./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--input--mousedev.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5b36d44f 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--input--mousedev.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 d256a8b259faad28b260c065eb5db63197c2a9358a88ea40fe4f65cbd4165ef2 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 14:57:08,072 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 14:57:08,075 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 14:57:08,145 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 14:57:08,145 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 14:57:08,148 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 14:57:08,149 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 14:57:08,152 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 14:57:08,153 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 14:57:08,157 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 14:57:08,158 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 14:57:08,159 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 14:57:08,159 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 14:57:08,161 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 14:57:08,163 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 14:57:08,165 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 14:57:08,167 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 14:57:08,168 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 14:57:08,170 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 14:57:08,174 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 14:57:08,176 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 14:57:08,177 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 14:57:08,178 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 14:57:08,179 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 14:57:08,184 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 14:57:08,184 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 14:57:08,185 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 14:57:08,186 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 14:57:08,187 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 14:57:08,187 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 14:57:08,188 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 14:57:08,189 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 14:57:08,190 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 14:57:08,191 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 14:57:08,191 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 14:57:08,192 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 14:57:08,192 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 14:57:08,193 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 14:57:08,193 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 14:57:08,194 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 14:57:08,194 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 14:57:08,195 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 14:57:08,221 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 14:57:08,221 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 14:57:08,222 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 14:57:08,222 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 14:57:08,223 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 14:57:08,223 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 14:57:08,223 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 14:57:08,223 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 14:57:08,223 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 14:57:08,224 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 14:57:08,224 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 14:57:08,224 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 14:57:08,225 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 14:57:08,225 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 14:57:08,225 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 14:57:08,225 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 14:57:08,225 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 14:57:08,225 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 14:57:08,225 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 14:57:08,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 14:57:08,226 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 14:57:08,226 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 14:57:08,226 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 14:57:08,226 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 14:57:08,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 14:57:08,226 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 14:57:08,227 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 14:57:08,227 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 14:57:08,227 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 14:57:08,227 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d256a8b259faad28b260c065eb5db63197c2a9358a88ea40fe4f65cbd4165ef2 [2021-11-07 14:57:08,450 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 14:57:08,476 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 14:57:08,478 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 14:57:08,480 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 14:57:08,481 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 14:57:08,482 INFO L432 ainManager$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--input--mousedev.ko-entry_point.cil.out.i [2021-11-07 14:57:08,542 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37d53cdfa/3c74408ab6d44bcf939d7dcf652f356a/FLAGbe4ab5e52 [2021-11-07 14:57:09,034 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 14:57:09,035 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--input--mousedev.ko-entry_point.cil.out.i [2021-11-07 14:57:09,065 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37d53cdfa/3c74408ab6d44bcf939d7dcf652f356a/FLAGbe4ab5e52 [2021-11-07 14:57:09,298 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37d53cdfa/3c74408ab6d44bcf939d7dcf652f356a [2021-11-07 14:57:09,301 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 14:57:09,303 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 14:57:09,306 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 14:57:09,306 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 14:57:09,308 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 14:57:09,309 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:57:09" (1/1) ... [2021-11-07 14:57:09,310 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fea6c75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:57:09, skipping insertion in model container [2021-11-07 14:57:09,310 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:57:09" (1/1) ... [2021-11-07 14:57:09,316 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 14:57:09,402 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 14:57:10,305 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--input--mousedev.ko-entry_point.cil.out.i[159905,159918] [2021-11-07 14:57:10,390 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 14:57:10,423 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 14:57:10,669 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--input--mousedev.ko-entry_point.cil.out.i[159905,159918] [2021-11-07 14:57:10,682 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 14:57:10,771 INFO L208 MainTranslator]: Completed translation [2021-11-07 14:57:10,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:57:10 WrapperNode [2021-11-07 14:57:10,772 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 14:57:10,774 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 14:57:10,774 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 14:57:10,774 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 14:57:10,780 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:57:10" (1/1) ... [2021-11-07 14:57:10,839 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:57:10" (1/1) ... [2021-11-07 14:57:11,100 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 14:57:11,100 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 14:57:11,101 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 14:57:11,101 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 14:57:11,114 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:57:10" (1/1) ... [2021-11-07 14:57:11,114 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:57:10" (1/1) ... [2021-11-07 14:57:11,198 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:57:10" (1/1) ... [2021-11-07 14:57:11,199 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:57:10" (1/1) ... [2021-11-07 14:57:11,436 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:57:10" (1/1) ... [2021-11-07 14:57:11,561 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:57:10" (1/1) ... [2021-11-07 14:57:11,585 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:57:10" (1/1) ... [2021-11-07 14:57:11,628 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 14:57:11,629 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 14:57:11,630 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 14:57:11,630 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 14:57:11,630 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:57:10" (1/1) ... [2021-11-07 14:57:11,635 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 14:57:11,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 14:57:11,654 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) [2021-11-07 14:57:11,679 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 [2021-11-07 14:57:11,701 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 14:57:11,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 14:57:11,702 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 14:57:11,703 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 14:57:11,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 14:57:11,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 14:57:11,703 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 14:57:11,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 14:57:11,703 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 14:57:11,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 14:57:11,703 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 14:57:11,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 14:57:11,704 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-07 14:57:11,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 14:57:11,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 14:57:11,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 14:57:21,186 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 14:57:21,186 INFO L299 CfgBuilder]: Removed 2088 assume(true) statements. [2021-11-07 14:57:21,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:57:21 BoogieIcfgContainer [2021-11-07 14:57:21,190 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 14:57:21,191 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 14:57:21,192 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 14:57:21,194 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 14:57:21,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:57:09" (1/3) ... [2021-11-07 14:57:21,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b10c766 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:57:21, skipping insertion in model container [2021-11-07 14:57:21,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:57:10" (2/3) ... [2021-11-07 14:57:21,196 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b10c766 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:57:21, skipping insertion in model container [2021-11-07 14:57:21,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:57:21" (3/3) ... [2021-11-07 14:57:21,197 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--input--mousedev.ko-entry_point.cil.out.i [2021-11-07 14:57:21,201 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 14:57:21,202 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2021-11-07 14:57:21,249 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 14:57:21,261 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 [2021-11-07 14:57:21,262 INFO L340 AbstractCegarLoop]: Starting to check reachability of 42 error locations. [2021-11-07 14:57:21,301 INFO L276 IsEmpty]: Start isEmpty. Operand has 2619 states, 2576 states have (on average 1.529503105590062) internal successors, (3940), 2618 states have internal predecessors, (3940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:57:21,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-07 14:57:21,308 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:57:21,309 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:57:21,309 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-07 14:57:21,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:57:21,313 INFO L85 PathProgramCache]: Analyzing trace with hash -571058910, now seen corresponding path program 1 times [2021-11-07 14:57:21,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:57:21,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261239565] [2021-11-07 14:57:21,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:57:21,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:57:21,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:57:21,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 14:57:21,694 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:57:21,695 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261239565] [2021-11-07 14:57:21,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261239565] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:57:21,699 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:57:21,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 14:57:21,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965904018] [2021-11-07 14:57:21,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:57:21,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 14:57:21,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:57:21,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 14:57:21,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 14:57:21,730 INFO L87 Difference]: Start difference. First operand has 2619 states, 2576 states have (on average 1.529503105590062) internal successors, (3940), 2618 states have internal predecessors, (3940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 35.5) internal successors, (71), 2 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) [2021-11-07 14:57:21,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:57:21,862 INFO L93 Difference]: Finished difference Result 5234 states and 7875 transitions. [2021-11-07 14:57:21,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 14:57:21,864 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 35.5) internal successors, (71), 2 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 [2021-11-07 14:57:21,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:57:21,887 INFO L225 Difference]: With dead ends: 5234 [2021-11-07 14:57:21,888 INFO L226 Difference]: Without dead ends: 2611 [2021-11-07 14:57:21,898 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 14:57:21,903 INFO L933 BasicCegarLoop]: 3871 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3871 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.93ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-07 14:57:21,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 3871 Invalid, 0 Unknown, 0 Unchecked, 24.93ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-07 14:57:21,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2611 states. [2021-11-07 14:57:21,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2611 to 2611. [2021-11-07 14:57:22,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2611 states, 2569 states have (on average 1.5021409108602568) internal successors, (3859), 2610 states have internal predecessors, (3859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:57:22,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2611 states to 2611 states and 3859 transitions. [2021-11-07 14:57:22,015 INFO L78 Accepts]: Start accepts. Automaton has 2611 states and 3859 transitions. Word has length 71 [2021-11-07 14:57:22,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:57:22,016 INFO L470 AbstractCegarLoop]: Abstraction has 2611 states and 3859 transitions. [2021-11-07 14:57:22,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 35.5) internal successors, (71), 2 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) [2021-11-07 14:57:22,016 INFO L276 IsEmpty]: Start isEmpty. Operand 2611 states and 3859 transitions. [2021-11-07 14:57:22,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-07 14:57:22,022 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:57:22,022 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:57:22,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 14:57:22,023 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-07 14:57:22,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:57:22,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1311868076, now seen corresponding path program 1 times [2021-11-07 14:57:22,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:57:22,025 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100565949] [2021-11-07 14:57:22,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:57:22,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:57:22,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:57:22,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 14:57:22,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:57:22,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100565949] [2021-11-07 14:57:22,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100565949] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:57:22,282 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:57:22,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 14:57:22,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946565538] [2021-11-07 14:57:22,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:57:22,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 14:57:22,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:57:22,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 14:57:22,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:57:22,284 INFO L87 Difference]: Start difference. First operand 2611 states and 3859 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) [2021-11-07 14:57:22,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:57:22,448 INFO L93 Difference]: Finished difference Result 5832 states and 8527 transitions. [2021-11-07 14:57:22,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 14:57:22,448 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 [2021-11-07 14:57:22,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:57:22,461 INFO L225 Difference]: With dead ends: 5832 [2021-11-07 14:57:22,462 INFO L226 Difference]: Without dead ends: 3283 [2021-11-07 14:57:22,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.59ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:57:22,467 INFO L933 BasicCegarLoop]: 3858 mSDtfsCounter, 945 mSDsluCounter, 3764 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 61.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 945 SdHoareTripleChecker+Valid, 7622 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.81ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 73.85ms IncrementalHoareTripleChecker+Time [2021-11-07 14:57:22,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [945 Valid, 7622 Invalid, 26 Unknown, 0 Unchecked, 13.81ms Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 73.85ms Time] [2021-11-07 14:57:22,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3283 states. [2021-11-07 14:57:22,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3283 to 3195. [2021-11-07 14:57:22,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3195 states, 3153 states have (on average 1.4808119251506502) internal successors, (4669), 3194 states have internal predecessors, (4669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:57:22,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3195 states to 3195 states and 4669 transitions. [2021-11-07 14:57:22,539 INFO L78 Accepts]: Start accepts. Automaton has 3195 states and 4669 transitions. Word has length 71 [2021-11-07 14:57:22,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:57:22,541 INFO L470 AbstractCegarLoop]: Abstraction has 3195 states and 4669 transitions. [2021-11-07 14:57:22,541 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) [2021-11-07 14:57:22,542 INFO L276 IsEmpty]: Start isEmpty. Operand 3195 states and 4669 transitions. [2021-11-07 14:57:22,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-07 14:57:22,544 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:57:22,544 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:57:22,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 14:57:22,545 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-07 14:57:22,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:57:22,545 INFO L85 PathProgramCache]: Analyzing trace with hash -2119557104, now seen corresponding path program 1 times [2021-11-07 14:57:22,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:57:22,546 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118992387] [2021-11-07 14:57:22,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:57:22,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:57:22,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:57:22,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 14:57:22,696 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:57:22,696 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118992387] [2021-11-07 14:57:22,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118992387] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:57:22,697 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:57:22,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 14:57:22,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233195797] [2021-11-07 14:57:22,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:57:22,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 14:57:22,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:57:22,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 14:57:22,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:57:22,700 INFO L87 Difference]: Start difference. First operand 3195 states and 4669 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:57:24,722 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 14:57:24,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:57:24,931 INFO L93 Difference]: Finished difference Result 9134 states and 13478 transitions. [2021-11-07 14:57:24,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 14:57:24,932 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 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 [2021-11-07 14:57:24,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:57:24,960 INFO L225 Difference]: With dead ends: 9134 [2021-11-07 14:57:24,961 INFO L226 Difference]: Without dead ends: 6001 [2021-11-07 14:57:24,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.58ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:57:24,974 INFO L933 BasicCegarLoop]: 6761 mSDtfsCounter, 3727 mSDsluCounter, 3680 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2030.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3727 SdHoareTripleChecker+Valid, 10441 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.51ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2073.49ms IncrementalHoareTripleChecker+Time [2021-11-07 14:57:24,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3727 Valid, 10441 Invalid, 15 Unknown, 0 Unchecked, 17.51ms Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 2073.49ms Time] [2021-11-07 14:57:24,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6001 states. [2021-11-07 14:57:25,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6001 to 5937. [2021-11-07 14:57:25,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5937 states, 5895 states have (on average 1.4999151823579304) internal successors, (8842), 5936 states have internal predecessors, (8842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:57:25,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5937 states to 5937 states and 8842 transitions. [2021-11-07 14:57:25,273 INFO L78 Accepts]: Start accepts. Automaton has 5937 states and 8842 transitions. Word has length 74 [2021-11-07 14:57:25,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:57:25,275 INFO L470 AbstractCegarLoop]: Abstraction has 5937 states and 8842 transitions. [2021-11-07 14:57:25,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:57:25,275 INFO L276 IsEmpty]: Start isEmpty. Operand 5937 states and 8842 transitions. [2021-11-07 14:57:25,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-07 14:57:25,277 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:57:25,277 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:57:25,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 14:57:25,278 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-07 14:57:25,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:57:25,279 INFO L85 PathProgramCache]: Analyzing trace with hash 472182075, now seen corresponding path program 1 times [2021-11-07 14:57:25,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:57:25,279 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315491797] [2021-11-07 14:57:25,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:57:25,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:57:25,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:57:25,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 14:57:25,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:57:25,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315491797] [2021-11-07 14:57:25,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315491797] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:57:25,428 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:57:25,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 14:57:25,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696503618] [2021-11-07 14:57:25,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:57:25,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 14:57:25,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:57:25,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 14:57:25,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:57:25,431 INFO L87 Difference]: Start difference. First operand 5937 states and 8842 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 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) [2021-11-07 14:57:25,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:57:25,655 INFO L93 Difference]: Finished difference Result 15721 states and 23656 transitions. [2021-11-07 14:57:25,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 14:57:25,655 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 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 78 [2021-11-07 14:57:25,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:57:25,687 INFO L225 Difference]: With dead ends: 15721 [2021-11-07 14:57:25,688 INFO L226 Difference]: Without dead ends: 9846 [2021-11-07 14:57:25,698 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.60ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:57:25,699 INFO L933 BasicCegarLoop]: 3864 mSDtfsCounter, 3131 mSDsluCounter, 3694 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 61.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3131 SdHoareTripleChecker+Valid, 7558 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.86ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 75.96ms IncrementalHoareTripleChecker+Time [2021-11-07 14:57:25,699 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3131 Valid, 7558 Invalid, 51 Unknown, 0 Unchecked, 8.86ms Time], IncrementalHoareTripleChecker [15 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 75.96ms Time] [2021-11-07 14:57:25,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9846 states. [2021-11-07 14:57:25,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9846 to 9618. [2021-11-07 14:57:25,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9618 states, 9576 states have (on average 1.5279866332497911) internal successors, (14632), 9617 states have internal predecessors, (14632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:57:25,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9618 states to 9618 states and 14632 transitions. [2021-11-07 14:57:25,954 INFO L78 Accepts]: Start accepts. Automaton has 9618 states and 14632 transitions. Word has length 78 [2021-11-07 14:57:25,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:57:25,955 INFO L470 AbstractCegarLoop]: Abstraction has 9618 states and 14632 transitions. [2021-11-07 14:57:25,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 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) [2021-11-07 14:57:25,955 INFO L276 IsEmpty]: Start isEmpty. Operand 9618 states and 14632 transitions. [2021-11-07 14:57:25,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-07 14:57:25,955 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:57:25,956 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:57:25,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 14:57:25,956 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-07 14:57:25,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:57:25,957 INFO L85 PathProgramCache]: Analyzing trace with hash -658626127, now seen corresponding path program 1 times [2021-11-07 14:57:25,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:57:25,957 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002138351] [2021-11-07 14:57:25,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:57:25,957 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:57:26,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:57:26,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 14:57:26,084 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:57:26,084 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002138351] [2021-11-07 14:57:26,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002138351] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:57:26,085 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:57:26,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 14:57:26,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939772230] [2021-11-07 14:57:26,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:57:26,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 14:57:26,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:57:26,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 14:57:26,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:57:26,086 INFO L87 Difference]: Start difference. First operand 9618 states and 14632 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 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) [2021-11-07 14:57:26,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:57:26,516 INFO L93 Difference]: Finished difference Result 28033 states and 42946 transitions. [2021-11-07 14:57:26,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 14:57:26,517 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 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 87 [2021-11-07 14:57:26,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:57:26,564 INFO L225 Difference]: With dead ends: 28033 [2021-11-07 14:57:26,564 INFO L226 Difference]: Without dead ends: 18476 [2021-11-07 14:57:26,583 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.51ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:57:26,584 INFO L933 BasicCegarLoop]: 3956 mSDtfsCounter, 3595 mSDsluCounter, 3513 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 83.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3595 SdHoareTripleChecker+Valid, 7469 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.36ms SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 108.33ms IncrementalHoareTripleChecker+Time [2021-11-07 14:57:26,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3595 Valid, 7469 Invalid, 161 Unknown, 0 Unchecked, 9.36ms Time], IncrementalHoareTripleChecker [61 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 108.33ms Time] [2021-11-07 14:57:26,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18476 states. [2021-11-07 14:57:26,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18476 to 18206. [2021-11-07 14:57:26,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18206 states, 18166 states have (on average 1.539084003082682) internal successors, (27959), 18205 states have internal predecessors, (27959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:57:26,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18206 states to 18206 states and 27959 transitions. [2021-11-07 14:57:26,962 INFO L78 Accepts]: Start accepts. Automaton has 18206 states and 27959 transitions. Word has length 87 [2021-11-07 14:57:26,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:57:26,964 INFO L470 AbstractCegarLoop]: Abstraction has 18206 states and 27959 transitions. [2021-11-07 14:57:26,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 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) [2021-11-07 14:57:26,965 INFO L276 IsEmpty]: Start isEmpty. Operand 18206 states and 27959 transitions. [2021-11-07 14:57:26,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-07 14:57:26,967 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:57:26,967 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:57:26,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 14:57:26,967 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-07 14:57:26,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:57:26,968 INFO L85 PathProgramCache]: Analyzing trace with hash -268580366, now seen corresponding path program 1 times [2021-11-07 14:57:26,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:57:26,968 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642967521] [2021-11-07 14:57:26,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:57:26,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:57:27,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:57:27,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 14:57:27,157 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:57:27,157 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642967521] [2021-11-07 14:57:27,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642967521] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:57:27,158 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:57:27,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 14:57:27,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970488430] [2021-11-07 14:57:27,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:57:27,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 14:57:27,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:57:27,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 14:57:27,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:57:27,159 INFO L87 Difference]: Start difference. First operand 18206 states and 27959 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:57:27,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:57:27,363 INFO L93 Difference]: Finished difference Result 18206 states and 27959 transitions. [2021-11-07 14:57:27,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 14:57:27,364 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 0 states have call successors, (0), 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 [2021-11-07 14:57:27,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:57:27,402 INFO L225 Difference]: With dead ends: 18206 [2021-11-07 14:57:27,402 INFO L226 Difference]: Without dead ends: 18204 [2021-11-07 14:57:27,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.59ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:57:27,413 INFO L933 BasicCegarLoop]: 3852 mSDtfsCounter, 3766 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3766 SdHoareTripleChecker+Valid, 3852 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.37ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.95ms IncrementalHoareTripleChecker+Time [2021-11-07 14:57:27,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3766 Valid, 3852 Invalid, 1 Unknown, 0 Unchecked, 6.37ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.95ms Time] [2021-11-07 14:57:27,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18204 states. [2021-11-07 14:57:27,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18204 to 18204. [2021-11-07 14:57:27,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18204 states, 18165 states have (on average 1.5390035783099367) internal successors, (27956), 18203 states have internal predecessors, (27956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:57:27,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18204 states to 18204 states and 27956 transitions. [2021-11-07 14:57:27,971 INFO L78 Accepts]: Start accepts. Automaton has 18204 states and 27956 transitions. Word has length 89 [2021-11-07 14:57:27,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:57:27,971 INFO L470 AbstractCegarLoop]: Abstraction has 18204 states and 27956 transitions. [2021-11-07 14:57:27,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:57:27,972 INFO L276 IsEmpty]: Start isEmpty. Operand 18204 states and 27956 transitions. [2021-11-07 14:57:27,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-07 14:57:27,972 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:57:27,972 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:57:27,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 14:57:27,973 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-07 14:57:27,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:57:27,974 INFO L85 PathProgramCache]: Analyzing trace with hash 263959193, now seen corresponding path program 1 times [2021-11-07 14:57:27,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:57:27,974 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633542733] [2021-11-07 14:57:27,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:57:27,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:57:28,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:57:28,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 14:57:28,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:57:28,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633542733] [2021-11-07 14:57:28,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633542733] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:57:28,088 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:57:28,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 14:57:28,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437562906] [2021-11-07 14:57:28,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:57:28,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 14:57:28,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:57:28,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 14:57:28,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:57:28,090 INFO L87 Difference]: Start difference. First operand 18204 states and 27956 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:57:28,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:57:28,249 INFO L93 Difference]: Finished difference Result 18204 states and 27956 transitions. [2021-11-07 14:57:28,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 14:57:28,250 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2021-11-07 14:57:28,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:57:28,288 INFO L225 Difference]: With dead ends: 18204 [2021-11-07 14:57:28,288 INFO L226 Difference]: Without dead ends: 18202 [2021-11-07 14:57:28,296 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.49ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:57:28,297 INFO L933 BasicCegarLoop]: 3850 mSDtfsCounter, 3763 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3763 SdHoareTripleChecker+Valid, 3850 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.16ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.97ms IncrementalHoareTripleChecker+Time [2021-11-07 14:57:28,297 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3763 Valid, 3850 Invalid, 1 Unknown, 0 Unchecked, 5.16ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.97ms Time] [2021-11-07 14:57:28,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18202 states. [2021-11-07 14:57:28,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18202 to 18202. [2021-11-07 14:57:28,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18202 states, 18164 states have (on average 1.5389231446817881) internal successors, (27953), 18201 states have internal predecessors, (27953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:57:28,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18202 states to 18202 states and 27953 transitions. [2021-11-07 14:57:28,628 INFO L78 Accepts]: Start accepts. Automaton has 18202 states and 27953 transitions. Word has length 90 [2021-11-07 14:57:28,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:57:28,628 INFO L470 AbstractCegarLoop]: Abstraction has 18202 states and 27953 transitions. [2021-11-07 14:57:28,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:57:28,629 INFO L276 IsEmpty]: Start isEmpty. Operand 18202 states and 27953 transitions. [2021-11-07 14:57:28,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-07 14:57:28,630 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:57:28,630 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:57:28,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 14:57:28,630 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-07 14:57:28,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:57:28,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1363288266, now seen corresponding path program 1 times [2021-11-07 14:57:28,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:57:28,631 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246593186] [2021-11-07 14:57:28,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:57:28,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:57:28,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:57:28,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 14:57:28,792 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:57:28,792 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246593186] [2021-11-07 14:57:28,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246593186] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:57:28,792 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:57:28,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 14:57:28,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528819342] [2021-11-07 14:57:28,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:57:28,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 14:57:28,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:57:28,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 14:57:28,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:57:28,794 INFO L87 Difference]: Start difference. First operand 18202 states and 27953 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:57:30,809 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 14:57:31,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:57:31,224 INFO L93 Difference]: Finished difference Result 36274 states and 55769 transitions. [2021-11-07 14:57:31,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 14:57:31,225 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2021-11-07 14:57:31,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:57:31,264 INFO L225 Difference]: With dead ends: 36274 [2021-11-07 14:57:31,264 INFO L226 Difference]: Without dead ends: 18134 [2021-11-07 14:57:31,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.39ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:57:31,288 INFO L933 BasicCegarLoop]: 7064 mSDtfsCounter, 3501 mSDsluCounter, 3634 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 47 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2080.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3501 SdHoareTripleChecker+Valid, 10698 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.28ms SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2156.88ms IncrementalHoareTripleChecker+Time [2021-11-07 14:57:31,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3501 Valid, 10698 Invalid, 119 Unknown, 0 Unchecked, 13.28ms Time], IncrementalHoareTripleChecker [47 Valid, 71 Invalid, 1 Unknown, 0 Unchecked, 2156.88ms Time] [2021-11-07 14:57:31,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18134 states. [2021-11-07 14:57:31,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18134 to 18060. [2021-11-07 14:57:31,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18060 states, 18036 states have (on average 1.5367043690396984) internal successors, (27716), 18059 states have internal predecessors, (27716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:57:31,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18060 states to 18060 states and 27716 transitions. [2021-11-07 14:57:31,598 INFO L78 Accepts]: Start accepts. Automaton has 18060 states and 27716 transitions. Word has length 91 [2021-11-07 14:57:31,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:57:31,599 INFO L470 AbstractCegarLoop]: Abstraction has 18060 states and 27716 transitions. [2021-11-07 14:57:31,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:57:31,599 INFO L276 IsEmpty]: Start isEmpty. Operand 18060 states and 27716 transitions. [2021-11-07 14:57:31,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-07 14:57:31,600 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:57:31,600 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:57:31,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-07 14:57:31,600 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-07 14:57:31,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:57:31,601 INFO L85 PathProgramCache]: Analyzing trace with hash -407183652, now seen corresponding path program 1 times [2021-11-07 14:57:31,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:57:31,602 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082435305] [2021-11-07 14:57:31,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:57:31,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:57:31,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:57:31,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 14:57:31,732 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:57:31,732 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082435305] [2021-11-07 14:57:31,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082435305] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:57:31,732 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:57:31,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 14:57:31,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875966135] [2021-11-07 14:57:31,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:57:31,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 14:57:31,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:57:31,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 14:57:31,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:57:31,737 INFO L87 Difference]: Start difference. First operand 18060 states and 27716 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:57:31,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:57:31,994 INFO L93 Difference]: Finished difference Result 18060 states and 27716 transitions. [2021-11-07 14:57:31,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 14:57:31,995 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2021-11-07 14:57:31,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:57:32,032 INFO L225 Difference]: With dead ends: 18060 [2021-11-07 14:57:32,032 INFO L226 Difference]: Without dead ends: 18027 [2021-11-07 14:57:32,039 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.47ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:57:32,040 INFO L933 BasicCegarLoop]: 3784 mSDtfsCounter, 3696 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3696 SdHoareTripleChecker+Valid, 3784 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.55ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.95ms IncrementalHoareTripleChecker+Time [2021-11-07 14:57:32,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3696 Valid, 3784 Invalid, 1 Unknown, 0 Unchecked, 3.55ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.95ms Time] [2021-11-07 14:57:32,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18027 states. [2021-11-07 14:57:32,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18027 to 18027. [2021-11-07 14:57:32,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18027 states, 18004 states have (on average 1.536825149966674) internal successors, (27669), 18026 states have internal predecessors, (27669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:57:32,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18027 states to 18027 states and 27669 transitions. [2021-11-07 14:57:32,362 INFO L78 Accepts]: Start accepts. Automaton has 18027 states and 27669 transitions. Word has length 91 [2021-11-07 14:57:32,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:57:32,362 INFO L470 AbstractCegarLoop]: Abstraction has 18027 states and 27669 transitions. [2021-11-07 14:57:32,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:57:32,363 INFO L276 IsEmpty]: Start isEmpty. Operand 18027 states and 27669 transitions. [2021-11-07 14:57:32,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-07 14:57:32,365 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:57:32,366 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:57:32,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-07 14:57:32,366 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-07 14:57:32,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:57:32,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1882604641, now seen corresponding path program 1 times [2021-11-07 14:57:32,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:57:32,367 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975893461] [2021-11-07 14:57:32,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:57:32,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:57:32,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:57:32,485 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 14:57:32,485 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:57:32,485 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975893461] [2021-11-07 14:57:32,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975893461] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:57:32,486 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:57:32,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 14:57:32,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274120693] [2021-11-07 14:57:32,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:57:32,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 14:57:32,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:57:32,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 14:57:32,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:57:32,487 INFO L87 Difference]: Start difference. First operand 18027 states and 27669 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:57:34,503 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 14:57:34,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:57:34,820 INFO L93 Difference]: Finished difference Result 38106 states and 58231 transitions. [2021-11-07 14:57:34,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 14:57:34,821 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 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 105 [2021-11-07 14:57:34,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:57:34,861 INFO L225 Difference]: With dead ends: 38106 [2021-11-07 14:57:34,862 INFO L226 Difference]: Without dead ends: 20141 [2021-11-07 14:57:34,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.47ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:57:34,886 INFO L933 BasicCegarLoop]: 4553 mSDtfsCounter, 1679 mSDsluCounter, 2866 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2042.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1679 SdHoareTripleChecker+Valid, 7419 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.36ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2069.78ms IncrementalHoareTripleChecker+Time [2021-11-07 14:57:34,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1679 Valid, 7419 Invalid, 40 Unknown, 0 Unchecked, 5.36ms Time], IncrementalHoareTripleChecker [11 Valid, 28 Invalid, 1 Unknown, 0 Unchecked, 2069.78ms Time] [2021-11-07 14:57:34,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20141 states. [2021-11-07 14:57:35,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20141 to 20063. [2021-11-07 14:57:35,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20063 states, 20040 states have (on average 1.521806387225549) internal successors, (30497), 20062 states have internal predecessors, (30497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:57:35,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20063 states to 20063 states and 30497 transitions. [2021-11-07 14:57:35,391 INFO L78 Accepts]: Start accepts. Automaton has 20063 states and 30497 transitions. Word has length 105 [2021-11-07 14:57:35,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:57:35,391 INFO L470 AbstractCegarLoop]: Abstraction has 20063 states and 30497 transitions. [2021-11-07 14:57:35,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:57:35,392 INFO L276 IsEmpty]: Start isEmpty. Operand 20063 states and 30497 transitions. [2021-11-07 14:57:35,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-07 14:57:35,394 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:57:35,394 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:57:35,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-07 14:57:35,395 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-07 14:57:35,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:57:35,396 INFO L85 PathProgramCache]: Analyzing trace with hash -57225292, now seen corresponding path program 1 times [2021-11-07 14:57:35,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:57:35,396 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975991949] [2021-11-07 14:57:35,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:57:35,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:57:35,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:57:35,517 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 14:57:35,518 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:57:35,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975991949] [2021-11-07 14:57:35,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975991949] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:57:35,518 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:57:35,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 14:57:35,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651361508] [2021-11-07 14:57:35,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:57:35,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 14:57:35,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:57:35,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 14:57:35,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:57:35,520 INFO L87 Difference]: Start difference. First operand 20063 states and 30497 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:57:37,536 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 14:57:37,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:57:37,996 INFO L93 Difference]: Finished difference Result 42178 states and 63887 transitions. [2021-11-07 14:57:37,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 14:57:37,997 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 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 115 [2021-11-07 14:57:37,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:57:38,061 INFO L225 Difference]: With dead ends: 42178 [2021-11-07 14:57:38,061 INFO L226 Difference]: Without dead ends: 22177 [2021-11-07 14:57:38,088 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.47ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:57:38,089 INFO L933 BasicCegarLoop]: 4570 mSDtfsCounter, 1892 mSDsluCounter, 2658 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2045.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1892 SdHoareTripleChecker+Valid, 7228 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.32ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2082.80ms IncrementalHoareTripleChecker+Time [2021-11-07 14:57:38,089 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1892 Valid, 7228 Invalid, 41 Unknown, 0 Unchecked, 6.32ms Time], IncrementalHoareTripleChecker [12 Valid, 28 Invalid, 1 Unknown, 0 Unchecked, 2082.80ms Time] [2021-11-07 14:57:38,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22177 states. [2021-11-07 14:57:38,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22177 to 22099. [2021-11-07 14:57:38,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22099 states, 22076 states have (on average 1.5095578909222684) internal successors, (33325), 22098 states have internal predecessors, (33325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:57:38,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22099 states to 22099 states and 33325 transitions. [2021-11-07 14:57:38,503 INFO L78 Accepts]: Start accepts. Automaton has 22099 states and 33325 transitions. Word has length 115 [2021-11-07 14:57:38,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:57:38,504 INFO L470 AbstractCegarLoop]: Abstraction has 22099 states and 33325 transitions. [2021-11-07 14:57:38,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:57:38,504 INFO L276 IsEmpty]: Start isEmpty. Operand 22099 states and 33325 transitions. [2021-11-07 14:57:38,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-07 14:57:38,507 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:57:38,507 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:57:38,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-07 14:57:38,508 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-07 14:57:38,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:57:38,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1050209459, now seen corresponding path program 1 times [2021-11-07 14:57:38,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:57:38,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552915076] [2021-11-07 14:57:38,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:57:38,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:57:38,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:57:38,612 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 14:57:38,612 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:57:38,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552915076] [2021-11-07 14:57:38,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552915076] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:57:38,613 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:57:38,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 14:57:38,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952907242] [2021-11-07 14:57:38,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:57:38,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 14:57:38,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:57:38,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 14:57:38,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 14:57:38,614 INFO L87 Difference]: Start difference. First operand 22099 states and 33325 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:57:39,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:57:39,224 INFO L93 Difference]: Finished difference Result 54505 states and 82421 transitions. [2021-11-07 14:57:39,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 14:57:39,225 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2021-11-07 14:57:39,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:57:39,294 INFO L225 Difference]: With dead ends: 54505 [2021-11-07 14:57:39,294 INFO L226 Difference]: Without dead ends: 32468 [2021-11-07 14:57:39,326 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.37ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 14:57:39,327 INFO L933 BasicCegarLoop]: 6677 mSDtfsCounter, 7867 mSDsluCounter, 3760 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7867 SdHoareTripleChecker+Valid, 10437 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.79ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.58ms IncrementalHoareTripleChecker+Time [2021-11-07 14:57:39,327 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7867 Valid, 10437 Invalid, 18 Unknown, 0 Unchecked, 18.79ms Time], IncrementalHoareTripleChecker [5 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 36.58ms Time] [2021-11-07 14:57:39,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32468 states. [2021-11-07 14:57:39,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32468 to 22019. [2021-11-07 14:57:39,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22019 states, 21996 states have (on average 1.510911074740862) internal successors, (33234), 22018 states have internal predecessors, (33234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:57:39,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22019 states to 22019 states and 33234 transitions. [2021-11-07 14:57:39,914 INFO L78 Accepts]: Start accepts. Automaton has 22019 states and 33234 transitions. Word has length 121 [2021-11-07 14:57:39,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:57:39,914 INFO L470 AbstractCegarLoop]: Abstraction has 22019 states and 33234 transitions. [2021-11-07 14:57:39,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:57:39,915 INFO L276 IsEmpty]: Start isEmpty. Operand 22019 states and 33234 transitions. [2021-11-07 14:57:39,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-07 14:57:39,922 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:57:39,923 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:57:39,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-07 14:57:39,923 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-07 14:57:39,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:57:39,924 INFO L85 PathProgramCache]: Analyzing trace with hash -247642266, now seen corresponding path program 1 times [2021-11-07 14:57:39,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:57:39,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479441074] [2021-11-07 14:57:39,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:57:39,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:57:39,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:57:40,054 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 14:57:40,054 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:57:40,055 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479441074] [2021-11-07 14:57:40,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479441074] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:57:40,055 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:57:40,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 14:57:40,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457556429] [2021-11-07 14:57:40,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:57:40,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 14:57:40,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:57:40,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 14:57:40,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:57:40,056 INFO L87 Difference]: Start difference. First operand 22019 states and 33234 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:57:42,072 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 14:57:42,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:57:42,711 INFO L93 Difference]: Finished difference Result 52287 states and 79333 transitions. [2021-11-07 14:57:42,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 14:57:42,711 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-11-07 14:57:42,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:57:42,770 INFO L225 Difference]: With dead ends: 52287 [2021-11-07 14:57:42,770 INFO L226 Difference]: Without dead ends: 30330 [2021-11-07 14:57:42,799 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.50ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:57:42,799 INFO L933 BasicCegarLoop]: 6718 mSDtfsCounter, 3280 mSDsluCounter, 3403 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 20 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2069.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3280 SdHoareTripleChecker+Valid, 10121 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.53ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2127.41ms IncrementalHoareTripleChecker+Time [2021-11-07 14:57:42,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3280 Valid, 10121 Invalid, 68 Unknown, 0 Unchecked, 9.53ms Time], IncrementalHoareTripleChecker [20 Valid, 47 Invalid, 1 Unknown, 0 Unchecked, 2127.41ms Time] [2021-11-07 14:57:42,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30330 states. [2021-11-07 14:57:43,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30330 to 30067. [2021-11-07 14:57:43,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30067 states, 30044 states have (on average 1.521634935428039) internal successors, (45716), 30066 states have internal predecessors, (45716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:57:43,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30067 states to 30067 states and 45716 transitions. [2021-11-07 14:57:43,362 INFO L78 Accepts]: Start accepts. Automaton has 30067 states and 45716 transitions. Word has length 125 [2021-11-07 14:57:43,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:57:43,362 INFO L470 AbstractCegarLoop]: Abstraction has 30067 states and 45716 transitions. [2021-11-07 14:57:43,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:57:43,362 INFO L276 IsEmpty]: Start isEmpty. Operand 30067 states and 45716 transitions. [2021-11-07 14:57:43,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-07 14:57:43,367 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:57:43,367 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:57:43,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-07 14:57:43,367 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-07 14:57:43,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:57:43,368 INFO L85 PathProgramCache]: Analyzing trace with hash 89053511, now seen corresponding path program 1 times [2021-11-07 14:57:43,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:57:43,368 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787598943] [2021-11-07 14:57:43,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:57:43,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:57:43,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:57:43,530 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 14:57:43,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:57:43,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787598943] [2021-11-07 14:57:43,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787598943] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:57:43,530 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:57:43,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 14:57:43,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771080401] [2021-11-07 14:57:43,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:57:43,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 14:57:43,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:57:43,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 14:57:43,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:57:43,532 INFO L87 Difference]: Start difference. First operand 30067 states and 45716 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:57:44,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:57:44,441 INFO L93 Difference]: Finished difference Result 81844 states and 125240 transitions. [2021-11-07 14:57:44,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 14:57:44,441 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-07 14:57:44,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:57:44,555 INFO L225 Difference]: With dead ends: 81844 [2021-11-07 14:57:44,555 INFO L226 Difference]: Without dead ends: 51839 [2021-11-07 14:57:44,597 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.38ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:57:44,598 INFO L933 BasicCegarLoop]: 4700 mSDtfsCounter, 3470 mSDsluCounter, 3580 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3470 SdHoareTripleChecker+Valid, 8280 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.66ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.64ms IncrementalHoareTripleChecker+Time [2021-11-07 14:57:44,598 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3470 Valid, 8280 Invalid, 4 Unknown, 0 Unchecked, 7.66ms Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 5.64ms Time] [2021-11-07 14:57:44,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51839 states. [2021-11-07 14:57:45,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51839 to 30019. [2021-11-07 14:57:45,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30019 states, 29996 states have (on average 1.5208694492599013) internal successors, (45620), 30018 states have internal predecessors, (45620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:57:45,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30019 states to 30019 states and 45620 transitions. [2021-11-07 14:57:45,621 INFO L78 Accepts]: Start accepts. Automaton has 30019 states and 45620 transitions. Word has length 131 [2021-11-07 14:57:45,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:57:45,621 INFO L470 AbstractCegarLoop]: Abstraction has 30019 states and 45620 transitions. [2021-11-07 14:57:45,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:57:45,621 INFO L276 IsEmpty]: Start isEmpty. Operand 30019 states and 45620 transitions. [2021-11-07 14:57:45,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-07 14:57:45,626 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:57:45,626 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:57:45,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-07 14:57:45,626 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-07 14:57:45,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:57:45,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1239398831, now seen corresponding path program 1 times [2021-11-07 14:57:45,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:57:45,627 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655364501] [2021-11-07 14:57:45,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:57:45,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:57:45,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:57:45,831 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 14:57:45,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:57:45,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655364501] [2021-11-07 14:57:45,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655364501] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:57:45,832 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:57:45,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 14:57:45,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522186442] [2021-11-07 14:57:45,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:57:45,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 14:57:45,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:57:45,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 14:57:45,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:57:45,834 INFO L87 Difference]: Start difference. First operand 30019 states and 45620 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:57:46,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:57:46,748 INFO L93 Difference]: Finished difference Result 60008 states and 91215 transitions. [2021-11-07 14:57:46,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 14:57:46,749 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-07 14:57:46,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:57:46,800 INFO L225 Difference]: With dead ends: 60008 [2021-11-07 14:57:46,801 INFO L226 Difference]: Without dead ends: 30025 [2021-11-07 14:57:46,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.10ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 14:57:46,828 INFO L933 BasicCegarLoop]: 3750 mSDtfsCounter, 0 mSDsluCounter, 3693 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 90.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 7443 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.69ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 112.73ms IncrementalHoareTripleChecker+Time [2021-11-07 14:57:46,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 7443 Invalid, 73 Unknown, 0 Unchecked, 6.69ms Time], IncrementalHoareTripleChecker [10 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 112.73ms Time] [2021-11-07 14:57:46,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30025 states. [2021-11-07 14:57:47,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30025 to 30025. [2021-11-07 14:57:47,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30025 states, 30002 states have (on average 1.5207652823145124) internal successors, (45626), 30024 states have internal predecessors, (45626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:57:47,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30025 states to 30025 states and 45626 transitions. [2021-11-07 14:57:47,508 INFO L78 Accepts]: Start accepts. Automaton has 30025 states and 45626 transitions. Word has length 131 [2021-11-07 14:57:47,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:57:47,509 INFO L470 AbstractCegarLoop]: Abstraction has 30025 states and 45626 transitions. [2021-11-07 14:57:47,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:57:47,509 INFO L276 IsEmpty]: Start isEmpty. Operand 30025 states and 45626 transitions. [2021-11-07 14:57:47,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-07 14:57:47,515 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:57:47,515 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:57:47,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-07 14:57:47,516 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-07 14:57:47,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:57:47,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1002892015, now seen corresponding path program 1 times [2021-11-07 14:57:47,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:57:47,516 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024179471] [2021-11-07 14:57:47,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:57:47,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:57:47,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:57:47,688 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 14:57:47,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:57:47,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024179471] [2021-11-07 14:57:47,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024179471] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 14:57:47,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998352283] [2021-11-07 14:57:47,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:57:47,691 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 14:57:47,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 14:57:47,692 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) [2021-11-07 14:57:47,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 14:57:49,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:57:49,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 2226 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-07 14:57:49,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 14:57:49,899 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 14:57:49,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 14:57:50,143 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-07 14:57:50,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998352283] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-07 14:57:50,144 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-07 14:57:50,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2021-11-07 14:57:50,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153985865] [2021-11-07 14:57:50,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:57:50,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 14:57:50,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:57:50,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 14:57:50,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 14:57:50,145 INFO L87 Difference]: Start difference. First operand 30025 states and 45626 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:57:51,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:57:51,085 INFO L93 Difference]: Finished difference Result 60149 states and 91494 transitions. [2021-11-07 14:57:51,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 14:57:51,086 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 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 137 [2021-11-07 14:57:51,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:57:51,144 INFO L225 Difference]: With dead ends: 60149 [2021-11-07 14:57:51,145 INFO L226 Difference]: Without dead ends: 30172 [2021-11-07 14:57:51,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 25.34ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 14:57:51,177 INFO L933 BasicCegarLoop]: 3735 mSDtfsCounter, 0 mSDsluCounter, 3693 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 107.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 7428 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.77ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 133.98ms IncrementalHoareTripleChecker+Time [2021-11-07 14:57:51,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 7428 Invalid, 97 Unknown, 0 Unchecked, 5.77ms Time], IncrementalHoareTripleChecker [34 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 133.98ms Time] [2021-11-07 14:57:51,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30172 states. [2021-11-07 14:57:51,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30172 to 30172. [2021-11-07 14:57:51,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30172 states, 30149 states have (on average 1.518226143487346) internal successors, (45773), 30171 states have internal predecessors, (45773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:57:52,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30172 states to 30172 states and 45773 transitions. [2021-11-07 14:57:52,034 INFO L78 Accepts]: Start accepts. Automaton has 30172 states and 45773 transitions. Word has length 137 [2021-11-07 14:57:52,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:57:52,035 INFO L470 AbstractCegarLoop]: Abstraction has 30172 states and 45773 transitions. [2021-11-07 14:57:52,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:57:52,035 INFO L276 IsEmpty]: Start isEmpty. Operand 30172 states and 45773 transitions. [2021-11-07 14:57:52,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-07 14:57:52,039 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:57:52,040 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:57:52,072 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 14:57:52,267 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,SelfDestructingSolverStorable15 [2021-11-07 14:57:52,268 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-07 14:57:52,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:57:52,268 INFO L85 PathProgramCache]: Analyzing trace with hash -343030441, now seen corresponding path program 1 times [2021-11-07 14:57:52,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:57:52,268 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743998005] [2021-11-07 14:57:52,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:57:52,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:57:52,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:57:52,482 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-07 14:57:52,482 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:57:52,482 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743998005] [2021-11-07 14:57:52,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743998005] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 14:57:52,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592578095] [2021-11-07 14:57:52,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:57:52,483 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 14:57:52,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 14:57:52,484 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) [2021-11-07 14:57:52,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 14:57:58,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:57:58,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 2244 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-07 14:57:59,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 14:57:59,220 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-07 14:57:59,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 14:57:59,422 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-07 14:57:59,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592578095] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 14:57:59,423 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 14:57:59,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-07 14:57:59,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187502590] [2021-11-07 14:57:59,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-07 14:57:59,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 14:57:59,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:57:59,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 14:57:59,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-07 14:57:59,424 INFO L87 Difference]: Start difference. First operand 30172 states and 45773 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:58:00,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:58:00,635 INFO L93 Difference]: Finished difference Result 60472 states and 91838 transitions. [2021-11-07 14:58:00,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 14:58:00,635 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 0 states have call successors, (0), 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 140 [2021-11-07 14:58:00,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:58:00,694 INFO L225 Difference]: With dead ends: 60472 [2021-11-07 14:58:00,695 INFO L226 Difference]: Without dead ends: 30337 [2021-11-07 14:58:00,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 45.48ms TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2021-11-07 14:58:00,736 INFO L933 BasicCegarLoop]: 3735 mSDtfsCounter, 3659 mSDsluCounter, 7420 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 255.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3659 SdHoareTripleChecker+Valid, 11155 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.19ms SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 321.21ms IncrementalHoareTripleChecker+Time [2021-11-07 14:58:00,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3659 Valid, 11155 Invalid, 293 Unknown, 0 Unchecked, 12.19ms Time], IncrementalHoareTripleChecker [134 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 321.21ms Time] [2021-11-07 14:58:00,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30337 states. [2021-11-07 14:58:01,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30337 to 30337. [2021-11-07 14:58:01,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30337 states, 30314 states have (on average 1.5154054232367882) internal successors, (45938), 30336 states have internal predecessors, (45938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:58:01,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30337 states to 30337 states and 45938 transitions. [2021-11-07 14:58:01,550 INFO L78 Accepts]: Start accepts. Automaton has 30337 states and 45938 transitions. Word has length 140 [2021-11-07 14:58:01,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:58:01,550 INFO L470 AbstractCegarLoop]: Abstraction has 30337 states and 45938 transitions. [2021-11-07 14:58:01,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:58:01,550 INFO L276 IsEmpty]: Start isEmpty. Operand 30337 states and 45938 transitions. [2021-11-07 14:58:01,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-11-07 14:58:01,554 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:58:01,555 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:58:01,591 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-07 14:58:01,779 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,SelfDestructingSolverStorable16 [2021-11-07 14:58:01,780 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-07 14:58:01,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:58:01,780 INFO L85 PathProgramCache]: Analyzing trace with hash 786446609, now seen corresponding path program 2 times [2021-11-07 14:58:01,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:58:01,780 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385499311] [2021-11-07 14:58:01,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:58:01,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:58:02,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:58:02,133 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2021-11-07 14:58:02,134 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:58:02,134 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385499311] [2021-11-07 14:58:02,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385499311] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 14:58:02,134 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663370405] [2021-11-07 14:58:02,134 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 14:58:02,134 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 14:58:02,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 14:58:02,136 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) [2021-11-07 14:58:02,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 14:58:07,497 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-07 14:58:07,497 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 14:58:07,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 1919 conjuncts, 66 conjunts are in the unsatisfiable core [2021-11-07 14:58:07,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 14:58:08,000 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2021-11-07 14:58:08,000 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 14:58:08,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663370405] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:58:08,001 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 14:58:08,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [5] total 17 [2021-11-07 14:58:08,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296439958] [2021-11-07 14:58:08,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:58:08,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-07 14:58:08,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:58:08,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-07 14:58:08,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2021-11-07 14:58:08,003 INFO L87 Difference]: Start difference. First operand 30337 states and 45938 transitions. Second operand has 14 states, 14 states have (on average 9.714285714285714) internal successors, (136), 14 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:58:21,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:58:21,137 INFO L93 Difference]: Finished difference Result 341467 states and 522708 transitions. [2021-11-07 14:58:21,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-11-07 14:58:21,143 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 9.714285714285714) internal successors, (136), 14 states have internal predecessors, (136), 0 states have call successors, (0), 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 161 [2021-11-07 14:58:21,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:58:22,146 INFO L225 Difference]: With dead ends: 341467 [2021-11-07 14:58:22,146 INFO L226 Difference]: Without dead ends: 311222 [2021-11-07 14:58:22,245 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1757 ImplicationChecksByTransitivity, 1637.14ms TimeCoverageRelationStatistics Valid=1357, Invalid=4963, Unknown=0, NotChecked=0, Total=6320 [2021-11-07 14:58:22,245 INFO L933 BasicCegarLoop]: 6506 mSDtfsCounter, 133695 mSDsluCounter, 105036 mSDsCounter, 0 mSdLazyCounter, 655 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 420.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 133695 SdHoareTripleChecker+Valid, 111542 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 167.67ms SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 517.22ms IncrementalHoareTripleChecker+Time [2021-11-07 14:58:22,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133695 Valid, 111542 Invalid, 708 Unknown, 0 Unchecked, 167.67ms Time], IncrementalHoareTripleChecker [53 Valid, 655 Invalid, 0 Unknown, 0 Unchecked, 517.22ms Time] [2021-11-07 14:58:22,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311222 states. [2021-11-07 14:58:25,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311222 to 30541. [2021-11-07 14:58:25,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30541 states, 30518 states have (on average 1.5119601546628219) internal successors, (46142), 30540 states have internal predecessors, (46142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:58:26,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30541 states to 30541 states and 46142 transitions. [2021-11-07 14:58:26,052 INFO L78 Accepts]: Start accepts. Automaton has 30541 states and 46142 transitions. Word has length 161 [2021-11-07 14:58:26,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:58:26,052 INFO L470 AbstractCegarLoop]: Abstraction has 30541 states and 46142 transitions. [2021-11-07 14:58:26,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.714285714285714) internal successors, (136), 14 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:58:26,052 INFO L276 IsEmpty]: Start isEmpty. Operand 30541 states and 46142 transitions. [2021-11-07 14:58:26,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-11-07 14:58:26,079 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:58:26,079 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:58:26,111 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-07 14:58:26,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-07 14:58:26,280 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-07 14:58:26,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:58:26,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1018991725, now seen corresponding path program 1 times [2021-11-07 14:58:26,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:58:26,281 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525298687] [2021-11-07 14:58:26,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:58:26,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:58:26,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:58:26,549 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2021-11-07 14:58:26,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:58:26,551 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525298687] [2021-11-07 14:58:26,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525298687] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:58:26,551 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:58:26,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 14:58:26,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313479790] [2021-11-07 14:58:26,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:58:26,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 14:58:26,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:58:26,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 14:58:26,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 14:58:26,553 INFO L87 Difference]: Start difference. First operand 30541 states and 46142 transitions. Second operand has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:58:30,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:58:30,175 INFO L93 Difference]: Finished difference Result 88744 states and 134933 transitions. [2021-11-07 14:58:30,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 14:58:30,175 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 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 161 [2021-11-07 14:58:30,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:58:30,291 INFO L225 Difference]: With dead ends: 88744 [2021-11-07 14:58:30,292 INFO L226 Difference]: Without dead ends: 58295 [2021-11-07 14:58:30,322 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.85ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 14:58:30,323 INFO L933 BasicCegarLoop]: 7129 mSDtfsCounter, 11001 mSDsluCounter, 10385 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11001 SdHoareTripleChecker+Valid, 17514 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.51ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.19ms IncrementalHoareTripleChecker+Time [2021-11-07 14:58:30,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11001 Valid, 17514 Invalid, 45 Unknown, 0 Unchecked, 15.51ms Time], IncrementalHoareTripleChecker [5 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 36.19ms Time] [2021-11-07 14:58:30,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58295 states. [2021-11-07 14:58:32,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58295 to 30541. [2021-11-07 14:58:32,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30541 states, 30518 states have (on average 1.5107805229700504) internal successors, (46106), 30540 states have internal predecessors, (46106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:58:32,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30541 states to 30541 states and 46106 transitions. [2021-11-07 14:58:32,555 INFO L78 Accepts]: Start accepts. Automaton has 30541 states and 46106 transitions. Word has length 161 [2021-11-07 14:58:32,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:58:32,555 INFO L470 AbstractCegarLoop]: Abstraction has 30541 states and 46106 transitions. [2021-11-07 14:58:32,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:58:32,555 INFO L276 IsEmpty]: Start isEmpty. Operand 30541 states and 46106 transitions. [2021-11-07 14:58:32,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-07 14:58:32,559 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:58:32,560 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:58:32,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-07 14:58:32,561 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-07 14:58:32,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:58:32,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1204279584, now seen corresponding path program 1 times [2021-11-07 14:58:32,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:58:32,561 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398204841] [2021-11-07 14:58:32,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:58:32,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:58:32,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:58:32,777 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2021-11-07 14:58:32,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:58:32,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398204841] [2021-11-07 14:58:32,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398204841] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 14:58:32,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658509199] [2021-11-07 14:58:32,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:58:32,779 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 14:58:32,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 14:58:32,796 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 14:58:32,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-07 14:58:45,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:58:45,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 2392 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-07 14:58:45,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 14:58:45,959 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2021-11-07 14:58:45,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 14:58:46,312 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2021-11-07 14:58:46,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658509199] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 14:58:46,313 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 14:58:46,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 5] total 12 [2021-11-07 14:58:46,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991335269] [2021-11-07 14:58:46,314 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-07 14:58:46,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 14:58:46,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:58:46,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 14:58:46,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-11-07 14:58:46,317 INFO L87 Difference]: Start difference. First operand 30541 states and 46106 transitions. Second operand has 12 states, 12 states have (on average 12.333333333333334) internal successors, (148), 12 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:58:49,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:58:49,746 INFO L93 Difference]: Finished difference Result 61210 states and 92507 transitions. [2021-11-07 14:58:49,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-07 14:58:49,747 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 12.333333333333334) internal successors, (148), 12 states have internal predecessors, (148), 0 states have call successors, (0), 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 167 [2021-11-07 14:58:49,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:58:49,802 INFO L225 Difference]: With dead ends: 61210 [2021-11-07 14:58:49,802 INFO L226 Difference]: Without dead ends: 30709 [2021-11-07 14:58:49,825 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 327 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 194.42ms TimeCoverageRelationStatistics Valid=78, Invalid=132, Unknown=0, NotChecked=0, Total=210 [2021-11-07 14:58:49,827 INFO L933 BasicCegarLoop]: 3729 mSDtfsCounter, 3665 mSDsluCounter, 18465 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 928.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3665 SdHoareTripleChecker+Valid, 22194 SdHoareTripleChecker+Invalid, 789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 20.26ms SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1061.33ms IncrementalHoareTripleChecker+Time [2021-11-07 14:58:49,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3665 Valid, 22194 Invalid, 789 Unknown, 0 Unchecked, 20.26ms Time], IncrementalHoareTripleChecker [222 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 1061.33ms Time] [2021-11-07 14:58:49,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30709 states. [2021-11-07 14:58:51,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30709 to 30709. [2021-11-07 14:58:51,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30709 states, 30686 states have (on average 1.5081796258880271) internal successors, (46280), 30708 states have internal predecessors, (46280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:58:51,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30709 states to 30709 states and 46280 transitions. [2021-11-07 14:58:51,911 INFO L78 Accepts]: Start accepts. Automaton has 30709 states and 46280 transitions. Word has length 167 [2021-11-07 14:58:51,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:58:51,912 INFO L470 AbstractCegarLoop]: Abstraction has 30709 states and 46280 transitions. [2021-11-07 14:58:51,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.333333333333334) internal successors, (148), 12 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:58:51,912 INFO L276 IsEmpty]: Start isEmpty. Operand 30709 states and 46280 transitions. [2021-11-07 14:58:51,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-11-07 14:58:51,916 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:58:51,916 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:58:51,966 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-07 14:58:52,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 14:58:52,131 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-07 14:58:52,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:58:52,132 INFO L85 PathProgramCache]: Analyzing trace with hash -209660256, now seen corresponding path program 2 times [2021-11-07 14:58:52,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:58:52,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295778270] [2021-11-07 14:58:52,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:58:52,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:58:52,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:58:52,433 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-11-07 14:58:52,433 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:58:52,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295778270] [2021-11-07 14:58:52,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295778270] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 14:58:52,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883460727] [2021-11-07 14:58:52,434 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 14:58:52,434 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 14:58:52,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 14:58:52,435 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 14:58:52,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-07 14:59:18,362 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 14:59:18,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 14:59:18,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 2464 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-07 14:59:18,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 14:59:18,729 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-11-07 14:59:18,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 14:59:19,106 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-11-07 14:59:19,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883460727] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 14:59:19,107 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 14:59:19,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2021-11-07 14:59:19,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752926519] [2021-11-07 14:59:19,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-07 14:59:19,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-07 14:59:19,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:59:19,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-07 14:59:19,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2021-11-07 14:59:19,108 INFO L87 Difference]: Start difference. First operand 30709 states and 46280 transitions. Second operand has 17 states, 17 states have (on average 8.941176470588236) internal successors, (152), 17 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:59:29,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:59:29,816 INFO L93 Difference]: Finished difference Result 61931 states and 93648 transitions. [2021-11-07 14:59:29,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-07 14:59:29,817 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 8.941176470588236) internal successors, (152), 17 states have internal predecessors, (152), 0 states have call successors, (0), 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 179 [2021-11-07 14:59:29,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:59:29,870 INFO L225 Difference]: With dead ends: 61931 [2021-11-07 14:59:29,870 INFO L226 Difference]: Without dead ends: 31291 [2021-11-07 14:59:29,890 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 352 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1632.78ms TimeCoverageRelationStatistics Valid=156, Invalid=350, Unknown=0, NotChecked=0, Total=506 [2021-11-07 14:59:29,892 INFO L933 BasicCegarLoop]: 3735 mSDtfsCounter, 0 mSDsluCounter, 29544 mSDsCounter, 0 mSdLazyCounter, 663 mSolverCounterSat, 510 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6560.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 33279 SdHoareTripleChecker+Invalid, 1173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.00ms SdHoareTripleChecker+Time, 510 IncrementalHoareTripleChecker+Valid, 663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6840.91ms IncrementalHoareTripleChecker+Time [2021-11-07 14:59:29,892 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 33279 Invalid, 1173 Unknown, 0 Unchecked, 19.00ms Time], IncrementalHoareTripleChecker [510 Valid, 663 Invalid, 0 Unknown, 0 Unchecked, 6840.91ms Time] [2021-11-07 14:59:29,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31291 states. [2021-11-07 14:59:31,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31291 to 31291. [2021-11-07 14:59:31,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31291 states, 31268 states have (on average 1.4987207368555713) internal successors, (46862), 31290 states have internal predecessors, (46862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:59:31,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31291 states to 31291 states and 46862 transitions. [2021-11-07 14:59:31,973 INFO L78 Accepts]: Start accepts. Automaton has 31291 states and 46862 transitions. Word has length 179 [2021-11-07 14:59:31,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:59:31,973 INFO L470 AbstractCegarLoop]: Abstraction has 31291 states and 46862 transitions. [2021-11-07 14:59:31,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 8.941176470588236) internal successors, (152), 17 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:59:31,974 INFO L276 IsEmpty]: Start isEmpty. Operand 31291 states and 46862 transitions. [2021-11-07 14:59:31,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-11-07 14:59:31,978 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:59:31,979 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:59:32,057 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-07 14:59:32,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 14:59:32,188 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-07 14:59:32,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:59:32,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1923038560, now seen corresponding path program 3 times [2021-11-07 14:59:32,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:59:32,189 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128012493] [2021-11-07 14:59:32,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:59:32,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:59:32,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:59:32,562 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2021-11-07 14:59:32,563 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:59:32,563 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128012493] [2021-11-07 14:59:32,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128012493] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:59:32,563 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:59:32,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-07 14:59:32,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120540219] [2021-11-07 14:59:32,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:59:32,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-07 14:59:32,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:59:32,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-07 14:59:32,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2021-11-07 14:59:32,564 INFO L87 Difference]: Start difference. First operand 31291 states and 46862 transitions. Second operand has 16 states, 16 states have (on average 8.625) internal successors, (138), 16 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:59:34,579 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 14:59:36,605 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 14:59:48,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 14:59:48,296 INFO L93 Difference]: Finished difference Result 153850 states and 231268 transitions. [2021-11-07 14:59:48,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-07 14:59:48,296 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 8.625) internal successors, (138), 16 states have internal predecessors, (138), 0 states have call successors, (0), 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 185 [2021-11-07 14:59:48,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 14:59:48,567 INFO L225 Difference]: With dead ends: 153850 [2021-11-07 14:59:48,567 INFO L226 Difference]: Without dead ends: 122533 [2021-11-07 14:59:48,617 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1081 ImplicationChecksByTransitivity, 1460.02ms TimeCoverageRelationStatistics Valid=1001, Invalid=2905, Unknown=0, NotChecked=0, Total=3906 [2021-11-07 14:59:48,618 INFO L933 BasicCegarLoop]: 3890 mSDtfsCounter, 122711 mSDsluCounter, 68509 mSDsCounter, 0 mSdLazyCounter, 1273 mSolverCounterSat, 52 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4897.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 122711 SdHoareTripleChecker+Valid, 72399 SdHoareTripleChecker+Invalid, 1327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 128.00ms SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1273 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5205.44ms IncrementalHoareTripleChecker+Time [2021-11-07 14:59:48,618 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122711 Valid, 72399 Invalid, 1327 Unknown, 0 Unchecked, 128.00ms Time], IncrementalHoareTripleChecker [52 Valid, 1273 Invalid, 2 Unknown, 0 Unchecked, 5205.44ms Time] [2021-11-07 14:59:48,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122533 states. [2021-11-07 14:59:50,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122533 to 15356. [2021-11-07 14:59:50,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15356 states, 15333 states have (on average 1.5055109893693341) internal successors, (23084), 15355 states have internal predecessors, (23084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:59:50,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15356 states to 15356 states and 23084 transitions. [2021-11-07 14:59:50,804 INFO L78 Accepts]: Start accepts. Automaton has 15356 states and 23084 transitions. Word has length 185 [2021-11-07 14:59:50,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 14:59:50,804 INFO L470 AbstractCegarLoop]: Abstraction has 15356 states and 23084 transitions. [2021-11-07 14:59:50,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.625) internal successors, (138), 16 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 14:59:50,805 INFO L276 IsEmpty]: Start isEmpty. Operand 15356 states and 23084 transitions. [2021-11-07 14:59:50,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-11-07 14:59:50,808 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 14:59:50,809 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 14:59:50,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-07 14:59:50,809 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 39 more)] === [2021-11-07 14:59:50,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 14:59:50,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1285573462, now seen corresponding path program 1 times [2021-11-07 14:59:50,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 14:59:50,810 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764788897] [2021-11-07 14:59:50,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 14:59:50,810 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 14:59:50,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 14:59:50,996 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2021-11-07 14:59:50,996 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 14:59:50,996 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764788897] [2021-11-07 14:59:50,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764788897] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 14:59:50,997 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 14:59:50,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 14:59:50,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958582735] [2021-11-07 14:59:50,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 14:59:50,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 14:59:50,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 14:59:50,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 14:59:50,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 14:59:50,998 INFO L87 Difference]: Start difference. First operand 15356 states and 23084 transitions. Second operand has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)