./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--usb--serial--mos7840.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--usb--serial--mos7840.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 c1586642bef6980141a60942369684a3359f9fff4af003e79a9c46b72c273d5b --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 16:25:44,129 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 16:25:44,132 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 16:25:44,165 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 16:25:44,166 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 16:25:44,167 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 16:25:44,168 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 16:25:44,170 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 16:25:44,171 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 16:25:44,172 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 16:25:44,173 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 16:25:44,174 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 16:25:44,174 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 16:25:44,175 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 16:25:44,176 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 16:25:44,177 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 16:25:44,178 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 16:25:44,178 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 16:25:44,180 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 16:25:44,181 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 16:25:44,183 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 16:25:44,184 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 16:25:44,185 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 16:25:44,186 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 16:25:44,188 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 16:25:44,188 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 16:25:44,189 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 16:25:44,189 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 16:25:44,190 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 16:25:44,190 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 16:25:44,191 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 16:25:44,191 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 16:25:44,192 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 16:25:44,192 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 16:25:44,193 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 16:25:44,193 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 16:25:44,194 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 16:25:44,194 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 16:25:44,194 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 16:25:44,195 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 16:25:44,196 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 16:25:44,197 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 16:25:44,213 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 16:25:44,215 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 16:25:44,215 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 16:25:44,216 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 16:25:44,217 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 16:25:44,217 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 16:25:44,217 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 16:25:44,218 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 16:25:44,218 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 16:25:44,218 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 16:25:44,218 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 16:25:44,219 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 16:25:44,219 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 16:25:44,219 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 16:25:44,219 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 16:25:44,219 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 16:25:44,220 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 16:25:44,220 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 16:25:44,220 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 16:25:44,220 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 16:25:44,220 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 16:25:44,221 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 16:25:44,221 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 16:25:44,221 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 16:25:44,221 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 16:25:44,221 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 16:25:44,221 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 16:25:44,222 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 16:25:44,222 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 16:25:44,222 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c1586642bef6980141a60942369684a3359f9fff4af003e79a9c46b72c273d5b [2021-11-07 16:25:44,420 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 16:25:44,442 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 16:25:44,445 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 16:25:44,446 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 16:25:44,447 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 16:25:44,450 INFO L432 ainManager$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--usb--serial--mos7840.ko-entry_point.cil.out.i [2021-11-07 16:25:44,513 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/adedc35a4/dbc0daed4ac9402583b5efe5579b5be3/FLAG2ec84253f [2021-11-07 16:25:45,186 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 16:25:45,187 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--usb--serial--mos7840.ko-entry_point.cil.out.i [2021-11-07 16:25:45,217 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/adedc35a4/dbc0daed4ac9402583b5efe5579b5be3/FLAG2ec84253f [2021-11-07 16:25:45,500 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/adedc35a4/dbc0daed4ac9402583b5efe5579b5be3 [2021-11-07 16:25:45,502 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 16:25:45,503 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 16:25:45,504 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 16:25:45,504 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 16:25:45,509 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 16:25:45,509 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:25:45" (1/1) ... [2021-11-07 16:25:45,510 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a2de190 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:25:45, skipping insertion in model container [2021-11-07 16:25:45,510 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:25:45" (1/1) ... [2021-11-07 16:25:45,515 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 16:25:45,601 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 16:25:46,738 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--usb--serial--mos7840.ko-entry_point.cil.out.i[297800,297813] [2021-11-07 16:25:46,774 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 16:25:46,805 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 16:25:47,087 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--usb--serial--mos7840.ko-entry_point.cil.out.i[297800,297813] [2021-11-07 16:25:47,091 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 16:25:47,144 INFO L208 MainTranslator]: Completed translation [2021-11-07 16:25:47,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:25:47 WrapperNode [2021-11-07 16:25:47,145 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 16:25:47,147 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 16:25:47,147 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 16:25:47,147 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 16:25:47,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:25:47" (1/1) ... [2021-11-07 16:25:47,228 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:25:47" (1/1) ... [2021-11-07 16:25:48,132 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 16:25:48,133 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 16:25:48,133 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 16:25:48,133 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 16:25:48,139 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:25:47" (1/1) ... [2021-11-07 16:25:48,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:25:47" (1/1) ... [2021-11-07 16:25:48,395 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:25:47" (1/1) ... [2021-11-07 16:25:48,395 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:25:47" (1/1) ... [2021-11-07 16:25:49,031 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:25:47" (1/1) ... [2021-11-07 16:25:49,191 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:25:47" (1/1) ... [2021-11-07 16:25:49,350 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:25:47" (1/1) ... [2021-11-07 16:25:49,613 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 16:25:49,614 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 16:25:49,614 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 16:25:49,614 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 16:25:49,615 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:25:47" (1/1) ... [2021-11-07 16:25:49,619 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 16:25:49,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 16:25:49,636 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 16:25:49,655 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 16:25:49,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 16:25:49,664 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 16:25:49,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 16:25:49,664 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 16:25:49,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 16:25:49,665 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 16:25:49,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 16:25:49,665 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 16:25:49,665 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 16:25:49,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 16:25:49,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 16:25:49,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 16:25:49,665 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 16:25:49,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 16:25:49,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 16:28:16,123 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 16:28:16,124 INFO L299 CfgBuilder]: Removed 5309 assume(true) statements. [2021-11-07 16:28:16,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:28:16 BoogieIcfgContainer [2021-11-07 16:28:16,129 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 16:28:16,130 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 16:28:16,131 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 16:28:16,133 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 16:28:16,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:25:45" (1/3) ... [2021-11-07 16:28:16,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3344c425 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:28:16, skipping insertion in model container [2021-11-07 16:28:16,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:25:47" (2/3) ... [2021-11-07 16:28:16,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3344c425 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:28:16, skipping insertion in model container [2021-11-07 16:28:16,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:28:16" (3/3) ... [2021-11-07 16:28:16,135 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--usb--serial--mos7840.ko-entry_point.cil.out.i [2021-11-07 16:28:16,139 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 16:28:16,139 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 102 error locations. [2021-11-07 16:28:16,202 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 16:28:16,207 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 16:28:16,208 INFO L340 AbstractCegarLoop]: Starting to check reachability of 102 error locations. [2021-11-07 16:28:16,277 INFO L276 IsEmpty]: Start isEmpty. Operand has 6104 states, 6001 states have (on average 1.436760539910015) internal successors, (8622), 6103 states have internal predecessors, (8622), 0 states have call successors, (0), 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 16:28:16,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-07 16:28:16,285 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:28:16,286 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] [2021-11-07 16:28:16,286 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 99 more)] === [2021-11-07 16:28:16,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:28:16,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1993312839, now seen corresponding path program 1 times [2021-11-07 16:28:16,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:28:16,297 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941311996] [2021-11-07 16:28:16,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:28:16,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:28:16,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:28:17,250 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 16:28:17,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:28:17,251 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941311996] [2021-11-07 16:28:17,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941311996] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:28:17,252 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:28:17,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 16:28:17,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487485940] [2021-11-07 16:28:17,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:28:17,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 16:28:17,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:28:17,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 16:28:17,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 16:28:17,290 INFO L87 Difference]: Start difference. First operand has 6104 states, 6001 states have (on average 1.436760539910015) internal successors, (8622), 6103 states have internal predecessors, (8622), 0 states have call successors, (0), 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 25.5) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 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 16:28:17,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:28:17,434 INFO L93 Difference]: Finished difference Result 12204 states and 17239 transitions. [2021-11-07 16:28:17,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 16:28:17,437 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2021-11-07 16:28:17,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:28:17,472 INFO L225 Difference]: With dead ends: 12204 [2021-11-07 16:28:17,472 INFO L226 Difference]: Without dead ends: 6094 [2021-11-07 16:28:17,488 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.02ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 16:28:17,493 INFO L933 BasicCegarLoop]: 8452 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, 8452 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.91ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-07 16:28:17,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 8452 Invalid, 0 Unknown, 0 Unchecked, 10.91ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-07 16:28:17,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6094 states. [2021-11-07 16:28:17,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6094 to 6094. [2021-11-07 16:28:17,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6094 states, 5992 states have (on average 1.4078771695594126) internal successors, (8436), 6093 states have internal predecessors, (8436), 0 states have call successors, (0), 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 16:28:17,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6094 states to 6094 states and 8436 transitions. [2021-11-07 16:28:17,655 INFO L78 Accepts]: Start accepts. Automaton has 6094 states and 8436 transitions. Word has length 51 [2021-11-07 16:28:17,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:28:17,656 INFO L470 AbstractCegarLoop]: Abstraction has 6094 states and 8436 transitions. [2021-11-07 16:28:17,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 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 16:28:17,656 INFO L276 IsEmpty]: Start isEmpty. Operand 6094 states and 8436 transitions. [2021-11-07 16:28:17,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-07 16:28:17,658 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:28:17,659 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] [2021-11-07 16:28:17,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 16:28:17,659 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 99 more)] === [2021-11-07 16:28:17,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:28:17,660 INFO L85 PathProgramCache]: Analyzing trace with hash 116912959, now seen corresponding path program 1 times [2021-11-07 16:28:17,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:28:17,660 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309847066] [2021-11-07 16:28:17,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:28:17,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:28:17,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:28:18,381 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 16:28:18,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:28:18,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309847066] [2021-11-07 16:28:18,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309847066] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:28:18,382 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:28:18,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 16:28:18,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036389620] [2021-11-07 16:28:18,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:28:18,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 16:28:18,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:28:18,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 16:28:18,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:28:18,384 INFO L87 Difference]: Start difference. First operand 6094 states and 8436 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 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 16:28:20,509 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:28:24,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:28:24,913 INFO L93 Difference]: Finished difference Result 30083 states and 41585 transitions. [2021-11-07 16:28:24,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 16:28:24,913 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2021-11-07 16:28:24,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:28:25,000 INFO L225 Difference]: With dead ends: 30083 [2021-11-07 16:28:25,001 INFO L226 Difference]: Without dead ends: 24031 [2021-11-07 16:28:25,023 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 136.45ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:28:25,028 INFO L933 BasicCegarLoop]: 8547 mSDtfsCounter, 24644 mSDsluCounter, 49366 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 77 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5668.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 24644 SdHoareTripleChecker+Valid, 57913 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 73.50ms SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5972.72ms IncrementalHoareTripleChecker+Time [2021-11-07 16:28:25,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24644 Valid, 57913 Invalid, 596 Unknown, 0 Unchecked, 73.50ms Time], IncrementalHoareTripleChecker [77 Valid, 518 Invalid, 1 Unknown, 0 Unchecked, 5972.72ms Time] [2021-11-07 16:28:25,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24031 states. [2021-11-07 16:28:25,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24031 to 23401. [2021-11-07 16:28:25,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23401 states, 23299 states have (on average 1.407914502768359) internal successors, (32803), 23400 states have internal predecessors, (32803), 0 states have call successors, (0), 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 16:28:25,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23401 states to 23401 states and 32803 transitions. [2021-11-07 16:28:25,541 INFO L78 Accepts]: Start accepts. Automaton has 23401 states and 32803 transitions. Word has length 51 [2021-11-07 16:28:25,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:28:25,542 INFO L470 AbstractCegarLoop]: Abstraction has 23401 states and 32803 transitions. [2021-11-07 16:28:25,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 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 16:28:25,544 INFO L276 IsEmpty]: Start isEmpty. Operand 23401 states and 32803 transitions. [2021-11-07 16:28:25,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-07 16:28:25,552 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:28:25,552 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] [2021-11-07 16:28:25,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 16:28:25,553 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 99 more)] === [2021-11-07 16:28:25,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:28:25,554 INFO L85 PathProgramCache]: Analyzing trace with hash -2140903843, now seen corresponding path program 1 times [2021-11-07 16:28:25,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:28:25,554 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250347368] [2021-11-07 16:28:25,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:28:25,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:28:25,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:28:26,060 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 16:28:26,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:28:26,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250347368] [2021-11-07 16:28:26,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250347368] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:28:26,060 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:28:26,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:28:26,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326512906] [2021-11-07 16:28:26,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:28:26,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:28:26,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:28:26,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:28:26,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:28:26,061 INFO L87 Difference]: Start difference. First operand 23401 states and 32803 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 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 16:28:28,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:28:28,547 INFO L93 Difference]: Finished difference Result 47242 states and 66288 transitions. [2021-11-07 16:28:28,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:28:28,548 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2021-11-07 16:28:28,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:28:28,596 INFO L225 Difference]: With dead ends: 47242 [2021-11-07 16:28:28,597 INFO L226 Difference]: Without dead ends: 23883 [2021-11-07 16:28:28,619 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.70ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:28:28,622 INFO L933 BasicCegarLoop]: 8435 mSDtfsCounter, 265 mSDsluCounter, 8177 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1834.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 16612 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.96ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1978.81ms IncrementalHoareTripleChecker+Time [2021-11-07 16:28:28,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [265 Valid, 16612 Invalid, 212 Unknown, 0 Unchecked, 12.96ms Time], IncrementalHoareTripleChecker [2 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 1978.81ms Time] [2021-11-07 16:28:28,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23883 states. [2021-11-07 16:28:28,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23883 to 23875. [2021-11-07 16:28:29,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23875 states, 23773 states have (on average 1.4102553316787954) internal successors, (33526), 23874 states have internal predecessors, (33526), 0 states have call successors, (0), 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 16:28:29,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23875 states to 23875 states and 33526 transitions. [2021-11-07 16:28:29,057 INFO L78 Accepts]: Start accepts. Automaton has 23875 states and 33526 transitions. Word has length 52 [2021-11-07 16:28:29,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:28:29,057 INFO L470 AbstractCegarLoop]: Abstraction has 23875 states and 33526 transitions. [2021-11-07 16:28:29,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 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 16:28:29,059 INFO L276 IsEmpty]: Start isEmpty. Operand 23875 states and 33526 transitions. [2021-11-07 16:28:29,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-07 16:28:29,059 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:28:29,060 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] [2021-11-07 16:28:29,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 16:28:29,060 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 99 more)] === [2021-11-07 16:28:29,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:28:29,060 INFO L85 PathProgramCache]: Analyzing trace with hash 2052243934, now seen corresponding path program 1 times [2021-11-07 16:28:29,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:28:29,061 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142338485] [2021-11-07 16:28:29,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:28:29,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:28:29,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:28:29,765 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 16:28:29,765 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:28:29,765 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142338485] [2021-11-07 16:28:29,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142338485] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:28:29,766 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:28:29,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 16:28:29,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105050945] [2021-11-07 16:28:29,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:28:29,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 16:28:29,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:28:29,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 16:28:29,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:28:29,767 INFO L87 Difference]: Start difference. First operand 23875 states and 33526 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 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 16:28:31,874 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:28:36,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:28:36,446 INFO L93 Difference]: Finished difference Result 118483 states and 166241 transitions. [2021-11-07 16:28:36,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 16:28:36,447 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2021-11-07 16:28:36,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:28:36,645 INFO L225 Difference]: With dead ends: 118483 [2021-11-07 16:28:36,645 INFO L226 Difference]: Without dead ends: 94650 [2021-11-07 16:28:36,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 105.19ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:28:36,706 INFO L933 BasicCegarLoop]: 8459 mSDtfsCounter, 24739 mSDsluCounter, 49344 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 77 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5428.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 24739 SdHoareTripleChecker+Valid, 57803 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 44.76ms SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5658.29ms IncrementalHoareTripleChecker+Time [2021-11-07 16:28:36,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24739 Valid, 57803 Invalid, 592 Unknown, 0 Unchecked, 44.76ms Time], IncrementalHoareTripleChecker [77 Valid, 514 Invalid, 1 Unknown, 0 Unchecked, 5658.29ms Time] [2021-11-07 16:28:36,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94650 states. [2021-11-07 16:28:38,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94650 to 93992. [2021-11-07 16:28:38,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93992 states, 93890 states have (on average 1.4081478325700287) internal successors, (132211), 93991 states have internal predecessors, (132211), 0 states have call successors, (0), 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 16:28:38,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93992 states to 93992 states and 132211 transitions. [2021-11-07 16:28:38,692 INFO L78 Accepts]: Start accepts. Automaton has 93992 states and 132211 transitions. Word has length 52 [2021-11-07 16:28:38,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:28:38,693 INFO L470 AbstractCegarLoop]: Abstraction has 93992 states and 132211 transitions. [2021-11-07 16:28:38,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 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 16:28:38,693 INFO L276 IsEmpty]: Start isEmpty. Operand 93992 states and 132211 transitions. [2021-11-07 16:28:38,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-07 16:28:38,694 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:28:38,694 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] [2021-11-07 16:28:38,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 16:28:38,694 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 99 more)] === [2021-11-07 16:28:38,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:28:38,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1917962124, now seen corresponding path program 1 times [2021-11-07 16:28:38,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:28:38,695 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46496799] [2021-11-07 16:28:38,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:28:38,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:28:38,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:28:39,245 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 16:28:39,245 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:28:39,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46496799] [2021-11-07 16:28:39,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46496799] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:28:39,246 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:28:39,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 16:28:39,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103819923] [2021-11-07 16:28:39,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:28:39,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 16:28:39,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:28:39,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 16:28:39,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:28:39,247 INFO L87 Difference]: Start difference. First operand 93992 states and 132211 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 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 16:28:41,350 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:28:49,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:28:49,707 INFO L93 Difference]: Finished difference Result 467606 states and 657492 transitions. [2021-11-07 16:28:49,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 16:28:49,707 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2021-11-07 16:28:49,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:28:50,769 INFO L225 Difference]: With dead ends: 467606 [2021-11-07 16:28:50,769 INFO L226 Difference]: Without dead ends: 373656 [2021-11-07 16:28:50,936 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 109.36ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:28:50,937 INFO L933 BasicCegarLoop]: 8410 mSDtfsCounter, 24834 mSDsluCounter, 49328 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 77 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5516.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 24834 SdHoareTripleChecker+Valid, 57738 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 45.29ms SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5759.07ms IncrementalHoareTripleChecker+Time [2021-11-07 16:28:50,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24834 Valid, 57738 Invalid, 588 Unknown, 0 Unchecked, 45.29ms Time], IncrementalHoareTripleChecker [77 Valid, 510 Invalid, 1 Unknown, 0 Unchecked, 5759.07ms Time] [2021-11-07 16:28:51,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373656 states. [2021-11-07 16:28:57,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373656 to 372950. [2021-11-07 16:28:58,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372950 states, 372848 states have (on average 1.4063559412951123) internal successors, (524357), 372949 states have internal predecessors, (524357), 0 states have call successors, (0), 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 16:28:59,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372950 states to 372950 states and 524357 transitions. [2021-11-07 16:28:59,500 INFO L78 Accepts]: Start accepts. Automaton has 372950 states and 524357 transitions. Word has length 53 [2021-11-07 16:28:59,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:28:59,500 INFO L470 AbstractCegarLoop]: Abstraction has 372950 states and 524357 transitions. [2021-11-07 16:28:59,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 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 16:28:59,501 INFO L276 IsEmpty]: Start isEmpty. Operand 372950 states and 524357 transitions. [2021-11-07 16:28:59,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-07 16:28:59,502 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:28:59,502 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:28:59,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 16:28:59,502 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 99 more)] === [2021-11-07 16:28:59,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:28:59,503 INFO L85 PathProgramCache]: Analyzing trace with hash 2050193419, now seen corresponding path program 1 times [2021-11-07 16:28:59,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:28:59,503 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818062439] [2021-11-07 16:28:59,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:28:59,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:28:59,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:29:00,117 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 16:29:00,117 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:29:00,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818062439] [2021-11-07 16:29:00,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818062439] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:29:00,118 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:29:00,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 16:29:00,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356504687] [2021-11-07 16:29:00,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:29:00,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 16:29:00,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:29:00,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 16:29:00,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:29:00,119 INFO L87 Difference]: Start difference. First operand 372950 states and 524357 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:29:02,239 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []