./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-43_2a-drivers--net--ethernet--sis--sis900.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-43_2a-drivers--net--ethernet--sis--sis900.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 8a589a2971b8b26c84b19dd15ca599e2c024bda8a102f55ffa19d72f19d12686 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 15:53:30,115 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 15:53:30,122 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 15:53:30,160 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 15:53:30,160 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 15:53:30,163 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 15:53:30,164 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 15:53:30,168 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 15:53:30,170 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 15:53:30,173 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 15:53:30,174 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 15:53:30,175 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 15:53:30,175 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 15:53:30,177 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 15:53:30,178 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 15:53:30,181 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 15:53:30,182 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 15:53:30,182 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 15:53:30,186 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 15:53:30,189 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 15:53:30,193 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 15:53:30,194 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 15:53:30,194 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 15:53:30,195 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 15:53:30,197 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 15:53:30,197 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 15:53:30,200 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 15:53:30,201 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 15:53:30,202 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 15:53:30,202 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 15:53:30,202 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 15:53:30,203 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 15:53:30,204 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 15:53:30,205 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 15:53:30,205 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 15:53:30,206 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 15:53:30,206 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 15:53:30,206 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 15:53:30,207 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 15:53:30,207 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 15:53:30,208 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 15:53:30,208 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 15:53:30,229 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 15:53:30,230 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 15:53:30,230 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 15:53:30,230 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 15:53:30,231 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 15:53:30,231 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 15:53:30,231 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 15:53:30,231 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 15:53:30,231 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 15:53:30,231 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 15:53:30,232 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 15:53:30,232 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 15:53:30,232 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 15:53:30,232 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 15:53:30,232 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 15:53:30,232 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 15:53:30,233 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 15:53:30,233 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 15:53:30,233 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 15:53:30,233 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 15:53:30,233 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 15:53:30,233 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 15:53:30,233 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 15:53:30,234 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 15:53:30,234 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 15:53:30,234 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 15:53:30,234 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 15:53:30,239 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 15:53:30,240 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 15:53:30,240 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8a589a2971b8b26c84b19dd15ca599e2c024bda8a102f55ffa19d72f19d12686 [2021-11-07 15:53:30,419 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 15:53:30,433 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 15:53:30,435 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 15:53:30,436 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 15:53:30,437 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 15:53:30,438 INFO L432 ainManager$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-43_2a-drivers--net--ethernet--sis--sis900.ko-entry_point.cil.out.i [2021-11-07 15:53:30,477 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be6e6407a/f227768d07614bd88d75115930667245/FLAG977140150 [2021-11-07 15:53:31,057 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 15:53:31,058 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--sis--sis900.ko-entry_point.cil.out.i [2021-11-07 15:53:31,098 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be6e6407a/f227768d07614bd88d75115930667245/FLAG977140150 [2021-11-07 15:53:31,247 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be6e6407a/f227768d07614bd88d75115930667245 [2021-11-07 15:53:31,249 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 15:53:31,250 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 15:53:31,253 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 15:53:31,253 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 15:53:31,255 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 15:53:31,255 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:53:31" (1/1) ... [2021-11-07 15:53:31,257 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f0e4b48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:53:31, skipping insertion in model container [2021-11-07 15:53:31,257 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:53:31" (1/1) ... [2021-11-07 15:53:31,262 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 15:53:31,360 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 15:53:32,506 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-43_2a-drivers--net--ethernet--sis--sis900.ko-entry_point.cil.out.i[280896,280909] [2021-11-07 15:53:32,548 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 15:53:32,597 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 15:53:32,852 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-43_2a-drivers--net--ethernet--sis--sis900.ko-entry_point.cil.out.i[280896,280909] [2021-11-07 15:53:32,859 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 15:53:32,977 INFO L208 MainTranslator]: Completed translation [2021-11-07 15:53:32,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:53:32 WrapperNode [2021-11-07 15:53:32,978 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 15:53:32,979 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 15:53:32,979 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 15:53:32,980 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 15:53:32,984 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:53:32" (1/1) ... [2021-11-07 15:53:33,050 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:53:32" (1/1) ... [2021-11-07 15:53:33,902 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 15:53:33,903 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 15:53:33,903 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 15:53:33,903 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 15:53:33,909 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:53:32" (1/1) ... [2021-11-07 15:53:33,909 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:53:32" (1/1) ... [2021-11-07 15:53:34,062 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:53:32" (1/1) ... [2021-11-07 15:53:34,063 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:53:32" (1/1) ... [2021-11-07 15:53:34,420 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:53:32" (1/1) ... [2021-11-07 15:53:34,516 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:53:32" (1/1) ... [2021-11-07 15:53:34,639 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:53:32" (1/1) ... [2021-11-07 15:53:34,763 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 15:53:34,764 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 15:53:34,764 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 15:53:34,764 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 15:53:34,765 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:53:32" (1/1) ... [2021-11-07 15:53:34,770 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 15:53:34,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 15:53:34,791 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 15:53:34,798 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 15:53:34,828 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 15:53:34,829 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 15:53:34,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 15:53:34,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 15:53:34,835 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 15:53:34,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 15:53:34,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 15:53:34,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 15:53:34,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 15:53:34,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 15:53:34,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 15:53:44,288 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 15:53:44,288 INFO L299 CfgBuilder]: Removed 8337 assume(true) statements. [2021-11-07 15:53:44,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:53:44 BoogieIcfgContainer [2021-11-07 15:53:44,293 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 15:53:44,294 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 15:53:44,294 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 15:53:44,296 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 15:53:44,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:53:31" (1/3) ... [2021-11-07 15:53:44,297 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3251ef7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:53:44, skipping insertion in model container [2021-11-07 15:53:44,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:53:32" (2/3) ... [2021-11-07 15:53:44,297 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3251ef7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:53:44, skipping insertion in model container [2021-11-07 15:53:44,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:53:44" (3/3) ... [2021-11-07 15:53:44,298 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--sis--sis900.ko-entry_point.cil.out.i [2021-11-07 15:53:44,301 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 15:53:44,301 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2021-11-07 15:53:44,343 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 15:53:44,349 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 15:53:44,350 INFO L340 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2021-11-07 15:53:44,423 INFO L276 IsEmpty]: Start isEmpty. Operand has 6378 states, 6358 states have (on average 1.2684806542938032) internal successors, (8065), 6377 states have internal predecessors, (8065), 0 states have call successors, (0), 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 15:53:44,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 15:53:44,442 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:53:44,442 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 15:53:44,443 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 15:53:44,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:53:44,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1268229892, now seen corresponding path program 1 times [2021-11-07 15:53:44,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:53:44,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955610027] [2021-11-07 15:53:44,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:53:44,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:53:44,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:53:44,861 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 15:53:44,861 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:53:44,875 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955610027] [2021-11-07 15:53:44,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955610027] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:53:44,876 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:53:44,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 15:53:44,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013965984] [2021-11-07 15:53:44,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:53:44,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 15:53:44,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:53:44,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 15:53:44,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 15:53:44,925 INFO L87 Difference]: Start difference. First operand has 6378 states, 6358 states have (on average 1.2684806542938032) internal successors, (8065), 6377 states have internal predecessors, (8065), 0 states have call successors, (0), 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 31.5) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:53:45,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:53:45,159 INFO L93 Difference]: Finished difference Result 12752 states and 16125 transitions. [2021-11-07 15:53:45,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 15:53:45,161 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 15:53:45,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:53:45,193 INFO L225 Difference]: With dead ends: 12752 [2021-11-07 15:53:45,194 INFO L226 Difference]: Without dead ends: 6324 [2021-11-07 15:53:45,213 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.04ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 15:53:45,223 INFO L933 BasicCegarLoop]: 7995 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, 7995 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 33.46ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-07 15:53:45,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 7995 Invalid, 0 Unknown, 0 Unchecked, 33.46ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-07 15:53:45,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6324 states. [2021-11-07 15:53:45,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6324 to 6324. [2021-11-07 15:53:45,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6324 states, 6305 states have (on average 1.251704996034893) internal successors, (7892), 6323 states have internal predecessors, (7892), 0 states have call successors, (0), 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 15:53:45,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6324 states to 6324 states and 7892 transitions. [2021-11-07 15:53:45,410 INFO L78 Accepts]: Start accepts. Automaton has 6324 states and 7892 transitions. Word has length 63 [2021-11-07 15:53:45,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:53:45,411 INFO L470 AbstractCegarLoop]: Abstraction has 6324 states and 7892 transitions. [2021-11-07 15:53:45,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:53:45,412 INFO L276 IsEmpty]: Start isEmpty. Operand 6324 states and 7892 transitions. [2021-11-07 15:53:45,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 15:53:45,415 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:53:45,416 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 15:53:45,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 15:53:45,416 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 15:53:45,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:53:45,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1356124486, now seen corresponding path program 1 times [2021-11-07 15:53:45,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:53:45,418 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146368202] [2021-11-07 15:53:45,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:53:45,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:53:45,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:53:45,648 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 15:53:45,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:53:45,649 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146368202] [2021-11-07 15:53:45,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146368202] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:53:45,649 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:53:45,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 15:53:45,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133695421] [2021-11-07 15:53:45,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:53:45,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 15:53:45,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:53:45,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 15:53:45,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 15:53:45,652 INFO L87 Difference]: Start difference. First operand 6324 states and 7892 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:53:46,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:53:46,460 INFO L93 Difference]: Finished difference Result 29783 states and 37035 transitions. [2021-11-07 15:53:46,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 15:53:46,461 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-07 15:53:46,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:53:46,538 INFO L225 Difference]: With dead ends: 29783 [2021-11-07 15:53:46,539 INFO L226 Difference]: Without dead ends: 23498 [2021-11-07 15:53:46,554 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.14ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 15:53:46,555 INFO L933 BasicCegarLoop]: 21503 mSDtfsCounter, 14501 mSDsluCounter, 16073 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14501 SdHoareTripleChecker+Valid, 37576 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 56.70ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 62.37ms IncrementalHoareTripleChecker+Time [2021-11-07 15:53:46,555 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14501 Valid, 37576 Invalid, 68 Unknown, 0 Unchecked, 56.70ms Time], IncrementalHoareTripleChecker [11 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 62.37ms Time] [2021-11-07 15:53:46,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23498 states. [2021-11-07 15:53:46,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23498 to 11833. [2021-11-07 15:53:46,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11833 states, 11814 states have (on average 1.2458947012019637) internal successors, (14719), 11832 states have internal predecessors, (14719), 0 states have call successors, (0), 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 15:53:46,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11833 states to 11833 states and 14719 transitions. [2021-11-07 15:53:46,869 INFO L78 Accepts]: Start accepts. Automaton has 11833 states and 14719 transitions. Word has length 63 [2021-11-07 15:53:46,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:53:46,870 INFO L470 AbstractCegarLoop]: Abstraction has 11833 states and 14719 transitions. [2021-11-07 15:53:46,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:53:46,870 INFO L276 IsEmpty]: Start isEmpty. Operand 11833 states and 14719 transitions. [2021-11-07 15:53:46,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-07 15:53:46,873 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:53:46,873 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 15:53:46,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 15:53:46,874 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 15:53:46,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:53:46,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1471497829, now seen corresponding path program 1 times [2021-11-07 15:53:46,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:53:46,875 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585725624] [2021-11-07 15:53:46,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:53:46,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:53:46,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:53:46,995 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 15:53:46,996 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:53:47,000 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585725624] [2021-11-07 15:53:47,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585725624] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:53:47,001 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:53:47,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 15:53:47,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277658615] [2021-11-07 15:53:47,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:53:47,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 15:53:47,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:53:47,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 15:53:47,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 15:53:47,003 INFO L87 Difference]: Start difference. First operand 11833 states and 14719 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:53:47,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:53:47,933 INFO L93 Difference]: Finished difference Result 57328 states and 71172 transitions. [2021-11-07 15:53:47,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 15:53:47,933 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-07 15:53:47,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:53:48,032 INFO L225 Difference]: With dead ends: 57328 [2021-11-07 15:53:48,032 INFO L226 Difference]: Without dead ends: 45534 [2021-11-07 15:53:48,064 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.34ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 15:53:48,065 INFO L933 BasicCegarLoop]: 14718 mSDtfsCounter, 21293 mSDsluCounter, 15702 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 21293 SdHoareTripleChecker+Valid, 30420 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 36.93ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49.98ms IncrementalHoareTripleChecker+Time [2021-11-07 15:53:48,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21293 Valid, 30420 Invalid, 60 Unknown, 0 Unchecked, 36.93ms Time], IncrementalHoareTripleChecker [13 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 49.98ms Time] [2021-11-07 15:53:48,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45534 states. [2021-11-07 15:53:48,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45534 to 23406. [2021-11-07 15:53:48,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23406 states, 23387 states have (on average 1.2452644631632959) internal successors, (29123), 23405 states have internal predecessors, (29123), 0 states have call successors, (0), 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 15:53:48,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23406 states to 23406 states and 29123 transitions. [2021-11-07 15:53:48,766 INFO L78 Accepts]: Start accepts. Automaton has 23406 states and 29123 transitions. Word has length 64 [2021-11-07 15:53:48,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:53:48,767 INFO L470 AbstractCegarLoop]: Abstraction has 23406 states and 29123 transitions. [2021-11-07 15:53:48,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:53:48,769 INFO L276 IsEmpty]: Start isEmpty. Operand 23406 states and 29123 transitions. [2021-11-07 15:53:48,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-07 15:53:48,772 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:53:48,773 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 15:53:48,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 15:53:48,773 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 15:53:48,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:53:48,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1146130534, now seen corresponding path program 1 times [2021-11-07 15:53:48,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:53:48,774 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851962495] [2021-11-07 15:53:48,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:53:48,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:53:48,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:53:48,954 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 15:53:48,955 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:53:48,955 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851962495] [2021-11-07 15:53:48,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851962495] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:53:48,955 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:53:48,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 15:53:48,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770500139] [2021-11-07 15:53:48,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:53:48,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 15:53:48,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:53:48,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 15:53:48,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 15:53:48,957 INFO L87 Difference]: Start difference. First operand 23406 states and 29123 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:53:50,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:53:50,790 INFO L93 Difference]: Finished difference Result 113912 states and 141459 transitions. [2021-11-07 15:53:50,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 15:53:50,790 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-07 15:53:50,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:53:51,009 INFO L225 Difference]: With dead ends: 113912 [2021-11-07 15:53:51,010 INFO L226 Difference]: Without dead ends: 90545 [2021-11-07 15:53:51,079 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.03ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 15:53:51,081 INFO L933 BasicCegarLoop]: 14717 mSDtfsCounter, 21299 mSDsluCounter, 15702 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 21299 SdHoareTripleChecker+Valid, 30419 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 38.90ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 59.53ms IncrementalHoareTripleChecker+Time [2021-11-07 15:53:51,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21299 Valid, 30419 Invalid, 60 Unknown, 0 Unchecked, 38.90ms Time], IncrementalHoareTripleChecker [13 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 59.53ms Time] [2021-11-07 15:53:51,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90545 states. [2021-11-07 15:53:52,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90545 to 46372. [2021-11-07 15:53:52,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46372 states, 46353 states have (on average 1.24447177097491) internal successors, (57685), 46371 states have internal predecessors, (57685), 0 states have call successors, (0), 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 15:53:52,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46372 states to 46372 states and 57685 transitions. [2021-11-07 15:53:52,598 INFO L78 Accepts]: Start accepts. Automaton has 46372 states and 57685 transitions. Word has length 65 [2021-11-07 15:53:52,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:53:52,598 INFO L470 AbstractCegarLoop]: Abstraction has 46372 states and 57685 transitions. [2021-11-07 15:53:52,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:53:52,599 INFO L276 IsEmpty]: Start isEmpty. Operand 46372 states and 57685 transitions. [2021-11-07 15:53:52,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-07 15:53:52,602 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:53:52,602 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 15:53:52,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 15:53:52,602 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 15:53:52,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:53:52,603 INFO L85 PathProgramCache]: Analyzing trace with hash 350321661, now seen corresponding path program 1 times [2021-11-07 15:53:52,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:53:52,603 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830098239] [2021-11-07 15:53:52,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:53:52,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:53:52,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:53:52,917 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 15:53:52,918 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:53:52,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830098239] [2021-11-07 15:53:52,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830098239] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:53:52,918 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:53:52,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 15:53:52,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920029175] [2021-11-07 15:53:52,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:53:52,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 15:53:52,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:53:52,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 15:53:52,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 15:53:52,920 INFO L87 Difference]: Start difference. First operand 46372 states and 57685 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:53:56,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:53:56,942 INFO L93 Difference]: Finished difference Result 226536 states and 281287 transitions. [2021-11-07 15:53:56,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 15:53:56,943 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-07 15:53:56,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:53:57,374 INFO L225 Difference]: With dead ends: 226536 [2021-11-07 15:53:57,374 INFO L226 Difference]: Without dead ends: 180203 [2021-11-07 15:53:57,481 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.84ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 15:53:57,482 INFO L933 BasicCegarLoop]: 14716 mSDtfsCounter, 21305 mSDsluCounter, 15702 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 65.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 21305 SdHoareTripleChecker+Valid, 30418 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 32.46ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 78.01ms IncrementalHoareTripleChecker+Time [2021-11-07 15:53:57,482 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21305 Valid, 30418 Invalid, 60 Unknown, 0 Unchecked, 32.46ms Time], IncrementalHoareTripleChecker [13 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 78.01ms Time] [2021-11-07 15:53:57,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180203 states. [2021-11-07 15:54:00,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180203 to 91943. [2021-11-07 15:54:00,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91943 states, 91924 states have (on average 1.243581654410165) internal successors, (114315), 91942 states have internal predecessors, (114315), 0 states have call successors, (0), 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 15:54:01,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91943 states to 91943 states and 114315 transitions. [2021-11-07 15:54:01,064 INFO L78 Accepts]: Start accepts. Automaton has 91943 states and 114315 transitions. Word has length 66 [2021-11-07 15:54:01,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:54:01,065 INFO L470 AbstractCegarLoop]: Abstraction has 91943 states and 114315 transitions. [2021-11-07 15:54:01,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:54:01,065 INFO L276 IsEmpty]: Start isEmpty. Operand 91943 states and 114315 transitions. [2021-11-07 15:54:01,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-07 15:54:01,070 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:54:01,070 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-07 15:54:01,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 15:54:01,070 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-07 15:54:01,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:54:01,071 INFO L85 PathProgramCache]: Analyzing trace with hash 623056557, now seen corresponding path program 1 times [2021-11-07 15:54:01,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:54:01,071 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360083585] [2021-11-07 15:54:01,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:54:01,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:54:01,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:54:01,187 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 15:54:01,188 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:54:01,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360083585] [2021-11-07 15:54:01,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360083585] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:54:01,188 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:54:01,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 15:54:01,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436892943] [2021-11-07 15:54:01,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:54:01,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 15:54:01,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:54:01,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 15:54:01,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 15:54:01,190 INFO L87 Difference]: Start difference. First operand 91943 states and 114315 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:54:07,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:54:07,305 INFO L93 Difference]: Finished difference Result 318463 states and 395587 transitions. [2021-11-07 15:54:07,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 15:54:07,306 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-07 15:54:07,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:54:07,984 INFO L225 Difference]: With dead ends: 318463 [2021-11-07 15:54:07,984 INFO L226 Difference]: Without dead ends: 226559 [2021-11-07 15:54:08,165 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 16.77ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 15:54:08,166 INFO L933 BasicCegarLoop]: 15466 mSDtfsCounter, 34956 mSDsluCounter, 31893 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 89.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 34956 SdHoareTripleChecker+Valid, 47359 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 49.28ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 112.53ms IncrementalHoareTripleChecker+Time [2021-11-07 15:54:08,166 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34956 Valid, 47359 Invalid, 143 Unknown, 0 Unchecked, 49.28ms Time], IncrementalHoareTripleChecker [32 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 112.53ms Time] [2021-11-07 15:54:08,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226559 states.