./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--class--cdc-acm.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-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--class--cdc-acm.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 73338d683e10a9827a18cf31e1247b64129367b1297cba22c91c243b4552d29d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 14:25:44,181 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 14:25:44,183 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 14:25:44,246 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 14:25:44,246 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 14:25:44,247 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 14:25:44,247 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 14:25:44,248 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 14:25:44,249 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 14:25:44,250 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 14:25:44,250 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 14:25:44,255 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 14:25:44,256 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 14:25:44,259 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 14:25:44,261 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 14:25:44,264 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 14:25:44,264 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 14:25:44,265 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 14:25:44,269 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 14:25:44,272 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 14:25:44,273 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 14:25:44,274 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 14:25:44,275 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 14:25:44,276 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 14:25:44,282 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 14:25:44,282 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 14:25:44,283 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 14:25:44,284 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 14:25:44,284 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 14:25:44,285 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 14:25:44,285 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 14:25:44,286 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 14:25:44,287 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 14:25:44,288 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 14:25:44,288 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 14:25:44,289 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 14:25:44,289 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 14:25:44,289 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 14:25:44,289 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 14:25:44,290 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 14:25:44,290 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 14:25:44,291 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 14:25:44,310 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 14:25:44,310 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 14:25:44,310 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 14:25:44,311 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 14:25:44,312 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 14:25:44,312 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 14:25:44,312 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 14:25:44,312 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 14:25:44,312 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 14:25:44,312 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 14:25:44,313 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 14:25:44,313 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 14:25:44,313 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 14:25:44,313 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 14:25:44,313 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 14:25:44,314 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 14:25:44,314 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 14:25:44,314 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 14:25:44,314 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 14:25:44,314 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 14:25:44,314 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 14:25:44,314 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 14:25:44,315 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 14:25:44,315 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 14:25:44,315 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 14:25:44,315 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 14:25:44,315 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 14:25:44,315 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 14:25:44,315 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 14:25:44,316 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 73338d683e10a9827a18cf31e1247b64129367b1297cba22c91c243b4552d29d [2021-11-06 14:25:44,488 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 14:25:44,518 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 14:25:44,519 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 14:25:44,520 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 14:25:44,521 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 14:25:44,522 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i [2021-11-06 14:25:44,572 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34c7f281a/497585a17b8b4bd4b1ca386eb4b21de2/FLAG1f9e7ac61 [2021-11-06 14:25:45,173 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 14:25:45,174 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i [2021-11-06 14:25:45,209 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34c7f281a/497585a17b8b4bd4b1ca386eb4b21de2/FLAG1f9e7ac61 [2021-11-06 14:25:45,612 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34c7f281a/497585a17b8b4bd4b1ca386eb4b21de2 [2021-11-06 14:25:45,616 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 14:25:45,618 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 14:25:45,620 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 14:25:45,620 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 14:25:45,622 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 14:25:45,623 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 02:25:45" (1/1) ... [2021-11-06 14:25:45,624 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b44650d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:25:45, skipping insertion in model container [2021-11-06 14:25:45,624 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 02:25:45" (1/1) ... [2021-11-06 14:25:45,628 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 14:25:45,705 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 14:25:46,513 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-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i[116401,116414] [2021-11-06 14:25:46,869 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 14:25:46,920 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 14:25:47,001 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-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i[116401,116414] [2021-11-06 14:25:47,173 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 14:25:47,274 INFO L208 MainTranslator]: Completed translation [2021-11-06 14:25:47,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:25:47 WrapperNode [2021-11-06 14:25:47,275 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 14:25:47,277 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 14:25:47,278 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 14:25:47,278 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 14:25:47,284 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:25:47" (1/1) ... [2021-11-06 14:25:47,359 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:25:47" (1/1) ... [2021-11-06 14:25:47,684 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 14:25:47,684 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 14:25:47,684 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 14:25:47,685 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 14:25:47,691 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:25:47" (1/1) ... [2021-11-06 14:25:47,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:25:47" (1/1) ... [2021-11-06 14:25:47,764 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:25:47" (1/1) ... [2021-11-06 14:25:47,765 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:25:47" (1/1) ... [2021-11-06 14:25:47,960 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:25:47" (1/1) ... [2021-11-06 14:25:47,986 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:25:47" (1/1) ... [2021-11-06 14:25:48,022 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:25:47" (1/1) ... [2021-11-06 14:25:48,071 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 14:25:48,072 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 14:25:48,073 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 14:25:48,073 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 14:25:48,074 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:25:47" (1/1) ... [2021-11-06 14:25:48,079 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 14:25:48,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:25:48,096 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 14:25:48,115 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 14:25:48,124 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 14:25:48,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 14:25:48,124 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2021-11-06 14:25:48,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2021-11-06 14:25:48,124 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 14:25:48,124 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-06 14:25:48,124 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 14:25:48,125 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-06 14:25:48,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 14:25:48,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 14:25:48,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 14:25:48,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 14:25:48,125 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_7 [2021-11-06 14:25:48,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_7 [2021-11-06 14:25:48,125 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_6 [2021-11-06 14:25:48,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_6 [2021-11-06 14:25:48,126 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 14:25:48,126 INFO L130 BoogieDeclarations]: Found specification of procedure acm_submit_read_urb [2021-11-06 14:25:48,126 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_submit_read_urb [2021-11-06 14:25:48,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 14:25:48,126 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_unthrottle [2021-11-06 14:25:48,126 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_unthrottle [2021-11-06 14:25:48,126 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 14:25:48,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 14:25:48,126 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-06 14:25:48,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-06 14:25:48,127 INFO L130 BoogieDeclarations]: Found specification of procedure acm_ctrl_irq [2021-11-06 14:25:48,127 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_ctrl_irq [2021-11-06 14:25:48,127 INFO L130 BoogieDeclarations]: Found specification of procedure acm_submit_read_urbs [2021-11-06 14:25:48,127 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_submit_read_urbs [2021-11-06 14:25:48,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 14:25:48,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 14:25:48,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 14:25:48,127 INFO L130 BoogieDeclarations]: Found specification of procedure acm_read_bulk_callback [2021-11-06 14:25:48,128 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_read_bulk_callback [2021-11-06 14:26:04,148 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 14:26:04,149 INFO L299 CfgBuilder]: Removed 1975 assume(true) statements. [2021-11-06 14:26:04,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 02:26:04 BoogieIcfgContainer [2021-11-06 14:26:04,152 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 14:26:04,153 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 14:26:04,153 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 14:26:04,164 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 14:26:04,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 02:25:45" (1/3) ... [2021-11-06 14:26:04,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5278cb39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 02:26:04, skipping insertion in model container [2021-11-06 14:26:04,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:25:47" (2/3) ... [2021-11-06 14:26:04,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5278cb39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 02:26:04, skipping insertion in model container [2021-11-06 14:26:04,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 02:26:04" (3/3) ... [2021-11-06 14:26:04,167 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i [2021-11-06 14:26:04,170 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 14:26:04,171 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2021-11-06 14:26:04,209 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 14:26:04,213 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 14:26:04,213 INFO L340 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2021-11-06 14:26:04,257 INFO L276 IsEmpty]: Start isEmpty. Operand has 1922 states, 1880 states have (on average 1.373404255319149) internal successors, (2582), 1892 states have internal predecessors, (2582), 23 states have call successors, (23), 9 states have call predecessors, (23), 9 states have return successors, (23), 21 states have call predecessors, (23), 23 states have call successors, (23) [2021-11-06 14:26:04,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-06 14:26:04,265 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:26:04,265 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] [2021-11-06 14:26:04,266 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-06 14:26:04,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:26:04,270 INFO L85 PathProgramCache]: Analyzing trace with hash 2106712065, now seen corresponding path program 1 times [2021-11-06 14:26:04,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:26:04,276 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416215432] [2021-11-06 14:26:04,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:26:04,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:26:04,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:26:04,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 14:26:04,996 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:26:04,996 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416215432] [2021-11-06 14:26:04,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416215432] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:26:04,997 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:26:04,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:26:04,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001932314] [2021-11-06 14:26:05,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:26:05,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:26:05,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:26:05,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:26:05,022 INFO L87 Difference]: Start difference. First operand has 1922 states, 1880 states have (on average 1.373404255319149) internal successors, (2582), 1892 states have internal predecessors, (2582), 23 states have call successors, (23), 9 states have call predecessors, (23), 9 states have return successors, (23), 21 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 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 14:26:07,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:26:07,468 INFO L93 Difference]: Finished difference Result 5543 states and 7638 transitions. [2021-11-06 14:26:07,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:26:07,469 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2021-11-06 14:26:07,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:26:07,495 INFO L225 Difference]: With dead ends: 5543 [2021-11-06 14:26:07,495 INFO L226 Difference]: Without dead ends: 3574 [2021-11-06 14:26:07,506 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 14:26:07,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3574 states. [2021-11-06 14:26:07,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3574 to 3566. [2021-11-06 14:26:07,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3566 states, 3493 states have (on average 1.3160606928141998) internal successors, (4597), 3507 states have internal predecessors, (4597), 46 states have call successors, (46), 18 states have call predecessors, (46), 18 states have return successors, (46), 42 states have call predecessors, (46), 46 states have call successors, (46) [2021-11-06 14:26:07,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3566 states to 3566 states and 4689 transitions. [2021-11-06 14:26:07,687 INFO L78 Accepts]: Start accepts. Automaton has 3566 states and 4689 transitions. Word has length 47 [2021-11-06 14:26:07,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:26:07,689 INFO L470 AbstractCegarLoop]: Abstraction has 3566 states and 4689 transitions. [2021-11-06 14:26:07,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 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 14:26:07,690 INFO L276 IsEmpty]: Start isEmpty. Operand 3566 states and 4689 transitions. [2021-11-06 14:26:07,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-06 14:26:07,698 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:26:07,698 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] [2021-11-06 14:26:07,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 14:26:07,700 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-06 14:26:07,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:26:07,703 INFO L85 PathProgramCache]: Analyzing trace with hash -277741212, now seen corresponding path program 1 times [2021-11-06 14:26:07,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:26:07,704 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330292522] [2021-11-06 14:26:07,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:26:07,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:26:08,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:26:08,262 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 14:26:08,263 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:26:08,263 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330292522] [2021-11-06 14:26:08,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330292522] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:26:08,263 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:26:08,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 14:26:08,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514622014] [2021-11-06 14:26:08,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:26:08,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:26:08,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:26:08,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:26:08,268 INFO L87 Difference]: Start difference. First operand 3566 states and 4689 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 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 14:26:08,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:26:08,556 INFO L93 Difference]: Finished difference Result 10434 states and 13912 transitions. [2021-11-06 14:26:08,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:26:08,557 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2021-11-06 14:26:08,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:26:08,586 INFO L225 Difference]: With dead ends: 10434 [2021-11-06 14:26:08,586 INFO L226 Difference]: Without dead ends: 6999 [2021-11-06 14:26:08,597 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 14:26:08,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6999 states. [2021-11-06 14:26:08,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6999 to 6979. [2021-11-06 14:26:08,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6979 states, 6842 states have (on average 1.3164279450453085) internal successors, (9007), 6862 states have internal predecessors, (9007), 92 states have call successors, (92), 36 states have call predecessors, (92), 36 states have return successors, (138), 84 states have call predecessors, (138), 92 states have call successors, (138) [2021-11-06 14:26:08,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6979 states to 6979 states and 9237 transitions. [2021-11-06 14:26:08,767 INFO L78 Accepts]: Start accepts. Automaton has 6979 states and 9237 transitions. Word has length 55 [2021-11-06 14:26:08,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:26:08,768 INFO L470 AbstractCegarLoop]: Abstraction has 6979 states and 9237 transitions. [2021-11-06 14:26:08,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 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 14:26:08,768 INFO L276 IsEmpty]: Start isEmpty. Operand 6979 states and 9237 transitions. [2021-11-06 14:26:08,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-06 14:26:08,770 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:26:08,770 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] [2021-11-06 14:26:08,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 14:26:08,771 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-06 14:26:08,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:26:08,771 INFO L85 PathProgramCache]: Analyzing trace with hash -20038658, now seen corresponding path program 1 times [2021-11-06 14:26:08,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:26:08,772 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619431713] [2021-11-06 14:26:08,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:26:08,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:26:08,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:26:09,106 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 14:26:09,107 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:26:09,107 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619431713] [2021-11-06 14:26:09,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619431713] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:26:09,107 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:26:09,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 14:26:09,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596216057] [2021-11-06 14:26:09,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:26:09,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:26:09,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:26:09,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:26:09,109 INFO L87 Difference]: Start difference. First operand 6979 states and 9237 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 2 states have internal predecessors, (56), 0 states have call successors, (0), 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 14:26:09,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:26:09,321 INFO L93 Difference]: Finished difference Result 6979 states and 9237 transitions. [2021-11-06 14:26:09,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:26:09,323 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 2 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-11-06 14:26:09,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:26:09,349 INFO L225 Difference]: With dead ends: 6979 [2021-11-06 14:26:09,349 INFO L226 Difference]: Without dead ends: 6977 [2021-11-06 14:26:09,355 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 14:26:09,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6977 states. [2021-11-06 14:26:09,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6977 to 6977. [2021-11-06 14:26:09,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6977 states, 6841 states have (on average 1.316328022218974) internal successors, (9005), 6860 states have internal predecessors, (9005), 92 states have call successors, (92), 36 states have call predecessors, (92), 36 states have return successors, (138), 84 states have call predecessors, (138), 92 states have call successors, (138) [2021-11-06 14:26:09,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6977 states to 6977 states and 9235 transitions. [2021-11-06 14:26:09,557 INFO L78 Accepts]: Start accepts. Automaton has 6977 states and 9235 transitions. Word has length 56 [2021-11-06 14:26:09,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:26:09,557 INFO L470 AbstractCegarLoop]: Abstraction has 6977 states and 9235 transitions. [2021-11-06 14:26:09,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 2 states have internal predecessors, (56), 0 states have call successors, (0), 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 14:26:09,557 INFO L276 IsEmpty]: Start isEmpty. Operand 6977 states and 9235 transitions. [2021-11-06 14:26:09,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-06 14:26:09,559 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:26:09,559 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] [2021-11-06 14:26:09,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 14:26:09,560 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-06 14:26:09,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:26:09,560 INFO L85 PathProgramCache]: Analyzing trace with hash -621194066, now seen corresponding path program 1 times [2021-11-06 14:26:09,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:26:09,561 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342651882] [2021-11-06 14:26:09,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:26:09,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:26:09,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:26:09,800 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 14:26:09,800 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:26:09,800 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342651882] [2021-11-06 14:26:09,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342651882] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:26:09,801 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:26:09,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 14:26:09,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14162457] [2021-11-06 14:26:09,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:26:09,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:26:09,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:26:09,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:26:09,802 INFO L87 Difference]: Start difference. First operand 6977 states and 9235 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 2 states have internal predecessors, (57), 0 states have call successors, (0), 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 14:26:09,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:26:09,918 INFO L93 Difference]: Finished difference Result 6977 states and 9235 transitions. [2021-11-06 14:26:09,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:26:09,918 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 2 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2021-11-06 14:26:09,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:26:09,943 INFO L225 Difference]: With dead ends: 6977 [2021-11-06 14:26:09,943 INFO L226 Difference]: Without dead ends: 6975 [2021-11-06 14:26:09,948 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 14:26:09,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6975 states. [2021-11-06 14:26:10,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6975 to 6975. [2021-11-06 14:26:10,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6975 states, 6840 states have (on average 1.3162280701754385) internal successors, (9003), 6858 states have internal predecessors, (9003), 92 states have call successors, (92), 36 states have call predecessors, (92), 36 states have return successors, (138), 84 states have call predecessors, (138), 92 states have call successors, (138) [2021-11-06 14:26:10,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6975 states to 6975 states and 9233 transitions. [2021-11-06 14:26:10,150 INFO L78 Accepts]: Start accepts. Automaton has 6975 states and 9233 transitions. Word has length 57 [2021-11-06 14:26:10,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:26:10,151 INFO L470 AbstractCegarLoop]: Abstraction has 6975 states and 9233 transitions. [2021-11-06 14:26:10,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 2 states have internal predecessors, (57), 0 states have call successors, (0), 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 14:26:10,151 INFO L276 IsEmpty]: Start isEmpty. Operand 6975 states and 9233 transitions. [2021-11-06 14:26:10,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-06 14:26:10,153 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:26:10,153 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] [2021-11-06 14:26:10,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 14:26:10,154 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-06 14:26:10,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:26:10,154 INFO L85 PathProgramCache]: Analyzing trace with hash -2077142520, now seen corresponding path program 1 times [2021-11-06 14:26:10,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:26:10,155 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983726252] [2021-11-06 14:26:10,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:26:10,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:26:10,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:26:10,412 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 14:26:10,413 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:26:10,413 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983726252] [2021-11-06 14:26:10,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983726252] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:26:10,413 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:26:10,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 14:26:10,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282302815] [2021-11-06 14:26:10,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:26:10,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:26:10,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:26:10,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:26:10,415 INFO L87 Difference]: Start difference. First operand 6975 states and 9233 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 2 states have internal predecessors, (58), 0 states have call successors, (0), 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 14:26:10,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:26:10,801 INFO L93 Difference]: Finished difference Result 20574 states and 27566 transitions. [2021-11-06 14:26:10,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:26:10,802 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 2 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2021-11-06 14:26:10,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:26:10,845 INFO L225 Difference]: With dead ends: 20574 [2021-11-06 14:26:10,846 INFO L226 Difference]: Without dead ends: 13730 [2021-11-06 14:26:10,866 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 14:26:10,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13730 states. [2021-11-06 14:26:11,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13730 to 13555. [2021-11-06 14:26:11,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13555 states, 13296 states have (on average 1.31911853188929) internal successors, (17539), 13329 states have internal predecessors, (17539), 180 states have call successors, (180), 72 states have call predecessors, (180), 72 states have return successors, (402), 161 states have call predecessors, (402), 180 states have call successors, (402) [2021-11-06 14:26:11,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13555 states to 13555 states and 18121 transitions. [2021-11-06 14:26:11,222 INFO L78 Accepts]: Start accepts. Automaton has 13555 states and 18121 transitions. Word has length 58 [2021-11-06 14:26:11,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:26:11,223 INFO L470 AbstractCegarLoop]: Abstraction has 13555 states and 18121 transitions. [2021-11-06 14:26:11,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 2 states have internal predecessors, (58), 0 states have call successors, (0), 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 14:26:11,223 INFO L276 IsEmpty]: Start isEmpty. Operand 13555 states and 18121 transitions. [2021-11-06 14:26:11,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-06 14:26:11,225 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:26:11,226 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] [2021-11-06 14:26:11,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 14:26:11,226 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-06 14:26:11,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:26:11,226 INFO L85 PathProgramCache]: Analyzing trace with hash 33095672, now seen corresponding path program 1 times [2021-11-06 14:26:11,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:26:11,227 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322873197] [2021-11-06 14:26:11,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:26:11,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:26:11,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:26:11,478 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 14:26:11,479 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:26:11,479 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322873197] [2021-11-06 14:26:11,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322873197] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:26:11,479 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:26:11,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 14:26:11,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163626231] [2021-11-06 14:26:11,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:26:11,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:26:11,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:26:11,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:26:11,481 INFO L87 Difference]: Start difference. First operand 13555 states and 18121 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 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 14:26:11,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:26:11,768 INFO L93 Difference]: Finished difference Result 13555 states and 18121 transitions. [2021-11-06 14:26:11,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:26:11,768 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2021-11-06 14:26:11,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:26:11,803 INFO L225 Difference]: With dead ends: 13555 [2021-11-06 14:26:11,803 INFO L226 Difference]: Without dead ends: 13544 [2021-11-06 14:26:11,811 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 14:26:11,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13544 states. [2021-11-06 14:26:12,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13544 to 13544. [2021-11-06 14:26:12,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13544 states, 13286 states have (on average 1.3189823874755382) internal successors, (17524), 13318 states have internal predecessors, (17524), 180 states have call successors, (180), 72 states have call predecessors, (180), 72 states have return successors, (402), 161 states have call predecessors, (402), 180 states have call successors, (402) [2021-11-06 14:26:12,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13544 states to 13544 states and 18106 transitions. [2021-11-06 14:26:12,176 INFO L78 Accepts]: Start accepts. Automaton has 13544 states and 18106 transitions. Word has length 59 [2021-11-06 14:26:12,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:26:12,177 INFO L470 AbstractCegarLoop]: Abstraction has 13544 states and 18106 transitions. [2021-11-06 14:26:12,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 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 14:26:12,177 INFO L276 IsEmpty]: Start isEmpty. Operand 13544 states and 18106 transitions. [2021-11-06 14:26:12,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-06 14:26:12,180 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:26:12,181 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] [2021-11-06 14:26:12,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 14:26:12,181 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-06 14:26:12,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:26:12,181 INFO L85 PathProgramCache]: Analyzing trace with hash 572587737, now seen corresponding path program 1 times [2021-11-06 14:26:12,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:26:12,182 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612891082] [2021-11-06 14:26:12,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:26:12,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:26:12,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:26:12,415 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 14:26:12,416 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:26:12,416 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612891082] [2021-11-06 14:26:12,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612891082] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:26:12,416 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:26:12,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:26:12,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348353051] [2021-11-06 14:26:12,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:26:12,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:26:12,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:26:12,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:26:12,417 INFO L87 Difference]: Start difference. First operand 13544 states and 18106 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 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 14:26:13,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:26:13,280 INFO L93 Difference]: Finished difference Result 39620 states and 53051 transitions. [2021-11-06 14:26:13,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:26:13,280 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2021-11-06 14:26:13,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:26:13,364 INFO L225 Difference]: With dead ends: 39620 [2021-11-06 14:26:13,364 INFO L226 Difference]: Without dead ends: 26207 [2021-11-06 14:26:13,402 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 14:26:13,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26207 states. [2021-11-06 14:26:14,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26207 to 26164. [2021-11-06 14:26:14,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26164 states, 25666 states have (on average 1.3212031481337179) internal successors, (33910), 25722 states have internal predecessors, (33910), 348 states have call successors, (348), 144 states have call predecessors, (348), 144 states have return successors, (780), 313 states have call predecessors, (780), 348 states have call successors, (780) [2021-11-06 14:26:14,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26164 states to 26164 states and 35038 transitions. [2021-11-06 14:26:14,146 INFO L78 Accepts]: Start accepts. Automaton has 26164 states and 35038 transitions. Word has length 67 [2021-11-06 14:26:14,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:26:14,147 INFO L470 AbstractCegarLoop]: Abstraction has 26164 states and 35038 transitions. [2021-11-06 14:26:14,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 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 14:26:14,147 INFO L276 IsEmpty]: Start isEmpty. Operand 26164 states and 35038 transitions. [2021-11-06 14:26:14,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-06 14:26:14,155 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:26:14,155 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:26:14,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 14:26:14,156 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-06 14:26:14,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:26:14,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1004174795, now seen corresponding path program 1 times [2021-11-06 14:26:14,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:26:14,156 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094373275] [2021-11-06 14:26:14,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:26:14,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:26:14,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:26:14,374 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 14:26:14,375 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:26:14,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094373275] [2021-11-06 14:26:14,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094373275] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:26:14,376 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:26:14,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:26:14,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255525356] [2021-11-06 14:26:14,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:26:14,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:26:14,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:26:14,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:26:14,378 INFO L87 Difference]: Start difference. First operand 26164 states and 35038 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:26:15,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:26:15,308 INFO L93 Difference]: Finished difference Result 66269 states and 89517 transitions. [2021-11-06 14:26:15,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:26:15,308 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-06 14:26:15,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:26:15,427 INFO L225 Difference]: With dead ends: 66269 [2021-11-06 14:26:15,427 INFO L226 Difference]: Without dead ends: 40236 [2021-11-06 14:26:15,506 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 14:26:15,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40236 states. [2021-11-06 14:26:16,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40236 to 40152. [2021-11-06 14:26:16,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40152 states, 39258 states have (on average 1.3391665393040908) internal successors, (52573), 39366 states have internal predecessors, (52573), 600 states have call successors, (600), 288 states have call predecessors, (600), 288 states have return successors, (1344), 529 states have call predecessors, (1344), 600 states have call successors, (1344) [2021-11-06 14:26:16,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40152 states to 40152 states and 54517 transitions. [2021-11-06 14:26:16,650 INFO L78 Accepts]: Start accepts. Automaton has 40152 states and 54517 transitions. Word has length 96 [2021-11-06 14:26:16,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:26:16,651 INFO L470 AbstractCegarLoop]: Abstraction has 40152 states and 54517 transitions. [2021-11-06 14:26:16,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:26:16,651 INFO L276 IsEmpty]: Start isEmpty. Operand 40152 states and 54517 transitions. [2021-11-06 14:26:16,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-06 14:26:16,664 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:26:16,664 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:26:16,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 14:26:16,665 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-06 14:26:16,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:26:16,666 INFO L85 PathProgramCache]: Analyzing trace with hash 873586975, now seen corresponding path program 1 times [2021-11-06 14:26:16,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:26:16,666 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521237238] [2021-11-06 14:26:16,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:26:16,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:26:16,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:26:16,927 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 14:26:16,928 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:26:16,928 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521237238] [2021-11-06 14:26:16,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521237238] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:26:16,928 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:26:16,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 14:26:16,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924429120] [2021-11-06 14:26:16,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 14:26:16,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:26:16,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 14:26:16,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 14:26:16,930 INFO L87 Difference]: Start difference. First operand 40152 states and 54517 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 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 14:26:20,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:26:20,074 INFO L93 Difference]: Finished difference Result 80231 states and 108973 transitions. [2021-11-06 14:26:20,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 14:26:20,075 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2021-11-06 14:26:20,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:26:20,201 INFO L225 Difference]: With dead ends: 80231 [2021-11-06 14:26:20,202 INFO L226 Difference]: Without dead ends: 40198 [2021-11-06 14:26:20,279 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 14:26:20,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40198 states. [2021-11-06 14:26:21,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40198 to 40161. [2021-11-06 14:26:21,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40161 states, 39267 states have (on average 1.3389869355947743) internal successors, (52578), 39375 states have internal predecessors, (52578), 600 states have call successors, (600), 288 states have call predecessors, (600), 288 states have return successors, (1344), 529 states have call predecessors, (1344), 600 states have call successors, (1344) [2021-11-06 14:26:21,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40161 states to 40161 states and 54522 transitions. [2021-11-06 14:26:21,522 INFO L78 Accepts]: Start accepts. Automaton has 40161 states and 54522 transitions. Word has length 95 [2021-11-06 14:26:21,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:26:21,522 INFO L470 AbstractCegarLoop]: Abstraction has 40161 states and 54522 transitions. [2021-11-06 14:26:21,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 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 14:26:21,523 INFO L276 IsEmpty]: Start isEmpty. Operand 40161 states and 54522 transitions. [2021-11-06 14:26:21,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-06 14:26:21,532 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:26:21,532 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:26:21,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 14:26:21,533 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-06 14:26:21,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:26:21,533 INFO L85 PathProgramCache]: Analyzing trace with hash -2032334625, now seen corresponding path program 1 times [2021-11-06 14:26:21,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:26:21,533 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329961099] [2021-11-06 14:26:21,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:26:21,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:26:21,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:26:21,778 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 14:26:21,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:26:21,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329961099] [2021-11-06 14:26:21,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329961099] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:26:21,779 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:26:21,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:26:21,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352583395] [2021-11-06 14:26:21,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:26:21,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:26:21,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:26:21,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:26:21,781 INFO L87 Difference]: Start difference. First operand 40161 states and 54522 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:26:23,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:26:23,747 INFO L93 Difference]: Finished difference Result 102385 states and 138000 transitions. [2021-11-06 14:26:23,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:26:23,747 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2021-11-06 14:26:23,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:26:23,951 INFO L225 Difference]: With dead ends: 102385 [2021-11-06 14:26:23,951 INFO L226 Difference]: Without dead ends: 62355 [2021-11-06 14:26:24,014 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 14:26:24,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62355 states. [2021-11-06 14:26:25,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62355 to 62181. [2021-11-06 14:26:25,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62181 states, 60663 states have (on average 1.3210358867843661) internal successors, (80138), 60851 states have internal predecessors, (80138), 1008 states have call successors, (1008), 504 states have call predecessors, (1008), 504 states have return successors, (2256), 881 states have call predecessors, (2256), 1008 states have call successors, (2256) [2021-11-06 14:26:25,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62181 states to 62181 states and 83402 transitions. [2021-11-06 14:26:25,797 INFO L78 Accepts]: Start accepts. Automaton has 62181 states and 83402 transitions. Word has length 99 [2021-11-06 14:26:25,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:26:25,797 INFO L470 AbstractCegarLoop]: Abstraction has 62181 states and 83402 transitions. [2021-11-06 14:26:25,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:26:25,798 INFO L276 IsEmpty]: Start isEmpty. Operand 62181 states and 83402 transitions. [2021-11-06 14:26:25,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-06 14:26:25,807 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:26:25,807 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:26:25,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-06 14:26:25,807 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-06 14:26:25,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:26:25,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1623526599, now seen corresponding path program 1 times [2021-11-06 14:26:25,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:26:25,808 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132588359] [2021-11-06 14:26:25,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:26:25,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:26:25,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:26:26,113 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 14:26:26,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:26:26,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132588359] [2021-11-06 14:26:26,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132588359] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:26:26,114 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:26:26,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:26:26,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912214463] [2021-11-06 14:26:26,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:26:26,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:26:26,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:26:26,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:26:26,116 INFO L87 Difference]: Start difference. First operand 62181 states and 83402 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 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 14:26:30,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:26:30,355 INFO L93 Difference]: Finished difference Result 153047 states and 205476 transitions. [2021-11-06 14:26:30,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:26:30,356 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2021-11-06 14:26:30,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:26:30,618 INFO L225 Difference]: With dead ends: 153047 [2021-11-06 14:26:30,619 INFO L226 Difference]: Without dead ends: 90997 [2021-11-06 14:26:30,741 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 14:26:30,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90997 states. [2021-11-06 14:26:33,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90997 to 90945. [2021-11-06 14:26:33,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90945 states, 88779 states have (on average 1.3220468804559637) internal successors, (117370), 89039 states have internal predecessors, (117370), 1440 states have call successors, (1440), 720 states have call predecessors, (1440), 720 states have return successors, (3228), 1265 states have call predecessors, (3228), 1440 states have call successors, (3228) [2021-11-06 14:26:33,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90945 states to 90945 states and 122038 transitions. [2021-11-06 14:26:33,450 INFO L78 Accepts]: Start accepts. Automaton has 90945 states and 122038 transitions. Word has length 99 [2021-11-06 14:26:33,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:26:33,451 INFO L470 AbstractCegarLoop]: Abstraction has 90945 states and 122038 transitions. [2021-11-06 14:26:33,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 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 14:26:33,452 INFO L276 IsEmpty]: Start isEmpty. Operand 90945 states and 122038 transitions. [2021-11-06 14:26:33,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-06 14:26:33,460 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:26:33,461 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:26:33,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-06 14:26:33,461 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-06 14:26:33,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:26:33,461 INFO L85 PathProgramCache]: Analyzing trace with hash -716096722, now seen corresponding path program 1 times [2021-11-06 14:26:33,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:26:33,462 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025460714] [2021-11-06 14:26:33,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:26:33,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:26:33,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:26:33,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-06 14:26:33,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:26:33,848 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 14:26:33,848 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:26:33,848 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025460714] [2021-11-06 14:26:33,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025460714] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:26:33,849 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:26:33,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 14:26:33,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553292241] [2021-11-06 14:26:33,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 14:26:33,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:26:33,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 14:26:33,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-06 14:26:33,852 INFO L87 Difference]: Start difference. First operand 90945 states and 122038 transitions. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 4 states have internal predecessors, (95), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-06 14:26:43,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:26:43,068 INFO L93 Difference]: Finished difference Result 143584 states and 195094 transitions. [2021-11-06 14:26:43,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-06 14:26:43,069 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 4 states have internal predecessors, (95), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 101 [2021-11-06 14:26:43,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:26:43,610 INFO L225 Difference]: With dead ends: 143584 [2021-11-06 14:26:43,610 INFO L226 Difference]: Without dead ends: 143576 [2021-11-06 14:26:43,656 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-06 14:26:43,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143576 states. [2021-11-06 14:26:47,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143576 to 140061. [2021-11-06 14:26:47,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140061 states, 135963 states have (on average 1.320050307804329) internal successors, (179478), 136603 states have internal predecessors, (179478), 2292 states have call successors, (2292), 1080 states have call predecessors, (2292), 1800 states have return successors, (7740), 2537 states have call predecessors, (7740), 2292 states have call successors, (7740) [2021-11-06 14:26:47,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140061 states to 140061 states and 189510 transitions. [2021-11-06 14:26:47,930 INFO L78 Accepts]: Start accepts. Automaton has 140061 states and 189510 transitions. Word has length 101 [2021-11-06 14:26:47,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:26:47,930 INFO L470 AbstractCegarLoop]: Abstraction has 140061 states and 189510 transitions. [2021-11-06 14:26:47,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 4 states have internal predecessors, (95), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-06 14:26:47,931 INFO L276 IsEmpty]: Start isEmpty. Operand 140061 states and 189510 transitions. [2021-11-06 14:26:47,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-06 14:26:47,938 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:26:47,938 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:26:47,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-06 14:26:47,938 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [##fun~$Pointer$~TO~VOIDErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-06 14:26:47,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:26:47,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1533745172, now seen corresponding path program 1 times [2021-11-06 14:26:47,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:26:47,939 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127322124] [2021-11-06 14:26:47,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:26:47,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:26:48,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:26:48,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-06 14:26:48,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:26:48,235 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 14:26:48,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:26:48,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127322124] [2021-11-06 14:26:48,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127322124] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:26:48,236 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:26:48,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-06 14:26:48,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144122953] [2021-11-06 14:26:48,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 14:26:48,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:26:48,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 14:26:48,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-06 14:26:48,238 INFO L87 Difference]: Start difference. First operand 140061 states and 189510 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 6 states have internal predecessors, (95), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-06 14:27:14,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:27:14,925 INFO L93 Difference]: Finished difference Result 466302 states and 632518 transitions. [2021-11-06 14:27:14,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-06 14:27:14,926 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 6 states have internal predecessors, (95), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 101 [2021-11-06 14:27:14,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:27:16,366 INFO L225 Difference]: With dead ends: 466302 [2021-11-06 14:27:16,367 INFO L226 Difference]: Without dead ends: 407663 [2021-11-06 14:27:16,610 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-06 14:27:17,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407663 states.