./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--media--rc--imon.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--media--rc--imon.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 1dadd209c6e3ebdaafa15f295f1ec8ec38d24c8a1f9b514f05808fa8c7c3e21c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 14:05:35,733 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 14:05:35,742 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 14:05:35,806 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 14:05:35,806 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 14:05:35,810 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 14:05:35,811 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 14:05:35,813 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 14:05:35,815 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 14:05:35,820 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 14:05:35,821 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 14:05:35,823 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 14:05:35,823 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 14:05:35,826 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 14:05:35,828 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 14:05:35,834 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 14:05:35,835 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 14:05:35,836 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 14:05:35,838 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 14:05:35,842 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 14:05:35,844 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 14:05:35,845 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 14:05:35,846 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 14:05:35,847 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 14:05:35,850 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 14:05:35,850 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 14:05:35,851 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 14:05:35,852 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 14:05:35,853 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 14:05:35,853 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 14:05:35,853 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 14:05:35,854 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 14:05:35,855 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 14:05:35,856 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 14:05:35,857 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 14:05:35,857 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 14:05:35,858 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 14:05:35,858 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 14:05:35,858 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 14:05:35,858 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 14:05:35,859 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 14:05:35,860 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 14:05:35,888 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 14:05:35,889 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 14:05:35,889 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 14:05:35,889 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 14:05:35,890 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 14:05:35,890 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 14:05:35,891 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 14:05:35,891 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 14:05:35,891 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 14:05:35,891 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 14:05:35,892 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 14:05:35,892 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 14:05:35,892 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 14:05:35,892 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 14:05:35,892 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 14:05:35,892 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 14:05:35,893 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 14:05:35,893 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 14:05:35,893 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 14:05:35,893 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 14:05:35,893 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 14:05:35,893 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 14:05:35,893 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 14:05:35,894 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 14:05:35,894 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 14:05:35,894 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 14:05:35,894 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 14:05:35,894 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 14:05:35,894 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 14:05:35,894 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1dadd209c6e3ebdaafa15f295f1ec8ec38d24c8a1f9b514f05808fa8c7c3e21c [2021-11-06 14:05:36,138 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 14:05:36,178 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 14:05:36,180 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 14:05:36,181 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 14:05:36,182 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 14:05:36,182 INFO L432 ainManager$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--media--rc--imon.ko-entry_point.cil.out.i [2021-11-06 14:05:36,242 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a012f7ff5/677ef38d69854c5db739eef90a2dbe32/FLAG6d745a3fd [2021-11-06 14:05:36,856 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 14:05:36,857 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--media--rc--imon.ko-entry_point.cil.out.i [2021-11-06 14:05:36,883 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a012f7ff5/677ef38d69854c5db739eef90a2dbe32/FLAG6d745a3fd [2021-11-06 14:05:37,262 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a012f7ff5/677ef38d69854c5db739eef90a2dbe32 [2021-11-06 14:05:37,265 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 14:05:37,267 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 14:05:37,269 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 14:05:37,269 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 14:05:37,272 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 14:05:37,273 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 02:05:37" (1/1) ... [2021-11-06 14:05:37,274 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44ffea85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:05:37, skipping insertion in model container [2021-11-06 14:05:37,274 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 02:05:37" (1/1) ... [2021-11-06 14:05:37,280 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 14:05:37,373 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 14:05:38,074 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--media--rc--imon.ko-entry_point.cil.out.i[117505,117518] [2021-11-06 14:05:38,641 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 14:05:38,678 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 14:05:38,747 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--media--rc--imon.ko-entry_point.cil.out.i[117505,117518] [2021-11-06 14:05:38,918 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 14:05:39,017 INFO L208 MainTranslator]: Completed translation [2021-11-06 14:05:39,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:05:39 WrapperNode [2021-11-06 14:05:39,017 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 14:05:39,019 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 14:05:39,019 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 14:05:39,020 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 14:05:39,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:05:39" (1/1) ... [2021-11-06 14:05:39,092 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:05:39" (1/1) ... [2021-11-06 14:05:39,384 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 14:05:39,385 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 14:05:39,385 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 14:05:39,385 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 14:05:39,392 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:05:39" (1/1) ... [2021-11-06 14:05:39,392 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:05:39" (1/1) ... [2021-11-06 14:05:39,445 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:05:39" (1/1) ... [2021-11-06 14:05:39,446 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:05:39" (1/1) ... [2021-11-06 14:05:39,680 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:05:39" (1/1) ... [2021-11-06 14:05:39,725 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:05:39" (1/1) ... [2021-11-06 14:05:39,758 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:05:39" (1/1) ... [2021-11-06 14:05:39,829 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 14:05:39,830 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 14:05:39,831 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 14:05:39,831 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 14:05:39,832 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:05:39" (1/1) ... [2021-11-06 14:05:39,837 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 14:05:39,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:05:39,856 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-06 14:05:39,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-06 14:05:39,904 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-06 14:05:39,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 14:05:39,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 14:05:39,905 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2021-11-06 14:05:39,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2021-11-06 14:05:39,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 14:05:39,906 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_10 [2021-11-06 14:05:39,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_10 [2021-11-06 14:05:39,906 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 14:05:39,906 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_11 [2021-11-06 14:05:39,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_11 [2021-11-06 14:05:39,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 14:05:39,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 14:05:39,907 INFO L130 BoogieDeclarations]: Found specification of procedure usb_rx_callback_intf1 [2021-11-06 14:05:39,907 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_rx_callback_intf1 [2021-11-06 14:05:39,907 INFO L130 BoogieDeclarations]: Found specification of procedure usb_rx_callback_intf0 [2021-11-06 14:05:39,907 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_rx_callback_intf0 [2021-11-06 14:05:39,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 14:05:39,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 14:05:39,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 14:05:39,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 14:05:39,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 14:05:39,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 14:05:39,908 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-06 14:05:39,908 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-06 14:05:39,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-06 14:05:39,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 14:05:39,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 14:05:39,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 14:06:47,474 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 14:06:47,475 INFO L299 CfgBuilder]: Removed 1883 assume(true) statements. [2021-11-06 14:06:47,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 02:06:47 BoogieIcfgContainer [2021-11-06 14:06:47,478 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 14:06:47,480 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 14:06:47,480 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 14:06:47,483 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 14:06:47,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 02:05:37" (1/3) ... [2021-11-06 14:06:47,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@428f80a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 02:06:47, skipping insertion in model container [2021-11-06 14:06:47,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 02:05:39" (2/3) ... [2021-11-06 14:06:47,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@428f80a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 02:06:47, skipping insertion in model container [2021-11-06 14:06:47,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 02:06:47" (3/3) ... [2021-11-06 14:06:47,486 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--media--rc--imon.ko-entry_point.cil.out.i [2021-11-06 14:06:47,490 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 14:06:47,491 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-06 14:06:47,561 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 14:06:47,567 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 14:06:47,567 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-06 14:06:47,616 INFO L276 IsEmpty]: Start isEmpty. Operand has 2464 states, 2431 states have (on average 1.4619498148909913) internal successors, (3554), 2438 states have internal predecessors, (3554), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2021-11-06 14:06:47,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-06 14:06:47,627 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:06:47,627 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] [2021-11-06 14:06:47,628 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 14:06:47,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:06:47,633 INFO L85 PathProgramCache]: Analyzing trace with hash 351109344, now seen corresponding path program 1 times [2021-11-06 14:06:47,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:06:47,640 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208126517] [2021-11-06 14:06:47,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:06:47,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:06:48,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:06:48,295 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 14:06:48,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:06:48,296 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208126517] [2021-11-06 14:06:48,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208126517] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:06:48,297 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:06:48,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:06:48,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746047207] [2021-11-06 14:06:48,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:06:48,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:06:48,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:06:48,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:06:48,320 INFO L87 Difference]: Start difference. First operand has 2464 states, 2431 states have (on average 1.4619498148909913) internal successors, (3554), 2438 states have internal predecessors, (3554), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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 14:06:50,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:06:50,739 INFO L93 Difference]: Finished difference Result 7262 states and 10613 transitions. [2021-11-06 14:06:50,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:06:50,743 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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 35 [2021-11-06 14:06:50,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:06:50,779 INFO L225 Difference]: With dead ends: 7262 [2021-11-06 14:06:50,780 INFO L226 Difference]: Without dead ends: 4777 [2021-11-06 14:06:50,794 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 14:06:50,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4777 states. [2021-11-06 14:06:51,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4777 to 4777. [2021-11-06 14:06:51,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4777 states, 4718 states have (on average 1.443408223823654) internal successors, (6810), 4726 states have internal predecessors, (6810), 42 states have call successors, (42), 12 states have call predecessors, (42), 12 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2021-11-06 14:06:51,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4777 states to 4777 states and 6894 transitions. [2021-11-06 14:06:51,114 INFO L78 Accepts]: Start accepts. Automaton has 4777 states and 6894 transitions. Word has length 35 [2021-11-06 14:06:51,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:06:51,115 INFO L470 AbstractCegarLoop]: Abstraction has 4777 states and 6894 transitions. [2021-11-06 14:06:51,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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 14:06:51,116 INFO L276 IsEmpty]: Start isEmpty. Operand 4777 states and 6894 transitions. [2021-11-06 14:06:51,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-06 14:06:51,120 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:06:51,120 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] [2021-11-06 14:06:51,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 14:06:51,121 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 14:06:51,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:06:51,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1121474417, now seen corresponding path program 1 times [2021-11-06 14:06:51,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:06:51,127 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785387757] [2021-11-06 14:06:51,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:06:51,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:06:51,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:06:51,775 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 14:06:51,775 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:06:51,776 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785387757] [2021-11-06 14:06:51,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785387757] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:06:51,776 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:06:51,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 14:06:51,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474289221] [2021-11-06 14:06:51,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:06:51,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:06:51,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:06:51,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:06:51,780 INFO L87 Difference]: Start difference. First operand 4777 states and 6894 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 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 14:06:52,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:06:52,251 INFO L93 Difference]: Finished difference Result 14229 states and 20687 transitions. [2021-11-06 14:06:52,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:06:52,253 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 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 41 [2021-11-06 14:06:52,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:06:52,301 INFO L225 Difference]: With dead ends: 14229 [2021-11-06 14:06:52,301 INFO L226 Difference]: Without dead ends: 9502 [2021-11-06 14:06:52,318 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 14:06:52,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9502 states. [2021-11-06 14:06:52,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9502 to 9490. [2021-11-06 14:06:52,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9490 states, 9377 states have (on average 1.4421456755892077) internal successors, (13523), 9389 states have internal predecessors, (13523), 84 states have call successors, (84), 24 states have call predecessors, (84), 24 states have return successors, (126), 80 states have call predecessors, (126), 84 states have call successors, (126) [2021-11-06 14:06:52,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9490 states to 9490 states and 13733 transitions. [2021-11-06 14:06:52,581 INFO L78 Accepts]: Start accepts. Automaton has 9490 states and 13733 transitions. Word has length 41 [2021-11-06 14:06:52,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:06:52,582 INFO L470 AbstractCegarLoop]: Abstraction has 9490 states and 13733 transitions. [2021-11-06 14:06:52,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 2 states have internal predecessors, (41), 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 14:06:52,583 INFO L276 IsEmpty]: Start isEmpty. Operand 9490 states and 13733 transitions. [2021-11-06 14:06:52,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-06 14:06:52,585 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:06:52,589 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] [2021-11-06 14:06:52,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 14:06:52,590 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 14:06:52,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:06:52,596 INFO L85 PathProgramCache]: Analyzing trace with hash 405975444, now seen corresponding path program 1 times [2021-11-06 14:06:52,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:06:52,596 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709750255] [2021-11-06 14:06:52,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:06:52,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:06:52,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:06:52,898 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 14:06:52,898 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:06:52,899 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709750255] [2021-11-06 14:06:52,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709750255] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:06:52,899 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:06:52,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 14:06:52,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663612441] [2021-11-06 14:06:52,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:06:52,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:06:52,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:06:52,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:06:52,900 INFO L87 Difference]: Start difference. First operand 9490 states and 13733 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 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 14:06:53,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:06:53,190 INFO L93 Difference]: Finished difference Result 28356 states and 41054 transitions. [2021-11-06 14:06:53,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:06:53,191 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 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 42 [2021-11-06 14:06:53,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:06:53,255 INFO L225 Difference]: With dead ends: 28356 [2021-11-06 14:06:53,256 INFO L226 Difference]: Without dead ends: 18916 [2021-11-06 14:06:53,281 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 14:06:53,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18916 states. [2021-11-06 14:06:53,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18916 to 18905. [2021-11-06 14:06:53,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18905 states, 18684 states have (on average 1.4418218796831515) internal successors, (26939), 18704 states have internal predecessors, (26939), 168 states have call successors, (168), 48 states have call predecessors, (168), 48 states have return successors, (252), 160 states have call predecessors, (252), 168 states have call successors, (252) [2021-11-06 14:06:53,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18905 states to 18905 states and 27359 transitions. [2021-11-06 14:06:53,927 INFO L78 Accepts]: Start accepts. Automaton has 18905 states and 27359 transitions. Word has length 42 [2021-11-06 14:06:53,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:06:53,928 INFO L470 AbstractCegarLoop]: Abstraction has 18905 states and 27359 transitions. [2021-11-06 14:06:53,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 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 14:06:53,928 INFO L276 IsEmpty]: Start isEmpty. Operand 18905 states and 27359 transitions. [2021-11-06 14:06:53,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-06 14:06:53,929 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:06:53,930 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] [2021-11-06 14:06:53,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 14:06:53,930 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 14:06:53,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:06:53,931 INFO L85 PathProgramCache]: Analyzing trace with hash -299656229, now seen corresponding path program 1 times [2021-11-06 14:06:53,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:06:53,932 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500875572] [2021-11-06 14:06:53,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:06:53,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:06:54,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:06:54,167 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 14:06:54,167 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:06:54,170 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500875572] [2021-11-06 14:06:54,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500875572] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:06:54,171 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:06:54,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 14:06:54,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912779198] [2021-11-06 14:06:54,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:06:54,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:06:54,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:06:54,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:06:54,172 INFO L87 Difference]: Start difference. First operand 18905 states and 27359 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 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 14:06:54,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:06:54,383 INFO L93 Difference]: Finished difference Result 18910 states and 27363 transitions. [2021-11-06 14:06:54,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:06:54,384 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 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 43 [2021-11-06 14:06:54,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:06:54,436 INFO L225 Difference]: With dead ends: 18910 [2021-11-06 14:06:54,437 INFO L226 Difference]: Without dead ends: 18908 [2021-11-06 14:06:54,451 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 14:06:54,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18908 states. [2021-11-06 14:06:54,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18908 to 18906. [2021-11-06 14:06:54,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18906 states, 18685 states have (on average 1.4417982338774418) internal successors, (26940), 18705 states have internal predecessors, (26940), 168 states have call successors, (168), 48 states have call predecessors, (168), 48 states have return successors, (252), 160 states have call predecessors, (252), 168 states have call successors, (252) [2021-11-06 14:06:54,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18906 states to 18906 states and 27360 transitions. [2021-11-06 14:06:54,837 INFO L78 Accepts]: Start accepts. Automaton has 18906 states and 27360 transitions. Word has length 43 [2021-11-06 14:06:54,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:06:54,972 INFO L470 AbstractCegarLoop]: Abstraction has 18906 states and 27360 transitions. [2021-11-06 14:06:54,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 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 14:06:54,972 INFO L276 IsEmpty]: Start isEmpty. Operand 18906 states and 27360 transitions. [2021-11-06 14:06:54,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-06 14:06:54,973 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:06:54,973 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] [2021-11-06 14:06:54,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 14:06:54,973 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 14:06:54,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:06:54,974 INFO L85 PathProgramCache]: Analyzing trace with hash -699401602, now seen corresponding path program 1 times [2021-11-06 14:06:54,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:06:54,974 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683399714] [2021-11-06 14:06:54,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:06:54,974 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:06:55,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:06:55,195 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 14:06:55,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:06:55,195 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683399714] [2021-11-06 14:06:55,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683399714] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:06:55,196 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:06:55,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 14:06:55,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753199999] [2021-11-06 14:06:55,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:06:55,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:06:55,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:06:55,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:06:55,197 INFO L87 Difference]: Start difference. First operand 18906 states and 27360 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 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 14:06:55,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:06:55,381 INFO L93 Difference]: Finished difference Result 18906 states and 27360 transitions. [2021-11-06 14:06:55,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:06:55,381 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 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 44 [2021-11-06 14:06:55,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:06:55,430 INFO L225 Difference]: With dead ends: 18906 [2021-11-06 14:06:55,430 INFO L226 Difference]: Without dead ends: 18904 [2021-11-06 14:06:55,441 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 14:06:55,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18904 states. [2021-11-06 14:06:55,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18904 to 18904. [2021-11-06 14:06:55,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18904 states, 18684 states have (on average 1.4417683579533291) internal successors, (26938), 18703 states have internal predecessors, (26938), 168 states have call successors, (168), 48 states have call predecessors, (168), 48 states have return successors, (252), 160 states have call predecessors, (252), 168 states have call successors, (252) [2021-11-06 14:06:55,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18904 states to 18904 states and 27358 transitions. [2021-11-06 14:06:55,817 INFO L78 Accepts]: Start accepts. Automaton has 18904 states and 27358 transitions. Word has length 44 [2021-11-06 14:06:55,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:06:55,821 INFO L470 AbstractCegarLoop]: Abstraction has 18904 states and 27358 transitions. [2021-11-06 14:06:55,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 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 14:06:55,821 INFO L276 IsEmpty]: Start isEmpty. Operand 18904 states and 27358 transitions. [2021-11-06 14:06:55,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-06 14:06:55,823 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:06:55,823 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:06:55,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 14:06:55,823 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 14:06:55,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:06:55,825 INFO L85 PathProgramCache]: Analyzing trace with hash -206606267, now seen corresponding path program 1 times [2021-11-06 14:06:55,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:06:55,825 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656084314] [2021-11-06 14:06:55,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:06:55,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:06:55,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:06:56,014 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 14:06:56,014 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:06:56,014 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656084314] [2021-11-06 14:06:56,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656084314] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:06:56,015 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:06:56,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 14:06:56,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183508161] [2021-11-06 14:06:56,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:06:56,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:06:56,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:06:56,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:06:56,016 INFO L87 Difference]: Start difference. First operand 18904 states and 27358 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:06:56,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:06:56,326 INFO L93 Difference]: Finished difference Result 18904 states and 27358 transitions. [2021-11-06 14:06:56,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:06:56,327 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-11-06 14:06:56,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:06:56,376 INFO L225 Difference]: With dead ends: 18904 [2021-11-06 14:06:56,377 INFO L226 Difference]: Without dead ends: 18895 [2021-11-06 14:06:56,387 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 14:06:56,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18895 states. [2021-11-06 14:06:56,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18895 to 18895. [2021-11-06 14:06:56,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18895 states, 18676 states have (on average 1.441743414007282) internal successors, (26926), 18694 states have internal predecessors, (26926), 168 states have call successors, (168), 48 states have call predecessors, (168), 48 states have return successors, (252), 160 states have call predecessors, (252), 168 states have call successors, (252) [2021-11-06 14:06:56,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18895 states to 18895 states and 27346 transitions. [2021-11-06 14:06:56,800 INFO L78 Accepts]: Start accepts. Automaton has 18895 states and 27346 transitions. Word has length 45 [2021-11-06 14:06:56,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:06:56,800 INFO L470 AbstractCegarLoop]: Abstraction has 18895 states and 27346 transitions. [2021-11-06 14:06:56,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:06:56,801 INFO L276 IsEmpty]: Start isEmpty. Operand 18895 states and 27346 transitions. [2021-11-06 14:06:56,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-06 14:06:56,808 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:06:56,809 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 14:06:56,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 14:06:56,809 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:06:56,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:06:56,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1779175774, now seen corresponding path program 1 times [2021-11-06 14:06:56,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:06:56,810 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228332040] [2021-11-06 14:06:56,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:06:56,810 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:06:56,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:06:57,018 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 14:06:57,019 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:06:57,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228332040] [2021-11-06 14:06:57,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228332040] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:06:57,019 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:06:57,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:06:57,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650468135] [2021-11-06 14:06:57,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:06:57,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:06:57,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:06:57,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:06:57,022 INFO L87 Difference]: Start difference. First operand 18895 states and 27346 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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 14:06:57,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:06:57,696 INFO L93 Difference]: Finished difference Result 51942 states and 75512 transitions. [2021-11-06 14:06:57,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:06:57,697 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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 75 [2021-11-06 14:06:57,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:06:57,777 INFO L225 Difference]: With dead ends: 51942 [2021-11-06 14:06:57,777 INFO L226 Difference]: Without dead ends: 33097 [2021-11-06 14:06:57,815 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 14:06:57,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33097 states. [2021-11-06 14:06:58,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33097 to 33075. [2021-11-06 14:06:58,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33075 states, 32680 states have (on average 1.452172582619339) internal successors, (47457), 32714 states have internal predecessors, (47457), 296 states have call successors, (296), 96 states have call predecessors, (296), 96 states have return successors, (444), 280 states have call predecessors, (444), 296 states have call successors, (444) [2021-11-06 14:06:58,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33075 states to 33075 states and 48197 transitions. [2021-11-06 14:06:58,473 INFO L78 Accepts]: Start accepts. Automaton has 33075 states and 48197 transitions. Word has length 75 [2021-11-06 14:06:58,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:06:58,474 INFO L470 AbstractCegarLoop]: Abstraction has 33075 states and 48197 transitions. [2021-11-06 14:06:58,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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 14:06:58,474 INFO L276 IsEmpty]: Start isEmpty. Operand 33075 states and 48197 transitions. [2021-11-06 14:06:58,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-06 14:06:58,486 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:06:58,499 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-06 14:06:58,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 14:06:58,500 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:06:58,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:06:58,501 INFO L85 PathProgramCache]: Analyzing trace with hash 2040440903, now seen corresponding path program 1 times [2021-11-06 14:06:58,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:06:58,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596215895] [2021-11-06 14:06:58,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:06:58,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:06:58,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:06:58,722 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 14:06:58,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:06:58,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596215895] [2021-11-06 14:06:58,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596215895] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:06:58,723 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:06:58,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:06:58,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729372678] [2021-11-06 14:06:58,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:06:58,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:06:58,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:06:58,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:06:58,725 INFO L87 Difference]: Start difference. First operand 33075 states and 48197 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:06:59,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:06:59,233 INFO L93 Difference]: Finished difference Result 51490 states and 75022 transitions. [2021-11-06 14:06:59,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:06:59,233 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2021-11-06 14:06:59,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:06:59,270 INFO L225 Difference]: With dead ends: 51490 [2021-11-06 14:06:59,271 INFO L226 Difference]: Without dead ends: 18465 [2021-11-06 14:06:59,316 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 14:06:59,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18465 states. [2021-11-06 14:06:59,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18465 to 18454. [2021-11-06 14:06:59,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18454 states, 18233 states have (on average 1.4517084407393188) internal successors, (26469), 18253 states have internal predecessors, (26469), 164 states have call successors, (164), 54 states have call predecessors, (164), 54 states have return successors, (238), 155 states have call predecessors, (238), 164 states have call successors, (238) [2021-11-06 14:06:59,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18454 states to 18454 states and 26871 transitions. [2021-11-06 14:06:59,652 INFO L78 Accepts]: Start accepts. Automaton has 18454 states and 26871 transitions. Word has length 92 [2021-11-06 14:06:59,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:06:59,652 INFO L470 AbstractCegarLoop]: Abstraction has 18454 states and 26871 transitions. [2021-11-06 14:06:59,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:06:59,653 INFO L276 IsEmpty]: Start isEmpty. Operand 18454 states and 26871 transitions. [2021-11-06 14:06:59,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-06 14:06:59,664 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:06:59,664 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 14:06:59,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 14:06:59,665 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:06:59,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:06:59,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1803068719, now seen corresponding path program 1 times [2021-11-06 14:06:59,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:06:59,667 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842110256] [2021-11-06 14:06:59,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:06:59,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:06:59,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:06:59,913 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 14:06:59,913 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:06:59,914 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842110256] [2021-11-06 14:06:59,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842110256] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:06:59,914 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625888556] [2021-11-06 14:06:59,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:06:59,914 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:06:59,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:06:59,937 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 14:06:59,940 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 14:07:01,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:07:01,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 4287 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-06 14:07:01,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 14:07:01,742 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 14:07:01,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625888556] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:07:01,743 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 14:07:01,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-06 14:07:01,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780974800] [2021-11-06 14:07:01,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 14:07:01,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:07:01,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 14:07:01,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-06 14:07:01,745 INFO L87 Difference]: Start difference. First operand 18454 states and 26871 transitions. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 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 14:07:04,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:07:04,547 INFO L93 Difference]: Finished difference Result 51724 states and 75309 transitions. [2021-11-06 14:07:04,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 14:07:04,548 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 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 105 [2021-11-06 14:07:04,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:07:04,632 INFO L225 Difference]: With dead ends: 51724 [2021-11-06 14:07:04,632 INFO L226 Difference]: Without dead ends: 35093 [2021-11-06 14:07:04,667 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-06 14:07:04,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35093 states. [2021-11-06 14:07:05,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35093 to 18462. [2021-11-06 14:07:05,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18462 states, 18241 states have (on average 1.451510333863275) internal successors, (26477), 18261 states have internal predecessors, (26477), 164 states have call successors, (164), 54 states have call predecessors, (164), 54 states have return successors, (238), 155 states have call predecessors, (238), 164 states have call successors, (238) [2021-11-06 14:07:05,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18462 states to 18462 states and 26879 transitions. [2021-11-06 14:07:05,365 INFO L78 Accepts]: Start accepts. Automaton has 18462 states and 26879 transitions. Word has length 105 [2021-11-06 14:07:05,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:07:05,365 INFO L470 AbstractCegarLoop]: Abstraction has 18462 states and 26879 transitions. [2021-11-06 14:07:05,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 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 14:07:05,365 INFO L276 IsEmpty]: Start isEmpty. Operand 18462 states and 26879 transitions. [2021-11-06 14:07:05,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-06 14:07:05,373 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:07:05,373 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 14:07:05,415 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-06 14:07:05,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:07:05,592 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:07:05,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:07:05,592 INFO L85 PathProgramCache]: Analyzing trace with hash 791951469, now seen corresponding path program 1 times [2021-11-06 14:07:05,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:07:05,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342942967] [2021-11-06 14:07:05,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:07:05,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:07:05,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:07:05,956 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 14:07:05,956 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:07:05,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342942967] [2021-11-06 14:07:05,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342942967] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:07:05,956 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:07:05,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 14:07:05,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383688144] [2021-11-06 14:07:05,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 14:07:05,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:07:05,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 14:07:05,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 14:07:05,957 INFO L87 Difference]: Start difference. First operand 18462 states and 26879 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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 14:07:06,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:07:06,860 INFO L93 Difference]: Finished difference Result 45901 states and 66817 transitions. [2021-11-06 14:07:06,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 14:07:06,861 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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 105 [2021-11-06 14:07:06,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:07:06,919 INFO L225 Difference]: With dead ends: 45901 [2021-11-06 14:07:06,919 INFO L226 Difference]: Without dead ends: 29238 [2021-11-06 14:07:06,945 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 14:07:06,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29238 states. [2021-11-06 14:07:07,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29238 to 18462. [2021-11-06 14:07:07,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18462 states, 18241 states have (on average 1.450852475193246) internal successors, (26465), 18261 states have internal predecessors, (26465), 164 states have call successors, (164), 54 states have call predecessors, (164), 54 states have return successors, (238), 155 states have call predecessors, (238), 164 states have call successors, (238) [2021-11-06 14:07:07,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18462 states to 18462 states and 26867 transitions. [2021-11-06 14:07:07,435 INFO L78 Accepts]: Start accepts. Automaton has 18462 states and 26867 transitions. Word has length 105 [2021-11-06 14:07:07,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:07:07,436 INFO L470 AbstractCegarLoop]: Abstraction has 18462 states and 26867 transitions. [2021-11-06 14:07:07,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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 14:07:07,436 INFO L276 IsEmpty]: Start isEmpty. Operand 18462 states and 26867 transitions. [2021-11-06 14:07:07,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-06 14:07:07,445 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:07:07,445 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 14:07:07,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-06 14:07:07,445 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:07:07,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:07:07,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1207421367, now seen corresponding path program 1 times [2021-11-06 14:07:07,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:07:07,446 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585108652] [2021-11-06 14:07:07,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:07:07,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:07:07,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:07:07,889 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-06 14:07:07,890 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:07:07,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585108652] [2021-11-06 14:07:07,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585108652] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 14:07:07,890 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 14:07:07,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 14:07:07,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077890651] [2021-11-06 14:07:07,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 14:07:07,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 14:07:07,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 14:07:07,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 14:07:07,892 INFO L87 Difference]: Start difference. First operand 18462 states and 26867 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:07:08,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 14:07:08,339 INFO L93 Difference]: Finished difference Result 36876 states and 53677 transitions. [2021-11-06 14:07:08,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 14:07:08,340 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2021-11-06 14:07:08,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 14:07:08,376 INFO L225 Difference]: With dead ends: 36876 [2021-11-06 14:07:08,376 INFO L226 Difference]: Without dead ends: 18463 [2021-11-06 14:07:08,406 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 14:07:08,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18463 states. [2021-11-06 14:07:08,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18463 to 18463. [2021-11-06 14:07:08,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18463 states, 18242 states have (on average 1.4508277601140225) internal successors, (26466), 18262 states have internal predecessors, (26466), 164 states have call successors, (164), 54 states have call predecessors, (164), 54 states have return successors, (238), 155 states have call predecessors, (238), 164 states have call successors, (238) [2021-11-06 14:07:08,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18463 states to 18463 states and 26868 transitions. [2021-11-06 14:07:08,875 INFO L78 Accepts]: Start accepts. Automaton has 18463 states and 26868 transitions. Word has length 107 [2021-11-06 14:07:08,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 14:07:08,876 INFO L470 AbstractCegarLoop]: Abstraction has 18463 states and 26868 transitions. [2021-11-06 14:07:08,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 14:07:08,876 INFO L276 IsEmpty]: Start isEmpty. Operand 18463 states and 26868 transitions. [2021-11-06 14:07:08,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-06 14:07:08,884 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 14:07:08,884 INFO L513 BasicCegarLoop]: trace histogram [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] [2021-11-06 14:07:08,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-06 14:07:08,884 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-06 14:07:08,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 14:07:08,885 INFO L85 PathProgramCache]: Analyzing trace with hash -397423058, now seen corresponding path program 1 times [2021-11-06 14:07:08,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 14:07:08,885 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185859991] [2021-11-06 14:07:08,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:07:08,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 14:07:09,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 14:07:09,201 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-06 14:07:09,201 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 14:07:09,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185859991] [2021-11-06 14:07:09,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185859991] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 14:07:09,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706043914] [2021-11-06 14:07:09,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 14:07:09,203 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 14:07:09,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 14:07:09,205 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 14:07:09,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process Killed by 15