./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--net--wireless--libertas--usb8xxx.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--net--wireless--libertas--usb8xxx.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 0b2aee7f7e67804021e49e5736bb0f9c1b2e215c216274214a3b77fa62ce19be --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 14:17:27,256 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 14:17:27,257 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 14:17:27,306 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 14:17:27,307 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 14:17:27,308 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 14:17:27,310 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 14:17:27,313 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 14:17:27,314 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 14:17:27,315 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 14:17:27,316 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 14:17:27,317 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 14:17:27,318 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 14:17:27,320 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 14:17:27,321 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 14:17:27,322 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 14:17:27,331 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 14:17:27,335 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 14:17:27,336 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 14:17:27,337 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 14:17:27,337 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 14:17:27,343 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 14:17:27,343 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 14:17:27,344 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 14:17:27,345 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 14:17:27,355 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 14:17:27,355 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 14:17:27,356 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 14:17:27,358 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 14:17:27,358 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 14:17:27,358 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 14:17:27,359 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 14:17:27,359 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 14:17:27,360 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 14:17:27,361 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 14:17:27,361 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 14:17:27,362 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 14:17:27,362 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 14:17:27,363 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 14:17:27,363 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 14:17:27,364 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 14:17:27,364 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 14:17:27,392 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 14:17:27,411 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 14:17:27,411 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 14:17:27,412 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 14:17:27,412 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 14:17:27,413 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 14:17:27,413 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 14:17:27,413 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 14:17:27,413 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 14:17:27,413 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 14:17:27,414 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 14:17:27,414 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 14:17:27,414 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 14:17:27,415 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 14:17:27,415 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 14:17:27,415 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 14:17:27,415 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 14:17:27,415 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 14:17:27,415 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 14:17:27,415 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 14:17:27,416 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 14:17:27,416 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 14:17:27,416 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 14:17:27,416 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 14:17:27,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 14:17:27,416 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 14:17:27,416 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 14:17:27,417 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 14:17:27,417 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 14:17:27,417 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0b2aee7f7e67804021e49e5736bb0f9c1b2e215c216274214a3b77fa62ce19be [2021-11-06 14:17:27,684 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 14:17:27,708 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 14:17:27,710 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 14:17:27,711 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 14:17:27,712 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 14:17:27,712 INFO L432 ainManager$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--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i [2021-11-06 14:17:27,757 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a20a7d9ca/cca031548f3846c3a66113a0bdea70cf/FLAG54f4d2443 [2021-11-06 14:17:28,379 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 14:17:28,380 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--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i [2021-11-06 14:17:28,415 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a20a7d9ca/cca031548f3846c3a66113a0bdea70cf/FLAG54f4d2443 [2021-11-06 14:17:28,748 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a20a7d9ca/cca031548f3846c3a66113a0bdea70cf [2021-11-06 14:17:28,750 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 14:17:28,751 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 14:17:28,761 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 14:17:28,761 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 14:17:28,763 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 14:17:28,764 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 02:17:28" (1/1) ... [2021-11-06 14:17:28,765 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@796a90ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:17:28, skipping insertion in model container [2021-11-06 14:17:28,768 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 02:17:28" (1/1) ... [2021-11-06 14:17:28,773 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 14:17:28,870 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 14:17:29,528 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--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i[182154,182167] [2021-11-06 14:17:29,825 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 14:17:29,841 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 14:17:29,953 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--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i[182154,182167] [2021-11-06 14:17:30,101 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 14:17:30,132 INFO L208 MainTranslator]: Completed translation [2021-11-06 14:17:30,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:17:30 WrapperNode [2021-11-06 14:17:30,133 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 14:17:30,135 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 14:17:30,135 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 14:17:30,135 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 14:17:30,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:17:30" (1/1) ... [2021-11-06 14:17:30,211 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:17:30" (1/1) ... [2021-11-06 14:17:30,336 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 14:17:30,337 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 14:17:30,337 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 14:17:30,337 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 14:17:30,343 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:17:30" (1/1) ... [2021-11-06 14:17:30,344 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:17:30" (1/1) ... [2021-11-06 14:17:30,368 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:17:30" (1/1) ... [2021-11-06 14:17:30,369 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:17:30" (1/1) ... [2021-11-06 14:17:30,525 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:17:30" (1/1) ... [2021-11-06 14:17:30,549 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:17:30" (1/1) ... [2021-11-06 14:17:30,565 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:17:30" (1/1) ... [2021-11-06 14:17:30,583 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 14:17:30,584 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 14:17:30,584 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 14:17:30,584 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 14:17:30,585 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:17:30" (1/1) ... [2021-11-06 14:17:30,591 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 14:17:30,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:17:30,608 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 14:17:30,613 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 14:17:30,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 14:17:30,632 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 14:17:30,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 14:17:30,632 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 14:17:30,633 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2021-11-06 14:17:30,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2021-11-06 14:17:30,633 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_submit_rx_urb_fwload [2021-11-06 14:17:30,633 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_submit_rx_urb_fwload [2021-11-06 14:17:30,633 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_submit_rx_urb [2021-11-06 14:17:30,633 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_submit_rx_urb [2021-11-06 14:17:30,633 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_receive_fwload [2021-11-06 14:17:30,633 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_receive_fwload [2021-11-06 14:17:30,634 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_send_fw_pkt [2021-11-06 14:17:30,634 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_send_fw_pkt [2021-11-06 14:17:30,634 INFO L130 BoogieDeclarations]: Found specification of procedure __if_usb_submit_rx_urb [2021-11-06 14:17:30,634 INFO L138 BoogieDeclarations]: Found implementation of procedure __if_usb_submit_rx_urb [2021-11-06 14:17:30,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 14:17:30,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 14:17:30,634 INFO L130 BoogieDeclarations]: Found specification of procedure usb_tx_block [2021-11-06 14:17:30,634 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_tx_block [2021-11-06 14:17:30,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 14:17:30,635 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 14:17:30,635 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-06 14:17:30,635 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-06 14:17:30,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-06 14:17:30,635 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 14:17:30,635 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_13 [2021-11-06 14:17:30,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_13 [2021-11-06 14:17:30,636 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_15 [2021-11-06 14:17:30,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_15 [2021-11-06 14:17:30,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 14:17:30,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 14:17:30,636 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_receive [2021-11-06 14:17:30,636 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_receive [2021-11-06 14:17:30,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 14:17:30,636 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 14:17:30,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 14:17:30,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 14:17:37,824 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 14:17:37,836 INFO L299 CfgBuilder]: Removed 687 assume(true) statements. [2021-11-06 14:17:37,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 02:17:37 BoogieIcfgContainer [2021-11-06 14:17:37,839 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 14:17:37,840 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 14:17:37,840 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 14:17:37,843 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 14:17:37,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 02:17:28" (1/3) ... [2021-11-06 14:17:37,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42acdccd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 02:17:37, skipping insertion in model container [2021-11-06 14:17:37,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:17:30" (2/3) ... [2021-11-06 14:17:37,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42acdccd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 02:17:37, skipping insertion in model container [2021-11-06 14:17:37,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 02:17:37" (3/3) ... [2021-11-06 14:17:37,844 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i [2021-11-06 14:17:37,849 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 14:17:37,850 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-06 14:17:37,888 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 14:17:37,893 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 14:17:37,893 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-06 14:17:37,925 INFO L276 IsEmpty]: Start isEmpty. Operand has 1205 states, 1168 states have (on average 1.5231164383561644) internal successors, (1779), 1175 states have internal predecessors, (1779), 20 states have call successors, (20), 11 states have call predecessors, (20), 11 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-06 14:17:37,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-06 14:17:37,929 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:17:37,929 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:17:37,930 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:17:37,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:17:37,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1408021568, now seen corresponding path program 1 times [2021-11-06 14:17:37,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:17:37,938 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041184763] [2021-11-06 14:17:37,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:17:37,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:17:38,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:17:38,371 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 14:17:38,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:17:38,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041184763] [2021-11-06 14:17:38,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041184763] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:17:38,373 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:17:38,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:17:38,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282507811] [2021-11-06 14:17:38,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:17:38,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:17:38,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:17:38,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:17:38,387 INFO L87 Difference]: Start difference. First operand has 1205 states, 1168 states have (on average 1.5231164383561644) internal successors, (1779), 1175 states have internal predecessors, (1779), 20 states have call successors, (20), 11 states have call predecessors, (20), 11 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 14:17:40,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:17:40,705 INFO L93 Difference]: Finished difference Result 3568 states and 5438 transitions. [2021-11-06 14:17:40,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:17:40,706 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 18 [2021-11-06 14:17:40,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:17:40,725 INFO L225 Difference]: With dead ends: 3568 [2021-11-06 14:17:40,726 INFO L226 Difference]: Without dead ends: 2342 [2021-11-06 14:17:40,735 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 14:17:40,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2342 states. [2021-11-06 14:17:40,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2342 to 2342. [2021-11-06 14:17:40,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2342 states, 2275 states have (on average 1.504175824175824) internal successors, (3422), 2283 states have internal predecessors, (3422), 40 states have call successors, (40), 22 states have call predecessors, (40), 22 states have return successors, (40), 38 states have call predecessors, (40), 40 states have call successors, (40) [2021-11-06 14:17:40,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2342 states to 2342 states and 3502 transitions. [2021-11-06 14:17:40,839 INFO L78 Accepts]: Start accepts. Automaton has 2342 states and 3502 transitions. Word has length 18 [2021-11-06 14:17:40,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:17:40,839 INFO L470 AbstractCegarLoop]: Abstraction has 2342 states and 3502 transitions. [2021-11-06 14:17:40,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 14:17:40,840 INFO L276 IsEmpty]: Start isEmpty. Operand 2342 states and 3502 transitions. [2021-11-06 14:17:40,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-06 14:17:40,841 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:17:40,841 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] [2021-11-06 14:17:40,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 14:17:40,842 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:17:40,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:17:40,842 INFO L85 PathProgramCache]: Analyzing trace with hash 610108826, now seen corresponding path program 1 times [2021-11-06 14:17:40,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:17:40,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024960535] [2021-11-06 14:17:40,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:17:40,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:17:40,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:17:41,021 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 14:17:41,022 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:17:41,022 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024960535] [2021-11-06 14:17:41,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024960535] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:17:41,022 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:17:41,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:17:41,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352816773] [2021-11-06 14:17:41,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:17:41,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:17:41,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:17:41,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:17:41,026 INFO L87 Difference]: Start difference. First operand 2342 states and 3502 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 14:17:41,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:17:41,106 INFO L93 Difference]: Finished difference Result 2372 states and 3530 transitions. [2021-11-06 14:17:41,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:17:41,107 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 25 [2021-11-06 14:17:41,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:17:41,116 INFO L225 Difference]: With dead ends: 2372 [2021-11-06 14:17:41,117 INFO L226 Difference]: Without dead ends: 2357 [2021-11-06 14:17:41,118 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 14:17:41,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2357 states. [2021-11-06 14:17:41,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2357 to 2342. [2021-11-06 14:17:41,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2342 states, 2275 states have (on average 1.5037362637362637) internal successors, (3421), 2283 states have internal predecessors, (3421), 40 states have call successors, (40), 22 states have call predecessors, (40), 22 states have return successors, (40), 38 states have call predecessors, (40), 40 states have call successors, (40) [2021-11-06 14:17:41,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2342 states to 2342 states and 3501 transitions. [2021-11-06 14:17:41,234 INFO L78 Accepts]: Start accepts. Automaton has 2342 states and 3501 transitions. Word has length 25 [2021-11-06 14:17:41,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:17:41,234 INFO L470 AbstractCegarLoop]: Abstraction has 2342 states and 3501 transitions. [2021-11-06 14:17:41,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 14:17:41,235 INFO L276 IsEmpty]: Start isEmpty. Operand 2342 states and 3501 transitions. [2021-11-06 14:17:41,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-06 14:17:41,239 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:17:41,239 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] [2021-11-06 14:17:41,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 14:17:41,239 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:17:41,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:17:41,243 INFO L85 PathProgramCache]: Analyzing trace with hash 610168408, now seen corresponding path program 1 times [2021-11-06 14:17:41,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:17:41,246 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503091774] [2021-11-06 14:17:41,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:17:41,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:17:41,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:17:41,532 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 14:17:41,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:17:41,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503091774] [2021-11-06 14:17:41,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503091774] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:17:41,533 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:17:41,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 14:17:41,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106054757] [2021-11-06 14:17:41,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:17:41,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:17:41,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:17:41,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:17:41,535 INFO L87 Difference]: Start difference. First operand 2342 states and 3501 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 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 14:17:41,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:17:41,699 INFO L93 Difference]: Finished difference Result 7002 states and 10596 transitions. [2021-11-06 14:17:41,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:17:41,700 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 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 25 [2021-11-06 14:17:41,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:17:41,716 INFO L225 Difference]: With dead ends: 7002 [2021-11-06 14:17:41,716 INFO L226 Difference]: Without dead ends: 4671 [2021-11-06 14:17:41,721 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 14:17:41,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4671 states. [2021-11-06 14:17:41,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4671 to 4659. [2021-11-06 14:17:41,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4659 states, 4530 states have (on average 1.5011037527593818) internal successors, (6800), 4542 states have internal predecessors, (6800), 80 states have call successors, (80), 44 states have call predecessors, (80), 44 states have return successors, (120), 76 states have call predecessors, (120), 80 states have call successors, (120) [2021-11-06 14:17:41,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4659 states to 4659 states and 7000 transitions. [2021-11-06 14:17:41,808 INFO L78 Accepts]: Start accepts. Automaton has 4659 states and 7000 transitions. Word has length 25 [2021-11-06 14:17:41,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:17:41,809 INFO L470 AbstractCegarLoop]: Abstraction has 4659 states and 7000 transitions. [2021-11-06 14:17:41,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 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 14:17:41,809 INFO L276 IsEmpty]: Start isEmpty. Operand 4659 states and 7000 transitions. [2021-11-06 14:17:41,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-06 14:17:41,810 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:17:41,810 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] [2021-11-06 14:17:41,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 14:17:41,810 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:17:41,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:17:41,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1735353912, now seen corresponding path program 1 times [2021-11-06 14:17:41,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:17:41,811 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463374023] [2021-11-06 14:17:41,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:17:41,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:17:41,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:17:41,991 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 14:17:41,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:17:41,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463374023] [2021-11-06 14:17:41,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463374023] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:17:41,991 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:17:41,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 14:17:41,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111325581] [2021-11-06 14:17:41,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:17:41,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:17:41,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:17:41,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:17:41,993 INFO L87 Difference]: Start difference. First operand 4659 states and 7000 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 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 14:17:42,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:17:42,179 INFO L93 Difference]: Finished difference Result 13937 states and 21301 transitions. [2021-11-06 14:17:42,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:17:42,179 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 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 26 [2021-11-06 14:17:42,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:17:42,210 INFO L225 Difference]: With dead ends: 13937 [2021-11-06 14:17:42,211 INFO L226 Difference]: Without dead ends: 9289 [2021-11-06 14:17:42,223 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 14:17:42,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9289 states. [2021-11-06 14:17:42,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9289 to 9278. [2021-11-06 14:17:42,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9278 states, 9025 states have (on average 1.4989473684210526) internal successors, (13528), 9045 states have internal predecessors, (13528), 160 states have call successors, (160), 88 states have call predecessors, (160), 88 states have return successors, (360), 152 states have call predecessors, (360), 160 states have call successors, (360) [2021-11-06 14:17:42,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9278 states to 9278 states and 14048 transitions. [2021-11-06 14:17:42,473 INFO L78 Accepts]: Start accepts. Automaton has 9278 states and 14048 transitions. Word has length 26 [2021-11-06 14:17:42,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:17:42,473 INFO L470 AbstractCegarLoop]: Abstraction has 9278 states and 14048 transitions. [2021-11-06 14:17:42,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 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 14:17:42,474 INFO L276 IsEmpty]: Start isEmpty. Operand 9278 states and 14048 transitions. [2021-11-06 14:17:42,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-06 14:17:42,474 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:17:42,474 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] [2021-11-06 14:17:42,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 14:17:42,475 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:17:42,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:17:42,475 INFO L85 PathProgramCache]: Analyzing trace with hash -2038601118, now seen corresponding path program 1 times [2021-11-06 14:17:42,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:17:42,476 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137078410] [2021-11-06 14:17:42,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:17:42,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:17:42,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:17:42,612 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 14:17:42,612 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:17:42,613 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137078410] [2021-11-06 14:17:42,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137078410] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:17:42,613 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:17:42,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 14:17:42,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362414942] [2021-11-06 14:17:42,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:17:42,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:17:42,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:17:42,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:17:42,614 INFO L87 Difference]: Start difference. First operand 9278 states and 14048 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 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 14:17:42,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:17:42,730 INFO L93 Difference]: Finished difference Result 9283 states and 14052 transitions. [2021-11-06 14:17:42,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:17:42,731 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 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 27 [2021-11-06 14:17:42,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:17:42,759 INFO L225 Difference]: With dead ends: 9283 [2021-11-06 14:17:42,759 INFO L226 Difference]: Without dead ends: 9281 [2021-11-06 14:17:42,762 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 14:17:42,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9281 states. [2021-11-06 14:17:42,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9281 to 9279. [2021-11-06 14:17:42,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9279 states, 9026 states have (on average 1.4988920895191669) internal successors, (13529), 9046 states have internal predecessors, (13529), 160 states have call successors, (160), 88 states have call predecessors, (160), 88 states have return successors, (360), 152 states have call predecessors, (360), 160 states have call successors, (360) [2021-11-06 14:17:42,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9279 states to 9279 states and 14049 transitions. [2021-11-06 14:17:42,927 INFO L78 Accepts]: Start accepts. Automaton has 9279 states and 14049 transitions. Word has length 27 [2021-11-06 14:17:42,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:17:42,927 INFO L470 AbstractCegarLoop]: Abstraction has 9279 states and 14049 transitions. [2021-11-06 14:17:42,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 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 14:17:42,927 INFO L276 IsEmpty]: Start isEmpty. Operand 9279 states and 14049 transitions. [2021-11-06 14:17:42,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-06 14:17:42,928 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:17:42,928 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] [2021-11-06 14:17:42,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 14:17:42,929 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:17:42,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:17:42,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1227877250, now seen corresponding path program 1 times [2021-11-06 14:17:42,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:17:42,929 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800265728] [2021-11-06 14:17:42,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:17:42,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:17:42,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:17:43,101 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 14:17:43,102 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:17:43,102 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800265728] [2021-11-06 14:17:43,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800265728] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:17:43,102 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:17:43,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 14:17:43,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037235397] [2021-11-06 14:17:43,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:17:43,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:17:43,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:17:43,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:17:43,104 INFO L87 Difference]: Start difference. First operand 9279 states and 14049 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 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 14:17:43,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:17:43,232 INFO L93 Difference]: Finished difference Result 9279 states and 14049 transitions. [2021-11-06 14:17:43,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:17:43,233 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 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 28 [2021-11-06 14:17:43,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:17:43,261 INFO L225 Difference]: With dead ends: 9279 [2021-11-06 14:17:43,261 INFO L226 Difference]: Without dead ends: 9277 [2021-11-06 14:17:43,266 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 14:17:43,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9277 states. [2021-11-06 14:17:43,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9277 to 9277. [2021-11-06 14:17:43,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9277 states, 9025 states have (on average 1.4988365650969528) internal successors, (13527), 9044 states have internal predecessors, (13527), 160 states have call successors, (160), 88 states have call predecessors, (160), 88 states have return successors, (360), 152 states have call predecessors, (360), 160 states have call successors, (360) [2021-11-06 14:17:43,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9277 states to 9277 states and 14047 transitions. [2021-11-06 14:17:43,486 INFO L78 Accepts]: Start accepts. Automaton has 9277 states and 14047 transitions. Word has length 28 [2021-11-06 14:17:43,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:17:43,486 INFO L470 AbstractCegarLoop]: Abstraction has 9277 states and 14047 transitions. [2021-11-06 14:17:43,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 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 14:17:43,487 INFO L276 IsEmpty]: Start isEmpty. Operand 9277 states and 14047 transitions. [2021-11-06 14:17:43,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-06 14:17:43,488 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:17:43,488 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] [2021-11-06 14:17:43,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 14:17:43,489 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:17:43,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:17:43,489 INFO L85 PathProgramCache]: Analyzing trace with hash -590508436, now seen corresponding path program 1 times [2021-11-06 14:17:43,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:17:43,489 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142423649] [2021-11-06 14:17:43,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:17:43,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:17:43,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:17:43,609 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 14:17:43,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:17:43,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142423649] [2021-11-06 14:17:43,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142423649] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:17:43,610 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:17:43,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 14:17:43,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506835235] [2021-11-06 14:17:43,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:17:43,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:17:43,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:17:43,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:17:43,611 INFO L87 Difference]: Start difference. First operand 9277 states and 14047 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 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 14:17:43,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:17:43,724 INFO L93 Difference]: Finished difference Result 9277 states and 14047 transitions. [2021-11-06 14:17:43,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:17:43,724 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 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 29 [2021-11-06 14:17:43,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:17:43,747 INFO L225 Difference]: With dead ends: 9277 [2021-11-06 14:17:43,748 INFO L226 Difference]: Without dead ends: 9268 [2021-11-06 14:17:43,751 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 14:17:43,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9268 states. [2021-11-06 14:17:43,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9268 to 9268. [2021-11-06 14:17:43,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9268 states, 9017 states have (on average 1.4988355328823333) internal successors, (13515), 9035 states have internal predecessors, (13515), 160 states have call successors, (160), 88 states have call predecessors, (160), 88 states have return successors, (360), 152 states have call predecessors, (360), 160 states have call successors, (360) [2021-11-06 14:17:43,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9268 states to 9268 states and 14035 transitions. [2021-11-06 14:17:43,921 INFO L78 Accepts]: Start accepts. Automaton has 9268 states and 14035 transitions. Word has length 29 [2021-11-06 14:17:43,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:17:43,922 INFO L470 AbstractCegarLoop]: Abstraction has 9268 states and 14035 transitions. [2021-11-06 14:17:43,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 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 14:17:43,922 INFO L276 IsEmpty]: Start isEmpty. Operand 9268 states and 14035 transitions. [2021-11-06 14:17:43,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-06 14:17:43,927 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:17:43,927 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:17:43,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 14:17:43,928 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:17:43,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:17:43,928 INFO L85 PathProgramCache]: Analyzing trace with hash 2145831980, now seen corresponding path program 1 times [2021-11-06 14:17:43,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:17:43,928 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367608844] [2021-11-06 14:17:43,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:17:43,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:17:43,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:17:44,026 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 14:17:44,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:17:44,026 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367608844] [2021-11-06 14:17:44,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367608844] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:17:44,027 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:17:44,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:17:44,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101298252] [2021-11-06 14:17:44,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:17:44,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:17:44,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:17:44,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:17:44,028 INFO L87 Difference]: Start difference. First operand 9268 states and 14035 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:17:44,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:17:44,256 INFO L93 Difference]: Finished difference Result 19191 states and 29109 transitions. [2021-11-06 14:17:44,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:17:44,256 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-06 14:17:44,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:17:44,279 INFO L225 Difference]: With dead ends: 19191 [2021-11-06 14:17:44,279 INFO L226 Difference]: Without dead ends: 9934 [2021-11-06 14:17:44,296 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 14:17:44,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9934 states. [2021-11-06 14:17:44,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9934 to 9912. [2021-11-06 14:17:44,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9912 states, 9661 states have (on average 1.5048131663388884) internal successors, (14538), 9679 states have internal predecessors, (14538), 160 states have call successors, (160), 88 states have call predecessors, (160), 88 states have return successors, (360), 152 states have call predecessors, (360), 160 states have call successors, (360) [2021-11-06 14:17:44,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9912 states to 9912 states and 15058 transitions. [2021-11-06 14:17:44,474 INFO L78 Accepts]: Start accepts. Automaton has 9912 states and 15058 transitions. Word has length 78 [2021-11-06 14:17:44,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:17:44,474 INFO L470 AbstractCegarLoop]: Abstraction has 9912 states and 15058 transitions. [2021-11-06 14:17:44,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:17:44,474 INFO L276 IsEmpty]: Start isEmpty. Operand 9912 states and 15058 transitions. [2021-11-06 14:17:44,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-06 14:17:44,480 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:17:44,480 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:17:44,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 14:17:44,480 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:17:44,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:17:44,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1101740426, now seen corresponding path program 1 times [2021-11-06 14:17:44,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:17:44,481 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709034885] [2021-11-06 14:17:44,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:17:44,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:17:44,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:17:44,592 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 14:17:44,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:17:44,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709034885] [2021-11-06 14:17:44,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709034885] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:17:44,593 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:17:44,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:17:44,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029035130] [2021-11-06 14:17:44,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:17:44,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:17:44,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:17:44,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:17:44,594 INFO L87 Difference]: Start difference. First operand 9912 states and 15058 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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 14:17:44,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:17:44,728 INFO L93 Difference]: Finished difference Result 19821 states and 30119 transitions. [2021-11-06 14:17:44,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:17:44,728 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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 86 [2021-11-06 14:17:44,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:17:44,750 INFO L225 Difference]: With dead ends: 19821 [2021-11-06 14:17:44,750 INFO L226 Difference]: Without dead ends: 9920 [2021-11-06 14:17:44,768 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 14:17:44,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9920 states. [2021-11-06 14:17:45,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9920 to 9920. [2021-11-06 14:17:45,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9920 states, 9669 states have (on average 1.5043954907436137) internal successors, (14546), 9687 states have internal predecessors, (14546), 160 states have call successors, (160), 88 states have call predecessors, (160), 88 states have return successors, (360), 152 states have call predecessors, (360), 160 states have call successors, (360) [2021-11-06 14:17:45,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9920 states to 9920 states and 15066 transitions. [2021-11-06 14:17:45,028 INFO L78 Accepts]: Start accepts. Automaton has 9920 states and 15066 transitions. Word has length 86 [2021-11-06 14:17:45,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:17:45,029 INFO L470 AbstractCegarLoop]: Abstraction has 9920 states and 15066 transitions. [2021-11-06 14:17:45,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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 14:17:45,029 INFO L276 IsEmpty]: Start isEmpty. Operand 9920 states and 15066 transitions. [2021-11-06 14:17:45,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-06 14:17:45,034 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:17:45,034 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:17:45,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 14:17:45,034 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:17:45,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:17:45,035 INFO L85 PathProgramCache]: Analyzing trace with hash 707373640, now seen corresponding path program 1 times [2021-11-06 14:17:45,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:17:45,035 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447813150] [2021-11-06 14:17:45,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:17:45,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:17:45,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:17:45,213 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 14:17:45,213 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:17:45,213 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447813150] [2021-11-06 14:17:45,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447813150] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:17:45,213 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701389672] [2021-11-06 14:17:45,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:17:45,214 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:17:45,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:17:45,228 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 14:17:45,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-06 14:17:45,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:17:46,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 2832 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-06 14:17:46,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 14:17:46,267 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 14:17:46,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701389672] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:17:46,267 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 14:17:46,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-06 14:17:46,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929680380] [2021-11-06 14:17:46,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 14:17:46,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:17:46,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 14:17:46,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-06 14:17:46,269 INFO L87 Difference]: Start difference. First operand 9920 states and 15066 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 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 14:17:48,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:17:48,793 INFO L93 Difference]: Finished difference Result 30746 states and 46680 transitions. [2021-11-06 14:17:48,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 14:17:48,794 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 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 86 [2021-11-06 14:17:48,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:17:48,850 INFO L225 Difference]: With dead ends: 30746 [2021-11-06 14:17:48,850 INFO L226 Difference]: Without dead ends: 20837 [2021-11-06 14:17:48,875 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-06 14:17:48,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20837 states. [2021-11-06 14:17:49,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20837 to 10432. [2021-11-06 14:17:49,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10432 states, 10173 states have (on average 1.502211736950752) internal successors, (15282), 10191 states have internal predecessors, (15282), 168 states have call successors, (168), 88 states have call predecessors, (168), 88 states have return successors, (378), 160 states have call predecessors, (378), 168 states have call successors, (378) [2021-11-06 14:17:49,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10432 states to 10432 states and 15828 transitions. [2021-11-06 14:17:49,250 INFO L78 Accepts]: Start accepts. Automaton has 10432 states and 15828 transitions. Word has length 86 [2021-11-06 14:17:49,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:17:49,251 INFO L470 AbstractCegarLoop]: Abstraction has 10432 states and 15828 transitions. [2021-11-06 14:17:49,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 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 14:17:49,251 INFO L276 IsEmpty]: Start isEmpty. Operand 10432 states and 15828 transitions. [2021-11-06 14:17:49,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-06 14:17:49,259 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:17:49,259 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:17:49,284 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-06 14:17:49,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-06 14:17:49,478 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:17:49,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:17:49,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1408438218, now seen corresponding path program 1 times [2021-11-06 14:17:49,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:17:49,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69803131] [2021-11-06 14:17:49,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:17:49,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:17:49,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:17:49,704 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 14:17:49,704 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:17:49,704 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69803131] [2021-11-06 14:17:49,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69803131] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:17:49,705 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:17:49,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 14:17:49,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410340612] [2021-11-06 14:17:49,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 14:17:49,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:17:49,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 14:17:49,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 14:17:49,706 INFO L87 Difference]: Start difference. First operand 10432 states and 15828 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 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 14:17:50,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:17:50,069 INFO L93 Difference]: Finished difference Result 26486 states and 40212 transitions. [2021-11-06 14:17:50,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 14:17:50,070 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 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 86 [2021-11-06 14:17:50,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:17:50,109 INFO L225 Difference]: With dead ends: 26486 [2021-11-06 14:17:50,110 INFO L226 Difference]: Without dead ends: 16017 [2021-11-06 14:17:50,133 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:17:50,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16017 states. [2021-11-06 14:17:50,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16017 to 10432. [2021-11-06 14:17:50,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10432 states, 10173 states have (on average 1.4998525508699498) internal successors, (15258), 10191 states have internal predecessors, (15258), 168 states have call successors, (168), 88 states have call predecessors, (168), 88 states have return successors, (378), 160 states have call predecessors, (378), 168 states have call successors, (378) [2021-11-06 14:17:50,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10432 states to 10432 states and 15804 transitions. [2021-11-06 14:17:50,579 INFO L78 Accepts]: Start accepts. Automaton has 10432 states and 15804 transitions. Word has length 86 [2021-11-06 14:17:50,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:17:50,580 INFO L470 AbstractCegarLoop]: Abstraction has 10432 states and 15804 transitions. [2021-11-06 14:17:50,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 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 14:17:50,580 INFO L276 IsEmpty]: Start isEmpty. Operand 10432 states and 15804 transitions. [2021-11-06 14:17:50,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-06 14:17:50,589 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:17:50,589 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:17:50,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-06 14:17:50,589 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:17:50,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:17:50,590 INFO L85 PathProgramCache]: Analyzing trace with hash 89566598, now seen corresponding path program 1 times [2021-11-06 14:17:50,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:17:50,590 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533083524] [2021-11-06 14:17:50,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:17:50,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:17:50,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:17:50,870 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 14:17:50,870 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:17:50,870 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533083524] [2021-11-06 14:17:50,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533083524] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:17:50,871 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:17:50,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-06 14:17:50,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463930691] [2021-11-06 14:17:50,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 14:17:50,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:17:50,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 14:17:50,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-06 14:17:50,872 INFO L87 Difference]: Start difference. First operand 10432 states and 15804 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 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 14:17:51,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:17:51,802 INFO L93 Difference]: Finished difference Result 40594 states and 61696 transitions. [2021-11-06 14:17:51,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-06 14:17:51,803 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 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 88 [2021-11-06 14:17:51,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:17:51,873 INFO L225 Difference]: With dead ends: 40594 [2021-11-06 14:17:51,873 INFO L226 Difference]: Without dead ends: 30173 [2021-11-06 14:17:51,900 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-11-06 14:17:51,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30173 states. [2021-11-06 14:17:52,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30173 to 10472. [2021-11-06 14:17:52,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10472 states, 10213 states have (on average 1.4978948399099188) internal successors, (15298), 10231 states have internal predecessors, (15298), 168 states have call successors, (168), 88 states have call predecessors, (168), 88 states have return successors, (378), 160 states have call predecessors, (378), 168 states have call successors, (378) [2021-11-06 14:17:52,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10472 states to 10472 states and 15844 transitions. [2021-11-06 14:17:52,360 INFO L78 Accepts]: Start accepts. Automaton has 10472 states and 15844 transitions. Word has length 88 [2021-11-06 14:17:52,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:17:52,360 INFO L470 AbstractCegarLoop]: Abstraction has 10472 states and 15844 transitions. [2021-11-06 14:17:52,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 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 14:17:52,360 INFO L276 IsEmpty]: Start isEmpty. Operand 10472 states and 15844 transitions. [2021-11-06 14:17:52,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-06 14:17:52,365 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:17:52,366 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:17:52,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-06 14:17:52,366 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:17:52,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:17:52,367 INFO L85 PathProgramCache]: Analyzing trace with hash 141524994, now seen corresponding path program 1 times [2021-11-06 14:17:52,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:17:52,367 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562337889] [2021-11-06 14:17:52,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:17:52,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:17:52,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:17:52,570 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 14:17:52,570 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:17:52,570 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562337889] [2021-11-06 14:17:52,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562337889] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:17:52,571 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:17:52,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 14:17:52,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276402370] [2021-11-06 14:17:52,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 14:17:52,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:17:52,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 14:17:52,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 14:17:52,572 INFO L87 Difference]: Start difference. First operand 10472 states and 15844 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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 14:17:53,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:17:53,324 INFO L93 Difference]: Finished difference Result 35568 states and 53910 transitions. [2021-11-06 14:17:53,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 14:17:53,324 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-11-06 14:17:53,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:17:53,373 INFO L225 Difference]: With dead ends: 35568 [2021-11-06 14:17:53,373 INFO L226 Difference]: Without dead ends: 25107 [2021-11-06 14:17:53,388 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:17:53,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25107 states. [2021-11-06 14:17:53,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25107 to 10536. [2021-11-06 14:17:53,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10536 states, 10277 states have (on average 1.4963510752165028) internal successors, (15378), 10295 states have internal predecessors, (15378), 168 states have call successors, (168), 88 states have call predecessors, (168), 88 states have return successors, (378), 160 states have call predecessors, (378), 168 states have call successors, (378) [2021-11-06 14:17:53,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10536 states to 10536 states and 15924 transitions. [2021-11-06 14:17:53,740 INFO L78 Accepts]: Start accepts. Automaton has 10536 states and 15924 transitions. Word has length 90 [2021-11-06 14:17:53,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:17:53,740 INFO L470 AbstractCegarLoop]: Abstraction has 10536 states and 15924 transitions. [2021-11-06 14:17:53,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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 14:17:53,740 INFO L276 IsEmpty]: Start isEmpty. Operand 10536 states and 15924 transitions. [2021-11-06 14:17:53,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-06 14:17:53,747 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:17:53,747 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:17:53,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-06 14:17:53,747 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:17:53,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:17:53,748 INFO L85 PathProgramCache]: Analyzing trace with hash -474182210, now seen corresponding path program 1 times [2021-11-06 14:17:53,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:17:53,748 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481567539] [2021-11-06 14:17:53,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:17:53,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:17:53,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:17:53,984 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-06 14:17:53,984 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:17:53,984 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481567539] [2021-11-06 14:17:53,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481567539] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:17:53,985 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:17:53,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:17:53,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279377540] [2021-11-06 14:17:53,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:17:53,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:17:53,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:17:53,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:17:53,987 INFO L87 Difference]: Start difference. First operand 10536 states and 15924 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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 14:17:54,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:17:54,226 INFO L93 Difference]: Finished difference Result 21064 states and 31839 transitions. [2021-11-06 14:17:54,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:17:54,227 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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 92 [2021-11-06 14:17:54,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:17:54,250 INFO L225 Difference]: With dead ends: 21064 [2021-11-06 14:17:54,250 INFO L226 Difference]: Without dead ends: 10537 [2021-11-06 14:17:54,266 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 14:17:54,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10537 states. [2021-11-06 14:17:54,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10537 to 10537. [2021-11-06 14:17:54,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10537 states, 10278 states have (on average 1.4963027826425375) internal successors, (15379), 10296 states have internal predecessors, (15379), 168 states have call successors, (168), 88 states have call predecessors, (168), 88 states have return successors, (378), 160 states have call predecessors, (378), 168 states have call successors, (378) [2021-11-06 14:17:54,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10537 states to 10537 states and 15925 transitions. [2021-11-06 14:17:54,628 INFO L78 Accepts]: Start accepts. Automaton has 10537 states and 15925 transitions. Word has length 92 [2021-11-06 14:17:54,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:17:54,629 INFO L470 AbstractCegarLoop]: Abstraction has 10537 states and 15925 transitions. [2021-11-06 14:17:54,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 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 14:17:54,629 INFO L276 IsEmpty]: Start isEmpty. Operand 10537 states and 15925 transitions. [2021-11-06 14:17:54,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-06 14:17:54,634 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:17:54,634 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:17:54,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-06 14:17:54,635 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:17:54,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:17:54,636 INFO L85 PathProgramCache]: Analyzing trace with hash 627349948, now seen corresponding path program 1 times [2021-11-06 14:17:54,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:17:54,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808249824] [2021-11-06 14:17:54,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:17:54,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:17:54,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:17:54,863 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-06 14:17:54,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:17:54,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808249824] [2021-11-06 14:17:54,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808249824] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:17:54,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113135964] [2021-11-06 14:17:54,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:17:54,864 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:17:54,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:17:54,881 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 14:17:54,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-06 14:21:53,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:21:53,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 2887 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-06 14:21:53,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 14:21:54,091 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-06 14:21:54,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113135964] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:21:54,092 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 14:21:54,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-06 14:21:54,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559635099] [2021-11-06 14:21:54,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:21:54,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:21:54,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:21:54,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:21:54,097 INFO L87 Difference]: Start difference. First operand 10537 states and 15925 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:21:54,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:21:54,399 INFO L93 Difference]: Finished difference Result 21937 states and 33143 transitions. [2021-11-06 14:21:54,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:21:54,400 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-11-06 14:21:54,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:21:54,428 INFO L225 Difference]: With dead ends: 21937 [2021-11-06 14:21:54,429 INFO L226 Difference]: Without dead ends: 11412 [2021-11-06 14:21:54,445 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:21:54,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11412 states. [2021-11-06 14:21:54,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11412 to 10537. [2021-11-06 14:21:54,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10537 states, 10278 states have (on average 1.495524421093598) internal successors, (15371), 10296 states have internal predecessors, (15371), 168 states have call successors, (168), 88 states have call predecessors, (168), 88 states have return successors, (378), 160 states have call predecessors, (378), 168 states have call successors, (378) [2021-11-06 14:21:54,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10537 states to 10537 states and 15917 transitions. [2021-11-06 14:21:54,855 INFO L78 Accepts]: Start accepts. Automaton has 10537 states and 15917 transitions. Word has length 93 [2021-11-06 14:21:54,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:21:54,856 INFO L470 AbstractCegarLoop]: Abstraction has 10537 states and 15917 transitions. [2021-11-06 14:21:54,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:21:54,856 INFO L276 IsEmpty]: Start isEmpty. Operand 10537 states and 15917 transitions. [2021-11-06 14:21:54,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-06 14:21:54,861 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:21:54,861 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:21:54,948 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-06 14:21:55,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-06 14:21:55,081 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:21:55,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:21:55,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1911294596, now seen corresponding path program 1 times [2021-11-06 14:21:55,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:21:55,082 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771090660] [2021-11-06 14:21:55,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:21:55,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:21:55,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:21:55,366 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-06 14:21:55,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:21:55,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771090660] [2021-11-06 14:21:55,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771090660] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:21:55,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57055647] [2021-11-06 14:21:55,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:21:55,367 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:21:55,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:21:55,369 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 14:21:55,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-06 14:28:20,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:28:20,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 2910 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-06 14:28:20,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 14:28:21,022 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-06 14:28:21,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57055647] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:28:21,022 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 14:28:21,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-11-06 14:28:21,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351907349] [2021-11-06 14:28:21,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 14:28:21,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:28:21,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 14:28:21,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:28:21,023 INFO L87 Difference]: Start difference. First operand 10537 states and 15917 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:28:21,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:28:21,403 INFO L93 Difference]: Finished difference Result 21065 states and 31824 transitions. [2021-11-06 14:28:21,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 14:28:21,404 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-06 14:28:21,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:28:21,431 INFO L225 Difference]: With dead ends: 21065 [2021-11-06 14:28:21,431 INFO L226 Difference]: Without dead ends: 10538 [2021-11-06 14:28:21,450 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:28:21,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10538 states. [2021-11-06 14:28:21,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10538 to 10538. [2021-11-06 14:28:21,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10538 states, 10279 states have (on average 1.495476213639459) internal successors, (15372), 10297 states have internal predecessors, (15372), 168 states have call successors, (168), 88 states have call predecessors, (168), 88 states have return successors, (378), 160 states have call predecessors, (378), 168 states have call successors, (378) [2021-11-06 14:28:21,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10538 states to 10538 states and 15918 transitions. [2021-11-06 14:28:21,808 INFO L78 Accepts]: Start accepts. Automaton has 10538 states and 15918 transitions. Word has length 94 [2021-11-06 14:28:21,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:28:21,808 INFO L470 AbstractCegarLoop]: Abstraction has 10538 states and 15918 transitions. [2021-11-06 14:28:21,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:28:21,808 INFO L276 IsEmpty]: Start isEmpty. Operand 10538 states and 15918 transitions. [2021-11-06 14:28:21,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-06 14:28:21,814 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:28:21,815 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-06 14:28:21,936 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-06 14:28:22,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:28:22,035 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:28:22,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:28:22,036 INFO L85 PathProgramCache]: Analyzing trace with hash -373223678, now seen corresponding path program 2 times [2021-11-06 14:28:22,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:28:22,036 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181363395] [2021-11-06 14:28:22,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:28:22,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:28:22,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:28:22,294 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-06 14:28:22,295 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:28:22,295 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181363395] [2021-11-06 14:28:22,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181363395] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:28:22,295 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420766317] [2021-11-06 14:28:22,295 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-06 14:28:22,296 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:28:22,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:28:22,297 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 14:28:22,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process Killed by 15