28,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:54:28,431 INFO L85 PathProgramCache]: Analyzing trace with hash 824370330, now seen corresponding path program 1 times [2021-11-19 04:54:28,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:54:28,444 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825663274] [2021-11-19 04:54:28,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:54:28,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:54:28,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:54:28,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-19 04:54:28,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:54:29,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-19 04:54:29,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:54:29,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-19 04:54:29,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:54:29,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-11-19 04:54:29,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:54:29,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-11-19 04:54:29,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:54:29,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:54:29,424 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:54:29,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825663274] [2021-11-19 04:54:29,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825663274] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:54:29,426 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:54:29,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-19 04:54:29,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073613521] [2021-11-19 04:54:29,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:54:29,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 04:54:29,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:54:29,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 04:54:29,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:54:29,494 INFO L87 Difference]: Start difference. First operand has 407 states, 372 states have (on average 1.6666666666666667) internal successors, (620), 374 states have internal predecessors, (620), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Second operand has 5 states, 5 states have (on average 35.6) internal successors, (178), 3 states have internal predecessors, (178), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-19 04:54:32,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:54:32,425 INFO L93 Difference]: Finished difference Result 954 states and 1591 transitions. [2021-11-19 04:54:32,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 04:54:32,429 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.6) internal successors, (178), 3 states have internal predecessors, (178), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 188 [2021-11-19 04:54:32,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:54:32,471 INFO L225 Difference]: With dead ends: 954 [2021-11-19 04:54:32,472 INFO L226 Difference]: Without dead ends: 555 [2021-11-19 04:54:32,484 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-19 04:54:32,489 INFO L933 BasicCegarLoop]: 706 mSDtfsCounter, 1103 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1128 SdHoareTripleChecker+Valid, 1150 SdHoareTripleChecker+Invalid, 817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-19 04:54:32,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1128 Valid, 1150 Invalid, 817 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [62 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-19 04:54:32,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2021-11-19 04:54:32,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 402. [2021-11-19 04:54:32,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 368 states have (on average 1.578804347826087) internal successors, (581), 369 states have internal predecessors, (581), 27 states have call successors, (27), 6 states have call predecessors, (27), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2021-11-19 04:54:32,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 635 transitions. [2021-11-19 04:54:32,673 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 635 transitions. Word has length 188 [2021-11-19 04:54:32,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:54:32,674 INFO L470 AbstractCegarLoop]: Abstraction has 402 states and 635 transitions. [2021-11-19 04:54:32,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.6) internal successors, (178), 3 states have internal predecessors, (178), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-19 04:54:32,676 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 635 transitions. [2021-11-19 04:54:32,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-11-19 04:54:32,698 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:54:32,700 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:54:32,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 04:54:32,701 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:54:32,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:54:32,711 INFO L85 PathProgramCache]: Analyzing trace with hash 804829208, now seen corresponding path program 1 times [2021-11-19 04:54:32,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:54:32,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168266916] [2021-11-19 04:54:32,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:54:32,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:54:32,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:54:32,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-19 04:54:32,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:54:32,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-19 04:54:32,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:54:32,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-19 04:54:33,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:54:33,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-11-19 04:54:33,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:54:33,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-11-19 04:54:33,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:54:33,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:54:33,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:54:33,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168266916] [2021-11-19 04:54:33,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168266916] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:54:33,094 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:54:33,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 04:54:33,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118972170] [2021-11-19 04:54:33,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:54:33,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 04:54:33,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:54:33,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 04:54:33,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-19 04:54:33,105 INFO L87 Difference]: Start difference. First operand 402 states and 635 transitions. Second operand has 6 states, 6 states have (on average 29.666666666666668) internal successors, (178), 4 states have internal predecessors, (178), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-19 04:54:37,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:54:37,980 INFO L93 Difference]: Finished difference Result 1490 states and 2402 transitions. [2021-11-19 04:54:37,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 04:54:37,981 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.666666666666668) internal successors, (178), 4 states have internal predecessors, (178), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 188 [2021-11-19 04:54:37,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:54:37,996 INFO L225 Difference]: With dead ends: 1490 [2021-11-19 04:54:37,996 INFO L226 Difference]: Without dead ends: 1109 [2021-11-19 04:54:38,004 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-11-19 04:54:38,006 INFO L933 BasicCegarLoop]: 758 mSDtfsCounter, 1668 mSDsluCounter, 1072 mSDsCounter, 0 mSdLazyCounter, 2096 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1688 SdHoareTripleChecker+Valid, 1830 SdHoareTripleChecker+Invalid, 2216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 2096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:54:38,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1688 Valid, 1830 Invalid, 2216 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [120 Valid, 2096 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2021-11-19 04:54:38,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2021-11-19 04:54:38,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 804. [2021-11-19 04:54:38,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 804 states, 741 states have (on average 1.5897435897435896) internal successors, (1178), 743 states have internal predecessors, (1178), 49 states have call successors, (49), 12 states have call predecessors, (49), 13 states have return successors, (52), 49 states have call predecessors, (52), 49 states have call successors, (52) [2021-11-19 04:54:38,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 804 states to 804 states and 1279 transitions. [2021-11-19 04:54:38,164 INFO L78 Accepts]: Start accepts. Automaton has 804 states and 1279 transitions. Word has length 188 [2021-11-19 04:54:38,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:54:38,169 INFO L470 AbstractCegarLoop]: Abstraction has 804 states and 1279 transitions. [2021-11-19 04:54:38,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.666666666666668) internal successors, (178), 4 states have internal predecessors, (178), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-19 04:54:38,170 INFO L276 IsEmpty]: Start isEmpty. Operand 804 states and 1279 transitions. [2021-11-19 04:54:38,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-11-19 04:54:38,175 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:54:38,175 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:54:38,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-19 04:54:38,176 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:54:38,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:54:38,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1471509604, now seen corresponding path program 1 times [2021-11-19 04:54:38,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:54:38,179 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056189404] [2021-11-19 04:54:38,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:54:38,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:54:38,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:54:38,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-19 04:54:38,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:54:38,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-19 04:54:38,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:54:38,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-19 04:54:38,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:54:38,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-11-19 04:54:38,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:54:38,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-11-19 04:54:38,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:54:38,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:54:38,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:54:38,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056189404] [2021-11-19 04:54:38,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056189404] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:54:38,496 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:54:38,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 04:54:38,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123336856] [2021-11-19 04:54:38,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:54:38,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 04:54:38,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:54:38,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 04:54:38,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-19 04:54:38,498 INFO L87 Difference]: Start difference. First operand 804 states and 1279 transitions. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-19 04:54:43,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:54:43,813 INFO L93 Difference]: Finished difference Result 2468 states and 3985 transitions. [2021-11-19 04:54:43,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 04:54:43,815 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 188 [2021-11-19 04:54:43,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:54:43,831 INFO L225 Difference]: With dead ends: 2468 [2021-11-19 04:54:43,831 INFO L226 Difference]: Without dead ends: 1685 [2021-11-19 04:54:43,835 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-11-19 04:54:43,837 INFO L933 BasicCegarLoop]: 1079 mSDtfsCounter, 1706 mSDsluCounter, 2070 mSDsCounter, 0 mSdLazyCounter, 3284 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1726 SdHoareTripleChecker+Valid, 3149 SdHoareTripleChecker+Invalid, 3366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 3284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-11-19 04:54:43,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1726 Valid, 3149 Invalid, 3366 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [82 Valid, 3284 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2021-11-19 04:54:43,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1685 states. [2021-11-19 04:54:43,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1685 to 1177. [2021-11-19 04:54:43,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1177 states, 1085 states have (on average 1.5824884792626728) internal successors, (1717), 1088 states have internal predecessors, (1717), 71 states have call successors, (71), 18 states have call predecessors, (71), 20 states have return successors, (76), 72 states have call predecessors, (76), 71 states have call successors, (76) [2021-11-19 04:54:43,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1864 transitions. [2021-11-19 04:54:43,973 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1864 transitions. Word has length 188 [2021-11-19 04:54:43,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:54:43,974 INFO L470 AbstractCegarLoop]: Abstraction has 1177 states and 1864 transitions. [2021-11-19 04:54:43,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-19 04:54:43,975 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1864 transitions. [2021-11-19 04:54:43,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-11-19 04:54:43,978 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:54:43,979 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:54:43,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-19 04:54:43,979 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:54:43,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:54:43,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1098849370, now seen corresponding path program 1 times [2021-11-19 04:54:43,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:54:43,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759465710] [2021-11-19 04:54:43,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:54:43,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:54:43,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:54:44,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-19 04:54:44,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:54:44,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-19 04:54:44,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:54:44,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-19 04:54:44,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:54:44,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-11-19 04:54:44,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:54:44,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-11-19 04:54:44,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:54:44,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:54:44,210 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:54:44,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759465710] [2021-11-19 04:54:44,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759465710] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:54:44,211 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:54:44,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 04:54:44,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820109527] [2021-11-19 04:54:44,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:54:44,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 04:54:44,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:54:44,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 04:54:44,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-19 04:54:44,214 INFO L87 Difference]: Start difference. First operand 1177 states and 1864 transitions. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-19 04:54:49,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:54:49,200 INFO L93 Difference]: Finished difference Result 3909 states and 6298 transitions. [2021-11-19 04:54:49,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 04:54:49,202 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 188 [2021-11-19 04:54:49,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:54:49,223 INFO L225 Difference]: With dead ends: 3909 [2021-11-19 04:54:49,223 INFO L226 Difference]: Without dead ends: 2753 [2021-11-19 04:54:49,228 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-11-19 04:54:49,230 INFO L933 BasicCegarLoop]: 1067 mSDtfsCounter, 1700 mSDsluCounter, 2066 mSDsCounter, 0 mSdLazyCounter, 3277 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1720 SdHoareTripleChecker+Valid, 3133 SdHoareTripleChecker+Invalid, 3361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 3277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2021-11-19 04:54:49,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1720 Valid, 3133 Invalid, 3361 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [84 Valid, 3277 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2021-11-19 04:54:49,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2753 states. [2021-11-19 04:54:49,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2753 to 1927. [2021-11-19 04:54:49,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1927 states, 1777 states have (on average 1.5768148564997186) internal successors, (2802), 1782 states have internal predecessors, (2802), 115 states have call successors, (115), 30 states have call predecessors, (115), 34 states have return successors, (128), 118 states have call predecessors, (128), 115 states have call successors, (128) [2021-11-19 04:54:49,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1927 states to 1927 states and 3045 transitions. [2021-11-19 04:54:49,427 INFO L78 Accepts]: Start accepts. Automaton has 1927 states and 3045 transitions. Word has length 188 [2021-11-19 04:54:49,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:54:49,428 INFO L470 AbstractCegarLoop]: Abstraction has 1927 states and 3045 transitions. [2021-11-19 04:54:49,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-19 04:54:49,428 INFO L276 IsEmpty]: Start isEmpty. Operand 1927 states and 3045 transitions. [2021-11-19 04:54:49,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-11-19 04:54:49,432 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:54:49,432 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:54:49,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-19 04:54:49,433 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:54:49,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:54:49,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1669121176, now seen corresponding path program 1 times [2021-11-19 04:54:49,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:54:49,434 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835047603] [2021-11-19 04:54:49,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:54:49,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:54:49,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:54:49,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-19 04:54:49,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:54:49,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-19 04:54:49,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:54:49,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-19 04:54:49,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:54:49,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-11-19 04:54:49,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:54:49,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-11-19 04:54:49,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:54:49,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:54:49,676 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:54:49,677 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835047603] [2021-11-19 04:54:49,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835047603] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:54:49,678 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:54:49,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 04:54:49,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533316709] [2021-11-19 04:54:49,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:54:49,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 04:54:49,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:54:49,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 04:54:49,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-19 04:54:49,682 INFO L87 Difference]: Start difference. First operand 1927 states and 3045 transitions. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-19 04:54:54,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:54:54,769 INFO L93 Difference]: Finished difference Result 6685 states and 10723 transitions. [2021-11-19 04:54:54,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 04:54:54,775 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 188 [2021-11-19 04:54:54,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:54:54,809 INFO L225 Difference]: With dead ends: 6685 [2021-11-19 04:54:54,809 INFO L226 Difference]: Without dead ends: 4779 [2021-11-19 04:54:54,818 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-11-19 04:54:54,819 INFO L933 BasicCegarLoop]: 1062 mSDtfsCounter, 1699 mSDsluCounter, 2066 mSDsCounter, 0 mSdLazyCounter, 3269 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1719 SdHoareTripleChecker+Valid, 3128 SdHoareTripleChecker+Invalid, 3353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 3269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-11-19 04:54:54,820 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1719 Valid, 3128 Invalid, 3353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 3269 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-11-19 04:54:54,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4779 states. [2021-11-19 04:54:55,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4779 to 3428. [2021-11-19 04:54:55,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3428 states, 3162 states have (on average 1.5724225173940545) internal successors, (4972), 3171 states have internal predecessors, (4972), 203 states have call successors, (203), 54 states have call predecessors, (203), 62 states have return successors, (238), 210 states have call predecessors, (238), 203 states have call successors, (238) [2021-11-19 04:54:55,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3428 states to 3428 states and 5413 transitions. [2021-11-19 04:54:55,228 INFO L78 Accepts]: Start accepts. Automaton has 3428 states and 5413 transitions. Word has length 188 [2021-11-19 04:54:55,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:54:55,229 INFO L470 AbstractCegarLoop]: Abstraction has 3428 states and 5413 transitions. [2021-11-19 04:54:55,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-19 04:54:55,231 INFO L276 IsEmpty]: Start isEmpty. Operand 3428 states and 5413 transitions. [2021-11-19 04:54:55,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-11-19 04:54:55,236 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:54:55,236 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:54:55,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-19 04:54:55,237 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:54:55,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:54:55,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1221976934, now seen corresponding path program 1 times [2021-11-19 04:54:55,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:54:55,238 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827019307] [2021-11-19 04:54:55,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:54:55,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:54:55,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:54:55,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-19 04:54:55,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:54:55,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-19 04:54:55,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:54:55,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-19 04:54:55,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:54:55,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-11-19 04:54:55,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:54:55,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-11-19 04:54:55,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:54:55,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:54:55,489 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:54:55,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827019307] [2021-11-19 04:54:55,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827019307] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:54:55,490 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:54:55,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 04:54:55,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786344832] [2021-11-19 04:54:55,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:54:55,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 04:54:55,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:54:55,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 04:54:55,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-19 04:54:55,493 INFO L87 Difference]: Start difference. First operand 3428 states and 5413 transitions. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-19 04:55:00,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:55:00,589 INFO L93 Difference]: Finished difference Result 12236 states and 19589 transitions. [2021-11-19 04:55:00,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 04:55:00,590 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 188 [2021-11-19 04:55:00,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:55:00,653 INFO L225 Difference]: With dead ends: 12236 [2021-11-19 04:55:00,653 INFO L226 Difference]: Without dead ends: 8829 [2021-11-19 04:55:00,670 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-11-19 04:55:00,672 INFO L933 BasicCegarLoop]: 1057 mSDtfsCounter, 1698 mSDsluCounter, 2066 mSDsCounter, 0 mSdLazyCounter, 3261 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1718 SdHoareTripleChecker+Valid, 3123 SdHoareTripleChecker+Invalid, 3345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 3261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-11-19 04:55:00,672 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1718 Valid, 3123 Invalid, 3345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 3261 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-11-19 04:55:00,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8829 states. [2021-11-19 04:55:01,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8829 to 6437. [2021-11-19 04:55:01,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6437 states, 5939 states have (on average 1.5696245159117697) internal successors, (9322), 5956 states have internal predecessors, (9322), 379 states have call successors, (379), 102 states have call predecessors, (379), 118 states have return successors, (476), 394 states have call predecessors, (476), 379 states have call successors, (476) [2021-11-19 04:55:01,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6437 states to 6437 states and 10177 transitions. [2021-11-19 04:55:01,344 INFO L78 Accepts]: Start accepts. Automaton has 6437 states and 10177 transitions. Word has length 188 [2021-11-19 04:55:01,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:55:01,345 INFO L470 AbstractCegarLoop]: Abstraction has 6437 states and 10177 transitions. [2021-11-19 04:55:01,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-19 04:55:01,346 INFO L276 IsEmpty]: Start isEmpty. Operand 6437 states and 10177 transitions. [2021-11-19 04:55:01,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-11-19 04:55:01,353 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:55:01,353 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:55:01,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-19 04:55:01,354 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:55:01,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:55:01,355 INFO L85 PathProgramCache]: Analyzing trace with hash -2007974824, now seen corresponding path program 1 times [2021-11-19 04:55:01,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:55:01,355 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729049944] [2021-11-19 04:55:01,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:55:01,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:55:01,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:55:01,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-19 04:55:01,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:55:01,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-19 04:55:01,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:55:01,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-19 04:55:01,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:55:01,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-11-19 04:55:01,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:55:01,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-11-19 04:55:01,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:55:01,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:55:01,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:55:01,640 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729049944] [2021-11-19 04:55:01,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729049944] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:55:01,640 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:55:01,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 04:55:01,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192324426] [2021-11-19 04:55:01,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:55:01,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 04:55:01,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:55:01,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 04:55:01,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-19 04:55:01,648 INFO L87 Difference]: Start difference. First operand 6437 states and 10177 transitions. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-19 04:55:06,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:55:06,660 INFO L93 Difference]: Finished difference Result 23339 states and 37383 transitions. [2021-11-19 04:55:06,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 04:55:06,660 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 188 [2021-11-19 04:55:06,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:55:06,764 INFO L225 Difference]: With dead ends: 23339 [2021-11-19 04:55:06,765 INFO L226 Difference]: Without dead ends: 16923 [2021-11-19 04:55:06,799 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-11-19 04:55:06,801 INFO L933 BasicCegarLoop]: 793 mSDtfsCounter, 1807 mSDsluCounter, 1379 mSDsCounter, 0 mSdLazyCounter, 2895 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1827 SdHoareTripleChecker+Valid, 2172 SdHoareTripleChecker+Invalid, 3017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 2895 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-19 04:55:06,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1827 Valid, 2172 Invalid, 3017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 2895 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-11-19 04:55:06,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16923 states. [2021-11-19 04:55:08,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16923 to 12470. [2021-11-19 04:55:08,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12470 states, 11508 states have (on average 1.5679527285366701) internal successors, (18044), 11541 states have internal predecessors, (18044), 731 states have call successors, (731), 198 states have call predecessors, (731), 230 states have return successors, (1006), 762 states have call predecessors, (1006), 731 states have call successors, (1006) [2021-11-19 04:55:08,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12470 states to 12470 states and 19781 transitions. [2021-11-19 04:55:08,432 INFO L78 Accepts]: Start accepts. Automaton has 12470 states and 19781 transitions. Word has length 188 [2021-11-19 04:55:08,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:55:08,433 INFO L470 AbstractCegarLoop]: Abstraction has 12470 states and 19781 transitions. [2021-11-19 04:55:08,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-19 04:55:08,434 INFO L276 IsEmpty]: Start isEmpty. Operand 12470 states and 19781 transitions. [2021-11-19 04:55:08,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-11-19 04:55:08,450 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:55:08,450 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:55:08,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-19 04:55:08,450 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:55:08,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:55:08,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1340592934, now seen corresponding path program 1 times [2021-11-19 04:55:08,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:55:08,452 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772617012] [2021-11-19 04:55:08,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:55:08,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:55:08,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:55:08,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-19 04:55:08,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:55:08,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-19 04:55:08,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:55:08,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-19 04:55:08,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:55:08,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-11-19 04:55:08,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:55:08,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-11-19 04:55:08,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:55:08,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:55:08,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:55:08,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772617012] [2021-11-19 04:55:08,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772617012] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:55:08,726 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:55:08,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 04:55:08,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180164541] [2021-11-19 04:55:08,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:55:08,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 04:55:08,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:55:08,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 04:55:08,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-19 04:55:08,730 INFO L87 Difference]: Start difference. First operand 12470 states and 19781 transitions. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-19 04:55:15,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:55:15,617 INFO L93 Difference]: Finished difference Result 45546 states and 73165 transitions. [2021-11-19 04:55:15,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 04:55:15,620 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 188 [2021-11-19 04:55:15,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:55:15,791 INFO L225 Difference]: With dead ends: 45546 [2021-11-19 04:55:15,792 INFO L226 Difference]: Without dead ends: 33097 [2021-11-19 04:55:15,868 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-11-19 04:55:15,869 INFO L933 BasicCegarLoop]: 1047 mSDtfsCounter, 1696 mSDsluCounter, 2066 mSDsCounter, 0 mSdLazyCounter, 3245 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1716 SdHoareTripleChecker+Valid, 3113 SdHoareTripleChecker+Invalid, 3329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 3245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-11-19 04:55:15,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1716 Valid, 3113 Invalid, 3329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 3245 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-11-19 04:55:15,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33097 states. [2021-11-19 04:55:18,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33097 to 24567. [2021-11-19 04:55:18,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24567 states, 22677 states have (on average 1.5669621202099042) internal successors, (35534), 22742 states have internal predecessors, (35534), 1435 states have call successors, (1435), 390 states have call predecessors, (1435), 454 states have return successors, (2228), 1498 states have call predecessors, (2228), 1435 states have call successors, (2228) [2021-11-19 04:55:18,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24567 states to 24567 states and 39197 transitions. [2021-11-19 04:55:18,304 INFO L78 Accepts]: Start accepts. Automaton has 24567 states and 39197 transitions. Word has length 188 [2021-11-19 04:55:18,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:55:18,305 INFO L470 AbstractCegarLoop]: Abstraction has 24567 states and 39197 transitions. [2021-11-19 04:55:18,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-19 04:55:18,306 INFO L276 IsEmpty]: Start isEmpty. Operand 24567 states and 39197 transitions. [2021-11-19 04:55:18,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-11-19 04:55:18,330 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:55:18,331 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:55:18,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-19 04:55:18,331 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:55:18,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:55:18,332 INFO L85 PathProgramCache]: Analyzing trace with hash 759145496, now seen corresponding path program 1 times [2021-11-19 04:55:18,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:55:18,332 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118480332] [2021-11-19 04:55:18,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:55:18,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:55:18,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:55:18,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-19 04:55:18,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:55:18,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-19 04:55:18,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:55:18,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-19 04:55:18,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:55:18,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-11-19 04:55:18,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:55:18,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-11-19 04:55:18,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:55:18,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:55:18,546 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:55:18,546 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118480332] [2021-11-19 04:55:18,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118480332] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:55:18,546 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:55:18,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 04:55:18,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708995869] [2021-11-19 04:55:18,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:55:18,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 04:55:18,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:55:18,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 04:55:18,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-19 04:55:18,549 INFO L87 Difference]: Start difference. First operand 24567 states and 39197 transitions. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-19 04:55:29,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:55:29,318 INFO L93 Difference]: Finished difference Result 89961 states and 145331 transitions. [2021-11-19 04:55:29,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 04:55:29,319 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 188 [2021-11-19 04:55:29,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:55:29,667 INFO L225 Difference]: With dead ends: 89961 [2021-11-19 04:55:29,668 INFO L226 Difference]: Without dead ends: 65415 [2021-11-19 04:55:29,780 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-11-19 04:55:29,783 INFO L933 BasicCegarLoop]: 1042 mSDtfsCounter, 1695 mSDsluCounter, 2066 mSDsCounter, 0 mSdLazyCounter, 3237 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1715 SdHoareTripleChecker+Valid, 3108 SdHoareTripleChecker+Invalid, 3321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 3237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2021-11-19 04:55:29,784 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1715 Valid, 3108 Invalid, 3321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 3237 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2021-11-19 04:55:29,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65415 states. [2021-11-19 04:55:34,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65415 to 48824. [2021-11-19 04:55:35,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48824 states, 45078 states have (on average 1.5663516571276455) internal successors, (70608), 45207 states have internal predecessors, (70608), 2843 states have call successors, (2843), 774 states have call predecessors, (2843), 902 states have return successors, (5158), 2970 states have call predecessors, (5158), 2843 states have call successors, (5158) [2021-11-19 04:55:35,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48824 states to 48824 states and 78609 transitions. [2021-11-19 04:55:35,298 INFO L78 Accepts]: Start accepts. Automaton has 48824 states and 78609 transitions. Word has length 188 [2021-11-19 04:55:35,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:55:35,299 INFO L470 AbstractCegarLoop]: Abstraction has 48824 states and 78609 transitions. [2021-11-19 04:55:35,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-19 04:55:35,299 INFO L276 IsEmpty]: Start isEmpty. Operand 48824 states and 78609 transitions. [2021-11-19 04:55:35,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-11-19 04:55:35,348 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:55:35,349 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:55:35,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-19 04:55:35,349 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:55:35,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:55:35,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1103973658, now seen corresponding path program 1 times [2021-11-19 04:55:35,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:55:35,354 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215096025] [2021-11-19 04:55:35,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:55:35,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:55:35,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:55:35,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-19 04:55:35,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:55:35,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-19 04:55:35,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:55:35,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-19 04:55:35,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:55:35,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-11-19 04:55:35,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:55:35,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-11-19 04:55:35,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:55:35,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:55:35,593 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:55:35,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215096025] [2021-11-19 04:55:35,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215096025] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:55:35,594 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:55:35,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 04:55:35,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300885968] [2021-11-19 04:55:35,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:55:35,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 04:55:35,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:55:35,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 04:55:35,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-19 04:55:35,597 INFO L87 Difference]: Start difference. First operand 48824 states and 78609 transitions. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-19 04:55:44,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:55:44,870 INFO L93 Difference]: Finished difference Result 115381 states and 189072 transitions. [2021-11-19 04:55:44,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 04:55:44,871 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 188 [2021-11-19 04:55:44,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:55:45,215 INFO L225 Difference]: With dead ends: 115381 [2021-11-19 04:55:45,216 INFO L226 Difference]: Without dead ends: 66578 [2021-11-19 04:55:45,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-19 04:55:45,616 INFO L933 BasicCegarLoop]: 672 mSDtfsCounter, 1209 mSDsluCounter, 996 mSDsCounter, 0 mSdLazyCounter, 1568 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1230 SdHoareTripleChecker+Valid, 1668 SdHoareTripleChecker+Invalid, 1658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-19 04:55:45,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1230 Valid, 1668 Invalid, 1658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1568 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-19 04:55:45,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66578 states. [2021-11-19 04:55:50,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66578 to 48824. [2021-11-19 04:55:51,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48824 states, 45078 states have (on average 1.56348995075203) internal successors, (70479), 45207 states have internal predecessors, (70479), 2843 states have call successors, (2843), 774 states have call predecessors, (2843), 902 states have return successors, (5158), 2970 states have call predecessors, (5158), 2843 states have call successors, (5158) [2021-11-19 04:55:51,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48824 states to 48824 states and 78480 transitions. [2021-11-19 04:55:51,486 INFO L78 Accepts]: Start accepts. Automaton has 48824 states and 78480 transitions. Word has length 188 [2021-11-19 04:55:51,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:55:51,487 INFO L470 AbstractCegarLoop]: Abstraction has 48824 states and 78480 transitions. [2021-11-19 04:55:51,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-19 04:55:51,487 INFO L276 IsEmpty]: Start isEmpty. Operand 48824 states and 78480 transitions. [2021-11-19 04:55:51,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-11-19 04:55:51,539 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:55:51,539 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:55:51,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-19 04:55:51,540 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:55:51,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:55:51,541 INFO L85 PathProgramCache]: Analyzing trace with hash 2084928472, now seen corresponding path program 1 times [2021-11-19 04:55:51,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:55:51,541 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302105455] [2021-11-19 04:55:51,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:55:51,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:55:51,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:55:51,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-19 04:55:51,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:55:51,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-11-19 04:55:51,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:55:51,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-19 04:55:51,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:55:51,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-11-19 04:55:51,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:55:51,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-11-19 04:55:51,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:55:51,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:55:51,811 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:55:51,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302105455] [2021-11-19 04:55:51,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302105455] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:55:51,812 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:55:51,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 04:55:51,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904265466] [2021-11-19 04:55:51,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:55:51,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 04:55:51,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:55:51,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 04:55:51,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-19 04:55:51,815 INFO L87 Difference]: Start difference. First operand 48824 states and 78480 transitions. Second operand has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-19 04:56:09,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:56:09,845 INFO L93 Difference]: Finished difference Result 178532 states and 290349 transitions. [2021-11-19 04:56:09,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 04:56:09,846 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.428571428571427) internal successors, (178), 5 states have internal predecessors, (178), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 188 [2021-11-19 04:56:09,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:56:10,840 INFO L225 Difference]: With dead ends: 178532 [2021-11-19 04:56:10,840 INFO L226 Difference]: Without dead ends: 129729 [2021-11-19 04:56:11,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-11-19 04:56:11,026 INFO L933 BasicCegarLoop]: 1025 mSDtfsCounter, 1686 mSDsluCounter, 2066 mSDsCounter, 0 mSdLazyCounter, 3197 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1706 SdHoareTripleChecker+Valid, 3091 SdHoareTripleChecker+Invalid, 3284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 3197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2021-11-19 04:56:11,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1706 Valid, 3091 Invalid, 3284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 3197 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2021-11-19 04:56:11,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129729 states.