./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2018/Problem10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11002441-3a6c-4f81-8b24-cbded2cb358c/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11002441-3a6c-4f81-8b24-cbded2cb358c/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11002441-3a6c-4f81-8b24-cbded2cb358c/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11002441-3a6c-4f81-8b24-cbded2cb358c/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2018/Problem10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11002441-3a6c-4f81-8b24-cbded2cb358c/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11002441-3a6c-4f81-8b24-cbded2cb358c/bin/uautomizer-w2VwFs6gM0 --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 aec1fafbe63132c51323898caadb7f7b777fc751b19e58e74eab1930ebd68833 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 16:06:14,984 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 16:06:14,989 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 16:06:15,036 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 16:06:15,036 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 16:06:15,038 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 16:06:15,040 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 16:06:15,044 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 16:06:15,046 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 16:06:15,048 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 16:06:15,050 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 16:06:15,051 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 16:06:15,052 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 16:06:15,054 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 16:06:15,056 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 16:06:15,058 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 16:06:15,060 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 16:06:15,061 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 16:06:15,064 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 16:06:15,068 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 16:06:15,070 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 16:06:15,072 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 16:06:15,086 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 16:06:15,088 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 16:06:15,093 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 16:06:15,093 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 16:06:15,094 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 16:06:15,095 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 16:06:15,096 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 16:06:15,097 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 16:06:15,098 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 16:06:15,099 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 16:06:15,100 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 16:06:15,108 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 16:06:15,110 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 16:06:15,110 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 16:06:15,111 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 16:06:15,112 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 16:06:15,112 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 16:06:15,114 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 16:06:15,115 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 16:06:15,118 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11002441-3a6c-4f81-8b24-cbded2cb358c/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-22 16:06:15,182 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 16:06:15,182 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 16:06:15,183 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 16:06:15,183 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 16:06:15,185 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 16:06:15,185 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 16:06:15,186 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 16:06:15,186 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 16:06:15,186 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 16:06:15,186 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 16:06:15,188 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 16:06:15,188 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 16:06:15,188 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 16:06:15,188 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 16:06:15,189 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 16:06:15,189 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 16:06:15,189 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 16:06:15,189 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 16:06:15,190 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 16:06:15,190 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 16:06:15,190 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 16:06:15,190 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 16:06:15,191 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 16:06:15,191 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 16:06:15,191 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 16:06:15,191 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 16:06:15,192 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 16:06:15,192 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 16:06:15,192 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 16:06:15,192 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 16:06:15,193 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 16:06:15,193 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 16:06:15,193 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_11002441-3a6c-4f81-8b24-cbded2cb358c/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11002441-3a6c-4f81-8b24-cbded2cb358c/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aec1fafbe63132c51323898caadb7f7b777fc751b19e58e74eab1930ebd68833 [2021-11-22 16:06:15,565 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 16:06:15,592 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 16:06:15,596 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 16:06:15,597 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 16:06:15,598 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 16:06:15,600 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11002441-3a6c-4f81-8b24-cbded2cb358c/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/eca-rers2018/Problem10.c [2021-11-22 16:06:15,684 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11002441-3a6c-4f81-8b24-cbded2cb358c/bin/uautomizer-w2VwFs6gM0/data/b8d4a2fc4/7a668d9ed272462eb259046ac5f689e4/FLAGea635d224 [2021-11-22 16:06:16,467 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 16:06:16,467 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11002441-3a6c-4f81-8b24-cbded2cb358c/sv-benchmarks/c/eca-rers2018/Problem10.c [2021-11-22 16:06:16,490 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11002441-3a6c-4f81-8b24-cbded2cb358c/bin/uautomizer-w2VwFs6gM0/data/b8d4a2fc4/7a668d9ed272462eb259046ac5f689e4/FLAGea635d224 [2021-11-22 16:06:16,579 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11002441-3a6c-4f81-8b24-cbded2cb358c/bin/uautomizer-w2VwFs6gM0/data/b8d4a2fc4/7a668d9ed272462eb259046ac5f689e4 [2021-11-22 16:06:16,582 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 16:06:16,584 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 16:06:16,587 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 16:06:16,587 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 16:06:16,594 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 16:06:16,595 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 04:06:16" (1/1) ... [2021-11-22 16:06:16,598 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@343ec689 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:06:16, skipping insertion in model container [2021-11-22 16:06:16,598 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 04:06:16" (1/1) ... [2021-11-22 16:06:16,628 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 16:06:16,731 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 16:06:16,947 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_11002441-3a6c-4f81-8b24-cbded2cb358c/sv-benchmarks/c/eca-rers2018/Problem10.c[778,791] [2021-11-22 16:06:16,952 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_11002441-3a6c-4f81-8b24-cbded2cb358c/sv-benchmarks/c/eca-rers2018/Problem10.c[817,830] [2021-11-22 16:06:17,605 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 16:06:17,634 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 16:06:17,655 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_11002441-3a6c-4f81-8b24-cbded2cb358c/sv-benchmarks/c/eca-rers2018/Problem10.c[778,791] [2021-11-22 16:06:17,657 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_11002441-3a6c-4f81-8b24-cbded2cb358c/sv-benchmarks/c/eca-rers2018/Problem10.c[817,830] [2021-11-22 16:06:17,804 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 16:06:17,973 INFO L208 MainTranslator]: Completed translation [2021-11-22 16:06:17,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:06:17 WrapperNode [2021-11-22 16:06:17,990 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 16:06:17,991 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 16:06:17,992 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 16:06:17,992 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 16:06:18,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:06:17" (1/1) ... [2021-11-22 16:06:18,057 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:06:17" (1/1) ... [2021-11-22 16:06:18,166 INFO L137 Inliner]: procedures = 274, calls = 248, calls flagged for inlining = 244, calls inlined = 244, statements flattened = 965 [2021-11-22 16:06:18,166 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 16:06:18,167 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 16:06:18,167 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 16:06:18,168 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 16:06:18,178 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:06:17" (1/1) ... [2021-11-22 16:06:18,178 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:06:17" (1/1) ... [2021-11-22 16:06:18,186 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:06:17" (1/1) ... [2021-11-22 16:06:18,187 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:06:17" (1/1) ... [2021-11-22 16:06:18,222 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:06:17" (1/1) ... [2021-11-22 16:06:18,244 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:06:17" (1/1) ... [2021-11-22 16:06:18,251 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:06:17" (1/1) ... [2021-11-22 16:06:18,263 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 16:06:18,282 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 16:06:18,283 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 16:06:18,283 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 16:06:18,284 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:06:17" (1/1) ... [2021-11-22 16:06:18,294 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 16:06:18,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11002441-3a6c-4f81-8b24-cbded2cb358c/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:06:18,324 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11002441-3a6c-4f81-8b24-cbded2cb358c/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 16:06:18,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11002441-3a6c-4f81-8b24-cbded2cb358c/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 16:06:18,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 16:06:18,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 16:06:18,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 16:06:18,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 16:06:18,586 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 16:06:18,588 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 16:06:19,952 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 16:06:19,969 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 16:06:19,970 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-22 16:06:19,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 04:06:19 BoogieIcfgContainer [2021-11-22 16:06:19,974 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 16:06:19,976 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 16:06:19,977 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 16:06:19,981 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 16:06:19,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 04:06:16" (1/3) ... [2021-11-22 16:06:19,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32a3f2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 04:06:19, skipping insertion in model container [2021-11-22 16:06:19,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:06:17" (2/3) ... [2021-11-22 16:06:19,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32a3f2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 04:06:19, skipping insertion in model container [2021-11-22 16:06:19,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 04:06:19" (3/3) ... [2021-11-22 16:06:19,985 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem10.c [2021-11-22 16:06:19,992 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 16:06:19,993 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 100 error locations. [2021-11-22 16:06:20,060 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 16:06:20,069 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 [2021-11-22 16:06:20,069 INFO L340 AbstractCegarLoop]: Starting to check reachability of 100 error locations. [2021-11-22 16:06:20,106 INFO L276 IsEmpty]: Start isEmpty. Operand has 660 states, 559 states have (on average 1.5599284436493739) internal successors, (872), 659 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:06:20,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-22 16:06:20,119 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:06:20,120 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:06:20,121 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 97 more)] === [2021-11-22 16:06:20,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:06:20,128 INFO L85 PathProgramCache]: Analyzing trace with hash -315296036, now seen corresponding path program 1 times [2021-11-22 16:06:20,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:06:20,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715867209] [2021-11-22 16:06:20,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:06:20,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:06:20,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:06:20,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:06:20,408 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:06:20,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715867209] [2021-11-22 16:06:20,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715867209] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:06:20,410 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:06:20,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:06:20,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318337746] [2021-11-22 16:06:20,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:06:20,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:06:20,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:06:20,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:06:20,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:06:20,509 INFO L87 Difference]: Start difference. First operand has 660 states, 559 states have (on average 1.5599284436493739) internal successors, (872), 659 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:06:22,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:06:22,333 INFO L93 Difference]: Finished difference Result 1449 states and 2155 transitions. [2021-11-22 16:06:22,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 16:06:22,336 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-22 16:06:22,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:06:22,379 INFO L225 Difference]: With dead ends: 1449 [2021-11-22 16:06:22,389 INFO L226 Difference]: Without dead ends: 782 [2021-11-22 16:06:22,398 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:06:22,402 INFO L933 BasicCegarLoop]: 418 mSDtfsCounter, 371 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 1086 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 1340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 1086 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-22 16:06:22,403 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [371 Valid, 784 Invalid, 1340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 1086 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-22 16:06:22,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2021-11-22 16:06:22,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 653. [2021-11-22 16:06:22,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 653 states, 553 states have (on average 1.484629294755877) internal successors, (821), 652 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:06:22,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 821 transitions. [2021-11-22 16:06:22,579 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 821 transitions. Word has length 12 [2021-11-22 16:06:22,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:06:22,580 INFO L470 AbstractCegarLoop]: Abstraction has 653 states and 821 transitions. [2021-11-22 16:06:22,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:06:22,581 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 821 transitions. [2021-11-22 16:06:22,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-22 16:06:22,583 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:06:22,583 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] [2021-11-22 16:06:22,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 16:06:22,584 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 97 more)] === [2021-11-22 16:06:22,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:06:22,586 INFO L85 PathProgramCache]: Analyzing trace with hash 133466808, now seen corresponding path program 1 times [2021-11-22 16:06:22,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:06:22,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943866694] [2021-11-22 16:06:22,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:06:22,587 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:06:22,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:06:22,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:06:22,660 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:06:22,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943866694] [2021-11-22 16:06:22,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943866694] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:06:22,661 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:06:22,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:06:22,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950644920] [2021-11-22 16:06:22,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:06:22,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:06:22,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:06:22,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:06:22,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:06:22,666 INFO L87 Difference]: Start difference. First operand 653 states and 821 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:06:23,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:06:23,753 INFO L93 Difference]: Finished difference Result 1972 states and 2576 transitions. [2021-11-22 16:06:23,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 16:06:23,755 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-22 16:06:23,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:06:23,766 INFO L225 Difference]: With dead ends: 1972 [2021-11-22 16:06:23,767 INFO L226 Difference]: Without dead ends: 1321 [2021-11-22 16:06:23,771 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:06:23,773 INFO L933 BasicCegarLoop]: 532 mSDtfsCounter, 620 mSDsluCounter, 695 mSDsCounter, 0 mSdLazyCounter, 735 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 620 SdHoareTripleChecker+Valid, 1227 SdHoareTripleChecker+Invalid, 818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:06:23,774 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [620 Valid, 1227 Invalid, 818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 735 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-22 16:06:23,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1321 states. [2021-11-22 16:06:23,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1321 to 984. [2021-11-22 16:06:23,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 984 states, 884 states have (on average 1.490950226244344) internal successors, (1318), 983 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:06:23,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1318 transitions. [2021-11-22 16:06:23,829 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1318 transitions. Word has length 20 [2021-11-22 16:06:23,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:06:23,830 INFO L470 AbstractCegarLoop]: Abstraction has 984 states and 1318 transitions. [2021-11-22 16:06:23,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:06:23,830 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1318 transitions. [2021-11-22 16:06:23,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-22 16:06:23,832 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:06:23,833 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] [2021-11-22 16:06:23,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 16:06:23,833 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 97 more)] === [2021-11-22 16:06:23,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:06:23,835 INFO L85 PathProgramCache]: Analyzing trace with hash -796221635, now seen corresponding path program 1 times [2021-11-22 16:06:23,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:06:23,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110057864] [2021-11-22 16:06:23,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:06:23,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:06:23,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:06:23,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:06:23,932 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:06:23,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110057864] [2021-11-22 16:06:23,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110057864] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:06:23,933 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:06:23,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:06:23,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746507726] [2021-11-22 16:06:23,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:06:23,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:06:23,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:06:23,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:06:23,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:06:23,936 INFO L87 Difference]: Start difference. First operand 984 states and 1318 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:06:24,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:06:24,010 INFO L93 Difference]: Finished difference Result 2937 states and 3931 transitions. [2021-11-22 16:06:24,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:06:24,011 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-22 16:06:24,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:06:24,026 INFO L225 Difference]: With dead ends: 2937 [2021-11-22 16:06:24,026 INFO L226 Difference]: Without dead ends: 1955 [2021-11-22 16:06:24,029 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:06:24,031 INFO L933 BasicCegarLoop]: 688 mSDtfsCounter, 561 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 561 SdHoareTripleChecker+Valid, 1248 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:06:24,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [561 Valid, 1248 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:06:24,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1955 states. [2021-11-22 16:06:24,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1955 to 984. [2021-11-22 16:06:24,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 984 states, 884 states have (on average 1.489819004524887) internal successors, (1317), 983 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:06:24,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1317 transitions. [2021-11-22 16:06:24,083 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1317 transitions. Word has length 23 [2021-11-22 16:06:24,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:06:24,084 INFO L470 AbstractCegarLoop]: Abstraction has 984 states and 1317 transitions. [2021-11-22 16:06:24,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:06:24,084 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1317 transitions. [2021-11-22 16:06:24,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-22 16:06:24,086 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:06:24,087 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] [2021-11-22 16:06:24,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 16:06:24,087 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 97 more)] === [2021-11-22 16:06:24,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:06:24,089 INFO L85 PathProgramCache]: Analyzing trace with hash -95157057, now seen corresponding path program 1 times [2021-11-22 16:06:24,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:06:24,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970844837] [2021-11-22 16:06:24,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:06:24,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:06:24,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:06:24,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:06:24,143 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:06:24,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970844837] [2021-11-22 16:06:24,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970844837] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:06:24,143 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:06:24,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:06:24,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596634750] [2021-11-22 16:06:24,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:06:24,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:06:24,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:06:24,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:06:24,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:06:24,146 INFO L87 Difference]: Start difference. First operand 984 states and 1317 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:06:24,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:06:24,403 INFO L93 Difference]: Finished difference Result 2469 states and 3259 transitions. [2021-11-22 16:06:24,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:06:24,404 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-22 16:06:24,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:06:24,415 INFO L225 Difference]: With dead ends: 2469 [2021-11-22 16:06:24,416 INFO L226 Difference]: Without dead ends: 1487 [2021-11-22 16:06:24,418 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:06:24,420 INFO L933 BasicCegarLoop]: 937 mSDtfsCounter, 531 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 1376 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 16:06:24,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [531 Valid, 1376 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 16:06:24,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1487 states. [2021-11-22 16:06:24,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1487 to 1327. [2021-11-22 16:06:24,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1327 states, 1227 states have (on average 1.5052974735126325) internal successors, (1847), 1326 states have internal predecessors, (1847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:06:24,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1327 states to 1327 states and 1847 transitions. [2021-11-22 16:06:24,470 INFO L78 Accepts]: Start accepts. Automaton has 1327 states and 1847 transitions. Word has length 23 [2021-11-22 16:06:24,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:06:24,471 INFO L470 AbstractCegarLoop]: Abstraction has 1327 states and 1847 transitions. [2021-11-22 16:06:24,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:06:24,472 INFO L276 IsEmpty]: Start isEmpty. Operand 1327 states and 1847 transitions. [2021-11-22 16:06:24,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-22 16:06:24,473 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:06:24,473 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] [2021-11-22 16:06:24,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-22 16:06:24,474 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 97 more)] === [2021-11-22 16:06:24,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:06:24,475 INFO L85 PathProgramCache]: Analyzing trace with hash -538056197, now seen corresponding path program 1 times [2021-11-22 16:06:24,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:06:24,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751973834] [2021-11-22 16:06:24,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:06:24,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:06:24,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:06:24,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:06:24,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:06:24,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751973834] [2021-11-22 16:06:24,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751973834] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:06:24,525 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:06:24,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:06:24,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452072643] [2021-11-22 16:06:24,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:06:24,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:06:24,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:06:24,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:06:24,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:06:24,528 INFO L87 Difference]: Start difference. First operand 1327 states and 1847 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:06:25,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:06:25,289 INFO L93 Difference]: Finished difference Result 3180 states and 4639 transitions. [2021-11-22 16:06:25,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:06:25,290 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-22 16:06:25,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:06:25,303 INFO L225 Difference]: With dead ends: 3180 [2021-11-22 16:06:25,303 INFO L226 Difference]: Without dead ends: 1855 [2021-11-22 16:06:25,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:06:25,308 INFO L933 BasicCegarLoop]: 553 mSDtfsCounter, 259 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 750 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-22 16:06:25,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [259 Valid, 750 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-22 16:06:25,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1855 states. [2021-11-22 16:06:25,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1855 to 1855. [2021-11-22 16:06:25,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1855 states, 1755 states have (on average 1.4444444444444444) internal successors, (2535), 1854 states have internal predecessors, (2535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:06:25,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1855 states to 1855 states and 2535 transitions. [2021-11-22 16:06:25,369 INFO L78 Accepts]: Start accepts. Automaton has 1855 states and 2535 transitions. Word has length 23 [2021-11-22 16:06:25,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:06:25,370 INFO L470 AbstractCegarLoop]: Abstraction has 1855 states and 2535 transitions. [2021-11-22 16:06:25,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:06:25,371 INFO L276 IsEmpty]: Start isEmpty. Operand 1855 states and 2535 transitions. [2021-11-22 16:06:25,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-22 16:06:25,372 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:06:25,372 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] [2021-11-22 16:06:25,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-22 16:06:25,373 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 97 more)] === [2021-11-22 16:06:25,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:06:25,374 INFO L85 PathProgramCache]: Analyzing trace with hash 163008381, now seen corresponding path program 1 times [2021-11-22 16:06:25,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:06:25,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452161265] [2021-11-22 16:06:25,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:06:25,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:06:25,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:06:25,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:06:25,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:06:25,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452161265] [2021-11-22 16:06:25,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452161265] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:06:25,442 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:06:25,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 16:06:25,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566946786] [2021-11-22 16:06:25,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:06:25,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:06:25,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:06:25,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:06:25,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:06:25,444 INFO L87 Difference]: Start difference. First operand 1855 states and 2535 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:06:25,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:06:25,592 INFO L93 Difference]: Finished difference Result 5454 states and 7486 transitions. [2021-11-22 16:06:25,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:06:25,594 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-22 16:06:25,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:06:25,622 INFO L225 Difference]: With dead ends: 5454 [2021-11-22 16:06:25,623 INFO L226 Difference]: Without dead ends: 3601 [2021-11-22 16:06:25,626 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:06:25,633 INFO L933 BasicCegarLoop]: 549 mSDtfsCounter, 508 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 1070 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:06:25,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [508 Valid, 1070 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:06:25,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3601 states. [2021-11-22 16:06:25,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3601 to 3433. [2021-11-22 16:06:25,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3433 states, 3333 states have (on average 1.4458445844584458) internal successors, (4819), 3432 states have internal predecessors, (4819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:06:25,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3433 states to 3433 states and 4819 transitions. [2021-11-22 16:06:25,776 INFO L78 Accepts]: Start accepts. Automaton has 3433 states and 4819 transitions. Word has length 23 [2021-11-22 16:06:25,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:06:25,777 INFO L470 AbstractCegarLoop]: Abstraction has 3433 states and 4819 transitions. [2021-11-22 16:06:25,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:06:25,777 INFO L276 IsEmpty]: Start isEmpty. Operand 3433 states and 4819 transitions. [2021-11-22 16:06:25,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-22 16:06:25,779 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:06:25,779 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] [2021-11-22 16:06:25,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-22 16:06:25,780 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 97 more)] === [2021-11-22 16:06:25,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:06:25,781 INFO L85 PathProgramCache]: Analyzing trace with hash 758301277, now seen corresponding path program 1 times [2021-11-22 16:06:25,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:06:25,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972934029] [2021-11-22 16:06:25,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:06:25,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:06:25,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:06:25,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:06:25,860 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:06:25,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972934029] [2021-11-22 16:06:25,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972934029] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:06:25,861 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:06:25,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 16:06:25,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798451662] [2021-11-22 16:06:25,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:06:25,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:06:25,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:06:25,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:06:25,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:06:25,864 INFO L87 Difference]: Start difference. First operand 3433 states and 4819 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:06:25,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:06:25,991 INFO L93 Difference]: Finished difference Result 10163 states and 14279 transitions. [2021-11-22 16:06:25,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:06:25,993 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-22 16:06:25,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:06:26,037 INFO L225 Difference]: With dead ends: 10163 [2021-11-22 16:06:26,038 INFO L226 Difference]: Without dead ends: 6732 [2021-11-22 16:06:26,044 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:06:26,046 INFO L933 BasicCegarLoop]: 559 mSDtfsCounter, 530 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 1092 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:06:26,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [530 Valid, 1092 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:06:26,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6732 states. [2021-11-22 16:06:26,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6732 to 6540. [2021-11-22 16:06:26,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6540 states, 6440 states have (on average 1.4518633540372672) internal successors, (9350), 6539 states have internal predecessors, (9350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:06:26,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6540 states to 6540 states and 9350 transitions. [2021-11-22 16:06:26,257 INFO L78 Accepts]: Start accepts. Automaton has 6540 states and 9350 transitions. Word has length 24 [2021-11-22 16:06:26,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:06:26,258 INFO L470 AbstractCegarLoop]: Abstraction has 6540 states and 9350 transitions. [2021-11-22 16:06:26,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:06:26,259 INFO L276 IsEmpty]: Start isEmpty. Operand 6540 states and 9350 transitions. [2021-11-22 16:06:26,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-22 16:06:26,260 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:06:26,260 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] [2021-11-22 16:06:26,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-22 16:06:26,261 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 97 more)] === [2021-11-22 16:06:26,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:06:26,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1417483963, now seen corresponding path program 1 times [2021-11-22 16:06:26,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:06:26,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481916340] [2021-11-22 16:06:26,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:06:26,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:06:26,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:06:26,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:06:26,334 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:06:26,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481916340] [2021-11-22 16:06:26,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481916340] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:06:26,336 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:06:26,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:06:26,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646956254] [2021-11-22 16:06:26,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:06:26,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:06:26,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:06:26,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:06:26,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:06:26,338 INFO L87 Difference]: Start difference. First operand 6540 states and 9350 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:06:26,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:06:26,503 INFO L93 Difference]: Finished difference Result 12882 states and 18418 transitions. [2021-11-22 16:06:26,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:06:26,504 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-22 16:06:26,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:06:26,598 INFO L225 Difference]: With dead ends: 12882 [2021-11-22 16:06:26,598 INFO L226 Difference]: Without dead ends: 12876 [2021-11-22 16:06:26,603 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:06:26,604 INFO L933 BasicCegarLoop]: 1003 mSDtfsCounter, 545 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 545 SdHoareTripleChecker+Valid, 1551 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:06:26,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [545 Valid, 1551 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:06:26,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12876 states. [2021-11-22 16:06:27,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12876 to 12682. [2021-11-22 16:06:27,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12682 states, 12582 states have (on average 1.4501669051025274) internal successors, (18246), 12681 states have internal predecessors, (18246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:06:27,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12682 states to 12682 states and 18246 transitions. [2021-11-22 16:06:27,250 INFO L78 Accepts]: Start accepts. Automaton has 12682 states and 18246 transitions. Word has length 25 [2021-11-22 16:06:27,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:06:27,251 INFO L470 AbstractCegarLoop]: Abstraction has 12682 states and 18246 transitions. [2021-11-22 16:06:27,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:06:27,253 INFO L276 IsEmpty]: Start isEmpty. Operand 12682 states and 18246 transitions. [2021-11-22 16:06:27,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-22 16:06:27,257 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:06:27,257 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] [2021-11-22 16:06:27,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-22 16:06:27,265 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 97 more)] === [2021-11-22 16:06:27,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:06:27,267 INFO L85 PathProgramCache]: Analyzing trace with hash 2032511881, now seen corresponding path program 1 times [2021-11-22 16:06:27,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:06:27,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108686811] [2021-11-22 16:06:27,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:06:27,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:06:27,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:06:27,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:06:27,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:06:27,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108686811] [2021-11-22 16:06:27,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108686811] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:06:27,340 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:06:27,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 16:06:27,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22258240] [2021-11-22 16:06:27,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:06:27,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:06:27,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:06:27,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:06:27,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:06:27,344 INFO L87 Difference]: Start difference. First operand 12682 states and 18246 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:06:27,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:06:27,771 INFO L93 Difference]: Finished difference Result 36188 states and 51849 transitions. [2021-11-22 16:06:27,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:06:27,772 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-22 16:06:27,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:06:27,847 INFO L225 Difference]: With dead ends: 36188 [2021-11-22 16:06:27,847 INFO L226 Difference]: Without dead ends: 23508 [2021-11-22 16:06:27,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:06:27,870 INFO L933 BasicCegarLoop]: 545 mSDtfsCounter, 450 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 999 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 16:06:27,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [450 Valid, 999 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 16:06:27,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23508 states. [2021-11-22 16:06:28,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23508 to 23358. [2021-11-22 16:06:28,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23358 states, 23258 states have (on average 1.41172929744604) internal successors, (32834), 23357 states have internal predecessors, (32834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:06:28,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23358 states to 23358 states and 32834 transitions. [2021-11-22 16:06:28,727 INFO L78 Accepts]: Start accepts. Automaton has 23358 states and 32834 transitions. Word has length 25 [2021-11-22 16:06:28,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:06:28,728 INFO L470 AbstractCegarLoop]: Abstraction has 23358 states and 32834 transitions. [2021-11-22 16:06:28,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:06:28,728 INFO L276 IsEmpty]: Start isEmpty. Operand 23358 states and 32834 transitions. [2021-11-22 16:06:28,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-22 16:06:28,729 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:06:28,729 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] [2021-11-22 16:06:28,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-22 16:06:28,731 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 97 more)] === [2021-11-22 16:06:28,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:06:28,732 INFO L85 PathProgramCache]: Analyzing trace with hash -697174447, now seen corresponding path program 1 times [2021-11-22 16:06:28,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:06:28,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202964784] [2021-11-22 16:06:28,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:06:28,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:06:28,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:06:28,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:06:28,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:06:28,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202964784] [2021-11-22 16:06:28,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202964784] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:06:28,790 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:06:28,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:06:28,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220945394] [2021-11-22 16:06:28,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:06:28,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:06:28,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:06:28,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:06:28,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:06:28,793 INFO L87 Difference]: Start difference. First operand 23358 states and 32834 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:06:29,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:06:29,313 INFO L93 Difference]: Finished difference Result 53582 states and 75147 transitions. [2021-11-22 16:06:29,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:06:29,313 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-22 16:06:29,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:06:29,384 INFO L225 Difference]: With dead ends: 53582 [2021-11-22 16:06:29,385 INFO L226 Difference]: Without dead ends: 30226 [2021-11-22 16:06:29,417 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:06:29,418 INFO L933 BasicCegarLoop]: 977 mSDtfsCounter, 451 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 1440 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 16:06:29,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [451 Valid, 1440 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 16:06:29,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30226 states. [2021-11-22 16:06:30,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30226 to 30076. [2021-11-22 16:06:30,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30076 states, 29976 states have (on average 1.377902321857486) internal successors, (41304), 30075 states have internal predecessors, (41304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:06:30,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30076 states to 30076 states and 41304 transitions. [2021-11-22 16:06:30,393 INFO L78 Accepts]: Start accepts. Automaton has 30076 states and 41304 transitions. Word has length 27 [2021-11-22 16:06:30,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:06:30,396 INFO L470 AbstractCegarLoop]: Abstraction has 30076 states and 41304 transitions. [2021-11-22 16:06:30,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:06:30,397 INFO L276 IsEmpty]: Start isEmpty. Operand 30076 states and 41304 transitions. [2021-11-22 16:06:30,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-22 16:06:30,398 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:06:30,398 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] [2021-11-22 16:06:30,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-22 16:06:30,399 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 97 more)] === [2021-11-22 16:06:30,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:06:30,399 INFO L85 PathProgramCache]: Analyzing trace with hash 121232757, now seen corresponding path program 1 times [2021-11-22 16:06:30,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:06:30,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90230300] [2021-11-22 16:06:30,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:06:30,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:06:30,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:06:30,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:06:30,556 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:06:30,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90230300] [2021-11-22 16:06:30,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90230300] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:06:30,557 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:06:30,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:06:30,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391042851] [2021-11-22 16:06:30,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:06:30,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:06:30,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:06:30,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:06:30,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:06:30,560 INFO L87 Difference]: Start difference. First operand 30076 states and 41304 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:06:31,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:06:31,694 INFO L93 Difference]: Finished difference Result 69470 states and 98330 transitions. [2021-11-22 16:06:31,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:06:31,695 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-11-22 16:06:31,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:06:31,780 INFO L225 Difference]: With dead ends: 69470 [2021-11-22 16:06:31,781 INFO L226 Difference]: Without dead ends: 39396 [2021-11-22 16:06:31,807 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:06:31,808 INFO L933 BasicCegarLoop]: 542 mSDtfsCounter, 337 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-22 16:06:31,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [337 Valid, 721 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-22 16:06:31,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39396 states. [2021-11-22 16:06:32,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39396 to 39396. [2021-11-22 16:06:32,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39396 states, 39296 states have (on average 1.3578481270358307) internal successors, (53358), 39395 states have internal predecessors, (53358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:06:32,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39396 states to 39396 states and 53358 transitions. [2021-11-22 16:06:32,908 INFO L78 Accepts]: Start accepts. Automaton has 39396 states and 53358 transitions. Word has length 28 [2021-11-22 16:06:32,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:06:32,908 INFO L470 AbstractCegarLoop]: Abstraction has 39396 states and 53358 transitions. [2021-11-22 16:06:32,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:06:32,911 INFO L276 IsEmpty]: Start isEmpty. Operand 39396 states and 53358 transitions. [2021-11-22 16:06:32,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-22 16:06:32,913 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:06:32,914 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] [2021-11-22 16:06:32,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-22 16:06:32,914 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 97 more)] === [2021-11-22 16:06:32,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:06:32,915 INFO L85 PathProgramCache]: Analyzing trace with hash 61094029, now seen corresponding path program 1 times [2021-11-22 16:06:32,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:06:32,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951533503] [2021-11-22 16:06:32,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:06:32,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:06:32,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:06:32,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:06:32,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:06:32,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951533503] [2021-11-22 16:06:32,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951533503] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:06:32,991 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:06:32,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:06:32,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125803175] [2021-11-22 16:06:32,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:06:32,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:06:32,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:06:32,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:06:32,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:06:32,995 INFO L87 Difference]: Start difference. First operand 39396 states and 53358 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:06:33,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:06:33,920 INFO L93 Difference]: Finished difference Result 114678 states and 154931 transitions. [2021-11-22 16:06:33,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:06:33,921 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-11-22 16:06:33,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:06:34,110 INFO L225 Difference]: With dead ends: 114678 [2021-11-22 16:06:34,110 INFO L226 Difference]: Without dead ends: 75284 [2021-11-22 16:06:34,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:06:34,181 INFO L933 BasicCegarLoop]: 819 mSDtfsCounter, 506 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 1315 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 16:06:34,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [506 Valid, 1315 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 16:06:34,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75284 states. [2021-11-22 16:06:35,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75284 to 75110. [2021-11-22 16:06:35,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75110 states, 75010 states have (on average 1.337261698440208) internal successors, (100308), 75109 states have internal predecessors, (100308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:06:36,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75110 states to 75110 states and 100308 transitions. [2021-11-22 16:06:36,037 INFO L78 Accepts]: Start accepts. Automaton has 75110 states and 100308 transitions. Word has length 32 [2021-11-22 16:06:36,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:06:36,037 INFO L470 AbstractCegarLoop]: Abstraction has 75110 states and 100308 transitions. [2021-11-22 16:06:36,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:06:36,037 INFO L276 IsEmpty]: Start isEmpty. Operand 75110 states and 100308 transitions. [2021-11-22 16:06:36,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-22 16:06:36,038 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:06:36,038 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] [2021-11-22 16:06:36,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-22 16:06:36,039 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 97 more)] === [2021-11-22 16:06:36,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:06:36,039 INFO L85 PathProgramCache]: Analyzing trace with hash 857420601, now seen corresponding path program 1 times [2021-11-22 16:06:36,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:06:36,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524437946] [2021-11-22 16:06:36,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:06:36,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:06:36,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:06:36,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:06:36,071 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:06:36,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524437946] [2021-11-22 16:06:36,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524437946] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:06:36,072 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:06:36,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 16:06:36,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176719868] [2021-11-22 16:06:36,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:06:36,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:06:36,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:06:36,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:06:36,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:06:36,074 INFO L87 Difference]: Start difference. First operand 75110 states and 100308 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:06:36,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:06:36,380 INFO L93 Difference]: Finished difference Result 75110 states and 100308 transitions. [2021-11-22 16:06:36,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:06:36,381 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-22 16:06:36,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:06:36,483 INFO L225 Difference]: With dead ends: 75110 [2021-11-22 16:06:36,483 INFO L226 Difference]: Without dead ends: 75106 [2021-11-22 16:06:36,500 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:06:36,501 INFO L933 BasicCegarLoop]: 551 mSDtfsCounter, 530 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:06:36,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [530 Valid, 551 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:06:36,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75106 states. [2021-11-22 16:06:37,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75106 to 75106. [2021-11-22 16:06:37,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75106 states, 75008 states have (on average 1.3330044795221843) internal successors, (99986), 75105 states have internal predecessors, (99986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:06:38,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75106 states to 75106 states and 99986 transitions. [2021-11-22 16:06:38,130 INFO L78 Accepts]: Start accepts. Automaton has 75106 states and 99986 transitions. Word has length 33 [2021-11-22 16:06:38,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:06:38,132 INFO L470 AbstractCegarLoop]: Abstraction has 75106 states and 99986 transitions. [2021-11-22 16:06:38,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:06:38,133 INFO L276 IsEmpty]: Start isEmpty. Operand 75106 states and 99986 transitions. [2021-11-22 16:06:38,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-22 16:06:38,135 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:06:38,135 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] [2021-11-22 16:06:38,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-22 16:06:38,137 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 97 more)] === [2021-11-22 16:06:38,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:06:38,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1409896657, now seen corresponding path program 1 times [2021-11-22 16:06:38,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:06:38,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478439899] [2021-11-22 16:06:38,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:06:38,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:06:38,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:06:38,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:06:38,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:06:38,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478439899] [2021-11-22 16:06:38,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478439899] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:06:38,175 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:06:38,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:06:38,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124633569] [2021-11-22 16:06:38,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:06:38,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:06:38,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:06:38,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:06:38,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:06:38,178 INFO L87 Difference]: Start difference. First operand 75106 states and 99986 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:06:40,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:06:40,229 INFO L93 Difference]: Finished difference Result 196690 states and 260158 transitions. [2021-11-22 16:06:40,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:06:40,231 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-22 16:06:40,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:06:40,507 INFO L225 Difference]: With dead ends: 196690 [2021-11-22 16:06:40,507 INFO L226 Difference]: Without dead ends: 121586 [2021-11-22 16:06:40,545 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:06:40,548 INFO L933 BasicCegarLoop]: 650 mSDtfsCounter, 302 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 305 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 795 SdHoareTripleChecker+Invalid, 527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 305 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-22 16:06:40,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 795 Invalid, 527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [305 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-22 16:06:40,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121586 states. [2021-11-22 16:06:41,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121586 to 75726. [2021-11-22 16:06:41,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75726 states, 75628 states have (on average 1.282170624636378) internal successors, (96968), 75725 states have internal predecessors, (96968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:06:42,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75726 states to 75726 states and 96968 transitions. [2021-11-22 16:06:42,098 INFO L78 Accepts]: Start accepts. Automaton has 75726 states and 96968 transitions. Word has length 34 [2021-11-22 16:06:42,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:06:42,098 INFO L470 AbstractCegarLoop]: Abstraction has 75726 states and 96968 transitions. [2021-11-22 16:06:42,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:06:42,098 INFO L276 IsEmpty]: Start isEmpty. Operand 75726 states and 96968 transitions. [2021-11-22 16:06:42,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-22 16:06:42,099 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:06:42,099 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] [2021-11-22 16:06:42,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-22 16:06:42,099 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 97 more)] === [2021-11-22 16:06:42,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:06:42,100 INFO L85 PathProgramCache]: Analyzing trace with hash -412200527, now seen corresponding path program 1 times [2021-11-22 16:06:42,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:06:42,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365819706] [2021-11-22 16:06:42,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:06:42,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:06:42,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:06:42,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:06:42,133 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:06:42,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365819706] [2021-11-22 16:06:42,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365819706] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:06:42,134 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:06:42,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:06:42,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753503661] [2021-11-22 16:06:42,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:06:42,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:06:42,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:06:42,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:06:42,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:06:42,151 INFO L87 Difference]: Start difference. First operand 75726 states and 96968 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:06:43,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:06:43,513 INFO L93 Difference]: Finished difference Result 175828 states and 225072 transitions. [2021-11-22 16:06:43,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:06:43,514 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-22 16:06:43,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:06:43,652 INFO L225 Difference]: With dead ends: 175828 [2021-11-22 16:06:43,652 INFO L226 Difference]: Without dead ends: 100104 [2021-11-22 16:06:43,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:06:43,709 INFO L933 BasicCegarLoop]: 517 mSDtfsCounter, 480 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 16:06:43,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [480 Valid, 963 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 16:06:43,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100104 states. [2021-11-22 16:06:45,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100104 to 99944. [2021-11-22 16:06:45,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99944 states, 99846 states have (on average 1.2670111972437554) internal successors, (126506), 99943 states have internal predecessors, (126506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:06:45,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99944 states to 99944 states and 126506 transitions. [2021-11-22 16:06:45,394 INFO L78 Accepts]: Start accepts. Automaton has 99944 states and 126506 transitions. Word has length 38 [2021-11-22 16:06:45,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:06:45,394 INFO L470 AbstractCegarLoop]: Abstraction has 99944 states and 126506 transitions. [2021-11-22 16:06:45,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:06:45,395 INFO L276 IsEmpty]: Start isEmpty. Operand 99944 states and 126506 transitions. [2021-11-22 16:06:45,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-22 16:06:45,396 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:06:45,396 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] [2021-11-22 16:06:45,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-22 16:06:45,397 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 97 more)] === [2021-11-22 16:06:45,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:06:45,397 INFO L85 PathProgramCache]: Analyzing trace with hash 555278933, now seen corresponding path program 1 times [2021-11-22 16:06:45,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:06:45,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163840153] [2021-11-22 16:06:45,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:06:45,398 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:06:45,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:06:45,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:06:45,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:06:45,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163840153] [2021-11-22 16:06:45,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163840153] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:06:45,439 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:06:45,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:06:45,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103258540] [2021-11-22 16:06:45,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:06:45,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:06:45,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:06:45,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:06:45,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:06:45,441 INFO L87 Difference]: Start difference. First operand 99944 states and 126506 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:06:46,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:06:46,841 INFO L93 Difference]: Finished difference Result 179108 states and 225992 transitions. [2021-11-22 16:06:46,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:06:46,842 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-22 16:06:46,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:06:47,115 INFO L225 Difference]: With dead ends: 179108 [2021-11-22 16:06:47,115 INFO L226 Difference]: Without dead ends: 179106 [2021-11-22 16:06:47,147 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:06:47,148 INFO L933 BasicCegarLoop]: 1032 mSDtfsCounter, 525 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 525 SdHoareTripleChecker+Valid, 1570 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:06:47,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [525 Valid, 1570 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:06:47,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179106 states. [2021-11-22 16:06:49,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179106 to 178912. [2021-11-22 16:06:49,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178912 states, 178814 states have (on average 1.2619481696064068) internal successors, (225654), 178911 states have internal predecessors, (225654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:06:49,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178912 states to 178912 states and 225654 transitions. [2021-11-22 16:06:49,890 INFO L78 Accepts]: Start accepts. Automaton has 178912 states and 225654 transitions. Word has length 44 [2021-11-22 16:06:49,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:06:49,891 INFO L470 AbstractCegarLoop]: Abstraction has 178912 states and 225654 transitions. [2021-11-22 16:06:49,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:06:49,891 INFO L276 IsEmpty]: Start isEmpty. Operand 178912 states and 225654 transitions. [2021-11-22 16:06:49,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-22 16:06:49,891 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:06:49,891 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] [2021-11-22 16:06:49,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-22 16:06:49,892 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 97 more)] === [2021-11-22 16:06:49,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:06:49,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1724668112, now seen corresponding path program 1 times [2021-11-22 16:06:49,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:06:49,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445881579] [2021-11-22 16:06:49,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:06:49,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:06:49,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:06:49,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:06:49,924 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:06:49,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445881579] [2021-11-22 16:06:49,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445881579] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:06:49,925 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:06:49,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:06:49,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495326992] [2021-11-22 16:06:49,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:06:49,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:06:49,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:06:49,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:06:49,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:06:49,927 INFO L87 Difference]: Start difference. First operand 178912 states and 225654 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:06:52,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:06:52,561 INFO L93 Difference]: Finished difference Result 467332 states and 589433 transitions. [2021-11-22 16:06:52,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 16:06:52,562 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-11-22 16:06:52,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:06:52,992 INFO L225 Difference]: With dead ends: 467332 [2021-11-22 16:06:52,992 INFO L226 Difference]: Without dead ends: 288422 [2021-11-22 16:06:53,093 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:06:53,093 INFO L933 BasicCegarLoop]: 582 mSDtfsCounter, 813 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 813 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-22 16:06:53,094 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [813 Valid, 814 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 552 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-22 16:06:53,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288422 states. [2021-11-22 16:06:56,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288422 to 178902. [2021-11-22 16:06:56,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178902 states, 178809 states have (on average 1.2522244406042202) internal successors, (223909), 178901 states have internal predecessors, (223909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:06:57,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178902 states to 178902 states and 223909 transitions. [2021-11-22 16:06:57,170 INFO L78 Accepts]: Start accepts. Automaton has 178902 states and 223909 transitions. Word has length 47 [2021-11-22 16:06:57,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:06:57,171 INFO L470 AbstractCegarLoop]: Abstraction has 178902 states and 223909 transitions. [2021-11-22 16:06:57,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:06:57,171 INFO L276 IsEmpty]: Start isEmpty. Operand 178902 states and 223909 transitions. [2021-11-22 16:06:57,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-22 16:06:57,172 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:06:57,172 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] [2021-11-22 16:06:57,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-22 16:06:57,173 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 97 more)] === [2021-11-22 16:06:57,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:06:57,174 INFO L85 PathProgramCache]: Analyzing trace with hash -745739191, now seen corresponding path program 1 times [2021-11-22 16:06:57,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:06:57,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293531195] [2021-11-22 16:06:57,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:06:57,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:06:57,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:06:57,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:06:57,317 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:06:57,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293531195] [2021-11-22 16:06:57,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293531195] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:06:57,317 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:06:57,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:06:57,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005227008] [2021-11-22 16:06:57,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:06:57,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:06:57,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:06:57,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:06:57,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:06:57,319 INFO L87 Difference]: Start difference. First operand 178902 states and 223909 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:06:58,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:06:58,803 INFO L93 Difference]: Finished difference Result 354346 states and 443628 transitions. [2021-11-22 16:06:58,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:06:58,803 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-22 16:06:58,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:06:59,030 INFO L225 Difference]: With dead ends: 354346 [2021-11-22 16:06:59,030 INFO L226 Difference]: Without dead ends: 175446 [2021-11-22 16:06:59,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:06:59,919 INFO L933 BasicCegarLoop]: 283 mSDtfsCounter, 383 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-22 16:06:59,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [383 Valid, 360 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-22 16:07:00,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175446 states. [2021-11-22 16:07:02,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175446 to 97112. [2021-11-22 16:07:02,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97112 states, 97019 states have (on average 1.1899421762747504) internal successors, (115447), 97111 states have internal predecessors, (115447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:07:02,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97112 states to 97112 states and 115447 transitions. [2021-11-22 16:07:02,235 INFO L78 Accepts]: Start accepts. Automaton has 97112 states and 115447 transitions. Word has length 57 [2021-11-22 16:07:02,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:07:02,235 INFO L470 AbstractCegarLoop]: Abstraction has 97112 states and 115447 transitions. [2021-11-22 16:07:02,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:07:02,235 INFO L276 IsEmpty]: Start isEmpty. Operand 97112 states and 115447 transitions. [2021-11-22 16:07:02,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-22 16:07:02,237 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:07:02,237 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] [2021-11-22 16:07:02,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-22 16:07:02,238 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr89ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 97 more)] === [2021-11-22 16:07:02,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:07:02,239 INFO L85 PathProgramCache]: Analyzing trace with hash 316528237, now seen corresponding path program 1 times [2021-11-22 16:07:02,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:07:02,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556298430] [2021-11-22 16:07:02,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:07:02,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:07:02,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:07:02,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:07:02,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:07:02,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556298430] [2021-11-22 16:07:02,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556298430] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:07:02,319 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:07:02,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 16:07:02,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258073771] [2021-11-22 16:07:02,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:07:02,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 16:07:02,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:07:02,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 16:07:02,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:07:02,321 INFO L87 Difference]: Start difference. First operand 97112 states and 115447 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:07:02,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:07:02,772 INFO L93 Difference]: Finished difference Result 138983 states and 164341 transitions. [2021-11-22 16:07:02,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 16:07:02,773 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-22 16:07:02,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:07:02,945 INFO L225 Difference]: With dead ends: 138983 [2021-11-22 16:07:02,945 INFO L226 Difference]: Without dead ends: 138977 [2021-11-22 16:07:02,975 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 16:07:02,976 INFO L933 BasicCegarLoop]: 738 mSDtfsCounter, 443 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 1260 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:07:02,976 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [443 Valid, 1260 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:07:03,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138977 states. [2021-11-22 16:07:05,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138977 to 138797. [2021-11-22 16:07:05,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138797 states, 138704 states have (on average 1.1793171069327488) internal successors, (163576), 138796 states have internal predecessors, (163576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:07:05,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138797 states to 138797 states and 163576 transitions. [2021-11-22 16:07:05,877 INFO L78 Accepts]: Start accepts. Automaton has 138797 states and 163576 transitions. Word has length 112 [2021-11-22 16:07:05,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:07:05,878 INFO L470 AbstractCegarLoop]: Abstraction has 138797 states and 163576 transitions. [2021-11-22 16:07:05,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:07:05,878 INFO L276 IsEmpty]: Start isEmpty. Operand 138797 states and 163576 transitions. [2021-11-22 16:07:05,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-22 16:07:05,880 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:07:05,880 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 16:07:05,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-22 16:07:05,881 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 97 more)] === [2021-11-22 16:07:05,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:07:05,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1608408033, now seen corresponding path program 1 times [2021-11-22 16:07:05,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:07:05,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144525753] [2021-11-22 16:07:05,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:07:05,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:07:05,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:07:05,994 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:07:05,994 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:07:05,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144525753] [2021-11-22 16:07:05,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144525753] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:07:05,994 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:07:05,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 16:07:05,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243259242] [2021-11-22 16:07:05,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:07:05,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 16:07:05,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:07:05,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 16:07:05,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:07:05,996 INFO L87 Difference]: Start difference. First operand 138797 states and 163576 transitions. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 16:07:08,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:07:08,697 INFO L93 Difference]: Finished difference Result 382911 states and 449970 transitions. [2021-11-22 16:07:08,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 16:07:08,698 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2021-11-22 16:07:08,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:07:09,127 INFO L225 Difference]: With dead ends: 382911 [2021-11-22 16:07:09,127 INFO L226 Difference]: Without dead ends: 285807 [2021-11-22 16:07:09,191 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-22 16:07:09,199 INFO L933 BasicCegarLoop]: 897 mSDtfsCounter, 566 mSDsluCounter, 919 mSDsCounter, 0 mSdLazyCounter, 752 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 566 SdHoareTripleChecker+Valid, 1816 SdHoareTripleChecker+Invalid, 814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-22 16:07:09,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [566 Valid, 1816 Invalid, 814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 752 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-22 16:07:09,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285807 states.