./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--tty--synclinkmp.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-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--tty--synclinkmp.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 2472cece0c5850e18a2b5f94d1cf0b687bb4a9cf075a19883fc5a2f42ed6c5a6 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 17:54:51,086 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 17:54:51,087 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 17:54:51,105 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 17:54:51,106 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 17:54:51,106 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 17:54:51,107 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 17:54:51,112 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 17:54:51,113 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 17:54:51,114 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 17:54:51,114 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 17:54:51,115 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 17:54:51,118 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 17:54:51,119 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 17:54:51,120 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 17:54:51,121 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 17:54:51,124 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 17:54:51,125 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 17:54:51,126 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 17:54:51,130 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 17:54:51,132 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 17:54:51,137 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 17:54:51,138 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 17:54:51,138 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 17:54:51,140 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 17:54:51,140 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 17:54:51,140 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 17:54:51,141 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 17:54:51,141 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 17:54:51,142 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 17:54:51,143 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 17:54:51,143 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 17:54:51,145 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 17:54:51,146 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 17:54:51,147 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 17:54:51,147 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 17:54:51,148 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 17:54:51,148 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 17:54:51,148 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 17:54:51,149 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 17:54:51,150 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 17:54:51,151 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 17:54:51,167 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 17:54:51,167 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 17:54:51,168 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 17:54:51,168 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 17:54:51,169 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 17:54:51,169 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 17:54:51,169 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 17:54:51,169 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 17:54:51,169 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 17:54:51,170 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 17:54:51,170 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 17:54:51,170 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 17:54:51,171 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 17:54:51,171 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 17:54:51,171 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 17:54:51,171 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 17:54:51,171 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 17:54:51,171 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 17:54:51,172 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 17:54:51,172 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 17:54:51,172 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 17:54:51,172 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 17:54:51,172 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 17:54:51,172 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 17:54:51,172 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 17:54:51,173 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 17:54:51,173 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 17:54:51,174 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 17:54:51,174 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 17:54:51,174 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2472cece0c5850e18a2b5f94d1cf0b687bb4a9cf075a19883fc5a2f42ed6c5a6 [2021-11-06 17:54:51,350 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 17:54:51,374 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 17:54:51,375 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 17:54:51,376 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 17:54:51,378 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 17:54:51,379 INFO L432 ainManager$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--tty--synclinkmp.ko-entry_point.cil.out.i [2021-11-06 17:54:51,422 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/614eb27e2/977342723acb41af83fd1c33958a4eb2/FLAG36d0f4f78 [2021-11-06 17:54:52,155 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 17:54:52,156 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--tty--synclinkmp.ko-entry_point.cil.out.i [2021-11-06 17:54:52,199 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/614eb27e2/977342723acb41af83fd1c33958a4eb2/FLAG36d0f4f78 [2021-11-06 17:54:52,691 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/614eb27e2/977342723acb41af83fd1c33958a4eb2 [2021-11-06 17:54:52,693 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 17:54:52,694 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 17:54:52,695 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 17:54:52,695 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 17:54:52,701 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 17:54:52,701 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 05:54:52" (1/1) ... [2021-11-06 17:54:52,702 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b5637be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:54:52, skipping insertion in model container [2021-11-06 17:54:52,702 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 05:54:52" (1/1) ... [2021-11-06 17:54:52,706 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 17:54:52,796 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 17:54:54,770 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--tty--synclinkmp.ko-entry_point.cil.out.i[431060,431073] [2021-11-06 17:54:54,825 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 17:54:54,854 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 17:54:55,340 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--tty--synclinkmp.ko-entry_point.cil.out.i[431060,431073] [2021-11-06 17:54:55,347 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 17:54:55,478 INFO L208 MainTranslator]: Completed translation [2021-11-06 17:54:55,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:54:55 WrapperNode [2021-11-06 17:54:55,479 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 17:54:55,481 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 17:54:55,481 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 17:54:55,481 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 17:54:55,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:54:55" (1/1) ... [2021-11-06 17:54:55,562 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:54:55" (1/1) ... [2021-11-06 17:54:59,799 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 17:54:59,800 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 17:54:59,800 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 17:54:59,800 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 17:54:59,806 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:54:55" (1/1) ... [2021-11-06 17:54:59,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:54:55" (1/1) ... [2021-11-06 17:55:01,020 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:54:55" (1/1) ... [2021-11-06 17:55:01,021 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:54:55" (1/1) ... [2021-11-06 17:55:02,784 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:54:55" (1/1) ... [2021-11-06 17:55:03,511 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:54:55" (1/1) ... [2021-11-06 17:55:03,743 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:54:55" (1/1) ... [2021-11-06 17:55:04,556 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 17:55:04,557 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 17:55:04,557 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 17:55:04,557 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 17:55:04,559 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:54:55" (1/1) ... [2021-11-06 17:55:04,564 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 17:55:04,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 17:55:04,589 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 17:55:04,591 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 17:55:04,622 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-06 17:55:04,622 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-06 17:55:04,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 17:55:04,622 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 17:55:04,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 17:55:04,622 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 17:55:04,623 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 17:55:04,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 17:55:04,623 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-06 17:55:04,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 17:55:04,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 17:55:04,623 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 17:55:04,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 17:55:04,623 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 17:55:04,624 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 17:55:04,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 17:55:04,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 17:55:04,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 18:07:09,059 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 18:07:09,060 INFO L299 CfgBuilder]: Removed 20239 assume(true) statements. [2021-11-06 18:07:09,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:07:09 BoogieIcfgContainer [2021-11-06 18:07:09,101 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 18:07:09,102 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 18:07:09,102 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 18:07:09,114 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 18:07:09,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 05:54:52" (1/3) ... [2021-11-06 18:07:09,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1549b9b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:07:09, skipping insertion in model container [2021-11-06 18:07:09,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:54:55" (2/3) ... [2021-11-06 18:07:09,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1549b9b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:07:09, skipping insertion in model container [2021-11-06 18:07:09,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:07:09" (3/3) ... [2021-11-06 18:07:09,118 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--tty--synclinkmp.ko-entry_point.cil.out.i [2021-11-06 18:07:09,121 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 18:07:09,122 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2021-11-06 18:07:09,248 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 18:07:09,252 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 18:07:09,253 INFO L340 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2021-11-06 18:07:09,885 INFO L276 IsEmpty]: Start isEmpty. Operand has 51574 states, 51558 states have (on average 1.5619884402032662) internal successors, (80533), 51573 states have internal predecessors, (80533), 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 18:07:09,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-06 18:07:09,897 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:07:09,897 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:07:09,898 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-06 18:07:09,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:07:09,907 INFO L85 PathProgramCache]: Analyzing trace with hash 667904686, now seen corresponding path program 1 times [2021-11-06 18:07:09,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:07:09,913 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446051809] [2021-11-06 18:07:09,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:07:09,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:07:10,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:07:10,513 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 18:07:10,515 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:07:10,516 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446051809] [2021-11-06 18:07:10,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446051809] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:07:10,517 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:07:10,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 18:07:10,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857089191] [2021-11-06 18:07:10,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 18:07:10,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:07:10,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 18:07:10,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 18:07:10,603 INFO L87 Difference]: Start difference. First operand has 51574 states, 51558 states have (on average 1.5619884402032662) internal successors, (80533), 51573 states have internal predecessors, (80533), 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) Second operand has 2 states, 2 states have (on average 54.5) internal successors, (109), 2 states have internal predecessors, (109), 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 18:07:11,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:07:11,401 INFO L93 Difference]: Finished difference Result 103144 states and 161061 transitions. [2021-11-06 18:07:11,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 18:07:11,402 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 54.5) internal successors, (109), 2 states have internal predecessors, (109), 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 109 [2021-11-06 18:07:11,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:07:11,579 INFO L225 Difference]: With dead ends: 103144 [2021-11-06 18:07:11,579 INFO L226 Difference]: Without dead ends: 51353 [2021-11-06 18:07:11,671 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 18:07:11,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51353 states. [2021-11-06 18:07:12,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51353 to 51353. [2021-11-06 18:07:13,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51353 states, 51338 states have (on average 1.5601308971911645) internal successors, (80094), 51352 states have internal predecessors, (80094), 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 18:07:13,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51353 states to 51353 states and 80094 transitions. [2021-11-06 18:07:13,281 INFO L78 Accepts]: Start accepts. Automaton has 51353 states and 80094 transitions. Word has length 109 [2021-11-06 18:07:13,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:07:13,282 INFO L470 AbstractCegarLoop]: Abstraction has 51353 states and 80094 transitions. [2021-11-06 18:07:13,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 54.5) internal successors, (109), 2 states have internal predecessors, (109), 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 18:07:13,282 INFO L276 IsEmpty]: Start isEmpty. Operand 51353 states and 80094 transitions. [2021-11-06 18:07:13,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-06 18:07:13,286 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:07:13,286 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 18:07:13,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 18:07:13,286 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-06 18:07:13,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:07:13,287 INFO L85 PathProgramCache]: Analyzing trace with hash 111881436, now seen corresponding path program 1 times [2021-11-06 18:07:13,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:07:13,287 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679461711] [2021-11-06 18:07:13,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:07:13,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:07:13,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:07:14,091 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 18:07:14,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:07:14,091 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679461711] [2021-11-06 18:07:14,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679461711] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:07:14,091 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:07:14,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:07:14,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989849612] [2021-11-06 18:07:14,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:07:14,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:07:14,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:07:14,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:07:14,094 INFO L87 Difference]: Start difference. First operand 51353 states and 80094 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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 18:07:15,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:07:15,998 INFO L93 Difference]: Finished difference Result 144076 states and 224913 transitions. [2021-11-06 18:07:16,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:07:16,002 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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 109 [2021-11-06 18:07:16,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:07:16,159 INFO L225 Difference]: With dead ends: 144076 [2021-11-06 18:07:16,160 INFO L226 Difference]: Without dead ends: 92818 [2021-11-06 18:07:16,219 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 18:07:16,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92818 states. [2021-11-06 18:07:17,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92818 to 92802. [2021-11-06 18:07:17,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92802 states, 92787 states have (on average 1.5618243935034002) internal successors, (144917), 92801 states have internal predecessors, (144917), 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 18:07:17,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92802 states to 92802 states and 144917 transitions. [2021-11-06 18:07:17,803 INFO L78 Accepts]: Start accepts. Automaton has 92802 states and 144917 transitions. Word has length 109 [2021-11-06 18:07:17,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:07:17,804 INFO L470 AbstractCegarLoop]: Abstraction has 92802 states and 144917 transitions. [2021-11-06 18:07:17,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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 18:07:17,805 INFO L276 IsEmpty]: Start isEmpty. Operand 92802 states and 144917 transitions. [2021-11-06 18:07:17,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-06 18:07:17,812 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:07:17,813 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:07:17,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 18:07:17,815 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-06 18:07:17,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:07:17,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1968738608, now seen corresponding path program 1 times [2021-11-06 18:07:17,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:07:17,817 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320929044] [2021-11-06 18:07:17,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:07:17,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:07:18,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:07:18,485 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 18:07:18,485 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:07:18,485 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320929044] [2021-11-06 18:07:18,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320929044] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:07:18,485 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:07:18,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:07:18,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134182695] [2021-11-06 18:07:18,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:07:18,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:07:18,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:07:18,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:07:18,487 INFO L87 Difference]: Start difference. First operand 92802 states and 144917 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 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 18:07:20,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:07:20,819 INFO L93 Difference]: Finished difference Result 265458 states and 414544 transitions. [2021-11-06 18:07:20,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:07:20,820 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 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 122 [2021-11-06 18:07:20,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:07:21,178 INFO L225 Difference]: With dead ends: 265458 [2021-11-06 18:07:21,179 INFO L226 Difference]: Without dead ends: 172751 [2021-11-06 18:07:21,296 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:07:21,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172751 states. [2021-11-06 18:07:23,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172751 to 172717. [2021-11-06 18:07:23,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172717 states, 172702 states have (on average 1.5617364014313673) internal successors, (269715), 172716 states have internal predecessors, (269715), 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 18:07:24,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172717 states to 172717 states and 269715 transitions. [2021-11-06 18:07:24,474 INFO L78 Accepts]: Start accepts. Automaton has 172717 states and 269715 transitions. Word has length 122 [2021-11-06 18:07:24,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 18:07:24,474 INFO L470 AbstractCegarLoop]: Abstraction has 172717 states and 269715 transitions. [2021-11-06 18:07:24,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 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 18:07:24,475 INFO L276 IsEmpty]: Start isEmpty. Operand 172717 states and 269715 transitions. [2021-11-06 18:07:24,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-06 18:07:24,483 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 18:07:24,484 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:07:24,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 18:07:24,484 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 12 more)] === [2021-11-06 18:07:24,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 18:07:24,485 INFO L85 PathProgramCache]: Analyzing trace with hash -368171030, now seen corresponding path program 1 times [2021-11-06 18:07:24,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 18:07:24,485 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371096875] [2021-11-06 18:07:24,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 18:07:24,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 18:07:24,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 18:07:24,820 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 18:07:24,820 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 18:07:24,820 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371096875] [2021-11-06 18:07:24,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371096875] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 18:07:24,821 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 18:07:24,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 18:07:24,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652610542] [2021-11-06 18:07:24,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 18:07:24,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 18:07:24,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 18:07:24,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 18:07:24,822 INFO L87 Difference]: Start difference. First operand 172717 states and 269715 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 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 18:07:29,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 18:07:29,769 INFO L93 Difference]: Finished difference Result 410187 states and 640536 transitions. [2021-11-06 18:07:29,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 18:07:29,769 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 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 130 [2021-11-06 18:07:29,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 18:07:30,238 INFO L225 Difference]: With dead ends: 410187 [2021-11-06 18:07:30,238 INFO L226 Difference]: Without dead ends: 237565 [2021-11-06 18:07:30,369 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 18:07:30,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237565 states.