./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--gr_udc.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c36dfa3b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--gr_udc.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 6932181a2a9c8d4d7c700844e1db6a95829edf2ea099e17754a10b04a114b5cd --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-04 08:45:20,809 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-04 08:45:20,811 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-04 08:45:20,856 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-04 08:45:20,856 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-04 08:45:20,859 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-04 08:45:20,861 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-04 08:45:20,865 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-04 08:45:20,867 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-04 08:45:20,871 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-04 08:45:20,872 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-04 08:45:20,873 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-04 08:45:20,873 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-04 08:45:20,875 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-04 08:45:20,877 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-04 08:45:20,880 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-04 08:45:20,881 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-04 08:45:20,882 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-04 08:45:20,884 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-04 08:45:20,888 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-04 08:45:20,890 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-04 08:45:20,891 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-04 08:45:20,892 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-04 08:45:20,893 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-04 08:45:20,899 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-04 08:45:20,900 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-04 08:45:20,900 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-04 08:45:20,901 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-04 08:45:20,902 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-04 08:45:20,902 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-04 08:45:20,903 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-04 08:45:20,904 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-04 08:45:20,905 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-04 08:45:20,906 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-04 08:45:20,907 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-04 08:45:20,908 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-04 08:45:20,908 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-04 08:45:20,909 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-04 08:45:20,909 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-04 08:45:20,910 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-04 08:45:20,910 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-04 08:45:20,911 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-04 08:45:20,941 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-04 08:45:20,943 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-04 08:45:20,943 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-04 08:45:20,943 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-04 08:45:20,945 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-04 08:45:20,945 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-04 08:45:20,945 INFO L138 SettingsManager]: * Use SBE=true [2021-11-04 08:45:20,946 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-04 08:45:20,946 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-04 08:45:20,946 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-04 08:45:20,947 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-04 08:45:20,947 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-04 08:45:20,947 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-04 08:45:20,947 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-04 08:45:20,947 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-04 08:45:20,948 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-04 08:45:20,948 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-04 08:45:20,948 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-04 08:45:20,948 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-04 08:45:20,948 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 08:45:20,949 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-04 08:45:20,949 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-04 08:45:20,949 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-04 08:45:20,949 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-04 08:45:20,949 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-04 08:45:20,950 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-04 08:45:20,950 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-04 08:45:20,950 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-04 08:45:20,950 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-04 08:45:20,950 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6932181a2a9c8d4d7c700844e1db6a95829edf2ea099e17754a10b04a114b5cd [2021-11-04 08:45:21,181 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-04 08:45:21,219 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-04 08:45:21,221 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-04 08:45:21,222 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-04 08:45:21,224 INFO L275 PluginConnector]: CDTParser initialized [2021-11-04 08:45:21,225 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--gr_udc.ko-entry_point.cil.out.i [2021-11-04 08:45:21,278 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8e706026/041f24d527d74506964f81b59ddecb25/FLAG79f86a0ab [2021-11-04 08:45:21,908 INFO L306 CDTParser]: Found 1 translation units. [2021-11-04 08:45:21,908 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--gr_udc.ko-entry_point.cil.out.i [2021-11-04 08:45:21,945 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8e706026/041f24d527d74506964f81b59ddecb25/FLAG79f86a0ab [2021-11-04 08:45:22,042 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8e706026/041f24d527d74506964f81b59ddecb25 [2021-11-04 08:45:22,045 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-04 08:45:22,046 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-04 08:45:22,053 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-04 08:45:22,053 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-04 08:45:22,055 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-04 08:45:22,056 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 08:45:22" (1/1) ... [2021-11-04 08:45:22,057 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@545d163 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:45:22, skipping insertion in model container [2021-11-04 08:45:22,058 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 08:45:22" (1/1) ... [2021-11-04 08:45:22,063 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-04 08:45:22,166 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-04 08:45:23,523 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--gr_udc.ko-entry_point.cil.out.i[213066,213079] [2021-11-04 08:45:23,560 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 08:45:23,602 INFO L203 MainTranslator]: Completed pre-run [2021-11-04 08:45:23,881 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--gr_udc.ko-entry_point.cil.out.i[213066,213079] [2021-11-04 08:45:23,888 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 08:45:23,958 INFO L208 MainTranslator]: Completed translation [2021-11-04 08:45:23,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:45:23 WrapperNode [2021-11-04 08:45:23,959 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-04 08:45:23,961 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-04 08:45:23,961 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-04 08:45:23,961 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-04 08:45:23,967 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:45:23" (1/1) ... [2021-11-04 08:45:24,057 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:45:23" (1/1) ... [2021-11-04 08:45:24,975 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-04 08:45:24,976 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-04 08:45:24,976 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-04 08:45:24,976 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-04 08:45:24,984 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:45:23" (1/1) ... [2021-11-04 08:45:24,985 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:45:23" (1/1) ... [2021-11-04 08:45:25,347 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:45:23" (1/1) ... [2021-11-04 08:45:25,347 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:45:23" (1/1) ... [2021-11-04 08:45:25,909 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:45:23" (1/1) ... [2021-11-04 08:45:26,130 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:45:23" (1/1) ... [2021-11-04 08:45:26,202 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:45:23" (1/1) ... [2021-11-04 08:45:26,441 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-04 08:45:26,442 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-04 08:45:26,443 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-04 08:45:26,443 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-04 08:45:26,444 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:45:23" (1/1) ... [2021-11-04 08:45:26,467 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 08:45:26,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 08:45:26,501 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) [2021-11-04 08:45:26,564 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 [2021-11-04 08:45:26,600 INFO L130 BoogieDeclarations]: Found specification of procedure gr_finish_request [2021-11-04 08:45:26,601 INFO L138 BoogieDeclarations]: Found implementation of procedure gr_finish_request [2021-11-04 08:45:26,601 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-04 08:45:26,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-04 08:45:26,601 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-04 08:45:26,601 INFO L130 BoogieDeclarations]: Found specification of procedure gr_dequeue [2021-11-04 08:45:26,602 INFO L138 BoogieDeclarations]: Found implementation of procedure gr_dequeue [2021-11-04 08:45:26,602 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-04 08:45:26,602 INFO L130 BoogieDeclarations]: Found specification of procedure gr_ep0_setup [2021-11-04 08:45:26,602 INFO L138 BoogieDeclarations]: Found implementation of procedure gr_ep0_setup [2021-11-04 08:45:26,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-04 08:45:26,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-04 08:45:26,602 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-04 08:45:26,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-04 08:45:26,603 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-04 08:45:26,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-04 08:45:26,603 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-04 08:45:26,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-04 08:45:26,603 INFO L130 BoogieDeclarations]: Found specification of procedure gr_dma_advance [2021-11-04 08:45:26,603 INFO L138 BoogieDeclarations]: Found implementation of procedure gr_dma_advance [2021-11-04 08:45:26,603 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-04 08:45:26,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-04 08:45:26,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-04 08:45:26,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-04 08:45:26,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-04 08:45:37,641 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-04 08:45:37,642 INFO L299 CfgBuilder]: Removed 6866 assume(true) statements. [2021-11-04 08:45:37,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 08:45:37 BoogieIcfgContainer [2021-11-04 08:45:37,652 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-04 08:45:37,655 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-04 08:45:37,655 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-04 08:45:37,658 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-04 08:45:37,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 08:45:22" (1/3) ... [2021-11-04 08:45:37,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5765ba05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 08:45:37, skipping insertion in model container [2021-11-04 08:45:37,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:45:23" (2/3) ... [2021-11-04 08:45:37,660 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5765ba05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 08:45:37, skipping insertion in model container [2021-11-04 08:45:37,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 08:45:37" (3/3) ... [2021-11-04 08:45:37,661 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--gr_udc.ko-entry_point.cil.out.i [2021-11-04 08:45:37,666 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-04 08:45:37,666 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 84 error locations. [2021-11-04 08:45:37,736 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-04 08:45:37,754 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 [2021-11-04 08:45:37,754 INFO L340 AbstractCegarLoop]: Starting to check reachability of 84 error locations. [2021-11-04 08:45:37,853 INFO L276 IsEmpty]: Start isEmpty. Operand has 6972 states, 6832 states have (on average 1.4111533957845432) internal successors, (9641), 6954 states have internal predecessors, (9641), 50 states have call successors, (50), 5 states have call predecessors, (50), 5 states have return successors, (50), 48 states have call predecessors, (50), 50 states have call successors, (50) [2021-11-04 08:45:37,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-04 08:45:37,872 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:45:37,872 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 08:45:37,873 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr53ASSERT_VIOLATIONERROR_FUNCTION === [gr_ep0_setupErr0ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr1ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr2ASSERT_VIOLATIONERROR_FUNCTION (and 81 more)] === [2021-11-04 08:45:37,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:45:37,878 INFO L85 PathProgramCache]: Analyzing trace with hash 2097595857, now seen corresponding path program 1 times [2021-11-04 08:45:37,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:45:37,885 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706876847] [2021-11-04 08:45:37,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:45:37,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:45:38,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:45:38,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 08:45:38,569 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:45:38,569 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706876847] [2021-11-04 08:45:38,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706876847] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 08:45:38,570 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 08:45:38,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 08:45:38,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945196030] [2021-11-04 08:45:38,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 08:45:38,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-04 08:45:38,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:45:38,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-04 08:45:38,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-04 08:45:38,621 INFO L87 Difference]: Start difference. First operand has 6972 states, 6832 states have (on average 1.4111533957845432) internal successors, (9641), 6954 states have internal predecessors, (9641), 50 states have call successors, (50), 5 states have call predecessors, (50), 5 states have return successors, (50), 48 states have call predecessors, (50), 50 states have call successors, (50) Second operand has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:45:40,044 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 08:46:13,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 08:46:13,123 INFO L93 Difference]: Finished difference Result 13940 states and 19527 transitions. [2021-11-04 08:46:13,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-04 08:46:13,129 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-11-04 08:46:13,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 08:46:13,188 INFO L225 Difference]: With dead ends: 13940 [2021-11-04 08:46:13,189 INFO L226 Difference]: Without dead ends: 6918 [2021-11-04 08:46:13,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-04 08:46:13,218 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9275 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31046.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 9275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 45.36ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33686.90ms IncrementalHoareTripleChecker+Time [2021-11-04 08:46:13,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 148 Invalid, 9275 Unknown, 0 Unchecked, 45.36ms Time], IncrementalHoareTripleChecker [0 Valid, 9275 Invalid, 0 Unknown, 0 Unchecked, 33686.90ms Time] [2021-11-04 08:46:13,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6918 states. [2021-11-04 08:46:13,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6918 to 6918. [2021-11-04 08:46:13,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6918 states, 6779 states have (on average 1.3600826080542854) internal successors, (9220), 6900 states have internal predecessors, (9220), 50 states have call successors, (50), 5 states have call predecessors, (50), 5 states have return successors, (50), 48 states have call predecessors, (50), 50 states have call successors, (50) [2021-11-04 08:46:13,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6918 states to 6918 states and 9320 transitions. [2021-11-04 08:46:13,488 INFO L78 Accepts]: Start accepts. Automaton has 6918 states and 9320 transitions. Word has length 55 [2021-11-04 08:46:13,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 08:46:13,488 INFO L470 AbstractCegarLoop]: Abstraction has 6918 states and 9320 transitions. [2021-11-04 08:46:13,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:46:13,489 INFO L276 IsEmpty]: Start isEmpty. Operand 6918 states and 9320 transitions. [2021-11-04 08:46:13,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-04 08:46:13,492 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:46:13,492 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 08:46:13,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-04 08:46:13,493 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr53ASSERT_VIOLATIONERROR_FUNCTION === [gr_ep0_setupErr0ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr1ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr2ASSERT_VIOLATIONERROR_FUNCTION (and 81 more)] === [2021-11-04 08:46:13,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:46:13,494 INFO L85 PathProgramCache]: Analyzing trace with hash -2141064503, now seen corresponding path program 1 times [2021-11-04 08:46:13,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:46:13,495 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365365563] [2021-11-04 08:46:13,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:46:13,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:46:13,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:46:13,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 08:46:13,982 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:46:13,982 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365365563] [2021-11-04 08:46:13,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365365563] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 08:46:13,983 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 08:46:13,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 08:46:13,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281284215] [2021-11-04 08:46:13,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 08:46:13,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 08:46:13,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:46:13,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 08:46:13,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 08:46:13,985 INFO L87 Difference]: Start difference. First operand 6918 states and 9320 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:46:16,071 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 08:47:22,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 08:47:22,591 INFO L93 Difference]: Finished difference Result 13818 states and 18623 transitions. [2021-11-04 08:47:22,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 08:47:22,592 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-11-04 08:47:22,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 08:47:22,618 INFO L225 Difference]: With dead ends: 13818 [2021-11-04 08:47:22,618 INFO L226 Difference]: Without dead ends: 6920 [2021-11-04 08:47:22,633 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 72.06ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 08:47:22,634 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 0 mSDsluCounter, 9145 mSDsCounter, 0 mSdLazyCounter, 18436 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 63217.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 18439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 108.56ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18436 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 67722.85ms IncrementalHoareTripleChecker+Time [2021-11-04 08:47:22,634 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 200 Invalid, 18439 Unknown, 0 Unchecked, 108.56ms Time], IncrementalHoareTripleChecker [2 Valid, 18436 Invalid, 1 Unknown, 0 Unchecked, 67722.85ms Time] [2021-11-04 08:47:22,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6920 states. [2021-11-04 08:47:22,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6920 to 6920. [2021-11-04 08:47:22,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6920 states, 6781 states have (on average 1.3599764046600797) internal successors, (9222), 6902 states have internal predecessors, (9222), 50 states have call successors, (50), 5 states have call predecessors, (50), 5 states have return successors, (50), 48 states have call predecessors, (50), 50 states have call successors, (50) [2021-11-04 08:47:22,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6920 states to 6920 states and 9322 transitions. [2021-11-04 08:47:22,804 INFO L78 Accepts]: Start accepts. Automaton has 6920 states and 9322 transitions. Word has length 55 [2021-11-04 08:47:22,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 08:47:22,805 INFO L470 AbstractCegarLoop]: Abstraction has 6920 states and 9322 transitions. [2021-11-04 08:47:22,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:47:22,810 INFO L276 IsEmpty]: Start isEmpty. Operand 6920 states and 9322 transitions. [2021-11-04 08:47:22,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-04 08:47:22,813 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:47:22,813 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 08:47:22,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-04 08:47:22,813 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr53ASSERT_VIOLATIONERROR_FUNCTION === [gr_ep0_setupErr0ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr1ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr2ASSERT_VIOLATIONERROR_FUNCTION (and 81 more)] === [2021-11-04 08:47:22,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:47:22,814 INFO L85 PathProgramCache]: Analyzing trace with hash -543408409, now seen corresponding path program 1 times [2021-11-04 08:47:22,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:47:22,814 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508031968] [2021-11-04 08:47:22,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:47:22,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:47:22,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:47:23,153 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-04 08:47:23,154 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:47:23,154 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508031968] [2021-11-04 08:47:23,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508031968] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 08:47:23,154 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 08:47:23,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 08:47:23,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921504372] [2021-11-04 08:47:23,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 08:47:23,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 08:47:23,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:47:23,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 08:47:23,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 08:47:23,156 INFO L87 Difference]: Start difference. First operand 6920 states and 9322 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:47:25,240 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 08:48:32,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 08:48:32,298 INFO L93 Difference]: Finished difference Result 13817 states and 18623 transitions. [2021-11-04 08:48:32,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 08:48:32,298 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-04 08:48:32,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 08:48:32,320 INFO L225 Difference]: With dead ends: 13817 [2021-11-04 08:48:32,320 INFO L226 Difference]: Without dead ends: 6925 [2021-11-04 08:48:32,338 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.87ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 08:48:32,339 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 0 mSDsluCounter, 9145 mSDsCounter, 0 mSdLazyCounter, 18433 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 63140.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 18442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 94.23ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 18433 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 68380.68ms IncrementalHoareTripleChecker+Time [2021-11-04 08:48:32,339 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 200 Invalid, 18442 Unknown, 0 Unchecked, 94.23ms Time], IncrementalHoareTripleChecker [8 Valid, 18433 Invalid, 1 Unknown, 0 Unchecked, 68380.68ms Time] [2021-11-04 08:48:32,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6925 states. [2021-11-04 08:48:32,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6925 to 6925. [2021-11-04 08:48:32,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6925 states, 6786 states have (on average 1.3597111700559976) internal successors, (9227), 6907 states have internal predecessors, (9227), 50 states have call successors, (50), 5 states have call predecessors, (50), 5 states have return successors, (50), 48 states have call predecessors, (50), 50 states have call successors, (50) [2021-11-04 08:48:32,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6925 states to 6925 states and 9327 transitions. [2021-11-04 08:48:32,480 INFO L78 Accepts]: Start accepts. Automaton has 6925 states and 9327 transitions. Word has length 57 [2021-11-04 08:48:32,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 08:48:32,480 INFO L470 AbstractCegarLoop]: Abstraction has 6925 states and 9327 transitions. [2021-11-04 08:48:32,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 08:48:32,481 INFO L276 IsEmpty]: Start isEmpty. Operand 6925 states and 9327 transitions. [2021-11-04 08:48:32,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-04 08:48:32,482 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:48:32,482 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 08:48:32,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-04 08:48:32,483 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr53ASSERT_VIOLATIONERROR_FUNCTION === [gr_ep0_setupErr0ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr1ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr2ASSERT_VIOLATIONERROR_FUNCTION (and 81 more)] === [2021-11-04 08:48:32,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:48:32,484 INFO L85 PathProgramCache]: Analyzing trace with hash 408581138, now seen corresponding path program 1 times [2021-11-04 08:48:32,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:48:32,484 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963771455] [2021-11-04 08:48:32,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:48:32,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:48:32,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:48:32,854 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-04 08:48:32,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:48:32,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963771455] [2021-11-04 08:48:32,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963771455] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 08:48:32,854 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 08:48:32,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 08:48:32,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701301376] [2021-11-04 08:48:32,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 08:48:32,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 08:48:32,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:48:32,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 08:48:32,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 08:48:32,856 INFO L87 Difference]: Start difference. First operand 6925 states and 9327 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2021-11-04 08:48:34,941 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 08:49:53,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 08:49:53,166 INFO L93 Difference]: Finished difference Result 20270 states and 27308 transitions. [2021-11-04 08:49:53,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 08:49:53,167 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 62 [2021-11-04 08:49:53,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 08:49:53,210 INFO L225 Difference]: With dead ends: 20270 [2021-11-04 08:49:53,210 INFO L226 Difference]: Without dead ends: 13392 [2021-11-04 08:49:53,224 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.07ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 08:49:53,225 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 8698 mSDsluCounter, 9285 mSDsCounter, 0 mSdLazyCounter, 18436 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 70641.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8698 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 18438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 109.39ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18436 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 79109.48ms IncrementalHoareTripleChecker+Time [2021-11-04 08:49:53,225 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8698 Valid, 248 Invalid, 18438 Unknown, 0 Unchecked, 109.39ms Time], IncrementalHoareTripleChecker [1 Valid, 18436 Invalid, 1 Unknown, 0 Unchecked, 79109.48ms Time] [2021-11-04 08:49:53,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13392 states. [2021-11-04 08:49:53,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13392 to 13232. [2021-11-04 08:49:53,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13232 states, 13040 states have (on average 1.3618098159509202) internal successors, (17758), 13198 states have internal predecessors, (17758), 98 states have call successors, (98), 10 states have call predecessors, (98), 10 states have return successors, (98), 94 states have call predecessors, (98), 98 states have call successors, (98) [2021-11-04 08:49:53,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13232 states to 13232 states and 17954 transitions. [2021-11-04 08:49:53,479 INFO L78 Accepts]: Start accepts. Automaton has 13232 states and 17954 transitions. Word has length 62 [2021-11-04 08:49:53,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 08:49:53,480 INFO L470 AbstractCegarLoop]: Abstraction has 13232 states and 17954 transitions. [2021-11-04 08:49:53,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2021-11-04 08:49:53,480 INFO L276 IsEmpty]: Start isEmpty. Operand 13232 states and 17954 transitions. [2021-11-04 08:49:53,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-04 08:49:53,490 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:49:53,491 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 08:49:53,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-04 08:49:53,491 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [gr_ep0_setupErr0ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr1ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr2ASSERT_VIOLATIONERROR_FUNCTION (and 81 more)] === [2021-11-04 08:49:53,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:49:53,492 INFO L85 PathProgramCache]: Analyzing trace with hash -127313367, now seen corresponding path program 1 times [2021-11-04 08:49:53,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:49:53,493 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172061936] [2021-11-04 08:49:53,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:49:53,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:49:53,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:49:53,882 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-04 08:49:53,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:49:53,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172061936] [2021-11-04 08:49:53,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172061936] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 08:49:53,882 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 08:49:53,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 08:49:53,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498288494] [2021-11-04 08:49:53,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 08:49:53,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 08:49:53,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:49:53,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 08:49:53,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 08:49:53,884 INFO L87 Difference]: Start difference. First operand 13232 states and 17954 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 3 states have internal predecessors, (100), 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) [2021-11-04 08:49:55,969 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 08:52:01,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 08:52:01,549 INFO L93 Difference]: Finished difference Result 44093 states and 59784 transitions. [2021-11-04 08:52:01,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 08:52:01,550 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 3 states have internal predecessors, (100), 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 100 [2021-11-04 08:52:01,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 08:52:01,636 INFO L225 Difference]: With dead ends: 44093 [2021-11-04 08:52:01,636 INFO L226 Difference]: Without dead ends: 30908 [2021-11-04 08:52:01,675 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 64.03ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 08:52:01,676 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 12521 mSDsluCounter, 18665 mSDsCounter, 0 mSdLazyCounter, 31602 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 112216.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12544 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 31613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 212.88ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 31602 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 125839.68ms IncrementalHoareTripleChecker+Time [2021-11-04 08:52:01,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12544 Valid, 482 Invalid, 31613 Unknown, 0 Unchecked, 212.88ms Time], IncrementalHoareTripleChecker [10 Valid, 31602 Invalid, 1 Unknown, 0 Unchecked, 125839.68ms Time] [2021-11-04 08:52:01,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30908 states. [2021-11-04 08:52:02,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30908 to 23889. [2021-11-04 08:52:02,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23889 states, 23599 states have (on average 1.363532353065808) internal successors, (32178), 23824 states have internal predecessors, (32178), 186 states have call successors, (186), 20 states have call predecessors, (186), 20 states have return successors, (186), 178 states have call predecessors, (186), 186 states have call successors, (186) [2021-11-04 08:52:02,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23889 states to 23889 states and 32550 transitions. [2021-11-04 08:52:02,382 INFO L78 Accepts]: Start accepts. Automaton has 23889 states and 32550 transitions. Word has length 100 [2021-11-04 08:52:02,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 08:52:02,384 INFO L470 AbstractCegarLoop]: Abstraction has 23889 states and 32550 transitions. [2021-11-04 08:52:02,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 3 states have internal predecessors, (100), 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) [2021-11-04 08:52:02,385 INFO L276 IsEmpty]: Start isEmpty. Operand 23889 states and 32550 transitions. [2021-11-04 08:52:02,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-04 08:52:02,401 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:52:02,401 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 08:52:02,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-04 08:52:02,402 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [gr_ep0_setupErr0ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr1ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr2ASSERT_VIOLATIONERROR_FUNCTION (and 81 more)] === [2021-11-04 08:52:02,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:52:02,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1918668607, now seen corresponding path program 1 times [2021-11-04 08:52:02,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:52:02,404 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985569167] [2021-11-04 08:52:02,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:52:02,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:52:02,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:52:02,745 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-04 08:52:02,745 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:52:02,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985569167] [2021-11-04 08:52:02,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985569167] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 08:52:02,745 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 08:52:02,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 08:52:02,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585773275] [2021-11-04 08:52:02,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 08:52:02,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 08:52:02,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:52:02,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 08:52:02,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 08:52:02,747 INFO L87 Difference]: Start difference. First operand 23889 states and 32550 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 3 states have internal predecessors, (101), 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) [2021-11-04 08:52:04,830 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 08:54:23,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 08:54:23,437 INFO L93 Difference]: Finished difference Result 63845 states and 86790 transitions. [2021-11-04 08:54:23,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 08:54:23,438 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 3 states have internal predecessors, (101), 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 101 [2021-11-04 08:54:23,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 08:54:23,563 INFO L225 Difference]: With dead ends: 63845 [2021-11-04 08:54:23,563 INFO L226 Difference]: Without dead ends: 46498 [2021-11-04 08:54:23,616 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 66.79ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 08:54:23,617 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 16481 mSDsluCounter, 18644 mSDsCounter, 0 mSdLazyCounter, 31593 mSolverCounterSat, 37 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 120212.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16504 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 31631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 229.13ms SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 31593 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 138363.16ms IncrementalHoareTripleChecker+Time [2021-11-04 08:54:23,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16504 Valid, 482 Invalid, 31631 Unknown, 0 Unchecked, 229.13ms Time], IncrementalHoareTripleChecker [37 Valid, 31593 Invalid, 1 Unknown, 0 Unchecked, 138363.16ms Time] [2021-11-04 08:54:23,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46498 states. [2021-11-04 08:54:24,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46498 to 35362. [2021-11-04 08:54:24,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35362 states, 34984 states have (on average 1.3637662931625887) internal successors, (47710), 35268 states have internal predecessors, (47710), 264 states have call successors, (264), 30 states have call predecessors, (264), 30 states have return successors, (264), 252 states have call predecessors, (264), 264 states have call successors, (264) [2021-11-04 08:54:24,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35362 states to 35362 states and 48238 transitions. [2021-11-04 08:54:24,600 INFO L78 Accepts]: Start accepts. Automaton has 35362 states and 48238 transitions. Word has length 101 [2021-11-04 08:54:24,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 08:54:24,600 INFO L470 AbstractCegarLoop]: Abstraction has 35362 states and 48238 transitions. [2021-11-04 08:54:24,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 3 states have internal predecessors, (101), 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) [2021-11-04 08:54:24,601 INFO L276 IsEmpty]: Start isEmpty. Operand 35362 states and 48238 transitions. [2021-11-04 08:54:24,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-04 08:54:24,621 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:54:24,621 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 08:54:24,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-04 08:54:24,622 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [gr_ep0_setupErr0ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr1ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr2ASSERT_VIOLATIONERROR_FUNCTION (and 81 more)] === [2021-11-04 08:54:24,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:54:24,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1517756219, now seen corresponding path program 1 times [2021-11-04 08:54:24,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:54:24,622 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071499596] [2021-11-04 08:54:24,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:54:24,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:54:24,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:54:24,924 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-04 08:54:24,924 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:54:24,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071499596] [2021-11-04 08:54:24,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071499596] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 08:54:24,924 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 08:54:24,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 08:54:24,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607505883] [2021-11-04 08:54:24,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 08:54:24,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 08:54:24,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:54:24,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 08:54:24,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 08:54:24,926 INFO L87 Difference]: Start difference. First operand 35362 states and 48238 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 3 states have internal predecessors, (102), 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) [2021-11-04 08:54:27,010 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 08:57:19,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 08:57:19,077 INFO L93 Difference]: Finished difference Result 91776 states and 124930 transitions. [2021-11-04 08:57:19,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 08:57:19,078 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 3 states have internal predecessors, (102), 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 102 [2021-11-04 08:57:19,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 08:57:19,216 INFO L225 Difference]: With dead ends: 91776 [2021-11-04 08:57:19,216 INFO L226 Difference]: Without dead ends: 62412 [2021-11-04 08:57:19,290 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 65.25ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 08:57:19,292 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 16495 mSDsluCounter, 22544 mSDsCounter, 0 mSdLazyCounter, 35471 mSolverCounterSat, 38 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 146676.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16518 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 35510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 235.16ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 35471 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 171289.87ms IncrementalHoareTripleChecker+Time [2021-11-04 08:57:19,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16518 Valid, 505 Invalid, 35510 Unknown, 0 Unchecked, 235.16ms Time], IncrementalHoareTripleChecker [38 Valid, 35471 Invalid, 1 Unknown, 0 Unchecked, 171289.87ms Time] [2021-11-04 08:57:19,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62412 states. [2021-11-04 08:57:20,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62412 to 45853. [2021-11-04 08:57:20,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45853 states, 45397 states have (on average 1.3640548934951648) internal successors, (61924), 45732 states have internal predecessors, (61924), 332 states have call successors, (332), 40 states have call predecessors, (332), 40 states have return successors, (332), 316 states have call predecessors, (332), 332 states have call successors, (332) [2021-11-04 08:57:20,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45853 states to 45853 states and 62588 transitions. [2021-11-04 08:57:20,444 INFO L78 Accepts]: Start accepts. Automaton has 45853 states and 62588 transitions. Word has length 102 [2021-11-04 08:57:20,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 08:57:20,444 INFO L470 AbstractCegarLoop]: Abstraction has 45853 states and 62588 transitions. [2021-11-04 08:57:20,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 3 states have internal predecessors, (102), 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) [2021-11-04 08:57:20,445 INFO L276 IsEmpty]: Start isEmpty. Operand 45853 states and 62588 transitions. [2021-11-04 08:57:20,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-04 08:57:20,456 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 08:57:20,456 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 08:57:20,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-04 08:57:20,457 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [gr_ep0_setupErr0ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr1ASSERT_VIOLATIONERROR_FUNCTION, gr_ep0_setupErr2ASSERT_VIOLATIONERROR_FUNCTION (and 81 more)] === [2021-11-04 08:57:20,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 08:57:20,458 INFO L85 PathProgramCache]: Analyzing trace with hash -896269721, now seen corresponding path program 1 times [2021-11-04 08:57:20,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 08:57:20,461 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797812171] [2021-11-04 08:57:20,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 08:57:20,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 08:57:20,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 08:57:20,758 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-04 08:57:20,758 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 08:57:20,758 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797812171] [2021-11-04 08:57:20,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797812171] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 08:57:20,759 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 08:57:20,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 08:57:20,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120411345] [2021-11-04 08:57:20,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 08:57:20,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 08:57:20,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 08:57:20,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 08:57:20,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 08:57:20,760 INFO L87 Difference]: Start difference. First operand 45853 states and 62588 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 3 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) [2021-11-04 08:57:22,846 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15