./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec11_product36.cil.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_b368bbd5-95f7-4679-a056-a734aacb7bc3/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b368bbd5-95f7-4679-a056-a734aacb7bc3/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_b368bbd5-95f7-4679-a056-a734aacb7bc3/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b368bbd5-95f7-4679-a056-a734aacb7bc3/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec11_product36.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b368bbd5-95f7-4679-a056-a734aacb7bc3/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_b368bbd5-95f7-4679-a056-a734aacb7bc3/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 f422b02f04909f595cd81c18f65f163bde7189dd9d2c25d22c48d8d4d89787b5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 14:42:47,119 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 14:42:47,122 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 14:42:47,176 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 14:42:47,176 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 14:42:47,178 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 14:42:47,181 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 14:42:47,184 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 14:42:47,187 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 14:42:47,189 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 14:42:47,191 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 14:42:47,193 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 14:42:47,193 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 14:42:47,195 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 14:42:47,198 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 14:42:47,200 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 14:42:47,202 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 14:42:47,204 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 14:42:47,207 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 14:42:47,211 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 14:42:47,214 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 14:42:47,216 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 14:42:47,218 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 14:42:47,219 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 14:42:47,224 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 14:42:47,225 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 14:42:47,226 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 14:42:47,227 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 14:42:47,228 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 14:42:47,230 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 14:42:47,231 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 14:42:47,232 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 14:42:47,234 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 14:42:47,235 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 14:42:47,237 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 14:42:47,237 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 14:42:47,238 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 14:42:47,239 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 14:42:47,239 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 14:42:47,240 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 14:42:47,241 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 14:42:47,243 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b368bbd5-95f7-4679-a056-a734aacb7bc3/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-22 14:42:47,274 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 14:42:47,275 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 14:42:47,275 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 14:42:47,275 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 14:42:47,277 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 14:42:47,277 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 14:42:47,278 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 14:42:47,278 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 14:42:47,278 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 14:42:47,278 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 14:42:47,279 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 14:42:47,279 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 14:42:47,279 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 14:42:47,280 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 14:42:47,280 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 14:42:47,280 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 14:42:47,280 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 14:42:47,281 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 14:42:47,281 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 14:42:47,281 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 14:42:47,282 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 14:42:47,282 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 14:42:47,282 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 14:42:47,283 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 14:42:47,283 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 14:42:47,283 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 14:42:47,283 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 14:42:47,284 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 14:42:47,284 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 14:42:47,284 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 14:42:47,285 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 14:42:47,285 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 14:42:47,285 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_b368bbd5-95f7-4679-a056-a734aacb7bc3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b368bbd5-95f7-4679-a056-a734aacb7bc3/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f422b02f04909f595cd81c18f65f163bde7189dd9d2c25d22c48d8d4d89787b5 [2021-11-22 14:42:47,574 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 14:42:47,601 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 14:42:47,604 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 14:42:47,606 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 14:42:47,607 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 14:42:47,609 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b368bbd5-95f7-4679-a056-a734aacb7bc3/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/product-lines/email_spec11_product36.cil.c [2021-11-22 14:42:47,703 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b368bbd5-95f7-4679-a056-a734aacb7bc3/bin/uautomizer-w2VwFs6gM0/data/31c51e831/3e6043b3a159433c999973d7217081c6/FLAG9aa75063d [2021-11-22 14:42:48,518 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 14:42:48,521 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b368bbd5-95f7-4679-a056-a734aacb7bc3/sv-benchmarks/c/product-lines/email_spec11_product36.cil.c [2021-11-22 14:42:48,555 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b368bbd5-95f7-4679-a056-a734aacb7bc3/bin/uautomizer-w2VwFs6gM0/data/31c51e831/3e6043b3a159433c999973d7217081c6/FLAG9aa75063d [2021-11-22 14:42:48,705 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b368bbd5-95f7-4679-a056-a734aacb7bc3/bin/uautomizer-w2VwFs6gM0/data/31c51e831/3e6043b3a159433c999973d7217081c6 [2021-11-22 14:42:48,710 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 14:42:48,713 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 14:42:48,716 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 14:42:48,716 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 14:42:48,720 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 14:42:48,721 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:42:48" (1/1) ... [2021-11-22 14:42:48,724 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42f4f67a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:42:48, skipping insertion in model container [2021-11-22 14:42:48,725 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:42:48" (1/1) ... [2021-11-22 14:42:48,733 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 14:42:48,831 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 14:42:49,314 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_b368bbd5-95f7-4679-a056-a734aacb7bc3/sv-benchmarks/c/product-lines/email_spec11_product36.cil.c[27504,27517] [2021-11-22 14:42:49,487 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 14:42:49,506 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 14:42:49,618 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_b368bbd5-95f7-4679-a056-a734aacb7bc3/sv-benchmarks/c/product-lines/email_spec11_product36.cil.c[27504,27517] [2021-11-22 14:42:49,714 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 14:42:49,765 INFO L208 MainTranslator]: Completed translation [2021-11-22 14:42:49,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:42:49 WrapperNode [2021-11-22 14:42:49,766 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 14:42:49,767 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 14:42:49,767 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 14:42:49,768 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 14:42:49,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:42:49" (1/1) ... [2021-11-22 14:42:49,816 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:42:49" (1/1) ... [2021-11-22 14:42:49,953 INFO L137 Inliner]: procedures = 113, calls = 154, calls flagged for inlining = 77, calls inlined = 202, statements flattened = 2845 [2021-11-22 14:42:49,953 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 14:42:49,954 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 14:42:49,955 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 14:42:49,955 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 14:42:49,966 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:42:49" (1/1) ... [2021-11-22 14:42:49,966 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:42:49" (1/1) ... [2021-11-22 14:42:49,982 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:42:49" (1/1) ... [2021-11-22 14:42:49,982 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:42:49" (1/1) ... [2021-11-22 14:42:50,032 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:42:49" (1/1) ... [2021-11-22 14:42:50,084 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:42:49" (1/1) ... [2021-11-22 14:42:50,091 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:42:49" (1/1) ... [2021-11-22 14:42:50,148 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 14:42:50,149 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 14:42:50,150 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 14:42:50,150 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 14:42:50,151 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:42:49" (1/1) ... [2021-11-22 14:42:50,160 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 14:42:50,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b368bbd5-95f7-4679-a056-a734aacb7bc3/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:42:50,192 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b368bbd5-95f7-4679-a056-a734aacb7bc3/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 14:42:50,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b368bbd5-95f7-4679-a056-a734aacb7bc3/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 14:42:50,247 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-22 14:42:50,247 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 14:42:50,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 14:42:50,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 14:42:50,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 14:42:50,594 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 14:42:50,596 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 14:42:52,205 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 14:42:52,221 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 14:42:52,221 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-22 14:42:52,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:42:52 BoogieIcfgContainer [2021-11-22 14:42:52,225 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 14:42:52,227 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 14:42:52,227 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 14:42:52,231 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 14:42:52,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:42:48" (1/3) ... [2021-11-22 14:42:52,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@270f1785 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:42:52, skipping insertion in model container [2021-11-22 14:42:52,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:42:49" (2/3) ... [2021-11-22 14:42:52,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@270f1785 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:42:52, skipping insertion in model container [2021-11-22 14:42:52,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:42:52" (3/3) ... [2021-11-22 14:42:52,235 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec11_product36.cil.c [2021-11-22 14:42:52,242 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 14:42:52,242 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-22 14:42:52,308 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 14:42:52,316 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 14:42:52,317 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-22 14:42:52,354 INFO L276 IsEmpty]: Start isEmpty. Operand has 540 states, 533 states have (on average 1.6135084427767354) internal successors, (860), 539 states have internal predecessors, (860), 0 states have call successors, (0), 0 states 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 14:42:52,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-22 14:42:52,371 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:42:52,372 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:42:52,373 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 14:42:52,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:42:52,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1038919336, now seen corresponding path program 1 times [2021-11-22 14:42:52,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:42:52,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703820672] [2021-11-22 14:42:52,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:42:52,398 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:42:52,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:42:52,716 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 14:42:52,717 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:42:52,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703820672] [2021-11-22 14:42:52,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703820672] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:42:52,718 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:42:52,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:42:52,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750302974] [2021-11-22 14:42:52,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:42:52,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:42:52,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:42:52,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:42:52,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:42:52,788 INFO L87 Difference]: Start difference. First operand has 540 states, 533 states have (on average 1.6135084427767354) internal successors, (860), 539 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states 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 14:42:53,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:42:53,046 INFO L93 Difference]: Finished difference Result 1577 states and 2520 transitions. [2021-11-22 14:42:53,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:42:53,049 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2021-11-22 14:42:53,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:42:53,091 INFO L225 Difference]: With dead ends: 1577 [2021-11-22 14:42:53,091 INFO L226 Difference]: Without dead ends: 900 [2021-11-22 14:42:53,100 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 14:42:53,105 INFO L933 BasicCegarLoop]: 1659 mSDtfsCounter, 821 mSDsluCounter, 824 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 821 SdHoareTripleChecker+Valid, 2483 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:42:53,106 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [821 Valid, 2483 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:42:53,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 900 states. [2021-11-22 14:42:53,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 900 to 458. [2021-11-22 14:42:53,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 452 states have (on average 1.6150442477876106) internal successors, (730), 457 states have internal predecessors, (730), 0 states have call successors, (0), 0 states 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 14:42:53,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 730 transitions. [2021-11-22 14:42:53,207 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 730 transitions. Word has length 40 [2021-11-22 14:42:53,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:42:53,208 INFO L470 AbstractCegarLoop]: Abstraction has 458 states and 730 transitions. [2021-11-22 14:42:53,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states 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 14:42:53,209 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 730 transitions. [2021-11-22 14:42:53,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-22 14:42:53,212 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:42:53,213 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] [2021-11-22 14:42:53,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 14:42:53,214 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 14:42:53,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:42:53,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1655140697, now seen corresponding path program 1 times [2021-11-22 14:42:53,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:42:53,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495081522] [2021-11-22 14:42:53,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:42:53,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:42:53,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:42:53,335 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 14:42:53,335 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:42:53,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495081522] [2021-11-22 14:42:53,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495081522] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:42:53,337 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:42:53,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:42:53,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625318883] [2021-11-22 14:42:53,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:42:53,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:42:53,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:42:53,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:42:53,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:42:53,341 INFO L87 Difference]: Start difference. First operand 458 states and 730 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states 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 14:42:53,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:42:53,388 INFO L93 Difference]: Finished difference Result 900 states and 1438 transitions. [2021-11-22 14:42:53,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:42:53,389 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2021-11-22 14:42:53,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:42:53,394 INFO L225 Difference]: With dead ends: 900 [2021-11-22 14:42:53,395 INFO L226 Difference]: Without dead ends: 460 [2021-11-22 14:42:53,396 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 14:42:53,398 INFO L933 BasicCegarLoop]: 726 mSDtfsCounter, 710 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 710 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:42:53,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [710 Valid, 733 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:42:53,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2021-11-22 14:42:53,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 458. [2021-11-22 14:42:53,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 452 states have (on average 1.6084070796460177) internal successors, (727), 457 states have internal predecessors, (727), 0 states have call successors, (0), 0 states 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 14:42:53,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 727 transitions. [2021-11-22 14:42:53,434 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 727 transitions. Word has length 42 [2021-11-22 14:42:53,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:42:53,435 INFO L470 AbstractCegarLoop]: Abstraction has 458 states and 727 transitions. [2021-11-22 14:42:53,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states 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 14:42:53,436 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 727 transitions. [2021-11-22 14:42:53,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-22 14:42:53,439 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:42:53,439 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 14:42:53,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 14:42:53,440 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 14:42:53,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:42:53,441 INFO L85 PathProgramCache]: Analyzing trace with hash -837147124, now seen corresponding path program 1 times [2021-11-22 14:42:53,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:42:53,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553065739] [2021-11-22 14:42:53,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:42:53,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:42:53,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:42:53,550 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 14:42:53,551 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:42:53,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553065739] [2021-11-22 14:42:53,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553065739] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:42:53,552 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:42:53,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:42:53,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581425766] [2021-11-22 14:42:53,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:42:53,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:42:53,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:42:53,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:42:53,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:42:53,567 INFO L87 Difference]: Start difference. First operand 458 states and 727 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 14:42:53,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:42:53,599 INFO L93 Difference]: Finished difference Result 819 states and 1287 transitions. [2021-11-22 14:42:53,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:42:53,600 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 14:42:53,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:42:53,604 INFO L225 Difference]: With dead ends: 819 [2021-11-22 14:42:53,605 INFO L226 Difference]: Without dead ends: 461 [2021-11-22 14:42:53,606 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 14:42:53,608 INFO L933 BasicCegarLoop]: 725 mSDtfsCounter, 1 mSDsluCounter, 723 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1448 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:42:53,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 1448 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:42:53,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2021-11-22 14:42:53,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 460. [2021-11-22 14:42:53,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 454 states have (on average 1.605726872246696) internal successors, (729), 459 states have internal predecessors, (729), 0 states have call successors, (0), 0 states 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 14:42:53,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 729 transitions. [2021-11-22 14:42:53,636 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 729 transitions. Word has length 44 [2021-11-22 14:42:53,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:42:53,636 INFO L470 AbstractCegarLoop]: Abstraction has 460 states and 729 transitions. [2021-11-22 14:42:53,637 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 14:42:53,637 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 729 transitions. [2021-11-22 14:42:53,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-22 14:42:53,641 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:42:53,641 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:42:53,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 14:42:53,663 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 14:42:53,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:42:53,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1602156549, now seen corresponding path program 1 times [2021-11-22 14:42:53,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:42:53,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921584430] [2021-11-22 14:42:53,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:42:53,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:42:53,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:42:53,843 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:42:53,843 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:42:53,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921584430] [2021-11-22 14:42:53,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921584430] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 14:42:53,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583996637] [2021-11-22 14:42:53,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:42:53,846 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:42:53,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b368bbd5-95f7-4679-a056-a734aacb7bc3/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:42:53,851 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b368bbd5-95f7-4679-a056-a734aacb7bc3/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:42:53,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b368bbd5-95f7-4679-a056-a734aacb7bc3/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-22 14:42:54,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:42:54,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 717 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 14:42:54,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:42:54,416 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:42:54,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:42:54,557 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:42:54,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583996637] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 14:42:54,558 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 14:42:54,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-22 14:42:54,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359858648] [2021-11-22 14:42:54,559 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 14:42:54,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 14:42:54,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:42:54,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 14:42:54,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-22 14:42:54,562 INFO L87 Difference]: Start difference. First operand 460 states and 729 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:42:54,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:42:54,772 INFO L93 Difference]: Finished difference Result 2129 states and 3394 transitions. [2021-11-22 14:42:54,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 14:42:54,773 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-22 14:42:54,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:42:54,792 INFO L225 Difference]: With dead ends: 2129 [2021-11-22 14:42:54,792 INFO L226 Difference]: Without dead ends: 1771 [2021-11-22 14:42:54,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-22 14:42:54,805 INFO L933 BasicCegarLoop]: 725 mSDtfsCounter, 2099 mSDsluCounter, 4148 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2099 SdHoareTripleChecker+Valid, 4873 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:42:54,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2099 Valid, 4873 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:42:54,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1771 states. [2021-11-22 14:42:54,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1771 to 697. [2021-11-22 14:42:54,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697 states, 691 states have (on average 1.6888567293777135) internal successors, (1167), 696 states have internal predecessors, (1167), 0 states have call successors, (0), 0 states 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 14:42:54,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 1167 transitions. [2021-11-22 14:42:54,900 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 1167 transitions. Word has length 49 [2021-11-22 14:42:54,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:42:54,901 INFO L470 AbstractCegarLoop]: Abstraction has 697 states and 1167 transitions. [2021-11-22 14:42:54,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:42:54,902 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 1167 transitions. [2021-11-22 14:42:54,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-22 14:42:54,909 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:42:54,910 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] [2021-11-22 14:42:54,952 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b368bbd5-95f7-4679-a056-a734aacb7bc3/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-22 14:42:55,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b368bbd5-95f7-4679-a056-a734aacb7bc3/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:42:55,130 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 14:42:55,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:42:55,131 INFO L85 PathProgramCache]: Analyzing trace with hash -246268665, now seen corresponding path program 1 times [2021-11-22 14:42:55,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:42:55,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257097761] [2021-11-22 14:42:55,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:42:55,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:42:55,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:42:55,208 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 14:42:55,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:42:55,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257097761] [2021-11-22 14:42:55,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257097761] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:42:55,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:42:55,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:42:55,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113221897] [2021-11-22 14:42:55,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:42:55,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:42:55,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:42:55,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:42:55,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:42:55,212 INFO L87 Difference]: Start difference. First operand 697 states and 1167 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states 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 14:42:55,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:42:55,304 INFO L93 Difference]: Finished difference Result 1962 states and 3294 transitions. [2021-11-22 14:42:55,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:42:55,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2021-11-22 14:42:55,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:42:55,316 INFO L225 Difference]: With dead ends: 1962 [2021-11-22 14:42:55,316 INFO L226 Difference]: Without dead ends: 1291 [2021-11-22 14:42:55,318 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 14:42:55,319 INFO L933 BasicCegarLoop]: 727 mSDtfsCounter, 698 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 1449 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:42:55,320 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [698 Valid, 1449 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:42:55,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1291 states. [2021-11-22 14:42:55,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1291 to 933. [2021-11-22 14:42:55,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 933 states, 927 states have (on average 1.7238403451995685) internal successors, (1598), 932 states have internal predecessors, (1598), 0 states have call successors, (0), 0 states 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 14:42:55,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 933 states to 933 states and 1598 transitions. [2021-11-22 14:42:55,387 INFO L78 Accepts]: Start accepts. Automaton has 933 states and 1598 transitions. Word has length 56 [2021-11-22 14:42:55,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:42:55,387 INFO L470 AbstractCegarLoop]: Abstraction has 933 states and 1598 transitions. [2021-11-22 14:42:55,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states 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 14:42:55,388 INFO L276 IsEmpty]: Start isEmpty. Operand 933 states and 1598 transitions. [2021-11-22 14:42:55,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-22 14:42:55,390 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:42:55,390 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 14:42:55,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-22 14:42:55,391 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 14:42:55,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:42:55,392 INFO L85 PathProgramCache]: Analyzing trace with hash -720445331, now seen corresponding path program 1 times [2021-11-22 14:42:55,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:42:55,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73212609] [2021-11-22 14:42:55,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:42:55,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:42:55,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:42:55,449 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 14:42:55,449 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:42:55,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73212609] [2021-11-22 14:42:55,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73212609] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:42:55,449 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:42:55,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:42:55,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212741344] [2021-11-22 14:42:55,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:42:55,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:42:55,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:42:55,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:42:55,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:42:55,457 INFO L87 Difference]: Start difference. First operand 933 states and 1598 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 14:42:55,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:42:55,580 INFO L93 Difference]: Finished difference Result 2547 states and 4372 transitions. [2021-11-22 14:42:55,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:42:55,581 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 14:42:55,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:42:55,595 INFO L225 Difference]: With dead ends: 2547 [2021-11-22 14:42:55,595 INFO L226 Difference]: Without dead ends: 1658 [2021-11-22 14:42:55,598 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 14:42:55,601 INFO L933 BasicCegarLoop]: 726 mSDtfsCounter, 696 mSDsluCounter, 714 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 1440 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:42:55,602 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [696 Valid, 1440 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:42:55,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1658 states. [2021-11-22 14:42:55,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1658 to 1300. [2021-11-22 14:42:55,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1300 states, 1294 states have (on average 1.7542503863987635) internal successors, (2270), 1299 states have internal predecessors, (2270), 0 states have call successors, (0), 0 states 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 14:42:55,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1300 states to 1300 states and 2270 transitions. [2021-11-22 14:42:55,709 INFO L78 Accepts]: Start accepts. Automaton has 1300 states and 2270 transitions. Word has length 57 [2021-11-22 14:42:55,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:42:55,710 INFO L470 AbstractCegarLoop]: Abstraction has 1300 states and 2270 transitions. [2021-11-22 14:42:55,710 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 14:42:55,710 INFO L276 IsEmpty]: Start isEmpty. Operand 1300 states and 2270 transitions. [2021-11-22 14:42:55,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-22 14:42:55,714 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:42:55,714 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] [2021-11-22 14:42:55,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-22 14:42:55,715 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 14:42:55,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:42:55,715 INFO L85 PathProgramCache]: Analyzing trace with hash -771501915, now seen corresponding path program 1 times [2021-11-22 14:42:55,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:42:55,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499409186] [2021-11-22 14:42:55,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:42:55,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:42:55,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:42:55,772 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 14:42:55,772 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:42:55,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499409186] [2021-11-22 14:42:55,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499409186] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:42:55,773 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:42:55,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:42:55,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430319701] [2021-11-22 14:42:55,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:42:55,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:42:55,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:42:55,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:42:55,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:42:55,779 INFO L87 Difference]: Start difference. First operand 1300 states and 2270 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:42:55,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:42:55,916 INFO L93 Difference]: Finished difference Result 3506 states and 6126 transitions. [2021-11-22 14:42:55,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:42:55,917 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-11-22 14:42:55,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:42:55,937 INFO L225 Difference]: With dead ends: 3506 [2021-11-22 14:42:55,937 INFO L226 Difference]: Without dead ends: 2269 [2021-11-22 14:42:55,940 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 14:42:55,942 INFO L933 BasicCegarLoop]: 726 mSDtfsCounter, 694 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 694 SdHoareTripleChecker+Valid, 1448 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:42:55,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [694 Valid, 1448 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:42:55,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2269 states. [2021-11-22 14:42:56,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2269 to 1911. [2021-11-22 14:42:56,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1911 states, 1905 states have (on average 1.7721784776902887) internal successors, (3376), 1910 states have internal predecessors, (3376), 0 states have call successors, (0), 0 states 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 14:42:56,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1911 states to 1911 states and 3376 transitions. [2021-11-22 14:42:56,069 INFO L78 Accepts]: Start accepts. Automaton has 1911 states and 3376 transitions. Word has length 58 [2021-11-22 14:42:56,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:42:56,069 INFO L470 AbstractCegarLoop]: Abstraction has 1911 states and 3376 transitions. [2021-11-22 14:42:56,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:42:56,070 INFO L276 IsEmpty]: Start isEmpty. Operand 1911 states and 3376 transitions. [2021-11-22 14:42:56,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-22 14:42:56,075 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:42:56,076 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] [2021-11-22 14:42:56,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-22 14:42:56,077 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 14:42:56,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:42:56,077 INFO L85 PathProgramCache]: Analyzing trace with hash -75776197, now seen corresponding path program 1 times [2021-11-22 14:42:56,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:42:56,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582297975] [2021-11-22 14:42:56,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:42:56,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:42:56,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:42:56,177 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 14:42:56,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:42:56,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582297975] [2021-11-22 14:42:56,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582297975] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:42:56,179 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:42:56,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:42:56,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907117627] [2021-11-22 14:42:56,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:42:56,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:42:56,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:42:56,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:42:56,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:42:56,181 INFO L87 Difference]: Start difference. First operand 1911 states and 3376 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states 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 14:42:56,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:42:56,395 INFO L93 Difference]: Finished difference Result 5057 states and 8947 transitions. [2021-11-22 14:42:56,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:42:56,396 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2021-11-22 14:42:56,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:42:56,424 INFO L225 Difference]: With dead ends: 5057 [2021-11-22 14:42:56,425 INFO L226 Difference]: Without dead ends: 3257 [2021-11-22 14:42:56,429 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 14:42:56,430 INFO L933 BasicCegarLoop]: 726 mSDtfsCounter, 692 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 692 SdHoareTripleChecker+Valid, 1448 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:42:56,430 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [692 Valid, 1448 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:42:56,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3257 states. [2021-11-22 14:42:56,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3257 to 2899. [2021-11-22 14:42:56,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2899 states, 2893 states have (on average 1.7822329761493259) internal successors, (5156), 2898 states have internal predecessors, (5156), 0 states have call successors, (0), 0 states 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 14:42:56,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2899 states to 2899 states and 5156 transitions. [2021-11-22 14:42:56,624 INFO L78 Accepts]: Start accepts. Automaton has 2899 states and 5156 transitions. Word has length 59 [2021-11-22 14:42:56,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:42:56,624 INFO L470 AbstractCegarLoop]: Abstraction has 2899 states and 5156 transitions. [2021-11-22 14:42:56,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states 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 14:42:56,625 INFO L276 IsEmpty]: Start isEmpty. Operand 2899 states and 5156 transitions. [2021-11-22 14:42:56,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-22 14:42:56,632 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:42:56,633 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] [2021-11-22 14:42:56,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-22 14:42:56,633 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 14:42:56,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:42:56,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1784080835, now seen corresponding path program 1 times [2021-11-22 14:42:56,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:42:56,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420360706] [2021-11-22 14:42:56,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:42:56,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:42:56,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:42:56,714 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 14:42:56,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:42:56,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420360706] [2021-11-22 14:42:56,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420360706] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:42:56,715 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:42:56,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:42:56,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913365601] [2021-11-22 14:42:56,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:42:56,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:42:56,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:42:56,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:42:56,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:42:56,718 INFO L87 Difference]: Start difference. First operand 2899 states and 5156 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states 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 14:42:57,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:42:57,022 INFO L93 Difference]: Finished difference Result 7622 states and 13597 transitions. [2021-11-22 14:42:57,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:42:57,023 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2021-11-22 14:42:57,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:42:57,066 INFO L225 Difference]: With dead ends: 7622 [2021-11-22 14:42:57,066 INFO L226 Difference]: Without dead ends: 4914 [2021-11-22 14:42:57,072 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 14:42:57,075 INFO L933 BasicCegarLoop]: 726 mSDtfsCounter, 690 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 1448 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:42:57,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [690 Valid, 1448 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:42:57,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4914 states. [2021-11-22 14:42:57,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4914 to 4556. [2021-11-22 14:42:57,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4556 states, 4550 states have (on average 1.7874725274725274) internal successors, (8133), 4555 states have internal predecessors, (8133), 0 states have call successors, (0), 0 states 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 14:42:57,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4556 states to 4556 states and 8133 transitions. [2021-11-22 14:42:57,379 INFO L78 Accepts]: Start accepts. Automaton has 4556 states and 8133 transitions. Word has length 60 [2021-11-22 14:42:57,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:42:57,380 INFO L470 AbstractCegarLoop]: Abstraction has 4556 states and 8133 transitions. [2021-11-22 14:42:57,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states 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 14:42:57,381 INFO L276 IsEmpty]: Start isEmpty. Operand 4556 states and 8133 transitions. [2021-11-22 14:42:57,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-22 14:42:57,392 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:42:57,393 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] [2021-11-22 14:42:57,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-22 14:42:57,393 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 14:42:57,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:42:57,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1464170979, now seen corresponding path program 1 times [2021-11-22 14:42:57,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:42:57,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112492425] [2021-11-22 14:42:57,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:42:57,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:42:57,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:42:57,486 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 14:42:57,517 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:42:57,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112492425] [2021-11-22 14:42:57,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112492425] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:42:57,518 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:42:57,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:42:57,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688800525] [2021-11-22 14:42:57,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:42:57,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:42:57,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:42:57,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:42:57,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:42:57,520 INFO L87 Difference]: Start difference. First operand 4556 states and 8133 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:42:57,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:42:57,846 INFO L93 Difference]: Finished difference Result 11788 states and 21187 transitions. [2021-11-22 14:42:57,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:42:57,847 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-22 14:42:57,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:42:57,928 INFO L225 Difference]: With dead ends: 11788 [2021-11-22 14:42:57,929 INFO L226 Difference]: Without dead ends: 7623 [2021-11-22 14:42:57,939 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 14:42:57,940 INFO L933 BasicCegarLoop]: 726 mSDtfsCounter, 688 mSDsluCounter, 714 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 1440 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:42:57,941 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [688 Valid, 1440 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:42:57,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7623 states. [2021-11-22 14:42:58,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7623 to 7265. [2021-11-22 14:42:58,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7265 states, 7259 states have (on average 1.795013087202094) internal successors, (13030), 7264 states have internal predecessors, (13030), 0 states have call successors, (0), 0 states 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 14:42:58,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7265 states to 7265 states and 13030 transitions. [2021-11-22 14:42:58,436 INFO L78 Accepts]: Start accepts. Automaton has 7265 states and 13030 transitions. Word has length 61 [2021-11-22 14:42:58,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:42:58,436 INFO L470 AbstractCegarLoop]: Abstraction has 7265 states and 13030 transitions. [2021-11-22 14:42:58,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:42:58,437 INFO L276 IsEmpty]: Start isEmpty. Operand 7265 states and 13030 transitions. [2021-11-22 14:42:58,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-22 14:42:58,447 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:42:58,448 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] [2021-11-22 14:42:58,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-22 14:42:58,448 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 14:42:58,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:42:58,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1725545185, now seen corresponding path program 1 times [2021-11-22 14:42:58,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:42:58,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098082857] [2021-11-22 14:42:58,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:42:58,449 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:42:58,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:42:58,503 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 14:42:58,503 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:42:58,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098082857] [2021-11-22 14:42:58,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098082857] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:42:58,504 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:42:58,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:42:58,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733417376] [2021-11-22 14:42:58,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:42:58,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:42:58,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:42:58,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:42:58,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:42:58,506 INFO L87 Difference]: Start difference. First operand 7265 states and 13030 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states 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 14:42:59,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:42:59,151 INFO L93 Difference]: Finished difference Result 19461 states and 35100 transitions. [2021-11-22 14:42:59,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:42:59,152 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-11-22 14:42:59,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:42:59,201 INFO L225 Difference]: With dead ends: 19461 [2021-11-22 14:42:59,201 INFO L226 Difference]: Without dead ends: 12755 [2021-11-22 14:42:59,214 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 14:42:59,215 INFO L933 BasicCegarLoop]: 726 mSDtfsCounter, 686 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 686 SdHoareTripleChecker+Valid, 1448 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:42:59,215 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [686 Valid, 1448 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:42:59,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12755 states. [2021-11-22 14:42:59,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12755 to 12397. [2021-11-22 14:42:59,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12397 states, 12391 states have (on average 1.7959809539181664) internal successors, (22254), 12396 states have internal predecessors, (22254), 0 states have call successors, (0), 0 states 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 14:42:59,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12397 states to 12397 states and 22254 transitions. [2021-11-22 14:42:59,978 INFO L78 Accepts]: Start accepts. Automaton has 12397 states and 22254 transitions. Word has length 62 [2021-11-22 14:42:59,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:42:59,980 INFO L470 AbstractCegarLoop]: Abstraction has 12397 states and 22254 transitions. [2021-11-22 14:42:59,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states 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 14:42:59,981 INFO L276 IsEmpty]: Start isEmpty. Operand 12397 states and 22254 transitions. [2021-11-22 14:43:00,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-22 14:43:00,002 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:43:00,003 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] [2021-11-22 14:43:00,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-22 14:43:00,003 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 14:43:00,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:43:00,004 INFO L85 PathProgramCache]: Analyzing trace with hash -834663061, now seen corresponding path program 1 times [2021-11-22 14:43:00,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:43:00,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867398522] [2021-11-22 14:43:00,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:43:00,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:43:00,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:43:00,086 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 14:43:00,086 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:43:00,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867398522] [2021-11-22 14:43:00,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867398522] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:43:00,087 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:43:00,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:43:00,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284876814] [2021-11-22 14:43:00,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:43:00,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:43:00,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:43:00,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:43:00,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:43:00,089 INFO L87 Difference]: Start difference. First operand 12397 states and 22254 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states 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 14:43:00,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:43:00,826 INFO L93 Difference]: Finished difference Result 26674 states and 47537 transitions. [2021-11-22 14:43:00,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:43:00,827 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2021-11-22 14:43:00,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:43:00,887 INFO L225 Difference]: With dead ends: 26674 [2021-11-22 14:43:00,888 INFO L226 Difference]: Without dead ends: 16366 [2021-11-22 14:43:00,911 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 14:43:00,912 INFO L933 BasicCegarLoop]: 726 mSDtfsCounter, 684 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 684 SdHoareTripleChecker+Valid, 1365 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:43:00,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [684 Valid, 1365 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:43:00,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16366 states. [2021-11-22 14:43:01,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16366 to 16008. [2021-11-22 14:43:01,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16008 states, 16002 states have (on average 1.7608423947006624) internal successors, (28177), 16007 states have internal predecessors, (28177), 0 states have call successors, (0), 0 states 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 14:43:01,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16008 states to 16008 states and 28177 transitions. [2021-11-22 14:43:01,957 INFO L78 Accepts]: Start accepts. Automaton has 16008 states and 28177 transitions. Word has length 63 [2021-11-22 14:43:01,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:43:01,957 INFO L470 AbstractCegarLoop]: Abstraction has 16008 states and 28177 transitions. [2021-11-22 14:43:01,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states 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 14:43:01,958 INFO L276 IsEmpty]: Start isEmpty. Operand 16008 states and 28177 transitions. [2021-11-22 14:43:01,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-22 14:43:01,976 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:43:01,976 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:43:01,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-22 14:43:01,977 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 14:43:01,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:43:01,978 INFO L85 PathProgramCache]: Analyzing trace with hash 2118174028, now seen corresponding path program 2 times [2021-11-22 14:43:01,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:43:01,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695334593] [2021-11-22 14:43:01,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:43:01,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:43:02,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:43:02,065 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-22 14:43:02,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:43:02,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695334593] [2021-11-22 14:43:02,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695334593] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:43:02,066 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:43:02,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:43:02,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573674864] [2021-11-22 14:43:02,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:43:02,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:43:02,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:43:02,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:43:02,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:43:02,069 INFO L87 Difference]: Start difference. First operand 16008 states and 28177 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 14:43:02,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:43:02,903 INFO L93 Difference]: Finished difference Result 29810 states and 52520 transitions. [2021-11-22 14:43:02,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:43:02,904 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 64 [2021-11-22 14:43:02,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:43:02,968 INFO L225 Difference]: With dead ends: 29810 [2021-11-22 14:43:02,968 INFO L226 Difference]: Without dead ends: 16366 [2021-11-22 14:43:02,991 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 14:43:02,993 INFO L933 BasicCegarLoop]: 1424 mSDtfsCounter, 697 mSDsluCounter, 723 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 697 SdHoareTripleChecker+Valid, 2147 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:43:02,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [697 Valid, 2147 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:43:03,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16366 states. [2021-11-22 14:43:03,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16366 to 16008. [2021-11-22 14:43:03,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16008 states, 16002 states have (on average 1.75228096487939) internal successors, (28040), 16007 states have internal predecessors, (28040), 0 states have call successors, (0), 0 states 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 14:43:03,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16008 states to 16008 states and 28040 transitions. [2021-11-22 14:43:03,856 INFO L78 Accepts]: Start accepts. Automaton has 16008 states and 28040 transitions. Word has length 64 [2021-11-22 14:43:03,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:43:03,857 INFO L470 AbstractCegarLoop]: Abstraction has 16008 states and 28040 transitions. [2021-11-22 14:43:03,857 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 14:43:03,857 INFO L276 IsEmpty]: Start isEmpty. Operand 16008 states and 28040 transitions. [2021-11-22 14:43:03,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-22 14:43:03,872 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:43:03,872 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] [2021-11-22 14:43:03,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-22 14:43:03,873 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 14:43:03,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:43:03,876 INFO L85 PathProgramCache]: Analyzing trace with hash -2014891649, now seen corresponding path program 1 times [2021-11-22 14:43:03,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:43:03,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748052477] [2021-11-22 14:43:03,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:43:03,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:43:03,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:43:03,956 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 14:43:03,957 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:43:03,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748052477] [2021-11-22 14:43:03,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748052477] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:43:03,957 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:43:03,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:43:03,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418544614] [2021-11-22 14:43:03,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:43:03,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:43:03,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:43:03,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:43:03,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:43:03,961 INFO L87 Difference]: Start difference. First operand 16008 states and 28040 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:43:05,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:43:05,061 INFO L93 Difference]: Finished difference Result 42786 states and 75128 transitions. [2021-11-22 14:43:05,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:43:05,062 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-22 14:43:05,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:43:05,170 INFO L225 Difference]: With dead ends: 42786 [2021-11-22 14:43:05,170 INFO L226 Difference]: Without dead ends: 29190 [2021-11-22 14:43:05,197 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 14:43:05,198 INFO L933 BasicCegarLoop]: 726 mSDtfsCounter, 682 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 1448 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:43:05,198 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [682 Valid, 1448 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:43:05,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29190 states. [2021-11-22 14:43:06,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29190 to 28832. [2021-11-22 14:43:06,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28832 states, 28826 states have (on average 1.745334073405953) internal successors, (50311), 28831 states have internal predecessors, (50311), 0 states have call successors, (0), 0 states 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 14:43:06,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28832 states to 28832 states and 50311 transitions. [2021-11-22 14:43:06,747 INFO L78 Accepts]: Start accepts. Automaton has 28832 states and 50311 transitions. Word has length 64 [2021-11-22 14:43:06,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:43:06,748 INFO L470 AbstractCegarLoop]: Abstraction has 28832 states and 50311 transitions. [2021-11-22 14:43:06,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:43:06,748 INFO L276 IsEmpty]: Start isEmpty. Operand 28832 states and 50311 transitions. [2021-11-22 14:43:06,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-22 14:43:06,766 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:43:06,767 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] [2021-11-22 14:43:06,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-22 14:43:06,767 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 14:43:06,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:43:06,768 INFO L85 PathProgramCache]: Analyzing trace with hash 660114867, now seen corresponding path program 1 times [2021-11-22 14:43:06,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:43:06,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538371116] [2021-11-22 14:43:06,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:43:06,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:43:06,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:43:06,853 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 14:43:06,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:43:06,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538371116] [2021-11-22 14:43:06,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538371116] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:43:06,854 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:43:06,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:43:06,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514185010] [2021-11-22 14:43:06,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:43:06,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:43:06,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:43:06,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:43:06,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:43:06,861 INFO L87 Difference]: Start difference. First operand 28832 states and 50311 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states 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 14:43:08,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:43:08,470 INFO L93 Difference]: Finished difference Result 79553 states and 139045 transitions. [2021-11-22 14:43:08,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:43:08,471 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2021-11-22 14:43:08,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:43:08,867 INFO L225 Difference]: With dead ends: 79553 [2021-11-22 14:43:08,868 INFO L226 Difference]: Without dead ends: 53885 [2021-11-22 14:43:08,939 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 14:43:08,941 INFO L933 BasicCegarLoop]: 726 mSDtfsCounter, 680 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 1448 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:43:08,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [680 Valid, 1448 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:43:09,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53885 states. [2021-11-22 14:43:11,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53885 to 53527. [2021-11-22 14:43:11,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53527 states, 53521 states have (on average 1.7364772706040619) internal successors, (92938), 53526 states have internal predecessors, (92938), 0 states have call successors, (0), 0 states 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 14:43:11,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53527 states to 53527 states and 92938 transitions. [2021-11-22 14:43:11,476 INFO L78 Accepts]: Start accepts. Automaton has 53527 states and 92938 transitions. Word has length 65 [2021-11-22 14:43:11,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:43:11,477 INFO L470 AbstractCegarLoop]: Abstraction has 53527 states and 92938 transitions. [2021-11-22 14:43:11,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states 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 14:43:11,477 INFO L276 IsEmpty]: Start isEmpty. Operand 53527 states and 92938 transitions. [2021-11-22 14:43:11,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-22 14:43:11,501 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:43:11,502 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] [2021-11-22 14:43:11,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-22 14:43:11,502 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 14:43:11,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:43:11,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1057252131, now seen corresponding path program 1 times [2021-11-22 14:43:11,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:43:11,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475555112] [2021-11-22 14:43:11,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:43:11,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:43:11,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:43:11,585 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 14:43:11,585 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:43:11,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475555112] [2021-11-22 14:43:11,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475555112] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:43:11,586 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:43:11,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:43:11,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806771153] [2021-11-22 14:43:11,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:43:11,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:43:11,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:43:11,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:43:11,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:43:11,589 INFO L87 Difference]: Start difference. First operand 53527 states and 92938 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:43:14,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:43:14,921 INFO L93 Difference]: Finished difference Result 102299 states and 177543 transitions. [2021-11-22 14:43:14,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:43:14,922 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-22 14:43:14,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:43:15,230 INFO L225 Difference]: With dead ends: 102299 [2021-11-22 14:43:15,231 INFO L226 Difference]: Without dead ends: 101941 [2021-11-22 14:43:15,256 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 14:43:15,257 INFO L933 BasicCegarLoop]: 726 mSDtfsCounter, 678 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 1448 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:43:15,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [678 Valid, 1448 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:43:15,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101941 states. [2021-11-22 14:43:19,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101941 to 101583. [2021-11-22 14:43:19,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101583 states, 101577 states have (on average 1.7261683255067584) internal successors, (175339), 101582 states have internal predecessors, (175339), 0 states have call successors, (0), 0 states 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 14:43:19,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101583 states to 101583 states and 175339 transitions. [2021-11-22 14:43:19,814 INFO L78 Accepts]: Start accepts. Automaton has 101583 states and 175339 transitions. Word has length 66 [2021-11-22 14:43:19,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:43:19,814 INFO L470 AbstractCegarLoop]: Abstraction has 101583 states and 175339 transitions. [2021-11-22 14:43:19,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:43:19,815 INFO L276 IsEmpty]: Start isEmpty. Operand 101583 states and 175339 transitions. [2021-11-22 14:43:19,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-22 14:43:19,834 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:43:19,834 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] [2021-11-22 14:43:19,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-22 14:43:19,835 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 14:43:19,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:43:19,836 INFO L85 PathProgramCache]: Analyzing trace with hash 332560981, now seen corresponding path program 1 times [2021-11-22 14:43:19,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:43:19,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811906022] [2021-11-22 14:43:19,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:43:19,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:43:19,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:43:19,971 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 14:43:19,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:43:19,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811906022] [2021-11-22 14:43:19,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811906022] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:43:19,972 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:43:19,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-22 14:43:19,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980855682] [2021-11-22 14:43:19,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:43:19,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-22 14:43:19,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:43:19,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-22 14:43:19,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-22 14:43:19,975 INFO L87 Difference]: Start difference. First operand 101583 states and 175339 transitions. Second operand has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 14:43:26,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:43:26,787 INFO L93 Difference]: Finished difference Result 104343 states and 179549 transitions. [2021-11-22 14:43:26,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-22 14:43:26,787 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2021-11-22 14:43:26,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:43:27,069 INFO L225 Difference]: With dead ends: 104343 [2021-11-22 14:43:27,070 INFO L226 Difference]: Without dead ends: 104048 [2021-11-22 14:43:27,104 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=290, Invalid=766, Unknown=0, NotChecked=0, Total=1056 [2021-11-22 14:43:27,108 INFO L933 BasicCegarLoop]: 1683 mSDtfsCounter, 6349 mSDsluCounter, 9705 mSDsCounter, 0 mSdLazyCounter, 1072 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6349 SdHoareTripleChecker+Valid, 11388 SdHoareTripleChecker+Invalid, 1175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-22 14:43:27,110 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6349 Valid, 11388 Invalid, 1175 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [103 Valid, 1072 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-22 14:43:27,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104048 states. [2021-11-22 14:43:31,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104048 to 101886. [2021-11-22 14:43:31,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101886 states, 101880 states have (on average 1.7255398508048685) internal successors, (175798), 101885 states have internal predecessors, (175798), 0 states have call successors, (0), 0 states 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 14:43:32,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101886 states to 101886 states and 175798 transitions. [2021-11-22 14:43:32,055 INFO L78 Accepts]: Start accepts. Automaton has 101886 states and 175798 transitions. Word has length 67 [2021-11-22 14:43:32,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:43:32,056 INFO L470 AbstractCegarLoop]: Abstraction has 101886 states and 175798 transitions. [2021-11-22 14:43:32,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 14:43:32,056 INFO L276 IsEmpty]: Start isEmpty. Operand 101886 states and 175798 transitions. [2021-11-22 14:43:32,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-22 14:43:32,074 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:43:32,074 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] [2021-11-22 14:43:32,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-22 14:43:32,074 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 14:43:32,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:43:32,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1061000311, now seen corresponding path program 1 times [2021-11-22 14:43:32,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:43:32,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34911874] [2021-11-22 14:43:32,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:43:32,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:43:32,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:43:32,154 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 14:43:32,154 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:43:32,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34911874] [2021-11-22 14:43:32,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34911874] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:43:32,155 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:43:32,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 14:43:32,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886966263] [2021-11-22 14:43:32,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:43:32,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 14:43:32,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:43:32,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 14:43:32,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:43:32,158 INFO L87 Difference]: Start difference. First operand 101886 states and 175798 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states 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 14:43:38,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:43:38,948 INFO L93 Difference]: Finished difference Result 201595 states and 347734 transitions. [2021-11-22 14:43:38,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 14:43:38,949 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2021-11-22 14:43:38,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:43:39,763 INFO L225 Difference]: With dead ends: 201595 [2021-11-22 14:43:39,763 INFO L226 Difference]: Without dead ends: 201027 [2021-11-22 14:43:39,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-22 14:43:39,816 INFO L933 BasicCegarLoop]: 927 mSDtfsCounter, 2228 mSDsluCounter, 2090 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2228 SdHoareTripleChecker+Valid, 3017 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 14:43:39,819 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2228 Valid, 3017 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 14:43:39,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201027 states. [2021-11-22 14:43:48,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201027 to 199781. [2021-11-22 14:43:48,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199781 states, 199775 states have (on average 1.7264322362657991) internal successors, (344898), 199780 states have internal predecessors, (344898), 0 states have call successors, (0), 0 states 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 14:43:49,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199781 states to 199781 states and 344898 transitions. [2021-11-22 14:43:49,172 INFO L78 Accepts]: Start accepts. Automaton has 199781 states and 344898 transitions. Word has length 68 [2021-11-22 14:43:49,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:43:49,173 INFO L470 AbstractCegarLoop]: Abstraction has 199781 states and 344898 transitions. [2021-11-22 14:43:49,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states 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 14:43:49,173 INFO L276 IsEmpty]: Start isEmpty. Operand 199781 states and 344898 transitions. [2021-11-22 14:43:49,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-22 14:43:49,205 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:43:49,205 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] [2021-11-22 14:43:49,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-22 14:43:49,206 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-22 14:43:49,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:43:49,207 INFO L85 PathProgramCache]: Analyzing trace with hash 269709679, now seen corresponding path program 1 times [2021-11-22 14:43:49,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:43:49,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427912341] [2021-11-22 14:43:49,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:43:49,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:43:49,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:43:49,292 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 14:43:49,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:43:49,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427912341] [2021-11-22 14:43:49,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427912341] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:43:49,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:43:49,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-22 14:43:49,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436369892] [2021-11-22 14:43:49,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:43:49,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 14:43:49,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:43:49,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 14:43:49,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-22 14:43:49,296 INFO L87 Difference]: Start difference. First operand 199781 states and 344898 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)