./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--scsi--advansys.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--advansys.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 7aeec7696a529cfd4fe4dd2b18db6cb21f16cff1a7793506058657f67fba4ef5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 17:42:31,918 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 17:42:31,923 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 17:42:31,953 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 17:42:31,954 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 17:42:31,962 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 17:42:31,963 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 17:42:31,967 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 17:42:31,968 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 17:42:31,972 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 17:42:31,972 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 17:42:31,973 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 17:42:31,973 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 17:42:31,975 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 17:42:31,976 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 17:42:31,981 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 17:42:31,982 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 17:42:31,982 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 17:42:31,984 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 17:42:31,986 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 17:42:31,987 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 17:42:31,988 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 17:42:31,990 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 17:42:31,990 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 17:42:31,994 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 17:42:31,996 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 17:42:31,997 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 17:42:31,997 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 17:42:31,998 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 17:42:31,999 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 17:42:31,999 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 17:42:32,000 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 17:42:32,000 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 17:42:32,001 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 17:42:32,001 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 17:42:32,002 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 17:42:32,002 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 17:42:32,003 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 17:42:32,003 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 17:42:32,003 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 17:42:32,004 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 17:42:32,005 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 17:42:32,024 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 17:42:32,025 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 17:42:32,025 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 17:42:32,025 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 17:42:32,026 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 17:42:32,026 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 17:42:32,026 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 17:42:32,027 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 17:42:32,027 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 17:42:32,027 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 17:42:32,028 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 17:42:32,028 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 17:42:32,028 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 17:42:32,028 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 17:42:32,028 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 17:42:32,028 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 17:42:32,028 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 17:42:32,028 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 17:42:32,029 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 17:42:32,029 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 17:42:32,029 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 17:42:32,029 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 17:42:32,029 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 17:42:32,029 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 17:42:32,029 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 17:42:32,030 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 17:42:32,030 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 17:42:32,031 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 17:42:32,031 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 17:42:32,031 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7aeec7696a529cfd4fe4dd2b18db6cb21f16cff1a7793506058657f67fba4ef5 [2021-11-06 17:42:32,221 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 17:42:32,266 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 17:42:32,268 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 17:42:32,269 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 17:42:32,270 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 17:42:32,271 INFO L432 ainManager$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--scsi--advansys.ko-entry_point.cil.out.i [2021-11-06 17:42:32,312 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a36b61fed/58c2bcf9a2184b7492372443d2d2ea96/FLAG8a857337d [2021-11-06 17:42:32,979 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 17:42:32,980 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--scsi--advansys.ko-entry_point.cil.out.i [2021-11-06 17:42:33,031 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a36b61fed/58c2bcf9a2184b7492372443d2d2ea96/FLAG8a857337d [2021-11-06 17:42:33,066 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a36b61fed/58c2bcf9a2184b7492372443d2d2ea96 [2021-11-06 17:42:33,068 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 17:42:33,069 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 17:42:33,072 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 17:42:33,072 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 17:42:33,074 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 17:42:33,075 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 05:42:33" (1/1) ... [2021-11-06 17:42:33,076 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6230ae37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:42:33, skipping insertion in model container [2021-11-06 17:42:33,077 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 05:42:33" (1/1) ... [2021-11-06 17:42:33,081 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 17:42:33,217 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 17:42:35,024 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--scsi--advansys.ko-entry_point.cil.out.i[434068,434081] [2021-11-06 17:42:35,081 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 17:42:35,111 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 17:42:35,565 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--scsi--advansys.ko-entry_point.cil.out.i[434068,434081] [2021-11-06 17:42:35,569 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 17:42:35,641 INFO L208 MainTranslator]: Completed translation [2021-11-06 17:42:35,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:42:35 WrapperNode [2021-11-06 17:42:35,642 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 17:42:35,643 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 17:42:35,644 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 17:42:35,644 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 17:42:35,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:42:35" (1/1) ... [2021-11-06 17:42:35,781 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:42:35" (1/1) ... [2021-11-06 17:42:38,962 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 17:42:38,963 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 17:42:38,963 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 17:42:38,963 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 17:42:38,969 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:42:35" (1/1) ... [2021-11-06 17:42:38,970 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:42:35" (1/1) ... [2021-11-06 17:42:39,802 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:42:35" (1/1) ... [2021-11-06 17:42:39,803 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:42:35" (1/1) ... [2021-11-06 17:42:41,165 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:42:35" (1/1) ... [2021-11-06 17:42:41,415 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:42:35" (1/1) ... [2021-11-06 17:42:41,651 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:42:35" (1/1) ... [2021-11-06 17:42:42,194 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 17:42:42,195 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 17:42:42,196 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 17:42:42,196 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 17:42:42,207 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:42:35" (1/1) ... [2021-11-06 17:42:42,212 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 17:42:42,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 17:42:42,232 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-06 17:42:42,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-06 17:42:42,259 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-06 17:42:42,260 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 17:42:42,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 17:42:42,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 17:42:42,260 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 17:42:42,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 17:42:42,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 17:42:42,260 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 17:42:42,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 17:42:42,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 17:42:42,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 17:42:42,261 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 17:42:42,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 17:42:42,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 17:42:42,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 17:42:42,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 17:49:08,131 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 17:49:08,131 INFO L299 CfgBuilder]: Removed 30775 assume(true) statements. [2021-11-06 17:49:08,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 05:49:08 BoogieIcfgContainer [2021-11-06 17:49:08,147 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 17:49:08,149 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 17:49:08,149 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 17:49:08,151 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 17:49:08,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 05:42:33" (1/3) ... [2021-11-06 17:49:08,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d4ead76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 05:49:08, skipping insertion in model container [2021-11-06 17:49:08,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:42:35" (2/3) ... [2021-11-06 17:49:08,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d4ead76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 05:49:08, skipping insertion in model container [2021-11-06 17:49:08,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 05:49:08" (3/3) ... [2021-11-06 17:49:08,153 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--advansys.ko-entry_point.cil.out.i [2021-11-06 17:49:08,156 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 17:49:08,156 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-11-06 17:49:08,243 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 17:49:08,246 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-06 17:49:08,247 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-11-06 17:49:08,448 INFO L276 IsEmpty]: Start isEmpty. Operand has 26230 states, 26222 states have (on average 1.3154603005110213) internal successors, (34494), 26229 states have internal predecessors, (34494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:49:08,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-06 17:49:08,454 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:49:08,455 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:49:08,455 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-06 17:49:08,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:49:08,458 INFO L85 PathProgramCache]: Analyzing trace with hash -417480011, now seen corresponding path program 1 times [2021-11-06 17:49:08,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:49:08,464 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38277565] [2021-11-06 17:49:08,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:49:08,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:49:08,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:49:08,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:49:08,957 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:49:08,957 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38277565] [2021-11-06 17:49:08,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38277565] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:49:08,958 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:49:08,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 17:49:08,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322842890] [2021-11-06 17:49:08,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 17:49:08,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:49:08,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 17:49:08,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 17:49:09,010 INFO L87 Difference]: Start difference. First operand has 26230 states, 26222 states have (on average 1.3154603005110213) internal successors, (34494), 26229 states have internal predecessors, (34494), 0 states have call successors, (0), 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 22.5) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:49:09,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:49:09,414 INFO L93 Difference]: Finished difference Result 50824 states and 66807 transitions. [2021-11-06 17:49:09,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 17:49:09,416 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2021-11-06 17:49:09,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:49:09,503 INFO L225 Difference]: With dead ends: 50824 [2021-11-06 17:49:09,503 INFO L226 Difference]: Without dead ends: 24240 [2021-11-06 17:49:09,552 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 17:49:09,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24240 states. [2021-11-06 17:49:10,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24240 to 24240. [2021-11-06 17:49:10,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24240 states, 24233 states have (on average 1.2780505921677052) internal successors, (30971), 24239 states have internal predecessors, (30971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:49:10,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24240 states to 24240 states and 30971 transitions. [2021-11-06 17:49:10,366 INFO L78 Accepts]: Start accepts. Automaton has 24240 states and 30971 transitions. Word has length 45 [2021-11-06 17:49:10,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:49:10,366 INFO L470 AbstractCegarLoop]: Abstraction has 24240 states and 30971 transitions. [2021-11-06 17:49:10,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:49:10,367 INFO L276 IsEmpty]: Start isEmpty. Operand 24240 states and 30971 transitions. [2021-11-06 17:49:10,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-06 17:49:10,373 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:49:10,373 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:49:10,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 17:49:10,374 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-06 17:49:10,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:49:10,376 INFO L85 PathProgramCache]: Analyzing trace with hash 874923437, now seen corresponding path program 1 times [2021-11-06 17:49:10,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:49:10,376 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624178816] [2021-11-06 17:49:10,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:49:10,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:49:10,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:49:10,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:49:10,679 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:49:10,679 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624178816] [2021-11-06 17:49:10,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624178816] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:49:10,679 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:49:10,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:49:10,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922719996] [2021-11-06 17:49:10,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:49:10,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:49:10,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:49:10,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:49:10,681 INFO L87 Difference]: Start difference. First operand 24240 states and 30971 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:49:11,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:49:11,645 INFO L93 Difference]: Finished difference Result 69763 states and 89174 transitions. [2021-11-06 17:49:11,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:49:11,646 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2021-11-06 17:49:11,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:49:11,753 INFO L225 Difference]: With dead ends: 69763 [2021-11-06 17:49:11,753 INFO L226 Difference]: Without dead ends: 45557 [2021-11-06 17:49:11,811 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:49:11,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45557 states. [2021-11-06 17:49:12,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45557 to 45542. [2021-11-06 17:49:12,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45542 states, 45535 states have (on average 1.2788184912704512) internal successors, (58231), 45541 states have internal predecessors, (58231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:49:12,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45542 states to 45542 states and 58231 transitions. [2021-11-06 17:49:12,901 INFO L78 Accepts]: Start accepts. Automaton has 45542 states and 58231 transitions. Word has length 45 [2021-11-06 17:49:12,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:49:12,903 INFO L470 AbstractCegarLoop]: Abstraction has 45542 states and 58231 transitions. [2021-11-06 17:49:12,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:49:12,903 INFO L276 IsEmpty]: Start isEmpty. Operand 45542 states and 58231 transitions. [2021-11-06 17:49:12,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-06 17:49:12,909 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:49:12,909 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 17:49:12,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 17:49:12,910 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-06 17:49:12,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:49:12,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1968680070, now seen corresponding path program 1 times [2021-11-06 17:49:12,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:49:12,913 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032985618] [2021-11-06 17:49:12,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:49:12,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:49:13,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:49:13,255 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:49:13,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:49:13,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032985618] [2021-11-06 17:49:13,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032985618] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:49:13,256 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:49:13,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 17:49:13,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943507642] [2021-11-06 17:49:13,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 17:49:13,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:49:13,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 17:49:13,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 17:49:13,257 INFO L87 Difference]: Start difference. First operand 45542 states and 58231 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 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) [2021-11-06 17:49:15,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:49:15,626 INFO L93 Difference]: Finished difference Result 157813 states and 201810 transitions. [2021-11-06 17:49:15,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 17:49:15,627 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 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 [2021-11-06 17:49:15,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:49:15,898 INFO L225 Difference]: With dead ends: 157813 [2021-11-06 17:49:15,899 INFO L226 Difference]: Without dead ends: 112305 [2021-11-06 17:49:16,006 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 17:49:16,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112305 states. [2021-11-06 17:49:17,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112305 to 45542. [2021-11-06 17:49:17,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45542 states, 45535 states have (on average 1.2787306467552433) internal successors, (58227), 45541 states have internal predecessors, (58227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:49:17,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45542 states to 45542 states and 58227 transitions. [2021-11-06 17:49:17,600 INFO L78 Accepts]: Start accepts. Automaton has 45542 states and 58227 transitions. Word has length 74 [2021-11-06 17:49:17,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:49:17,601 INFO L470 AbstractCegarLoop]: Abstraction has 45542 states and 58227 transitions. [2021-11-06 17:49:17,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 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) [2021-11-06 17:49:17,601 INFO L276 IsEmpty]: Start isEmpty. Operand 45542 states and 58227 transitions. [2021-11-06 17:49:17,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-06 17:49:17,606 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:49:17,606 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 17:49:17,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 17:49:17,606 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-06 17:49:17,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:49:17,607 INFO L85 PathProgramCache]: Analyzing trace with hash -388972167, now seen corresponding path program 1 times [2021-11-06 17:49:17,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:49:17,607 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132826906] [2021-11-06 17:49:17,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:49:17,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:49:17,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:49:17,901 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:49:17,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:49:17,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132826906] [2021-11-06 17:49:17,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132826906] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:49:17,902 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:49:17,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 17:49:17,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897216552] [2021-11-06 17:49:17,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 17:49:17,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:49:17,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 17:49:17,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 17:49:17,903 INFO L87 Difference]: Start difference. First operand 45542 states and 58227 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:49:20,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:49:20,646 INFO L93 Difference]: Finished difference Result 157817 states and 201806 transitions. [2021-11-06 17:49:20,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 17:49:20,647 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-06 17:49:20,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:49:20,909 INFO L225 Difference]: With dead ends: 157817 [2021-11-06 17:49:20,910 INFO L226 Difference]: Without dead ends: 112309 [2021-11-06 17:49:21,014 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 17:49:21,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112309 states. [2021-11-06 17:49:22,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112309 to 45542. [2021-11-06 17:49:22,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45542 states, 45535 states have (on average 1.2786867244976392) internal successors, (58225), 45541 states have internal predecessors, (58225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:49:22,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45542 states to 45542 states and 58225 transitions. [2021-11-06 17:49:22,827 INFO L78 Accepts]: Start accepts. Automaton has 45542 states and 58225 transitions. Word has length 80 [2021-11-06 17:49:22,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:49:22,829 INFO L470 AbstractCegarLoop]: Abstraction has 45542 states and 58225 transitions. [2021-11-06 17:49:22,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:49:22,829 INFO L276 IsEmpty]: Start isEmpty. Operand 45542 states and 58225 transitions. [2021-11-06 17:49:22,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-06 17:49:22,834 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:49:22,834 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:49:22,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 17:49:22,834 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-06 17:49:22,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:49:22,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1770265138, now seen corresponding path program 1 times [2021-11-06 17:49:22,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:49:22,835 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431058498] [2021-11-06 17:49:22,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:49:22,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:49:23,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:49:23,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:49:23,214 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:49:23,214 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431058498] [2021-11-06 17:49:23,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431058498] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:49:23,215 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:49:23,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:49:23,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614491275] [2021-11-06 17:49:23,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:49:23,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:49:23,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:49:23,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:49:23,216 INFO L87 Difference]: Start difference. First operand 45542 states and 58225 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:49:25,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:49:25,600 INFO L93 Difference]: Finished difference Result 128296 states and 163910 transitions. [2021-11-06 17:49:25,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:49:25,600 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-11-06 17:49:25,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:49:25,743 INFO L225 Difference]: With dead ends: 128296 [2021-11-06 17:49:25,744 INFO L226 Difference]: Without dead ends: 82788 [2021-11-06 17:49:25,924 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:49:25,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82788 states. [2021-11-06 17:49:27,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82788 to 81048. [2021-11-06 17:49:28,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81048 states, 81041 states have (on average 1.2746757813946028) internal successors, (103301), 81047 states have internal predecessors, (103301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:49:28,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81048 states to 81048 states and 103301 transitions. [2021-11-06 17:49:28,362 INFO L78 Accepts]: Start accepts. Automaton has 81048 states and 103301 transitions. Word has length 82 [2021-11-06 17:49:28,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:49:28,362 INFO L470 AbstractCegarLoop]: Abstraction has 81048 states and 103301 transitions. [2021-11-06 17:49:28,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:49:28,363 INFO L276 IsEmpty]: Start isEmpty. Operand 81048 states and 103301 transitions. [2021-11-06 17:49:28,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-06 17:49:28,372 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:49:28,372 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 17:49:28,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 17:49:28,372 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-06 17:49:28,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:49:28,376 INFO L85 PathProgramCache]: Analyzing trace with hash 640550573, now seen corresponding path program 1 times [2021-11-06 17:49:28,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:49:28,376 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246429565] [2021-11-06 17:49:28,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:49:28,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:49:28,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:49:28,700 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-06 17:49:28,700 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:49:28,700 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246429565] [2021-11-06 17:49:28,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246429565] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:49:28,700 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:49:28,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 17:49:28,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395890442] [2021-11-06 17:49:28,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:49:28,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:49:28,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:49:28,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:49:28,701 INFO L87 Difference]: Start difference. First operand 81048 states and 103301 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:49:30,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:49:30,486 INFO L93 Difference]: Finished difference Result 81048 states and 103301 transitions. [2021-11-06 17:49:30,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:49:30,487 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 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 85 [2021-11-06 17:49:30,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:49:30,622 INFO L225 Difference]: With dead ends: 81048 [2021-11-06 17:49:30,623 INFO L226 Difference]: Without dead ends: 81038 [2021-11-06 17:49:30,654 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:49:30,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81038 states. [2021-11-06 17:49:32,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81038 to 81038. [2021-11-06 17:49:32,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81038 states, 81036 states have (on average 1.2744952860457082) internal successors, (103280), 81037 states have internal predecessors, (103280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:49:33,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81038 states to 81038 states and 103280 transitions. [2021-11-06 17:49:33,124 INFO L78 Accepts]: Start accepts. Automaton has 81038 states and 103280 transitions. Word has length 85 [2021-11-06 17:49:33,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:49:33,125 INFO L470 AbstractCegarLoop]: Abstraction has 81038 states and 103280 transitions. [2021-11-06 17:49:33,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 17:49:33,125 INFO L276 IsEmpty]: Start isEmpty. Operand 81038 states and 103280 transitions. [2021-11-06 17:49:33,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-06 17:49:33,143 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:49:33,143 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:49:33,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 17:49:33,143 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-06 17:49:33,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:49:33,144 INFO L85 PathProgramCache]: Analyzing trace with hash -999676864, now seen corresponding path program 1 times [2021-11-06 17:49:33,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:49:33,144 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227549151] [2021-11-06 17:49:33,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:49:33,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:49:33,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:49:33,379 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:49:33,380 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:49:33,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227549151] [2021-11-06 17:49:33,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227549151] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:49:33,380 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:49:33,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:49:33,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435232548] [2021-11-06 17:49:33,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:49:33,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:49:33,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:49:33,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:49:33,381 INFO L87 Difference]: Start difference. First operand 81038 states and 103280 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)