./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--input--misc--ims-pcu.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--input--misc--ims-pcu.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 7f108eec0e6f75d7c7724c96156fb3bec5ecbcd0f2a8def1b3ebffa34d9deb6c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 13:59:50,478 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 13:59:50,480 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 13:59:50,521 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 13:59:50,522 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 13:59:50,525 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 13:59:50,526 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 13:59:50,537 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 13:59:50,539 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 13:59:50,543 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 13:59:50,544 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 13:59:50,545 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 13:59:50,545 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 13:59:50,548 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 13:59:50,549 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 13:59:50,553 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 13:59:50,554 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 13:59:50,554 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 13:59:50,556 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 13:59:50,561 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 13:59:50,562 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 13:59:50,563 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 13:59:50,564 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 13:59:50,568 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 13:59:50,574 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 13:59:50,575 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 13:59:50,575 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 13:59:50,576 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 13:59:50,576 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 13:59:50,577 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 13:59:50,577 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 13:59:50,578 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 13:59:50,579 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 13:59:50,580 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 13:59:50,582 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 13:59:50,582 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 13:59:50,582 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 13:59:50,582 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 13:59:50,583 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 13:59:50,583 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 13:59:50,584 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 13:59:50,586 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 13:59:50,621 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 13:59:50,621 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 13:59:50,622 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 13:59:50,622 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 13:59:50,623 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 13:59:50,623 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 13:59:50,624 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 13:59:50,624 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 13:59:50,624 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 13:59:50,624 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 13:59:50,625 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 13:59:50,625 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 13:59:50,625 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 13:59:50,626 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 13:59:50,626 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 13:59:50,626 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 13:59:50,626 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 13:59:50,626 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 13:59:50,626 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 13:59:50,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 13:59:50,627 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 13:59:50,627 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 13:59:50,627 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 13:59:50,627 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 13:59:50,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 13:59:50,628 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 13:59:50,628 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 13:59:50,628 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 13:59:50,628 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 13:59:50,628 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f108eec0e6f75d7c7724c96156fb3bec5ecbcd0f2a8def1b3ebffa34d9deb6c [2021-11-06 13:59:50,865 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 13:59:50,885 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 13:59:50,887 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 13:59:50,888 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 13:59:50,889 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 13:59:50,890 INFO L432 ainManager$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--input--misc--ims-pcu.ko-entry_point.cil.out.i [2021-11-06 13:59:50,940 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b42e67872/9085458b813044978cdf058309d40ade/FLAG08edf8312 [2021-11-06 13:59:51,656 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 13:59:51,657 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--input--misc--ims-pcu.ko-entry_point.cil.out.i [2021-11-06 13:59:51,692 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b42e67872/9085458b813044978cdf058309d40ade/FLAG08edf8312 [2021-11-06 13:59:51,941 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b42e67872/9085458b813044978cdf058309d40ade [2021-11-06 13:59:51,944 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 13:59:51,945 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 13:59:51,947 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 13:59:51,948 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 13:59:51,950 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 13:59:51,951 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 01:59:51" (1/1) ... [2021-11-06 13:59:51,952 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a23ca4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:59:51, skipping insertion in model container [2021-11-06 13:59:51,952 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 01:59:51" (1/1) ... [2021-11-06 13:59:51,957 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 13:59:52,046 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 13:59:52,810 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--input--misc--ims-pcu.ko-entry_point.cil.out.i[114617,114630] [2021-11-06 13:59:53,288 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 13:59:53,327 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 13:59:53,447 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--input--misc--ims-pcu.ko-entry_point.cil.out.i[114617,114630] [2021-11-06 13:59:53,602 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 13:59:53,677 INFO L208 MainTranslator]: Completed translation [2021-11-06 13:59:53,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:59:53 WrapperNode [2021-11-06 13:59:53,678 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 13:59:53,680 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 13:59:53,681 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 13:59:53,681 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 13:59:53,687 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:59:53" (1/1) ... [2021-11-06 13:59:53,767 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:59:53" (1/1) ... [2021-11-06 13:59:54,287 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 13:59:54,288 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 13:59:54,288 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 13:59:54,288 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 13:59:54,296 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:59:53" (1/1) ... [2021-11-06 13:59:54,311 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:59:53" (1/1) ... [2021-11-06 13:59:54,585 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:59:53" (1/1) ... [2021-11-06 13:59:54,594 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:59:53" (1/1) ... [2021-11-06 13:59:54,963 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:59:53" (1/1) ... [2021-11-06 13:59:55,027 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:59:53" (1/1) ... [2021-11-06 13:59:55,093 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:59:53" (1/1) ... [2021-11-06 13:59:55,187 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 13:59:55,188 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 13:59:55,189 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 13:59:55,189 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 13:59:55,190 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:59:53" (1/1) ... [2021-11-06 13:59:55,196 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 13:59:55,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 13:59:55,220 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 13:59:55,242 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 13:59:55,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 13:59:55,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 13:59:55,263 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2021-11-06 13:59:55,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2021-11-06 13:59:55,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 13:59:55,264 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-06 13:59:55,264 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 13:59:55,264 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-06 13:59:55,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 13:59:55,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 13:59:55,265 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 13:59:55,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 13:59:55,265 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_8 [2021-11-06 13:59:55,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_8 [2021-11-06 13:59:55,265 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 13:59:55,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 13:59:55,266 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 13:59:55,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 13:59:55,266 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-06 13:59:55,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-06 13:59:55,266 INFO L130 BoogieDeclarations]: Found specification of procedure ims_pcu_irq [2021-11-06 13:59:55,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ims_pcu_irq [2021-11-06 13:59:55,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 13:59:55,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 13:59:55,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 14:00:13,934 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 14:00:13,934 INFO L299 CfgBuilder]: Removed 2529 assume(true) statements. [2021-11-06 14:00:13,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 02:00:13 BoogieIcfgContainer [2021-11-06 14:00:13,938 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 14:00:13,940 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 14:00:13,940 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 14:00:13,943 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 14:00:13,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 01:59:51" (1/3) ... [2021-11-06 14:00:13,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f76515c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 02:00:13, skipping insertion in model container [2021-11-06 14:00:13,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:59:53" (2/3) ... [2021-11-06 14:00:13,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f76515c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 02:00:13, skipping insertion in model container [2021-11-06 14:00:13,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 02:00:13" (3/3) ... [2021-11-06 14:00:13,946 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--input--misc--ims-pcu.ko-entry_point.cil.out.i [2021-11-06 14:00:13,950 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 14:00:13,951 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-06 14:00:14,000 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 14:00:14,005 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 14:00:14,005 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-06 14:00:14,058 INFO L276 IsEmpty]: Start isEmpty. Operand has 2894 states, 2873 states have (on average 1.4246432300730942) internal successors, (4093), 2879 states have internal predecessors, (4093), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-06 14:00:14,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-06 14:00:14,071 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:00:14,071 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:00:14,072 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 14:00:14,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:00:14,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1256768685, now seen corresponding path program 1 times [2021-11-06 14:00:14,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:00:14,085 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901036427] [2021-11-06 14:00:14,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:00:14,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:00:14,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:00:14,819 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 14:00:14,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:00:14,820 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901036427] [2021-11-06 14:00:14,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901036427] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:00:14,821 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:00:14,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:00:14,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866394367] [2021-11-06 14:00:14,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:00:14,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:00:14,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:00:14,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:00:14,848 INFO L87 Difference]: Start difference. First operand has 2894 states, 2873 states have (on average 1.4246432300730942) internal successors, (4093), 2879 states have internal predecessors, (4093), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 14:00:17,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:00:17,471 INFO L93 Difference]: Finished difference Result 8456 states and 12037 transitions. [2021-11-06 14:00:17,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:00:17,473 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-06 14:00:17,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:00:17,516 INFO L225 Difference]: With dead ends: 8456 [2021-11-06 14:00:17,517 INFO L226 Difference]: Without dead ends: 5533 [2021-11-06 14:00:17,531 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 14:00:17,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5533 states. [2021-11-06 14:00:17,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5533 to 5533. [2021-11-06 14:00:17,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5533 states, 5498 states have (on average 1.4099672608221172) internal successors, (7752), 5504 states have internal predecessors, (7752), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-06 14:00:17,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5533 states to 5533 states and 7796 transitions. [2021-11-06 14:00:17,746 INFO L78 Accepts]: Start accepts. Automaton has 5533 states and 7796 transitions. Word has length 71 [2021-11-06 14:00:17,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:00:17,748 INFO L470 AbstractCegarLoop]: Abstraction has 5533 states and 7796 transitions. [2021-11-06 14:00:17,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 14:00:17,748 INFO L276 IsEmpty]: Start isEmpty. Operand 5533 states and 7796 transitions. [2021-11-06 14:00:17,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-06 14:00:17,757 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:00:17,757 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:00:17,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 14:00:17,757 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 14:00:17,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:00:17,760 INFO L85 PathProgramCache]: Analyzing trace with hash 317054977, now seen corresponding path program 1 times [2021-11-06 14:00:17,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:00:17,760 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903956524] [2021-11-06 14:00:17,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:00:17,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:00:17,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:00:18,144 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 14:00:18,145 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:00:18,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903956524] [2021-11-06 14:00:18,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903956524] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:00:18,146 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:00:18,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 14:00:18,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403545914] [2021-11-06 14:00:18,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:00:18,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:00:18,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:00:18,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:00:18,149 INFO L87 Difference]: Start difference. First operand 5533 states and 7796 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 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 14:00:18,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:00:18,482 INFO L93 Difference]: Finished difference Result 16347 states and 23153 transitions. [2021-11-06 14:00:18,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:00:18,483 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 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 14:00:18,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:00:18,530 INFO L225 Difference]: With dead ends: 16347 [2021-11-06 14:00:18,531 INFO L226 Difference]: Without dead ends: 10939 [2021-11-06 14:00:18,549 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 14:00:18,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10939 states. [2021-11-06 14:00:18,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10939 to 10927. [2021-11-06 14:00:18,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10927 states, 10862 states have (on average 1.4106978457006076) internal successors, (15323), 10870 states have internal predecessors, (15323), 44 states have call successors, (44), 16 states have call predecessors, (44), 16 states have return successors, (66), 44 states have call predecessors, (66), 44 states have call successors, (66) [2021-11-06 14:00:18,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10927 states to 10927 states and 15433 transitions. [2021-11-06 14:00:18,865 INFO L78 Accepts]: Start accepts. Automaton has 10927 states and 15433 transitions. Word has length 78 [2021-11-06 14:00:18,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:00:18,870 INFO L470 AbstractCegarLoop]: Abstraction has 10927 states and 15433 transitions. [2021-11-06 14:00:18,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 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 14:00:18,870 INFO L276 IsEmpty]: Start isEmpty. Operand 10927 states and 15433 transitions. [2021-11-06 14:00:18,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-06 14:00:18,872 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:00:18,873 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:00:18,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 14:00:18,874 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:00:18,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:00:18,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1238777568, now seen corresponding path program 1 times [2021-11-06 14:00:18,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:00:18,880 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830952607] [2021-11-06 14:00:18,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:00:18,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:00:19,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:00:19,238 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 14:00:19,239 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:00:19,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830952607] [2021-11-06 14:00:19,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830952607] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:00:19,239 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:00:19,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 14:00:19,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955637362] [2021-11-06 14:00:19,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:00:19,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:00:19,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:00:19,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:00:19,241 INFO L87 Difference]: Start difference. First operand 10927 states and 15433 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 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 14:00:19,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:00:19,563 INFO L93 Difference]: Finished difference Result 10927 states and 15433 transitions. [2021-11-06 14:00:19,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:00:19,564 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 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 79 [2021-11-06 14:00:19,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:00:19,609 INFO L225 Difference]: With dead ends: 10927 [2021-11-06 14:00:19,609 INFO L226 Difference]: Without dead ends: 10925 [2021-11-06 14:00:19,616 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 14:00:19,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10925 states. [2021-11-06 14:00:19,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10925 to 10925. [2021-11-06 14:00:19,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10925 states, 10861 states have (on average 1.4106435871466716) internal successors, (15321), 10868 states have internal predecessors, (15321), 44 states have call successors, (44), 16 states have call predecessors, (44), 16 states have return successors, (66), 44 states have call predecessors, (66), 44 states have call successors, (66) [2021-11-06 14:00:19,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10925 states to 10925 states and 15431 transitions. [2021-11-06 14:00:19,928 INFO L78 Accepts]: Start accepts. Automaton has 10925 states and 15431 transitions. Word has length 79 [2021-11-06 14:00:19,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:00:19,929 INFO L470 AbstractCegarLoop]: Abstraction has 10925 states and 15431 transitions. [2021-11-06 14:00:19,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 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 14:00:19,930 INFO L276 IsEmpty]: Start isEmpty. Operand 10925 states and 15431 transitions. [2021-11-06 14:00:19,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-06 14:00:19,932 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:00:19,932 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:00:19,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 14:00:19,933 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:00:19,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:00:19,933 INFO L85 PathProgramCache]: Analyzing trace with hash -252593173, now seen corresponding path program 1 times [2021-11-06 14:00:19,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:00:19,934 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064708631] [2021-11-06 14:00:19,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:00:19,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:00:20,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:00:20,145 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 14:00:20,146 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:00:20,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064708631] [2021-11-06 14:00:20,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064708631] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:00:20,149 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:00:20,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 14:00:20,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423133889] [2021-11-06 14:00:20,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:00:20,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:00:20,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:00:20,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:00:20,151 INFO L87 Difference]: Start difference. First operand 10925 states and 15431 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:00:20,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:00:20,328 INFO L93 Difference]: Finished difference Result 10925 states and 15431 transitions. [2021-11-06 14:00:20,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:00:20,329 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-06 14:00:20,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:00:20,363 INFO L225 Difference]: With dead ends: 10925 [2021-11-06 14:00:20,364 INFO L226 Difference]: Without dead ends: 10923 [2021-11-06 14:00:20,370 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 14:00:20,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10923 states. [2021-11-06 14:00:20,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10923 to 10923. [2021-11-06 14:00:20,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10923 states, 10860 states have (on average 1.4105893186003684) internal successors, (15319), 10866 states have internal predecessors, (15319), 44 states have call successors, (44), 16 states have call predecessors, (44), 16 states have return successors, (66), 44 states have call predecessors, (66), 44 states have call successors, (66) [2021-11-06 14:00:20,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10923 states to 10923 states and 15429 transitions. [2021-11-06 14:00:20,861 INFO L78 Accepts]: Start accepts. Automaton has 10923 states and 15429 transitions. Word has length 80 [2021-11-06 14:00:20,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:00:20,861 INFO L470 AbstractCegarLoop]: Abstraction has 10923 states and 15429 transitions. [2021-11-06 14:00:20,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:00:20,862 INFO L276 IsEmpty]: Start isEmpty. Operand 10923 states and 15429 transitions. [2021-11-06 14:00:20,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-06 14:00:20,863 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:00:20,864 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:00:20,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 14:00:20,864 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:00:20,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:00:20,865 INFO L85 PathProgramCache]: Analyzing trace with hash 759554122, now seen corresponding path program 1 times [2021-11-06 14:00:20,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:00:20,865 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999469797] [2021-11-06 14:00:20,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:00:20,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:00:20,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:00:21,087 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 14:00:21,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:00:21,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999469797] [2021-11-06 14:00:21,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999469797] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:00:21,088 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:00:21,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 14:00:21,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975090902] [2021-11-06 14:00:21,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:00:21,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:00:21,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:00:21,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:00:21,091 INFO L87 Difference]: Start difference. First operand 10923 states and 15429 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:00:21,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:00:21,335 INFO L93 Difference]: Finished difference Result 10923 states and 15429 transitions. [2021-11-06 14:00:21,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:00:21,336 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-11-06 14:00:21,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:00:21,368 INFO L225 Difference]: With dead ends: 10923 [2021-11-06 14:00:21,369 INFO L226 Difference]: Without dead ends: 10921 [2021-11-06 14:00:21,376 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 14:00:21,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10921 states. [2021-11-06 14:00:21,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10921 to 10921. [2021-11-06 14:00:21,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10921 states, 10859 states have (on average 1.4105350400589374) internal successors, (15317), 10864 states have internal predecessors, (15317), 44 states have call successors, (44), 16 states have call predecessors, (44), 16 states have return successors, (66), 44 states have call predecessors, (66), 44 states have call successors, (66) [2021-11-06 14:00:21,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10921 states to 10921 states and 15427 transitions. [2021-11-06 14:00:21,792 INFO L78 Accepts]: Start accepts. Automaton has 10921 states and 15427 transitions. Word has length 81 [2021-11-06 14:00:21,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:00:21,793 INFO L470 AbstractCegarLoop]: Abstraction has 10921 states and 15427 transitions. [2021-11-06 14:00:21,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:00:21,793 INFO L276 IsEmpty]: Start isEmpty. Operand 10921 states and 15427 transitions. [2021-11-06 14:00:21,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-06 14:00:21,803 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:00:21,803 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:00:21,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 14:00:21,804 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:00:21,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:00:21,804 INFO L85 PathProgramCache]: Analyzing trace with hash 2071349205, now seen corresponding path program 1 times [2021-11-06 14:00:21,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:00:21,805 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193643502] [2021-11-06 14:00:21,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:00:21,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:00:21,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:00:22,041 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 14:00:22,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:00:22,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193643502] [2021-11-06 14:00:22,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193643502] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:00:22,042 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:00:22,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 14:00:22,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719438409] [2021-11-06 14:00:22,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:00:22,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:00:22,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:00:22,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:00:22,045 INFO L87 Difference]: Start difference. First operand 10921 states and 15427 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:00:22,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:00:22,304 INFO L93 Difference]: Finished difference Result 10921 states and 15427 transitions. [2021-11-06 14:00:22,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:00:22,304 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-06 14:00:22,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:00:22,332 INFO L225 Difference]: With dead ends: 10921 [2021-11-06 14:00:22,332 INFO L226 Difference]: Without dead ends: 10912 [2021-11-06 14:00:22,337 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 14:00:22,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10912 states. [2021-11-06 14:00:22,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10912 to 10912. [2021-11-06 14:00:22,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10912 states, 10851 states have (on average 1.4104690811906737) internal successors, (15305), 10855 states have internal predecessors, (15305), 44 states have call successors, (44), 16 states have call predecessors, (44), 16 states have return successors, (66), 44 states have call predecessors, (66), 44 states have call successors, (66) [2021-11-06 14:00:22,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10912 states to 10912 states and 15415 transitions. [2021-11-06 14:00:22,657 INFO L78 Accepts]: Start accepts. Automaton has 10912 states and 15415 transitions. Word has length 82 [2021-11-06 14:00:22,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:00:22,658 INFO L470 AbstractCegarLoop]: Abstraction has 10912 states and 15415 transitions. [2021-11-06 14:00:22,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:00:22,662 INFO L276 IsEmpty]: Start isEmpty. Operand 10912 states and 15415 transitions. [2021-11-06 14:00:22,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-06 14:00:22,674 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:00:22,675 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:00:22,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 14:00:22,675 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:00:22,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:00:22,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1181693351, now seen corresponding path program 1 times [2021-11-06 14:00:22,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:00:22,676 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329542131] [2021-11-06 14:00:22,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:00:22,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:00:22,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:00:22,915 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 14:00:22,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:00:22,916 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329542131] [2021-11-06 14:00:22,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329542131] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:00:22,916 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:00:22,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:00:22,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220311474] [2021-11-06 14:00:22,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:00:22,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:00:22,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:00:22,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:00:22,918 INFO L87 Difference]: Start difference. First operand 10912 states and 15415 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 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 14:00:23,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:00:23,444 INFO L93 Difference]: Finished difference Result 28473 states and 40498 transitions. [2021-11-06 14:00:23,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:00:23,445 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 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 139 [2021-11-06 14:00:23,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:00:23,500 INFO L225 Difference]: With dead ends: 28473 [2021-11-06 14:00:23,500 INFO L226 Difference]: Without dead ends: 17686 [2021-11-06 14:00:23,531 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 14:00:23,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17686 states. [2021-11-06 14:00:24,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17686 to 17678. [2021-11-06 14:00:24,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17678 states, 17617 states have (on average 1.4254413350740762) internal successors, (25112), 17621 states have internal predecessors, (25112), 44 states have call successors, (44), 16 states have call predecessors, (44), 16 states have return successors, (66), 44 states have call predecessors, (66), 44 states have call successors, (66) [2021-11-06 14:00:24,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17678 states to 17678 states and 25222 transitions. [2021-11-06 14:00:24,186 INFO L78 Accepts]: Start accepts. Automaton has 17678 states and 25222 transitions. Word has length 139 [2021-11-06 14:00:24,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:00:24,187 INFO L470 AbstractCegarLoop]: Abstraction has 17678 states and 25222 transitions. [2021-11-06 14:00:24,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 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 14:00:24,187 INFO L276 IsEmpty]: Start isEmpty. Operand 17678 states and 25222 transitions. [2021-11-06 14:00:24,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-11-06 14:00:24,208 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:00:24,208 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:00:24,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 14:00:24,209 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 14:00:24,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:00:24,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1278191310, now seen corresponding path program 1 times [2021-11-06 14:00:24,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:00:24,210 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131869045] [2021-11-06 14:00:24,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:00:24,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:00:24,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:00:24,435 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-06 14:00:24,436 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:00:24,436 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131869045] [2021-11-06 14:00:24,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131869045] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:00:24,436 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:00:24,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:00:24,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729613262] [2021-11-06 14:00:24,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:00:24,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:00:24,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:00:24,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:00:24,438 INFO L87 Difference]: Start difference. First operand 17678 states and 25222 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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 14:00:26,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:00:26,978 INFO L93 Difference]: Finished difference Result 28230 states and 40311 transitions. [2021-11-06 14:00:26,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:00:26,979 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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 162 [2021-11-06 14:00:26,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:00:27,005 INFO L225 Difference]: With dead ends: 28230 [2021-11-06 14:00:27,006 INFO L226 Difference]: Without dead ends: 10676 [2021-11-06 14:00:27,036 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 14:00:27,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10676 states. [2021-11-06 14:00:27,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10676 to 10673. [2021-11-06 14:00:27,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10673 states, 10642 states have (on average 1.4263296372862244) internal successors, (15179), 10644 states have internal predecessors, (15179), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (33), 22 states have call predecessors, (33), 22 states have call successors, (33) [2021-11-06 14:00:27,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10673 states to 10673 states and 15234 transitions. [2021-11-06 14:00:27,332 INFO L78 Accepts]: Start accepts. Automaton has 10673 states and 15234 transitions. Word has length 162 [2021-11-06 14:00:27,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:00:27,332 INFO L470 AbstractCegarLoop]: Abstraction has 10673 states and 15234 transitions. [2021-11-06 14:00:27,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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 14:00:27,333 INFO L276 IsEmpty]: Start isEmpty. Operand 10673 states and 15234 transitions. [2021-11-06 14:00:27,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-11-06 14:00:27,348 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:00:27,348 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:00:27,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 14:00:27,350 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 14:00:27,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:00:27,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1388499896, now seen corresponding path program 1 times [2021-11-06 14:00:27,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:00:27,351 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499376337] [2021-11-06 14:00:27,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:00:27,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:00:27,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:00:27,616 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-06 14:00:27,616 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:00:27,617 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499376337] [2021-11-06 14:00:27,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499376337] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:00:27,617 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:00:27,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 14:00:27,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478964502] [2021-11-06 14:00:27,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 14:00:27,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:00:27,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 14:00:27,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 14:00:27,619 INFO L87 Difference]: Start difference. First operand 10673 states and 15234 transitions. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 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 14:00:28,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:00:28,341 INFO L93 Difference]: Finished difference Result 33963 states and 48643 transitions. [2021-11-06 14:00:28,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 14:00:28,342 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 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 184 [2021-11-06 14:00:28,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:00:28,418 INFO L225 Difference]: With dead ends: 33963 [2021-11-06 14:00:28,418 INFO L226 Difference]: Without dead ends: 25107 [2021-11-06 14:00:28,449 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 14:00:28,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25107 states. [2021-11-06 14:00:28,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25107 to 10677. [2021-11-06 14:00:28,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10677 states, 10646 states have (on average 1.4261694533157994) internal successors, (15183), 10648 states have internal predecessors, (15183), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (33), 22 states have call predecessors, (33), 22 states have call successors, (33) [2021-11-06 14:00:28,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10677 states to 10677 states and 15238 transitions. [2021-11-06 14:00:28,913 INFO L78 Accepts]: Start accepts. Automaton has 10677 states and 15238 transitions. Word has length 184 [2021-11-06 14:00:28,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:00:28,914 INFO L470 AbstractCegarLoop]: Abstraction has 10677 states and 15238 transitions. [2021-11-06 14:00:28,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 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 14:00:28,914 INFO L276 IsEmpty]: Start isEmpty. Operand 10677 states and 15238 transitions. [2021-11-06 14:00:28,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-11-06 14:00:28,931 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:00:28,934 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:00:28,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 14:00:28,935 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 14:00:28,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:00:28,935 INFO L85 PathProgramCache]: Analyzing trace with hash 278785786, now seen corresponding path program 1 times [2021-11-06 14:00:28,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:00:28,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133988539] [2021-11-06 14:00:28,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:00:28,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:00:29,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:00:29,204 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-06 14:00:29,205 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:00:29,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133988539] [2021-11-06 14:00:29,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133988539] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:00:29,205 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:00:29,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 14:00:29,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953765947] [2021-11-06 14:00:29,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 14:00:29,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:00:29,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 14:00:29,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:00:29,208 INFO L87 Difference]: Start difference. First operand 10677 states and 15238 transitions. Second operand has 5 states, 5 states have (on average 39.6) internal successors, (198), 5 states have internal predecessors, (198), 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 14:00:30,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:00:30,583 INFO L93 Difference]: Finished difference Result 41315 states and 59194 transitions. [2021-11-06 14:00:30,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 14:00:30,584 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.6) internal successors, (198), 5 states have internal predecessors, (198), 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 206 [2021-11-06 14:00:30,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:00:30,679 INFO L225 Difference]: With dead ends: 41315 [2021-11-06 14:00:30,679 INFO L226 Difference]: Without dead ends: 32455 [2021-11-06 14:00:30,715 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-06 14:00:30,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32455 states. [2021-11-06 14:00:31,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32455 to 10683. [2021-11-06 14:00:31,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10683 states, 10652 states have (on average 1.4259294029290275) internal successors, (15189), 10654 states have internal predecessors, (15189), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (33), 22 states have call predecessors, (33), 22 states have call successors, (33) [2021-11-06 14:00:31,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10683 states to 10683 states and 15244 transitions. [2021-11-06 14:00:31,295 INFO L78 Accepts]: Start accepts. Automaton has 10683 states and 15244 transitions. Word has length 206 [2021-11-06 14:00:31,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:00:31,295 INFO L470 AbstractCegarLoop]: Abstraction has 10683 states and 15244 transitions. [2021-11-06 14:00:31,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.6) internal successors, (198), 5 states have internal predecessors, (198), 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 14:00:31,296 INFO L276 IsEmpty]: Start isEmpty. Operand 10683 states and 15244 transitions. [2021-11-06 14:00:31,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2021-11-06 14:00:31,314 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:00:31,315 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:00:31,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-06 14:00:31,315 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 14:00:31,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:00:31,316 INFO L85 PathProgramCache]: Analyzing trace with hash -130836703, now seen corresponding path program 1 times [2021-11-06 14:00:31,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:00:31,316 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260127123] [2021-11-06 14:00:31,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:00:31,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:00:31,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:00:31,540 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-06 14:00:31,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:00:31,541 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260127123] [2021-11-06 14:00:31,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260127123] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:00:31,541 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:00:31,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 14:00:31,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574292033] [2021-11-06 14:00:31,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 14:00:31,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:00:31,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 14:00:31,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:00:31,544 INFO L87 Difference]: Start difference. First operand 10683 states and 15244 transitions. Second operand has 5 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 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 14:00:32,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:00:32,916 INFO L93 Difference]: Finished difference Result 41351 states and 59238 transitions. [2021-11-06 14:00:32,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 14:00:32,917 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 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 208 [2021-11-06 14:00:32,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:00:33,022 INFO L225 Difference]: With dead ends: 41351 [2021-11-06 14:00:33,022 INFO L226 Difference]: Without dead ends: 32485 [2021-11-06 14:00:33,061 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-06 14:00:33,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32485 states. [2021-11-06 14:00:33,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32485 to 10689. [2021-11-06 14:00:33,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10689 states, 10658 states have (on average 1.42568962281854) internal successors, (15195), 10660 states have internal predecessors, (15195), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (33), 22 states have call predecessors, (33), 22 states have call successors, (33) [2021-11-06 14:00:33,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10689 states to 10689 states and 15250 transitions. [2021-11-06 14:00:33,824 INFO L78 Accepts]: Start accepts. Automaton has 10689 states and 15250 transitions. Word has length 208 [2021-11-06 14:00:33,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:00:33,825 INFO L470 AbstractCegarLoop]: Abstraction has 10689 states and 15250 transitions. [2021-11-06 14:00:33,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 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 14:00:33,826 INFO L276 IsEmpty]: Start isEmpty. Operand 10689 states and 15250 transitions. [2021-11-06 14:00:33,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-11-06 14:00:33,842 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:00:33,844 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:00:33,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-06 14:00:33,844 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 14:00:33,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:00:33,845 INFO L85 PathProgramCache]: Analyzing trace with hash -2010053830, now seen corresponding path program 1 times [2021-11-06 14:00:33,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:00:33,845 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478530837] [2021-11-06 14:00:33,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:00:33,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:00:33,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:00:34,108 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-06 14:00:34,108 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:00:34,108 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478530837] [2021-11-06 14:00:34,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478530837] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:00:34,109 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971674601] [2021-11-06 14:00:34,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:00:34,109 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:00:34,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:00:34,111 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 14:00:34,121 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 14:00:35,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:00:35,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 3782 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-06 14:00:35,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 14:00:35,985 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-06 14:00:35,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971674601] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:00:35,986 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 14:00:35,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2021-11-06 14:00:35,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643195059] [2021-11-06 14:00:35,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 14:00:35,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:00:35,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 14:00:35,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-06 14:00:35,988 INFO L87 Difference]: Start difference. First operand 10689 states and 15250 transitions. Second operand has 7 states, 7 states have (on average 28.857142857142858) internal successors, (202), 7 states have internal predecessors, (202), 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 14:00:41,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:00:41,405 INFO L93 Difference]: Finished difference Result 72301 states and 103612 transitions. [2021-11-06 14:00:41,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-06 14:00:41,406 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 28.857142857142858) internal successors, (202), 7 states have internal predecessors, (202), 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 210 [2021-11-06 14:00:41,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:00:41,583 INFO L225 Difference]: With dead ends: 72301 [2021-11-06 14:00:41,584 INFO L226 Difference]: Without dead ends: 63429 [2021-11-06 14:00:41,632 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=158, Invalid=492, Unknown=0, NotChecked=0, Total=650 [2021-11-06 14:00:41,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63429 states. [2021-11-06 14:00:42,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63429 to 10719. [2021-11-06 14:00:42,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10719 states, 10688 states have (on average 1.4245883233532934) internal successors, (15226), 10690 states have internal predecessors, (15226), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (33), 22 states have call predecessors, (33), 22 states have call successors, (33) [2021-11-06 14:00:42,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10719 states to 10719 states and 15281 transitions. [2021-11-06 14:00:42,770 INFO L78 Accepts]: Start accepts. Automaton has 10719 states and 15281 transitions. Word has length 210 [2021-11-06 14:00:42,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:00:42,771 INFO L470 AbstractCegarLoop]: Abstraction has 10719 states and 15281 transitions. [2021-11-06 14:00:42,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 28.857142857142858) internal successors, (202), 7 states have internal predecessors, (202), 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 14:00:42,771 INFO L276 IsEmpty]: Start isEmpty. Operand 10719 states and 15281 transitions. [2021-11-06 14:00:42,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-11-06 14:00:42,787 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:00:42,787 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:00:42,828 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 14:00:43,003 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,SelfDestructingSolverStorable11 [2021-11-06 14:00:43,004 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 14:00:43,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:00:43,005 INFO L85 PathProgramCache]: Analyzing trace with hash 595969724, now seen corresponding path program 1 times [2021-11-06 14:00:43,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:00:43,005 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733322329] [2021-11-06 14:00:43,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:00:43,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:00:43,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:00:43,399 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-06 14:00:43,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:00:43,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733322329] [2021-11-06 14:00:43,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733322329] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:00:43,400 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:00:43,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 14:00:43,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665423956] [2021-11-06 14:00:43,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 14:00:43,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:00:43,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 14:00:43,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 14:00:43,402 INFO L87 Difference]: Start difference. First operand 10719 states and 15281 transitions. Second operand has 4 states, 4 states have (on average 50.5) internal successors, (202), 4 states have internal predecessors, (202), 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 14:00:44,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:00:44,898 INFO L93 Difference]: Finished difference Result 28081 states and 40042 transitions. [2021-11-06 14:00:44,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 14:00:44,899 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.5) internal successors, (202), 4 states have internal predecessors, (202), 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 210 [2021-11-06 14:00:44,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:00:44,941 INFO L225 Difference]: With dead ends: 28081 [2021-11-06 14:00:44,941 INFO L226 Difference]: Without dead ends: 19175 [2021-11-06 14:00:44,959 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 14:00:44,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19175 states. [2021-11-06 14:00:45,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19175 to 10719. [2021-11-06 14:00:45,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10719 states, 10688 states have (on average 1.4244011976047903) internal successors, (15224), 10690 states have internal predecessors, (15224), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (33), 22 states have call predecessors, (33), 22 states have call successors, (33) [2021-11-06 14:00:45,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10719 states to 10719 states and 15279 transitions. [2021-11-06 14:00:45,706 INFO L78 Accepts]: Start accepts. Automaton has 10719 states and 15279 transitions. Word has length 210 [2021-11-06 14:00:45,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:00:45,707 INFO L470 AbstractCegarLoop]: Abstraction has 10719 states and 15279 transitions. [2021-11-06 14:00:45,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.5) internal successors, (202), 4 states have internal predecessors, (202), 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 14:00:45,707 INFO L276 IsEmpty]: Start isEmpty. Operand 10719 states and 15279 transitions. [2021-11-06 14:00:45,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2021-11-06 14:00:45,722 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:00:45,722 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:00:45,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-06 14:00:45,723 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 14:00:45,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:00:45,723 INFO L85 PathProgramCache]: Analyzing trace with hash 213664640, now seen corresponding path program 1 times [2021-11-06 14:00:45,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:00:45,724 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632143152] [2021-11-06 14:00:45,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:00:45,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:00:45,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:00:46,126 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-06 14:00:46,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:00:46,126 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632143152] [2021-11-06 14:00:46,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632143152] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:00:46,126 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:00:46,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-06 14:00:46,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441398044] [2021-11-06 14:00:46,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 14:00:46,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:00:46,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 14:00:46,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-06 14:00:46,128 INFO L87 Difference]: Start difference. First operand 10719 states and 15279 transitions. Second operand has 7 states, 7 states have (on average 29.142857142857142) internal successors, (204), 7 states have internal predecessors, (204), 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 14:00:49,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:00:49,816 INFO L93 Difference]: Finished difference Result 58861 states and 84238 transitions. [2021-11-06 14:00:49,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-06 14:00:49,817 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 29.142857142857142) internal successors, (204), 7 states have internal predecessors, (204), 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 212 [2021-11-06 14:00:49,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:00:49,947 INFO L225 Difference]: With dead ends: 58861 [2021-11-06 14:00:49,947 INFO L226 Difference]: Without dead ends: 49959 [2021-11-06 14:00:49,992 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-11-06 14:00:50,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49959 states. [2021-11-06 14:00:51,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49959 to 10729. [2021-11-06 14:00:51,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10729 states, 10698 states have (on average 1.4240044868199664) internal successors, (15234), 10700 states have internal predecessors, (15234), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (33), 22 states have call predecessors, (33), 22 states have call successors, (33) [2021-11-06 14:00:51,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10729 states to 10729 states and 15289 transitions. [2021-11-06 14:00:51,054 INFO L78 Accepts]: Start accepts. Automaton has 10729 states and 15289 transitions. Word has length 212 [2021-11-06 14:00:51,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:00:51,055 INFO L470 AbstractCegarLoop]: Abstraction has 10729 states and 15289 transitions. [2021-11-06 14:00:51,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 29.142857142857142) internal successors, (204), 7 states have internal predecessors, (204), 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 14:00:51,055 INFO L276 IsEmpty]: Start isEmpty. Operand 10729 states and 15289 transitions. [2021-11-06 14:00:51,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2021-11-06 14:00:51,068 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:00:51,069 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:00:51,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-06 14:00:51,069 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 14:00:51,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:00:51,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1253720964, now seen corresponding path program 1 times [2021-11-06 14:00:51,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:00:51,070 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065679274] [2021-11-06 14:00:51,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:00:51,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:00:51,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:00:51,390 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-06 14:00:51,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:00:51,390 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065679274] [2021-11-06 14:00:51,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065679274] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:00:51,391 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:00:51,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 14:00:51,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138872029] [2021-11-06 14:00:51,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 14:00:51,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:00:51,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 14:00:51,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 14:00:51,393 INFO L87 Difference]: Start difference. First operand 10729 states and 15289 transitions. Second operand has 4 states, 4 states have (on average 51.5) internal successors, (206), 4 states have internal predecessors, (206), 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 14:00:52,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:00:52,824 INFO L93 Difference]: Finished difference Result 26901 states and 38410 transitions. [2021-11-06 14:00:52,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 14:00:52,825 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 51.5) internal successors, (206), 4 states have internal predecessors, (206), 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 214 [2021-11-06 14:00:52,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:00:52,856 INFO L225 Difference]: With dead ends: 26901 [2021-11-06 14:00:52,856 INFO L226 Difference]: Without dead ends: 17989 [2021-11-06 14:00:52,871 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 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 14:00:52,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17989 states. [2021-11-06 14:00:53,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17989 to 10733. [2021-11-06 14:00:53,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10733 states, 10702 states have (on average 1.4238460100915717) internal successors, (15238), 10704 states have internal predecessors, (15238), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (33), 22 states have call predecessors, (33), 22 states have call successors, (33) [2021-11-06 14:00:53,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10733 states to 10733 states and 15293 transitions. [2021-11-06 14:00:53,641 INFO L78 Accepts]: Start accepts. Automaton has 10733 states and 15293 transitions. Word has length 214 [2021-11-06 14:00:53,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:00:53,641 INFO L470 AbstractCegarLoop]: Abstraction has 10733 states and 15293 transitions. [2021-11-06 14:00:53,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.5) internal successors, (206), 4 states have internal predecessors, (206), 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 14:00:53,642 INFO L276 IsEmpty]: Start isEmpty. Operand 10733 states and 15293 transitions. [2021-11-06 14:00:53,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2021-11-06 14:00:53,657 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:00:53,657 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:00:53,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-06 14:00:53,658 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 14:00:53,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:00:53,658 INFO L85 PathProgramCache]: Analyzing trace with hash -2082002527, now seen corresponding path program 1 times [2021-11-06 14:00:53,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:00:53,659 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869807069] [2021-11-06 14:00:53,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:00:53,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:00:53,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:00:53,974 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-06 14:00:53,975 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:00:53,975 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869807069] [2021-11-06 14:00:53,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869807069] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:00:53,975 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:00:53,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 14:00:53,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558491190] [2021-11-06 14:00:53,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 14:00:53,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:00:53,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 14:00:53,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 14:00:53,977 INFO L87 Difference]: Start difference. First operand 10733 states and 15293 transitions. Second operand has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 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 14:00:56,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:00:56,947 INFO L93 Difference]: Finished difference Result 44913 states and 64066 transitions. [2021-11-06 14:00:56,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 14:00:56,948 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 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 222 [2021-11-06 14:00:56,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:00:57,000 INFO L225 Difference]: With dead ends: 44913 [2021-11-06 14:00:57,000 INFO L226 Difference]: Without dead ends: 35997 [2021-11-06 14:00:57,017 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 14:00:57,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35997 states. [2021-11-06 14:00:57,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35997 to 10749. [2021-11-06 14:00:57,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10749 states, 10718 states have (on average 1.4235864900167943) internal successors, (15258), 10720 states have internal predecessors, (15258), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (33), 22 states have call predecessors, (33), 22 states have call successors, (33) [2021-11-06 14:00:57,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10749 states to 10749 states and 15313 transitions. [2021-11-06 14:00:57,878 INFO L78 Accepts]: Start accepts. Automaton has 10749 states and 15313 transitions. Word has length 222 [2021-11-06 14:00:57,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:00:57,881 INFO L470 AbstractCegarLoop]: Abstraction has 10749 states and 15313 transitions. [2021-11-06 14:00:57,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 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 14:00:57,881 INFO L276 IsEmpty]: Start isEmpty. Operand 10749 states and 15313 transitions. [2021-11-06 14:00:57,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-11-06 14:00:57,892 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:00:57,892 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:00:57,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-06 14:00:57,892 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 14:00:57,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:00:57,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1411220379, now seen corresponding path program 1 times [2021-11-06 14:00:57,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:00:57,893 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882517383] [2021-11-06 14:00:57,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:00:57,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:00:58,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:00:58,216 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-06 14:00:58,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:00:58,217 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882517383] [2021-11-06 14:00:58,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882517383] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:00:58,217 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:00:58,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 14:00:58,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438262995] [2021-11-06 14:00:58,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 14:00:58,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:00:58,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 14:00:58,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:00:58,219 INFO L87 Difference]: Start difference. First operand 10749 states and 15313 transitions. Second operand has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 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 14:01:01,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:01:01,554 INFO L93 Difference]: Finished difference Result 44909 states and 64058 transitions. [2021-11-06 14:01:01,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 14:01:01,554 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 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 224 [2021-11-06 14:01:01,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:01:01,624 INFO L225 Difference]: With dead ends: 44909 [2021-11-06 14:01:01,625 INFO L226 Difference]: Without dead ends: 35977 [2021-11-06 14:01:01,652 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-06 14:01:01,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35977 states. [2021-11-06 14:01:02,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35977 to 10755. [2021-11-06 14:01:02,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10755 states, 10724 states have (on average 1.423349496456546) internal successors, (15264), 10726 states have internal predecessors, (15264), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (33), 22 states have call predecessors, (33), 22 states have call successors, (33) [2021-11-06 14:01:02,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10755 states to 10755 states and 15319 transitions. [2021-11-06 14:01:02,593 INFO L78 Accepts]: Start accepts. Automaton has 10755 states and 15319 transitions. Word has length 224 [2021-11-06 14:01:02,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:01:02,594 INFO L470 AbstractCegarLoop]: Abstraction has 10755 states and 15319 transitions. [2021-11-06 14:01:02,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 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 14:01:02,594 INFO L276 IsEmpty]: Start isEmpty. Operand 10755 states and 15319 transitions. [2021-11-06 14:01:02,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2021-11-06 14:01:02,601 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:01:02,602 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:01:02,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-06 14:01:02,602 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:01:02,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:01:02,602 INFO L85 PathProgramCache]: Analyzing trace with hash 748951241, now seen corresponding path program 1 times [2021-11-06 14:01:02,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:01:02,603 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059190303] [2021-11-06 14:01:02,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:01:02,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:01:02,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:01:03,041 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-06 14:01:03,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:01:03,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059190303] [2021-11-06 14:01:03,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059190303] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:01:03,042 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:01:03,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:01:03,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639551637] [2021-11-06 14:01:03,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:01:03,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:01:03,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:01:03,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:01:03,045 INFO L87 Difference]: Start difference. First operand 10755 states and 15319 transitions. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 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 14:01:04,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:01:04,124 INFO L93 Difference]: Finished difference Result 21387 states and 30491 transitions. [2021-11-06 14:01:04,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:01:04,124 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 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 226 [2021-11-06 14:01:04,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:01:04,141 INFO L225 Difference]: With dead ends: 21387 [2021-11-06 14:01:04,141 INFO L226 Difference]: Without dead ends: 10756 [2021-11-06 14:01:04,154 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 14:01:04,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10756 states. [2021-11-06 14:01:04,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10756 to 10756. [2021-11-06 14:01:04,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10756 states, 10725 states have (on average 1.4233100233100233) internal successors, (15265), 10727 states have internal predecessors, (15265), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (33), 22 states have call predecessors, (33), 22 states have call successors, (33) [2021-11-06 14:01:04,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10756 states to 10756 states and 15320 transitions. [2021-11-06 14:01:04,964 INFO L78 Accepts]: Start accepts. Automaton has 10756 states and 15320 transitions. Word has length 226 [2021-11-06 14:01:04,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:01:04,965 INFO L470 AbstractCegarLoop]: Abstraction has 10756 states and 15320 transitions. [2021-11-06 14:01:04,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 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 14:01:04,965 INFO L276 IsEmpty]: Start isEmpty. Operand 10756 states and 15320 transitions. [2021-11-06 14:01:04,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2021-11-06 14:01:04,973 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:01:04,973 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:01:04,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-06 14:01:04,973 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:01:04,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:01:04,974 INFO L85 PathProgramCache]: Analyzing trace with hash 135552706, now seen corresponding path program 1 times [2021-11-06 14:01:04,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:01:04,974 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021294620] [2021-11-06 14:01:04,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:01:04,974 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:01:05,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:01:05,381 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-06 14:01:05,381 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:01:05,381 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021294620] [2021-11-06 14:01:05,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021294620] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:01:05,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883788681] [2021-11-06 14:01:05,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:01:05,382 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:01:05,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:01:05,384 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 14:01:05,385 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 14:03:05,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:03:05,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 3893 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-06 14:03:05,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 14:03:05,961 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-06 14:03:05,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883788681] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:03:05,962 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 14:03:05,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-11-06 14:03:05,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052310665] [2021-11-06 14:03:05,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 14:03:05,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:03:05,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 14:03:05,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 14:03:05,963 INFO L87 Difference]: Start difference. First operand 10756 states and 15320 transitions. Second operand has 5 states, 5 states have (on average 41.8) internal successors, (209), 5 states have internal predecessors, (209), 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 14:03:07,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:03:07,055 INFO L93 Difference]: Finished difference Result 21388 states and 30492 transitions. [2021-11-06 14:03:07,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 14:03:07,055 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 41.8) internal successors, (209), 5 states have internal predecessors, (209), 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 227 [2021-11-06 14:03:07,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:03:07,072 INFO L225 Difference]: With dead ends: 21388 [2021-11-06 14:03:07,072 INFO L226 Difference]: Without dead ends: 10757 [2021-11-06 14:03:07,084 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 227 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 14:03:07,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10757 states. [2021-11-06 14:03:07,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10757 to 10757. [2021-11-06 14:03:07,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10757 states, 10726 states have (on average 1.423270557523774) internal successors, (15266), 10728 states have internal predecessors, (15266), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (33), 22 states have call predecessors, (33), 22 states have call successors, (33) [2021-11-06 14:03:07,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10757 states to 10757 states and 15321 transitions. [2021-11-06 14:03:07,897 INFO L78 Accepts]: Start accepts. Automaton has 10757 states and 15321 transitions. Word has length 227 [2021-11-06 14:03:07,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:03:07,897 INFO L470 AbstractCegarLoop]: Abstraction has 10757 states and 15321 transitions. [2021-11-06 14:03:07,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.8) internal successors, (209), 5 states have internal predecessors, (209), 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 14:03:07,897 INFO L276 IsEmpty]: Start isEmpty. Operand 10757 states and 15321 transitions. [2021-11-06 14:03:07,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2021-11-06 14:03:07,907 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:03:07,908 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:03:07,987 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-06 14:03:08,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:03:08,130 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:03:08,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:03:08,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1699932695, now seen corresponding path program 2 times [2021-11-06 14:03:08,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:03:08,131 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487283153] [2021-11-06 14:03:08,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:03:08,131 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:03:08,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:03:08,617 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-06 14:03:08,617 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:03:08,617 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487283153] [2021-11-06 14:03:08,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487283153] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:03:08,618 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121375930] [2021-11-06 14:03:08,619 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-06 14:03:08,619 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:03:08,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:03:08,620 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 14:03:08,622 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 14:09:12,663 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-06 14:09:12,663 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 14:09:13,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 3899 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-06 14:09:13,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 14:09:13,741 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-06 14:09:13,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121375930] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:09:13,741 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 14:09:13,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-11-06 14:09:13,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306238219] [2021-11-06 14:09:13,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 14:09:13,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:09:13,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 14:09:13,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-06 14:09:13,743 INFO L87 Difference]: Start difference. First operand 10757 states and 15321 transitions. Second operand has 6 states, 6 states have (on average 35.0) internal successors, (210), 6 states have internal predecessors, (210), 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 14:09:15,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:09:15,056 INFO L93 Difference]: Finished difference Result 21389 states and 30493 transitions. [2021-11-06 14:09:15,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 14:09:15,057 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 35.0) internal successors, (210), 6 states have internal predecessors, (210), 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 228 [2021-11-06 14:09:15,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:09:15,081 INFO L225 Difference]: With dead ends: 21389 [2021-11-06 14:09:15,081 INFO L226 Difference]: Without dead ends: 10758 [2021-11-06 14:09:15,101 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 227 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-06 14:09:15,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10758 states. [2021-11-06 14:09:15,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10758 to 10758. [2021-11-06 14:09:15,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10758 states, 10727 states have (on average 1.4232310990957397) internal successors, (15267), 10729 states have internal predecessors, (15267), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (33), 22 states have call predecessors, (33), 22 states have call successors, (33) [2021-11-06 14:09:15,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10758 states to 10758 states and 15322 transitions. [2021-11-06 14:09:15,913 INFO L78 Accepts]: Start accepts. Automaton has 10758 states and 15322 transitions. Word has length 228 [2021-11-06 14:09:15,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:09:15,913 INFO L470 AbstractCegarLoop]: Abstraction has 10758 states and 15322 transitions. [2021-11-06 14:09:15,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 35.0) internal successors, (210), 6 states have internal predecessors, (210), 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 14:09:15,914 INFO L276 IsEmpty]: Start isEmpty. Operand 10758 states and 15322 transitions. [2021-11-06 14:09:15,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-11-06 14:09:15,921 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:09:15,922 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:09:16,036 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-06 14:09:16,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:09:16,147 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:09:16,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:09:16,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1529562018, now seen corresponding path program 3 times [2021-11-06 14:09:16,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:09:16,148 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149502870] [2021-11-06 14:09:16,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:09:16,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:09:16,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:09:16,771 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-06 14:09:16,771 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:09:16,771 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149502870] [2021-11-06 14:09:16,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149502870] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:09:16,772 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985083219] [2021-11-06 14:09:16,772 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-06 14:09:16,772 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:09:16,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:09:16,773 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 14:09:16,774 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