./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru3.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru3.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 64bit --witnessprinter.graph.data.programhash 32c3d0de0693c88d7932ff8b6e02d1235a8aa90cfbd4ebc203b8adf917998be1 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 16:26:28,222 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 16:26:28,224 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 16:26:28,257 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 16:26:28,271 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 16:26:28,272 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 16:26:28,273 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 16:26:28,274 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 16:26:28,275 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 16:26:28,279 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 16:26:28,280 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 16:26:28,281 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 16:26:28,282 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 16:26:28,285 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 16:26:28,286 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 16:26:28,289 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 16:26:28,291 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 16:26:28,295 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 16:26:28,296 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 16:26:28,297 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 16:26:28,300 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 16:26:28,301 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 16:26:28,302 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 16:26:28,303 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 16:26:28,304 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 16:26:28,305 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 16:26:28,308 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 16:26:28,309 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 16:26:28,310 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 16:26:28,311 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 16:26:28,311 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 16:26:28,312 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 16:26:28,312 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 16:26:28,313 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 16:26:28,314 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 16:26:28,314 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 16:26:28,315 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 16:26:28,315 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 16:26:28,316 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 16:26:28,316 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 16:26:28,317 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 16:26:28,317 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 16:26:28,344 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 16:26:28,346 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 16:26:28,347 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 16:26:28,347 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 16:26:28,348 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 16:26:28,348 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 16:26:28,349 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 16:26:28,349 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 16:26:28,349 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 16:26:28,349 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 16:26:28,350 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 16:26:28,350 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 16:26:28,350 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 16:26:28,350 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 16:26:28,351 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 16:26:28,351 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 16:26:28,351 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 16:26:28,351 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 16:26:28,351 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 16:26:28,351 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 16:26:28,352 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 16:26:28,352 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 16:26:28,352 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 16:26:28,352 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 16:26:28,352 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 16:26:28,352 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 16:26:28,353 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 16:26:28,354 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 16:26:28,354 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 16:26:28,354 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 32c3d0de0693c88d7932ff8b6e02d1235a8aa90cfbd4ebc203b8adf917998be1 [2021-11-06 16:26:28,527 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 16:26:28,542 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 16:26:28,544 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 16:26:28,545 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 16:26:28,545 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 16:26:28,546 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru3.ko-entry_point.cil.out.i [2021-11-06 16:26:28,593 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37e1111dc/14fc1033d9844ace850e0e019c540bb1/FLAG56efbe89e [2021-11-06 16:26:29,122 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 16:26:29,124 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru3.ko-entry_point.cil.out.i [2021-11-06 16:26:29,152 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37e1111dc/14fc1033d9844ace850e0e019c540bb1/FLAG56efbe89e [2021-11-06 16:26:29,353 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37e1111dc/14fc1033d9844ace850e0e019c540bb1 [2021-11-06 16:26:29,359 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 16:26:29,361 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 16:26:29,364 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 16:26:29,364 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 16:26:29,366 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 16:26:29,367 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 04:26:29" (1/1) ... [2021-11-06 16:26:29,367 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18c1d6ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:26:29, skipping insertion in model container [2021-11-06 16:26:29,368 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 04:26:29" (1/1) ... [2021-11-06 16:26:29,373 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 16:26:29,442 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 16:26:30,198 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru3.ko-entry_point.cil.out.i[192198,192211] [2021-11-06 16:26:30,256 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 16:26:30,342 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 16:26:30,518 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru3.ko-entry_point.cil.out.i[192198,192211] [2021-11-06 16:26:30,535 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 16:26:30,671 INFO L208 MainTranslator]: Completed translation [2021-11-06 16:26:30,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:26:30 WrapperNode [2021-11-06 16:26:30,672 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 16:26:30,674 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 16:26:30,674 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 16:26:30,674 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 16:26:30,680 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:26:30" (1/1) ... [2021-11-06 16:26:30,804 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:26:30" (1/1) ... [2021-11-06 16:26:31,109 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 16:26:31,110 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 16:26:31,110 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 16:26:31,110 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 16:26:31,117 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:26:30" (1/1) ... [2021-11-06 16:26:31,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:26:30" (1/1) ... [2021-11-06 16:26:31,196 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:26:30" (1/1) ... [2021-11-06 16:26:31,196 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:26:30" (1/1) ... [2021-11-06 16:26:31,393 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:26:30" (1/1) ... [2021-11-06 16:26:31,417 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:26:30" (1/1) ... [2021-11-06 16:26:31,449 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:26:30" (1/1) ... [2021-11-06 16:26:31,497 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 16:26:31,499 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 16:26:31,499 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 16:26:31,499 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 16:26:31,500 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:26:30" (1/1) ... [2021-11-06 16:26:31,505 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 16:26:31,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 16:26:31,573 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-06 16:26:31,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-06 16:26:31,652 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 16:26:31,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 16:26:31,652 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 16:26:31,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 16:26:31,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 16:26:31,653 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 16:26:31,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 16:26:31,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 16:26:31,653 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-11-06 16:26:31,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 16:26:31,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 16:26:31,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 16:27:43,650 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 16:27:43,651 INFO L299 CfgBuilder]: Removed 1329 assume(true) statements. [2021-11-06 16:27:43,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 04:27:43 BoogieIcfgContainer [2021-11-06 16:27:43,655 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 16:27:43,657 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 16:27:43,657 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 16:27:43,660 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 16:27:43,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 04:26:29" (1/3) ... [2021-11-06 16:27:43,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@553feae8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 04:27:43, skipping insertion in model container [2021-11-06 16:27:43,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 04:26:30" (2/3) ... [2021-11-06 16:27:43,662 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@553feae8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 04:27:43, skipping insertion in model container [2021-11-06 16:27:43,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 04:27:43" (3/3) ... [2021-11-06 16:27:43,663 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru3.ko-entry_point.cil.out.i [2021-11-06 16:27:43,667 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 16:27:43,668 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-11-06 16:27:43,710 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 16:27:43,714 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 [2021-11-06 16:27:43,715 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-11-06 16:27:43,745 INFO L276 IsEmpty]: Start isEmpty. Operand has 1424 states, 1412 states have (on average 1.4121813031161472) internal successors, (1994), 1423 states have internal predecessors, (1994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:27:43,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-06 16:27:43,750 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:27:43,751 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:27:43,751 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 16:27:43,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:27:43,756 INFO L85 PathProgramCache]: Analyzing trace with hash 754127617, now seen corresponding path program 1 times [2021-11-06 16:27:43,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:27:43,762 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39700752] [2021-11-06 16:27:43,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:27:43,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:27:44,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:27:44,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:27:44,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:27:44,929 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39700752] [2021-11-06 16:27:44,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39700752] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:27:44,930 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:27:44,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 16:27:44,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490091696] [2021-11-06 16:27:44,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:27:44,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:27:44,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:27:44,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:27:44,953 INFO L87 Difference]: Start difference. First operand has 1424 states, 1412 states have (on average 1.4121813031161472) internal successors, (1994), 1423 states have internal predecessors, (1994), 0 states have call successors, (0), 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 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:27:45,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:27:45,904 INFO L93 Difference]: Finished difference Result 4138 states and 5781 transitions. [2021-11-06 16:27:45,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:27:45,905 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 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 13 [2021-11-06 16:27:45,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:27:45,935 INFO L225 Difference]: With dead ends: 4138 [2021-11-06 16:27:45,936 INFO L226 Difference]: Without dead ends: 2702 [2021-11-06 16:27:45,947 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:27:45,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2702 states. [2021-11-06 16:27:46,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2702 to 2686. [2021-11-06 16:27:46,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2686 states, 2675 states have (on average 1.3872897196261682) internal successors, (3711), 2685 states have internal predecessors, (3711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:27:46,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2686 states to 2686 states and 3711 transitions. [2021-11-06 16:27:46,063 INFO L78 Accepts]: Start accepts. Automaton has 2686 states and 3711 transitions. Word has length 13 [2021-11-06 16:27:46,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:27:46,064 INFO L470 AbstractCegarLoop]: Abstraction has 2686 states and 3711 transitions. [2021-11-06 16:27:46,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:27:46,064 INFO L276 IsEmpty]: Start isEmpty. Operand 2686 states and 3711 transitions. [2021-11-06 16:27:46,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-06 16:27:46,065 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:27:46,065 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:27:46,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 16:27:46,065 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 16:27:46,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:27:46,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1936008622, now seen corresponding path program 1 times [2021-11-06 16:27:46,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:27:46,066 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980772820] [2021-11-06 16:27:46,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:27:46,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:27:46,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:27:46,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:27:46,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:27:46,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980772820] [2021-11-06 16:27:46,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980772820] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:27:46,881 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:27:46,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 16:27:46,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929527481] [2021-11-06 16:27:46,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:27:46,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:27:46,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:27:46,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:27:46,883 INFO L87 Difference]: Start difference. First operand 2686 states and 3711 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:27:49,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:27:49,554 INFO L93 Difference]: Finished difference Result 7866 states and 10890 transitions. [2021-11-06 16:27:49,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:27:49,555 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-06 16:27:49,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:27:49,572 INFO L225 Difference]: With dead ends: 7866 [2021-11-06 16:27:49,573 INFO L226 Difference]: Without dead ends: 5183 [2021-11-06 16:27:49,579 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:27:49,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5183 states. [2021-11-06 16:27:49,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5183 to 5167. [2021-11-06 16:27:49,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5167 states, 5156 states have (on average 1.3902249806051203) internal successors, (7168), 5166 states have internal predecessors, (7168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:27:49,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5167 states to 5167 states and 7168 transitions. [2021-11-06 16:27:49,707 INFO L78 Accepts]: Start accepts. Automaton has 5167 states and 7168 transitions. Word has length 14 [2021-11-06 16:27:49,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:27:49,708 INFO L470 AbstractCegarLoop]: Abstraction has 5167 states and 7168 transitions. [2021-11-06 16:27:49,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:27:49,709 INFO L276 IsEmpty]: Start isEmpty. Operand 5167 states and 7168 transitions. [2021-11-06 16:27:49,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-06 16:27:49,713 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:27:49,713 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:27:49,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 16:27:49,714 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 16:27:49,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:27:49,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1032247073, now seen corresponding path program 1 times [2021-11-06 16:27:49,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:27:49,722 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603505294] [2021-11-06 16:27:49,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:27:49,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:27:50,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:27:50,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:27:50,665 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:27:50,665 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603505294] [2021-11-06 16:27:50,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603505294] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:27:50,666 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:27:50,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 16:27:50,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364746566] [2021-11-06 16:27:50,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 16:27:50,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:27:50,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 16:27:50,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-06 16:27:50,667 INFO L87 Difference]: Start difference. First operand 5167 states and 7168 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:27:52,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:27:52,438 INFO L93 Difference]: Finished difference Result 25673 states and 35628 transitions. [2021-11-06 16:27:52,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-06 16:27:52,439 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2021-11-06 16:27:52,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:27:52,527 INFO L225 Difference]: With dead ends: 25673 [2021-11-06 16:27:52,527 INFO L226 Difference]: Without dead ends: 20509 [2021-11-06 16:27:52,544 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-06 16:27:52,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20509 states. [2021-11-06 16:27:52,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20509 to 5217. [2021-11-06 16:27:52,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5217 states, 5206 states have (on average 1.3883980023050326) internal successors, (7228), 5216 states have internal predecessors, (7228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:27:52,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5217 states to 5217 states and 7228 transitions. [2021-11-06 16:27:52,813 INFO L78 Accepts]: Start accepts. Automaton has 5217 states and 7228 transitions. Word has length 22 [2021-11-06 16:27:52,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:27:52,813 INFO L470 AbstractCegarLoop]: Abstraction has 5217 states and 7228 transitions. [2021-11-06 16:27:52,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:27:52,813 INFO L276 IsEmpty]: Start isEmpty. Operand 5217 states and 7228 transitions. [2021-11-06 16:27:52,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-06 16:27:52,816 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:27:52,816 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:27:52,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 16:27:52,816 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 16:27:52,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:27:52,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1290412511, now seen corresponding path program 1 times [2021-11-06 16:27:52,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:27:52,818 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843251207] [2021-11-06 16:27:52,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:27:52,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:27:53,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:27:53,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:27:53,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:27:53,524 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843251207] [2021-11-06 16:27:53,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843251207] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:27:53,525 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:27:53,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 16:27:53,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176922812] [2021-11-06 16:27:53,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:27:53,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:27:53,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:27:53,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:27:53,526 INFO L87 Difference]: Start difference. First operand 5217 states and 7228 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:27:53,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:27:53,651 INFO L93 Difference]: Finished difference Result 5217 states and 7228 transitions. [2021-11-06 16:27:53,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:27:53,652 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2021-11-06 16:27:53,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:27:53,662 INFO L225 Difference]: With dead ends: 5217 [2021-11-06 16:27:53,662 INFO L226 Difference]: Without dead ends: 5215 [2021-11-06 16:27:53,665 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:27:53,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5215 states. [2021-11-06 16:27:53,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5215 to 5215. [2021-11-06 16:27:53,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5215 states, 5205 states have (on average 1.3882804995196927) internal successors, (7226), 5214 states have internal predecessors, (7226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:27:53,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5215 states to 5215 states and 7226 transitions. [2021-11-06 16:27:53,794 INFO L78 Accepts]: Start accepts. Automaton has 5215 states and 7226 transitions. Word has length 22 [2021-11-06 16:27:53,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:27:53,795 INFO L470 AbstractCegarLoop]: Abstraction has 5215 states and 7226 transitions. [2021-11-06 16:27:53,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:27:53,796 INFO L276 IsEmpty]: Start isEmpty. Operand 5215 states and 7226 transitions. [2021-11-06 16:27:53,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-06 16:27:53,796 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:27:53,796 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:27:53,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 16:27:53,797 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 16:27:53,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:27:53,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1348092953, now seen corresponding path program 1 times [2021-11-06 16:27:53,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:27:53,798 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854093730] [2021-11-06 16:27:53,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:27:53,799 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:27:54,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:27:54,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:27:54,460 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:27:54,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854093730] [2021-11-06 16:27:54,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854093730] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:27:54,461 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:27:54,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 16:27:54,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126206994] [2021-11-06 16:27:54,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:27:54,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:27:54,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:27:54,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:27:54,462 INFO L87 Difference]: Start difference. First operand 5215 states and 7226 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:27:54,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:27:54,543 INFO L93 Difference]: Finished difference Result 5215 states and 7226 transitions. [2021-11-06 16:27:54,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:27:54,544 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-06 16:27:54,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:27:54,554 INFO L225 Difference]: With dead ends: 5215 [2021-11-06 16:27:54,555 INFO L226 Difference]: Without dead ends: 5213 [2021-11-06 16:27:54,558 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:27:54,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5213 states. [2021-11-06 16:27:54,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5213 to 5213. [2021-11-06 16:27:54,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5213 states, 5204 states have (on average 1.388162951575711) internal successors, (7224), 5212 states have internal predecessors, (7224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:27:54,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5213 states to 5213 states and 7224 transitions. [2021-11-06 16:27:54,762 INFO L78 Accepts]: Start accepts. Automaton has 5213 states and 7224 transitions. Word has length 23 [2021-11-06 16:27:54,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:27:54,762 INFO L470 AbstractCegarLoop]: Abstraction has 5213 states and 7224 transitions. [2021-11-06 16:27:54,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:27:54,763 INFO L276 IsEmpty]: Start isEmpty. Operand 5213 states and 7224 transitions. [2021-11-06 16:27:54,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-06 16:27:54,763 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:27:54,763 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:27:54,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 16:27:54,764 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 16:27:54,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:27:54,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1158780631, now seen corresponding path program 1 times [2021-11-06 16:27:54,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:27:54,765 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902613158] [2021-11-06 16:27:54,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:27:54,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:27:55,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:27:55,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:27:55,421 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:27:55,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902613158] [2021-11-06 16:27:55,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902613158] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:27:55,421 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:27:55,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 16:27:55,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667706535] [2021-11-06 16:27:55,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:27:55,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:27:55,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:27:55,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:27:55,425 INFO L87 Difference]: Start difference. First operand 5213 states and 7224 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:27:55,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:27:55,722 INFO L93 Difference]: Finished difference Result 11833 states and 16404 transitions. [2021-11-06 16:27:55,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:27:55,722 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-06 16:27:55,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:27:55,738 INFO L225 Difference]: With dead ends: 11833 [2021-11-06 16:27:55,738 INFO L226 Difference]: Without dead ends: 6617 [2021-11-06 16:27:55,747 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:27:55,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6617 states. [2021-11-06 16:27:55,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6617 to 6605. [2021-11-06 16:27:55,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6605 states, 6596 states have (on average 1.3869011522134627) internal successors, (9148), 6604 states have internal predecessors, (9148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:27:55,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6605 states to 6605 states and 9148 transitions. [2021-11-06 16:27:55,910 INFO L78 Accepts]: Start accepts. Automaton has 6605 states and 9148 transitions. Word has length 24 [2021-11-06 16:27:55,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:27:55,910 INFO L470 AbstractCegarLoop]: Abstraction has 6605 states and 9148 transitions. [2021-11-06 16:27:55,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:27:55,910 INFO L276 IsEmpty]: Start isEmpty. Operand 6605 states and 9148 transitions. [2021-11-06 16:27:55,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-06 16:27:55,911 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:27:55,912 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:27:55,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 16:27:55,912 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 16:27:55,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:27:55,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1100373169, now seen corresponding path program 1 times [2021-11-06 16:27:55,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:27:55,913 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870140968] [2021-11-06 16:27:55,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:27:55,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:27:56,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:27:56,573 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:27:56,573 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:27:56,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870140968] [2021-11-06 16:27:56,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870140968] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:27:56,573 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:27:56,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 16:27:56,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372903817] [2021-11-06 16:27:56,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:27:56,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:27:56,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:27:56,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:27:56,574 INFO L87 Difference]: Start difference. First operand 6605 states and 9148 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:27:59,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:27:59,690 INFO L93 Difference]: Finished difference Result 16483 states and 22886 transitions. [2021-11-06 16:27:59,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:27:59,690 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-11-06 16:27:59,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:27:59,713 INFO L225 Difference]: With dead ends: 16483 [2021-11-06 16:27:59,714 INFO L226 Difference]: Without dead ends: 9881 [2021-11-06 16:27:59,727 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:27:59,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9881 states. [2021-11-06 16:27:59,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9881 to 9869. [2021-11-06 16:27:59,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9869 states, 9860 states have (on average 1.3841784989858013) internal successors, (13648), 9868 states have internal predecessors, (13648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:27:59,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9869 states to 9869 states and 13648 transitions. [2021-11-06 16:27:59,959 INFO L78 Accepts]: Start accepts. Automaton has 9869 states and 13648 transitions. Word has length 35 [2021-11-06 16:27:59,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:27:59,961 INFO L470 AbstractCegarLoop]: Abstraction has 9869 states and 13648 transitions. [2021-11-06 16:27:59,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:27:59,962 INFO L276 IsEmpty]: Start isEmpty. Operand 9869 states and 13648 transitions. [2021-11-06 16:27:59,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-06 16:27:59,965 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:27:59,965 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:27:59,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 16:27:59,965 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 16:27:59,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:27:59,966 INFO L85 PathProgramCache]: Analyzing trace with hash 491641491, now seen corresponding path program 1 times [2021-11-06 16:27:59,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:27:59,966 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654701929] [2021-11-06 16:27:59,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:27:59,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:28:00,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:28:00,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:28:00,572 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:28:00,572 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654701929] [2021-11-06 16:28:00,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654701929] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:28:00,572 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:28:00,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 16:28:00,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231189168] [2021-11-06 16:28:00,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:28:00,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:28:00,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:28:00,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:28:00,573 INFO L87 Difference]: Start difference. First operand 9869 states and 13648 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) [2021-11-06 16:28:01,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:28:01,191 INFO L93 Difference]: Finished difference Result 21004 states and 29115 transitions. [2021-11-06 16:28:01,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:28:01,192 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 [2021-11-06 16:28:01,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:28:01,212 INFO L225 Difference]: With dead ends: 21004 [2021-11-06 16:28:01,213 INFO L226 Difference]: Without dead ends: 11138 [2021-11-06 16:28:01,230 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:28:01,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11138 states. [2021-11-06 16:28:01,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11138 to 11101. [2021-11-06 16:28:01,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11101 states, 11092 states have (on average 1.3909123692751533) internal successors, (15428), 11100 states have internal predecessors, (15428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:28:01,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11101 states to 11101 states and 15428 transitions. [2021-11-06 16:28:01,481 INFO L78 Accepts]: Start accepts. Automaton has 11101 states and 15428 transitions. Word has length 42 [2021-11-06 16:28:01,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:28:01,481 INFO L470 AbstractCegarLoop]: Abstraction has 11101 states and 15428 transitions. [2021-11-06 16:28:01,481 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) [2021-11-06 16:28:01,481 INFO L276 IsEmpty]: Start isEmpty. Operand 11101 states and 15428 transitions. [2021-11-06 16:28:01,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-06 16:28:01,483 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:28:01,483 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:28:01,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 16:28:01,483 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 16:28:01,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:28:01,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1019502293, now seen corresponding path program 1 times [2021-11-06 16:28:01,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:28:01,484 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104604321] [2021-11-06 16:28:01,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:28:01,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:28:01,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:28:02,194 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 16:28:02,194 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:28:02,194 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104604321] [2021-11-06 16:28:02,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104604321] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:28:02,195 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:28:02,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 16:28:02,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488596395] [2021-11-06 16:28:02,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:28:02,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:28:02,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:28:02,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:28:02,196 INFO L87 Difference]: Start difference. First operand 11101 states and 15428 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:28:05,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:28:05,457 INFO L93 Difference]: Finished difference Result 25871 states and 36082 transitions. [2021-11-06 16:28:05,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:28:05,458 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 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 [2021-11-06 16:28:05,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:28:05,489 INFO L225 Difference]: With dead ends: 25871 [2021-11-06 16:28:05,489 INFO L226 Difference]: Without dead ends: 14773 [2021-11-06 16:28:05,510 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:28:05,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14773 states. [2021-11-06 16:28:05,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14773 to 14761. [2021-11-06 16:28:05,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14761 states, 14752 states have (on average 1.3882863340563991) internal successors, (20480), 14760 states have internal predecessors, (20480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:28:05,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14761 states to 14761 states and 20480 transitions. [2021-11-06 16:28:05,928 INFO L78 Accepts]: Start accepts. Automaton has 14761 states and 20480 transitions. Word has length 56 [2021-11-06 16:28:05,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:28:05,928 INFO L470 AbstractCegarLoop]: Abstraction has 14761 states and 20480 transitions. [2021-11-06 16:28:05,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:28:05,929 INFO L276 IsEmpty]: Start isEmpty. Operand 14761 states and 20480 transitions. [2021-11-06 16:28:05,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-06 16:28:05,932 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:28:05,932 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:28:05,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 16:28:05,933 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 16:28:05,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:28:05,933 INFO L85 PathProgramCache]: Analyzing trace with hash 606612250, now seen corresponding path program 1 times [2021-11-06 16:28:05,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:28:05,933 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310751829] [2021-11-06 16:28:05,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:28:05,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:28:06,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:28:06,628 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 16:28:06,629 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:28:06,629 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310751829] [2021-11-06 16:28:06,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310751829] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:28:06,629 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:28:06,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 16:28:06,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458036359] [2021-11-06 16:28:06,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:28:06,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:28:06,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:28:06,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:28:06,630 INFO L87 Difference]: Start difference. First operand 14761 states and 20480 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:28:07,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:28:07,165 INFO L93 Difference]: Finished difference Result 22959 states and 31781 transitions. [2021-11-06 16:28:07,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:28:07,165 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2021-11-06 16:28:07,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:28:07,180 INFO L225 Difference]: With dead ends: 22959 [2021-11-06 16:28:07,180 INFO L226 Difference]: Without dead ends: 8201 [2021-11-06 16:28:07,199 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:28:07,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8201 states. [2021-11-06 16:28:07,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8201 to 7032. [2021-11-06 16:28:07,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7032 states, 7023 states have (on average 1.3948455076178272) internal successors, (9796), 7031 states have internal predecessors, (9796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:28:07,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7032 states to 7032 states and 9796 transitions. [2021-11-06 16:28:07,342 INFO L78 Accepts]: Start accepts. Automaton has 7032 states and 9796 transitions. Word has length 71 [2021-11-06 16:28:07,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:28:07,342 INFO L470 AbstractCegarLoop]: Abstraction has 7032 states and 9796 transitions. [2021-11-06 16:28:07,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:28:07,342 INFO L276 IsEmpty]: Start isEmpty. Operand 7032 states and 9796 transitions. [2021-11-06 16:28:07,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-06 16:28:07,344 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:28:07,344 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:28:07,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-06 16:28:07,345 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 16:28:07,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:28:07,345 INFO L85 PathProgramCache]: Analyzing trace with hash 2036984032, now seen corresponding path program 1 times [2021-11-06 16:28:07,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:28:07,346 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532242114] [2021-11-06 16:28:07,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:28:07,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:28:07,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:28:08,186 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-06 16:28:08,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:28:08,187 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532242114] [2021-11-06 16:28:08,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532242114] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:28:08,187 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:28:08,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 16:28:08,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273015322] [2021-11-06 16:28:08,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 16:28:08,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:28:08,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 16:28:08,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 16:28:08,188 INFO L87 Difference]: Start difference. First operand 7032 states and 9796 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 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) [2021-11-06 16:28:09,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:28:09,975 INFO L93 Difference]: Finished difference Result 25642 states and 35557 transitions. [2021-11-06 16:28:09,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 16:28:09,976 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 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 72 [2021-11-06 16:28:09,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:28:10,013 INFO L225 Difference]: With dead ends: 25642 [2021-11-06 16:28:10,014 INFO L226 Difference]: Without dead ends: 18628 [2021-11-06 16:28:10,032 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-06 16:28:10,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18628 states. [2021-11-06 16:28:10,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18628 to 8668. [2021-11-06 16:28:10,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8668 states, 8659 states have (on average 1.4039727451206836) internal successors, (12157), 8667 states have internal predecessors, (12157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:28:10,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8668 states to 8668 states and 12157 transitions. [2021-11-06 16:28:10,395 INFO L78 Accepts]: Start accepts. Automaton has 8668 states and 12157 transitions. Word has length 72 [2021-11-06 16:28:10,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:28:10,396 INFO L470 AbstractCegarLoop]: Abstraction has 8668 states and 12157 transitions. [2021-11-06 16:28:10,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 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) [2021-11-06 16:28:10,397 INFO L276 IsEmpty]: Start isEmpty. Operand 8668 states and 12157 transitions. [2021-11-06 16:28:10,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-06 16:28:10,398 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:28:10,398 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:28:10,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-06 16:28:10,399 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 16:28:10,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:28:10,399 INFO L85 PathProgramCache]: Analyzing trace with hash -272132865, now seen corresponding path program 1 times [2021-11-06 16:28:10,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:28:10,400 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434968709] [2021-11-06 16:28:10,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:28:10,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:28:10,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:28:11,059 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-06 16:28:11,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:28:11,059 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434968709] [2021-11-06 16:28:11,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434968709] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:28:11,059 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:28:11,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 16:28:11,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030234132] [2021-11-06 16:28:11,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:28:11,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:28:11,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:28:11,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:28:11,061 INFO L87 Difference]: Start difference. First operand 8668 states and 12157 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) [2021-11-06 16:28:14,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:28:14,250 INFO L93 Difference]: Finished difference Result 19354 states and 27157 transitions. [2021-11-06 16:28:14,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:28:14,251 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 73 [2021-11-06 16:28:14,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:28:14,269 INFO L225 Difference]: With dead ends: 19354 [2021-11-06 16:28:14,269 INFO L226 Difference]: Without dead ends: 10704 [2021-11-06 16:28:14,281 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:28:14,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10704 states. [2021-11-06 16:28:14,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10704 to 10304. [2021-11-06 16:28:14,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10304 states, 10295 states have (on average 1.4024283632831471) internal successors, (14438), 10303 states have internal predecessors, (14438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:28:14,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10304 states to 10304 states and 14438 transitions. [2021-11-06 16:28:14,655 INFO L78 Accepts]: Start accepts. Automaton has 10304 states and 14438 transitions. Word has length 73 [2021-11-06 16:28:14,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:28:14,655 INFO L470 AbstractCegarLoop]: Abstraction has 10304 states and 14438 transitions. [2021-11-06 16:28:14,655 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) [2021-11-06 16:28:14,656 INFO L276 IsEmpty]: Start isEmpty. Operand 10304 states and 14438 transitions. [2021-11-06 16:28:14,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-06 16:28:14,657 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:28:14,657 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:28:14,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-06 16:28:14,658 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 16:28:14,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:28:14,658 INFO L85 PathProgramCache]: Analyzing trace with hash -698320662, now seen corresponding path program 1 times [2021-11-06 16:28:14,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:28:14,659 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333916771] [2021-11-06 16:28:14,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:28:14,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:28:14,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:28:15,271 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-06 16:28:15,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:28:15,271 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333916771] [2021-11-06 16:28:15,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333916771] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:28:15,272 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:28:15,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 16:28:15,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761663742] [2021-11-06 16:28:15,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:28:15,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:28:15,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:28:15,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:28:15,273 INFO L87 Difference]: Start difference. First operand 10304 states and 14438 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) [2021-11-06 16:28:18,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:28:18,438 INFO L93 Difference]: Finished difference Result 22626 states and 31719 transitions. [2021-11-06 16:28:18,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:28:18,438 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 74 [2021-11-06 16:28:18,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:28:18,459 INFO L225 Difference]: With dead ends: 22626 [2021-11-06 16:28:18,459 INFO L226 Difference]: Without dead ends: 12340 [2021-11-06 16:28:18,479 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:28:18,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12340 states. [2021-11-06 16:28:18,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12340 to 11940. [2021-11-06 16:28:18,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11940 states, 11931 states have (on average 1.4013075182298216) internal successors, (16719), 11939 states have internal predecessors, (16719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:28:18,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11940 states to 11940 states and 16719 transitions. [2021-11-06 16:28:18,898 INFO L78 Accepts]: Start accepts. Automaton has 11940 states and 16719 transitions. Word has length 74 [2021-11-06 16:28:18,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:28:18,899 INFO L470 AbstractCegarLoop]: Abstraction has 11940 states and 16719 transitions. [2021-11-06 16:28:18,899 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) [2021-11-06 16:28:18,899 INFO L276 IsEmpty]: Start isEmpty. Operand 11940 states and 16719 transitions. [2021-11-06 16:28:18,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-06 16:28:18,901 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:28:18,901 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:28:18,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-06 16:28:18,902 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 16:28:18,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:28:18,902 INFO L85 PathProgramCache]: Analyzing trace with hash 572881383, now seen corresponding path program 1 times [2021-11-06 16:28:18,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:28:18,903 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784810858] [2021-11-06 16:28:18,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:28:18,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:28:19,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:28:19,575 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-06 16:28:19,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:28:19,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784810858] [2021-11-06 16:28:19,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784810858] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:28:19,575 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:28:19,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 16:28:19,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752731819] [2021-11-06 16:28:19,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 16:28:19,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:28:19,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 16:28:19,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 16:28:19,576 INFO L87 Difference]: Start difference. First operand 11940 states and 16719 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 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) [2021-11-06 16:28:20,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:28:20,365 INFO L93 Difference]: Finished difference Result 26638 states and 37251 transitions. [2021-11-06 16:28:20,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 16:28:20,366 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 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 74 [2021-11-06 16:28:20,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:28:20,390 INFO L225 Difference]: With dead ends: 26638 [2021-11-06 16:28:20,390 INFO L226 Difference]: Without dead ends: 14716 [2021-11-06 16:28:20,406 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 16:28:20,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14716 states. [2021-11-06 16:28:20,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14716 to 11940. [2021-11-06 16:28:20,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11940 states, 11931 states have (on average 1.4011398876875367) internal successors, (16717), 11939 states have internal predecessors, (16717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:28:20,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11940 states to 11940 states and 16717 transitions. [2021-11-06 16:28:20,796 INFO L78 Accepts]: Start accepts. Automaton has 11940 states and 16717 transitions. Word has length 74 [2021-11-06 16:28:20,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:28:20,796 INFO L470 AbstractCegarLoop]: Abstraction has 11940 states and 16717 transitions. [2021-11-06 16:28:20,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 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) [2021-11-06 16:28:20,796 INFO L276 IsEmpty]: Start isEmpty. Operand 11940 states and 16717 transitions. [2021-11-06 16:28:20,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-06 16:28:20,798 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:28:20,798 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:28:20,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-06 16:28:20,798 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 16:28:20,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:28:20,799 INFO L85 PathProgramCache]: Analyzing trace with hash 245961564, now seen corresponding path program 1 times [2021-11-06 16:28:20,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:28:20,799 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889373679] [2021-11-06 16:28:20,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:28:20,799 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:28:21,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:28:21,397 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-06 16:28:21,397 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:28:21,397 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889373679] [2021-11-06 16:28:21,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889373679] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:28:21,398 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:28:21,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 16:28:21,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953535909] [2021-11-06 16:28:21,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 16:28:21,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:28:21,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 16:28:21,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 16:28:21,399 INFO L87 Difference]: Start difference. First operand 11940 states and 16717 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 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) [2021-11-06 16:28:22,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:28:22,286 INFO L93 Difference]: Finished difference Result 26638 states and 37247 transitions. [2021-11-06 16:28:22,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 16:28:22,287 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 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 75 [2021-11-06 16:28:22,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:28:22,309 INFO L225 Difference]: With dead ends: 26638 [2021-11-06 16:28:22,309 INFO L226 Difference]: Without dead ends: 14716 [2021-11-06 16:28:22,321 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 16:28:22,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14716 states. [2021-11-06 16:28:22,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14716 to 11940. [2021-11-06 16:28:22,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11940 states, 11931 states have (on average 1.4009722571452519) internal successors, (16715), 11939 states have internal predecessors, (16715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:28:22,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11940 states to 11940 states and 16715 transitions. [2021-11-06 16:28:22,639 INFO L78 Accepts]: Start accepts. Automaton has 11940 states and 16715 transitions. Word has length 75 [2021-11-06 16:28:22,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:28:22,639 INFO L470 AbstractCegarLoop]: Abstraction has 11940 states and 16715 transitions. [2021-11-06 16:28:22,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 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) [2021-11-06 16:28:22,639 INFO L276 IsEmpty]: Start isEmpty. Operand 11940 states and 16715 transitions. [2021-11-06 16:28:22,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-06 16:28:22,641 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:28:22,641 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:28:22,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-06 16:28:22,641 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 16:28:22,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:28:22,642 INFO L85 PathProgramCache]: Analyzing trace with hash -544147174, now seen corresponding path program 1 times [2021-11-06 16:28:22,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:28:22,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282323010] [2021-11-06 16:28:22,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:28:22,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:28:22,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:28:23,228 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-06 16:28:23,228 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:28:23,228 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282323010] [2021-11-06 16:28:23,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282323010] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:28:23,228 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:28:23,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 16:28:23,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088578774] [2021-11-06 16:28:23,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:28:23,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:28:23,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:28:23,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:28:23,230 INFO L87 Difference]: Start difference. First operand 11940 states and 16715 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) [2021-11-06 16:28:26,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:28:26,645 INFO L93 Difference]: Finished difference Result 25898 states and 36273 transitions. [2021-11-06 16:28:26,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:28:26,646 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 75 [2021-11-06 16:28:26,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:28:26,668 INFO L225 Difference]: With dead ends: 25898 [2021-11-06 16:28:26,668 INFO L226 Difference]: Without dead ends: 13976 [2021-11-06 16:28:26,681 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:28:26,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13976 states. [2021-11-06 16:28:26,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13976 to 13576. [2021-11-06 16:28:27,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13576 states, 13567 states have (on average 1.4001621581779318) internal successors, (18996), 13575 states have internal predecessors, (18996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:28:27,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13576 states to 13576 states and 18996 transitions. [2021-11-06 16:28:27,035 INFO L78 Accepts]: Start accepts. Automaton has 13576 states and 18996 transitions. Word has length 75 [2021-11-06 16:28:27,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:28:27,035 INFO L470 AbstractCegarLoop]: Abstraction has 13576 states and 18996 transitions. [2021-11-06 16:28:27,035 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) [2021-11-06 16:28:27,035 INFO L276 IsEmpty]: Start isEmpty. Operand 13576 states and 18996 transitions. [2021-11-06 16:28:27,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-06 16:28:27,037 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:28:27,037 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:28:27,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-06 16:28:27,037 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 16:28:27,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:28:27,038 INFO L85 PathProgramCache]: Analyzing trace with hash 173357725, now seen corresponding path program 1 times [2021-11-06 16:28:27,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:28:27,038 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250234541] [2021-11-06 16:28:27,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:28:27,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:28:27,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:28:27,667 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 16:28:27,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:28:27,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250234541] [2021-11-06 16:28:27,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250234541] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 16:28:27,668 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062828955] [2021-11-06 16:28:27,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:28:27,668 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 16:28:27,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 16:28:27,669 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 16:28:27,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-06 16:28:30,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:28:31,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 13227 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-06 16:28:31,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 16:28:32,086 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-06 16:28:32,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062828955] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:28:32,086 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 16:28:32,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2021-11-06 16:28:32,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355785798] [2021-11-06 16:28:32,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 16:28:32,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:28:32,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 16:28:32,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-06 16:28:32,087 INFO L87 Difference]: Start difference. First operand 13576 states and 18996 transitions. Second operand has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 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) [2021-11-06 16:28:37,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:28:37,294 INFO L93 Difference]: Finished difference Result 40533 states and 56744 transitions. [2021-11-06 16:28:37,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-06 16:28:37,294 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 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 75 [2021-11-06 16:28:37,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:28:37,349 INFO L225 Difference]: With dead ends: 40533 [2021-11-06 16:28:37,349 INFO L226 Difference]: Without dead ends: 26967 [2021-11-06 16:28:37,369 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-11-06 16:28:37,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26967 states. [2021-11-06 16:28:37,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26967 to 13580. [2021-11-06 16:28:37,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13580 states, 13571 states have (on average 1.3996020926976642) internal successors, (18994), 13579 states have internal predecessors, (18994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:28:37,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13580 states to 13580 states and 18994 transitions. [2021-11-06 16:28:37,855 INFO L78 Accepts]: Start accepts. Automaton has 13580 states and 18994 transitions. Word has length 75 [2021-11-06 16:28:37,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:28:37,855 INFO L470 AbstractCegarLoop]: Abstraction has 13580 states and 18994 transitions. [2021-11-06 16:28:37,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 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) [2021-11-06 16:28:37,855 INFO L276 IsEmpty]: Start isEmpty. Operand 13580 states and 18994 transitions. [2021-11-06 16:28:37,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-06 16:28:37,857 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:28:37,857 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:28:37,902 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-06 16:28:38,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-06 16:28:38,075 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 16:28:38,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:28:38,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1583219236, now seen corresponding path program 1 times [2021-11-06 16:28:38,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:28:38,076 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001371843] [2021-11-06 16:28:38,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:28:38,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:28:38,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:28:38,760 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-06 16:28:38,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:28:38,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001371843] [2021-11-06 16:28:38,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001371843] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:28:38,761 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:28:38,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 16:28:38,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007466642] [2021-11-06 16:28:38,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:28:38,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:28:38,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:28:38,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:28:38,762 INFO L87 Difference]: Start difference. First operand 13580 states and 18994 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:28:39,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:28:39,164 INFO L93 Difference]: Finished difference Result 27150 states and 37981 transitions. [2021-11-06 16:28:39,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:28:39,165 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 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 86 [2021-11-06 16:28:39,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:28:39,188 INFO L225 Difference]: With dead ends: 27150 [2021-11-06 16:28:39,188 INFO L226 Difference]: Without dead ends: 13588 [2021-11-06 16:28:39,204 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:28:39,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13588 states. [2021-11-06 16:28:39,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13588 to 13588. [2021-11-06 16:28:39,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13588 states, 13579 states have (on average 1.3993666691214375) internal successors, (19002), 13587 states have internal predecessors, (19002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:28:39,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13588 states to 13588 states and 19002 transitions. [2021-11-06 16:28:39,614 INFO L78 Accepts]: Start accepts. Automaton has 13588 states and 19002 transitions. Word has length 86 [2021-11-06 16:28:39,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:28:39,614 INFO L470 AbstractCegarLoop]: Abstraction has 13588 states and 19002 transitions. [2021-11-06 16:28:39,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:28:39,614 INFO L276 IsEmpty]: Start isEmpty. Operand 13588 states and 19002 transitions. [2021-11-06 16:28:39,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-06 16:28:39,616 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:28:39,616 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:28:39,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-06 16:28:39,619 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 16:28:39,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:28:39,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1581372194, now seen corresponding path program 1 times [2021-11-06 16:28:39,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:28:39,620 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195119572] [2021-11-06 16:28:39,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:28:39,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:28:39,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:28:40,332 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-06 16:28:40,333 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:28:40,333 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195119572] [2021-11-06 16:28:40,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195119572] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:28:40,333 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:28:40,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 16:28:40,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224960630] [2021-11-06 16:28:40,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:28:40,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:28:40,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:28:40,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:28:40,334 INFO L87 Difference]: Start difference. First operand 13588 states and 19002 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:28:43,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:28:43,248 INFO L93 Difference]: Finished difference Result 27156 states and 37980 transitions. [2021-11-06 16:28:43,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:28:43,248 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 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 86 [2021-11-06 16:28:43,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:28:43,272 INFO L225 Difference]: With dead ends: 27156 [2021-11-06 16:28:43,272 INFO L226 Difference]: Without dead ends: 13586 [2021-11-06 16:28:43,287 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:28:43,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13586 states. [2021-11-06 16:28:43,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13586 to 13563. [2021-11-06 16:28:43,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13563 states, 13555 states have (on average 1.3980081150866839) internal successors, (18950), 13562 states have internal predecessors, (18950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:28:43,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13563 states to 13563 states and 18950 transitions. [2021-11-06 16:28:43,704 INFO L78 Accepts]: Start accepts. Automaton has 13563 states and 18950 transitions. Word has length 86 [2021-11-06 16:28:43,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:28:43,704 INFO L470 AbstractCegarLoop]: Abstraction has 13563 states and 18950 transitions. [2021-11-06 16:28:43,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:28:43,704 INFO L276 IsEmpty]: Start isEmpty. Operand 13563 states and 18950 transitions. [2021-11-06 16:28:43,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-06 16:28:43,706 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:28:43,706 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:28:43,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-06 16:28:43,707 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 16:28:43,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:28:43,707 INFO L85 PathProgramCache]: Analyzing trace with hash -678988661, now seen corresponding path program 1 times [2021-11-06 16:28:43,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:28:43,707 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021458422] [2021-11-06 16:28:43,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:28:43,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:28:44,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:28:44,325 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-06 16:28:44,325 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:28:44,325 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021458422] [2021-11-06 16:28:44,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021458422] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:28:44,325 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:28:44,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 16:28:44,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596570249] [2021-11-06 16:28:44,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 16:28:44,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:28:44,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 16:28:44,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 16:28:44,326 INFO L87 Difference]: Start difference. First operand 13563 states and 18950 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:28:46,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:28:46,308 INFO L93 Difference]: Finished difference Result 66935 states and 93632 transitions. [2021-11-06 16:28:46,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 16:28:46,309 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 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 87 [2021-11-06 16:28:46,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:28:46,415 INFO L225 Difference]: With dead ends: 66935 [2021-11-06 16:28:46,416 INFO L226 Difference]: Without dead ends: 53390 [2021-11-06 16:28:46,455 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 16:28:46,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53390 states. [2021-11-06 16:28:47,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53390 to 13567. [2021-11-06 16:28:47,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13567 states, 13559 states have (on average 1.3978906999041227) internal successors, (18954), 13566 states have internal predecessors, (18954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:28:47,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13567 states to 13567 states and 18954 transitions. [2021-11-06 16:28:47,286 INFO L78 Accepts]: Start accepts. Automaton has 13567 states and 18954 transitions. Word has length 87 [2021-11-06 16:28:47,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:28:47,287 INFO L470 AbstractCegarLoop]: Abstraction has 13567 states and 18954 transitions. [2021-11-06 16:28:47,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:28:47,287 INFO L276 IsEmpty]: Start isEmpty. Operand 13567 states and 18954 transitions. [2021-11-06 16:28:47,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-06 16:28:47,289 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:28:47,289 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:28:47,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-06 16:28:47,289 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 16:28:47,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:28:47,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1723322813, now seen corresponding path program 1 times [2021-11-06 16:28:47,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:28:47,290 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456501408] [2021-11-06 16:28:47,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:28:47,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:28:47,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:28:47,836 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-06 16:28:47,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:28:47,836 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456501408] [2021-11-06 16:28:47,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456501408] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:28:47,836 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:28:47,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 16:28:47,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911942312] [2021-11-06 16:28:47,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 16:28:47,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:28:47,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 16:28:47,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:28:47,837 INFO L87 Difference]: Start difference. First operand 13567 states and 18954 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:28:51,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:28:51,335 INFO L93 Difference]: Finished difference Result 40477 states and 56590 transitions. [2021-11-06 16:28:51,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 16:28:51,335 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 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 89 [2021-11-06 16:28:51,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:28:51,382 INFO L225 Difference]: With dead ends: 40477 [2021-11-06 16:28:51,382 INFO L226 Difference]: Without dead ends: 26928 [2021-11-06 16:28:51,397 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 16:28:51,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26928 states. [2021-11-06 16:28:52,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26928 to 26855. [2021-11-06 16:28:52,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26855 states, 26847 states have (on average 1.3997094647446642) internal successors, (37578), 26854 states have internal predecessors, (37578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:28:52,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26855 states to 26855 states and 37578 transitions. [2021-11-06 16:28:52,400 INFO L78 Accepts]: Start accepts. Automaton has 26855 states and 37578 transitions. Word has length 89 [2021-11-06 16:28:52,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:28:52,400 INFO L470 AbstractCegarLoop]: Abstraction has 26855 states and 37578 transitions. [2021-11-06 16:28:52,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:28:52,400 INFO L276 IsEmpty]: Start isEmpty. Operand 26855 states and 37578 transitions. [2021-11-06 16:28:52,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-06 16:28:52,403 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:28:52,403 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:28:52,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-06 16:28:52,404 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 16:28:52,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:28:52,404 INFO L85 PathProgramCache]: Analyzing trace with hash 2048144034, now seen corresponding path program 1 times [2021-11-06 16:28:52,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:28:52,405 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522736928] [2021-11-06 16:28:52,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:28:52,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:28:52,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:28:53,054 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-06 16:28:53,055 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:28:53,055 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522736928] [2021-11-06 16:28:53,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522736928] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:28:53,055 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:28:53,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 16:28:53,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44703641] [2021-11-06 16:28:53,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 16:28:53,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:28:53,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 16:28:53,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 16:28:53,056 INFO L87 Difference]: Start difference. First operand 26855 states and 37578 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:28:57,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:28:57,924 INFO L93 Difference]: Finished difference Result 132621 states and 185794 transitions. [2021-11-06 16:28:57,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 16:28:57,925 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2021-11-06 16:28:57,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:28:58,177 INFO L225 Difference]: With dead ends: 132621 [2021-11-06 16:28:58,177 INFO L226 Difference]: Without dead ends: 105784 [2021-11-06 16:28:58,236 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 16:28:58,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105784 states. [2021-11-06 16:29:00,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105784 to 26771. [2021-11-06 16:29:00,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26771 states, 26763 states have (on average 1.3996188768075328) internal successors, (37458), 26770 states have internal predecessors, (37458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:29:00,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26771 states to 26771 states and 37458 transitions. [2021-11-06 16:29:00,086 INFO L78 Accepts]: Start accepts. Automaton has 26771 states and 37458 transitions. Word has length 92 [2021-11-06 16:29:00,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:29:00,086 INFO L470 AbstractCegarLoop]: Abstraction has 26771 states and 37458 transitions. [2021-11-06 16:29:00,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:29:00,086 INFO L276 IsEmpty]: Start isEmpty. Operand 26771 states and 37458 transitions. [2021-11-06 16:29:00,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-06 16:29:00,089 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:29:00,089 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:29:00,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-06 16:29:00,090 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 16:29:00,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:29:00,096 INFO L85 PathProgramCache]: Analyzing trace with hash -188643836, now seen corresponding path program 1 times [2021-11-06 16:29:00,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:29:00,096 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868522841] [2021-11-06 16:29:00,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:29:00,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:29:00,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:29:00,743 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 16:29:00,743 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:29:00,743 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868522841] [2021-11-06 16:29:00,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868522841] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 16:29:00,744 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442135737] [2021-11-06 16:29:00,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:29:00,744 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 16:29:00,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 16:29:00,745 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 16:29:00,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-06 16:29:04,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:29:04,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 13401 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 16:29:04,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 16:29:05,510 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 16:29:05,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442135737] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:29:05,511 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 16:29:05,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2021-11-06 16:29:05,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270319451] [2021-11-06 16:29:05,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 16:29:05,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:29:05,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 16:29:05,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 16:29:05,512 INFO L87 Difference]: Start difference. First operand 26771 states and 37458 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:29:11,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:29:11,554 INFO L93 Difference]: Finished difference Result 80279 states and 112329 transitions. [2021-11-06 16:29:11,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 16:29:11,555 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 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 97 [2021-11-06 16:29:11,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:29:11,688 INFO L225 Difference]: With dead ends: 80279 [2021-11-06 16:29:11,688 INFO L226 Difference]: Without dead ends: 80271 [2021-11-06 16:29:11,715 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 16:29:11,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80271 states. [2021-11-06 16:29:15,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80271 to 80183. [2021-11-06 16:29:15,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80183 states, 80175 states have (on average 1.3996632366697848) internal successors, (112218), 80182 states have internal predecessors, (112218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:29:15,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80183 states to 80183 states and 112218 transitions. [2021-11-06 16:29:15,665 INFO L78 Accepts]: Start accepts. Automaton has 80183 states and 112218 transitions. Word has length 97 [2021-11-06 16:29:15,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:29:15,665 INFO L470 AbstractCegarLoop]: Abstraction has 80183 states and 112218 transitions. [2021-11-06 16:29:15,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:29:15,665 INFO L276 IsEmpty]: Start isEmpty. Operand 80183 states and 112218 transitions. [2021-11-06 16:29:15,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-06 16:29:15,672 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:29:15,672 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:29:15,715 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-06 16:29:15,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-11-06 16:29:15,899 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 16:29:15,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:29:15,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1901741403, now seen corresponding path program 1 times [2021-11-06 16:29:15,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:29:15,900 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006620612] [2021-11-06 16:29:15,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:29:15,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:29:16,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:29:16,694 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-06 16:29:16,694 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:29:16,694 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006620612] [2021-11-06 16:29:16,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006620612] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 16:29:16,694 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 16:29:16,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 16:29:16,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422974958] [2021-11-06 16:29:16,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 16:29:16,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 16:29:16,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 16:29:16,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 16:29:16,696 INFO L87 Difference]: Start difference. First operand 80183 states and 112218 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:29:21,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 16:29:21,444 INFO L93 Difference]: Finished difference Result 101388 states and 141492 transitions. [2021-11-06 16:29:21,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 16:29:21,445 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 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 98 [2021-11-06 16:29:21,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 16:29:21,698 INFO L225 Difference]: With dead ends: 101388 [2021-11-06 16:29:21,699 INFO L226 Difference]: Without dead ends: 96398 [2021-11-06 16:29:21,731 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 16:29:21,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96398 states. [2021-11-06 16:29:25,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96398 to 80183. [2021-11-06 16:29:26,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80183 states, 80175 states have (on average 1.399513564078578) internal successors, (112206), 80182 states have internal predecessors, (112206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:29:26,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80183 states to 80183 states and 112206 transitions. [2021-11-06 16:29:26,273 INFO L78 Accepts]: Start accepts. Automaton has 80183 states and 112206 transitions. Word has length 98 [2021-11-06 16:29:26,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 16:29:26,273 INFO L470 AbstractCegarLoop]: Abstraction has 80183 states and 112206 transitions. [2021-11-06 16:29:26,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 16:29:26,273 INFO L276 IsEmpty]: Start isEmpty. Operand 80183 states and 112206 transitions. [2021-11-06 16:29:26,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-06 16:29:26,282 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 16:29:26,282 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 16:29:26,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-06 16:29:26,282 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-06 16:29:26,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 16:29:26,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1178813530, now seen corresponding path program 1 times [2021-11-06 16:29:26,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 16:29:26,283 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497237927] [2021-11-06 16:29:26,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:29:26,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 16:29:26,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 16:29:27,134 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 24 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-06 16:29:27,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 16:29:27,135 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497237927] [2021-11-06 16:29:27,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497237927] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 16:29:27,135 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779121955] [2021-11-06 16:29:27,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 16:29:27,136 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 16:29:27,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 16:29:27,137 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 16:29:27,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process