./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--net--ethernet--amd--amd8111e.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--net--ethernet--amd--amd8111e.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 f5287aa284221e5fd9453b6be2206814d99b5890aba823bfb498c43964518ada --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 17:16:04,309 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 17:16:04,310 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 17:16:04,360 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 17:16:04,361 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 17:16:04,362 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 17:16:04,362 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 17:16:04,363 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 17:16:04,364 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 17:16:04,365 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 17:16:04,366 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 17:16:04,366 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 17:16:04,366 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 17:16:04,367 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 17:16:04,368 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 17:16:04,369 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 17:16:04,369 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 17:16:04,370 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 17:16:04,371 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 17:16:04,372 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 17:16:04,373 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 17:16:04,374 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 17:16:04,375 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 17:16:04,376 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 17:16:04,377 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 17:16:04,378 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 17:16:04,378 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 17:16:04,379 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 17:16:04,379 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 17:16:04,380 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 17:16:04,380 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 17:16:04,380 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 17:16:04,381 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 17:16:04,381 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 17:16:04,382 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 17:16:04,382 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 17:16:04,383 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 17:16:04,383 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 17:16:04,383 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 17:16:04,384 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 17:16:04,384 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 17:16:04,385 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 17:16:04,400 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 17:16:04,400 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 17:16:04,400 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 17:16:04,401 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 17:16:04,401 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 17:16:04,401 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 17:16:04,402 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 17:16:04,402 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 17:16:04,402 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 17:16:04,402 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 17:16:04,402 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 17:16:04,402 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 17:16:04,403 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 17:16:04,403 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 17:16:04,403 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 17:16:04,403 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 17:16:04,403 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 17:16:04,403 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 17:16:04,403 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 17:16:04,404 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 17:16:04,404 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 17:16:04,404 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 17:16:04,404 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 17:16:04,404 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 17:16:04,404 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 17:16:04,404 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 17:16:04,405 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 17:16:04,405 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 17:16:04,405 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 17:16:04,405 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f5287aa284221e5fd9453b6be2206814d99b5890aba823bfb498c43964518ada [2021-11-06 17:16:04,560 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 17:16:04,585 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 17:16:04,587 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 17:16:04,588 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 17:16:04,588 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 17:16:04,589 INFO L432 ainManager$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--net--ethernet--amd--amd8111e.ko-entry_point.cil.out.i [2021-11-06 17:16:04,633 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14c41d712/3e58ed1fd7164c219f77f5904a9fc192/FLAGe2b2bfc88 [2021-11-06 17:16:05,181 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 17:16:05,181 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--net--ethernet--amd--amd8111e.ko-entry_point.cil.out.i [2021-11-06 17:16:05,212 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14c41d712/3e58ed1fd7164c219f77f5904a9fc192/FLAGe2b2bfc88 [2021-11-06 17:16:05,374 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14c41d712/3e58ed1fd7164c219f77f5904a9fc192 [2021-11-06 17:16:05,376 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 17:16:05,377 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 17:16:05,378 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 17:16:05,378 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 17:16:05,380 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 17:16:05,380 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 05:16:05" (1/1) ... [2021-11-06 17:16:05,381 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fc24963 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:16:05, skipping insertion in model container [2021-11-06 17:16:05,381 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 05:16:05" (1/1) ... [2021-11-06 17:16:05,386 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 17:16:05,476 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 17:16:06,606 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--net--ethernet--amd--amd8111e.ko-entry_point.cil.out.i[274049,274062] [2021-11-06 17:16:06,644 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 17:16:06,669 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 17:16:06,879 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--net--ethernet--amd--amd8111e.ko-entry_point.cil.out.i[274049,274062] [2021-11-06 17:16:06,884 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 17:16:07,009 INFO L208 MainTranslator]: Completed translation [2021-11-06 17:16:07,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:16:07 WrapperNode [2021-11-06 17:16:07,009 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 17:16:07,011 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 17:16:07,011 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 17:16:07,011 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 17:16:07,016 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:16:07" (1/1) ... [2021-11-06 17:16:07,077 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:16:07" (1/1) ... [2021-11-06 17:16:07,737 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 17:16:07,738 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 17:16:07,738 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 17:16:07,738 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 17:16:07,744 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:16:07" (1/1) ... [2021-11-06 17:16:07,744 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:16:07" (1/1) ... [2021-11-06 17:16:07,928 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:16:07" (1/1) ... [2021-11-06 17:16:07,991 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:16:07" (1/1) ... [2021-11-06 17:16:08,382 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:16:07" (1/1) ... [2021-11-06 17:16:08,553 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:16:07" (1/1) ... [2021-11-06 17:16:08,658 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:16:07" (1/1) ... [2021-11-06 17:16:08,843 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 17:16:08,845 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 17:16:08,845 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 17:16:08,845 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 17:16:08,846 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:16:07" (1/1) ... [2021-11-06 17:16:08,867 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 17:16:08,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 17:16:08,888 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 17:16:08,890 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 17:16:08,911 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 17:16:08,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 17:16:08,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 17:16:08,912 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 17:16:08,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 17:16:08,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 17:16:08,912 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 17:16:08,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 17:16:08,912 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 17:16:08,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 17:16:08,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 17:16:08,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 17:16:08,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 17:16:08,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 17:16:08,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 17:16:17,814 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 17:16:17,815 INFO L299 CfgBuilder]: Removed 7407 assume(true) statements. [2021-11-06 17:16:17,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 05:16:17 BoogieIcfgContainer [2021-11-06 17:16:17,821 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 17:16:17,822 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 17:16:17,822 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 17:16:17,825 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 17:16:17,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 05:16:05" (1/3) ... [2021-11-06 17:16:17,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aa987b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 05:16:17, skipping insertion in model container [2021-11-06 17:16:17,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:16:07" (2/3) ... [2021-11-06 17:16:17,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aa987b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 05:16:17, skipping insertion in model container [2021-11-06 17:16:17,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 05:16:17" (3/3) ... [2021-11-06 17:16:17,827 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--amd--amd8111e.ko-entry_point.cil.out.i [2021-11-06 17:16:17,831 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 17:16:17,832 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2021-11-06 17:16:17,885 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 17:16:17,889 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 17:16:17,889 INFO L340 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2021-11-06 17:16:17,939 INFO L276 IsEmpty]: Start isEmpty. Operand has 5737 states, 5727 states have (on average 1.3352540597171294) internal successors, (7647), 5736 states have internal predecessors, (7647), 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 17:16:17,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-06 17:16:17,969 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:16:17,970 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] [2021-11-06 17:16:17,970 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-06 17:16:17,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:16:17,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1668420062, now seen corresponding path program 1 times [2021-11-06 17:16:17,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:16:17,979 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658530048] [2021-11-06 17:16:17,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:16:17,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:16:18,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:16:18,390 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 17:16:18,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:16:18,391 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658530048] [2021-11-06 17:16:18,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658530048] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:16:18,391 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:16:18,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 17:16:18,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877120714] [2021-11-06 17:16:18,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 17:16:18,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:16:18,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 17:16:18,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 17:16:18,418 INFO L87 Difference]: Start difference. First operand has 5737 states, 5727 states have (on average 1.3352540597171294) internal successors, (7647), 5736 states have internal predecessors, (7647), 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 37.0) internal successors, (74), 2 states have internal predecessors, (74), 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 17:16:18,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:16:18,553 INFO L93 Difference]: Finished difference Result 11470 states and 15289 transitions. [2021-11-06 17:16:18,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 17:16:18,555 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 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 74 [2021-11-06 17:16:18,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:16:18,586 INFO L225 Difference]: With dead ends: 11470 [2021-11-06 17:16:18,587 INFO L226 Difference]: Without dead ends: 5671 [2021-11-06 17:16:18,599 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 17:16:18,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5671 states. [2021-11-06 17:16:18,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5671 to 5671. [2021-11-06 17:16:18,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5671 states, 5662 states have (on average 1.318968562345461) internal successors, (7468), 5670 states have internal predecessors, (7468), 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 17:16:18,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5671 states to 5671 states and 7468 transitions. [2021-11-06 17:16:18,797 INFO L78 Accepts]: Start accepts. Automaton has 5671 states and 7468 transitions. Word has length 74 [2021-11-06 17:16:18,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:16:18,798 INFO L470 AbstractCegarLoop]: Abstraction has 5671 states and 7468 transitions. [2021-11-06 17:16:18,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 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 17:16:18,798 INFO L276 IsEmpty]: Start isEmpty. Operand 5671 states and 7468 transitions. [2021-11-06 17:16:18,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-06 17:16:18,805 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:16:18,805 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] [2021-11-06 17:16:18,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 17:16:18,809 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-06 17:16:18,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:16:18,811 INFO L85 PathProgramCache]: Analyzing trace with hash 661915882, now seen corresponding path program 1 times [2021-11-06 17:16:18,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:16:18,812 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124386025] [2021-11-06 17:16:18,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:16:18,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:16:18,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:16:18,932 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 17:16:18,932 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:16:18,932 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124386025] [2021-11-06 17:16:18,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124386025] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:16:18,933 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:16:18,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:16:18,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512677769] [2021-11-06 17:16:18,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:16:18,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:16:18,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:16:18,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:16:18,935 INFO L87 Difference]: Start difference. First operand 5671 states and 7468 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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 17:16:19,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:16:19,326 INFO L93 Difference]: Finished difference Result 13492 states and 17879 transitions. [2021-11-06 17:16:19,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:16:19,327 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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 74 [2021-11-06 17:16:19,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:16:19,348 INFO L225 Difference]: With dead ends: 13492 [2021-11-06 17:16:19,348 INFO L226 Difference]: Without dead ends: 7861 [2021-11-06 17:16:19,355 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 17:16:19,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7861 states. [2021-11-06 17:16:19,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7861 to 7799. [2021-11-06 17:16:19,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7799 states, 7790 states have (on average 1.332349165596919) internal successors, (10379), 7798 states have internal predecessors, (10379), 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 17:16:19,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7799 states to 7799 states and 10379 transitions. [2021-11-06 17:16:19,474 INFO L78 Accepts]: Start accepts. Automaton has 7799 states and 10379 transitions. Word has length 74 [2021-11-06 17:16:19,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:16:19,475 INFO L470 AbstractCegarLoop]: Abstraction has 7799 states and 10379 transitions. [2021-11-06 17:16:19,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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 17:16:19,475 INFO L276 IsEmpty]: Start isEmpty. Operand 7799 states and 10379 transitions. [2021-11-06 17:16:19,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-06 17:16:19,478 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:16:19,479 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] [2021-11-06 17:16:19,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 17:16:19,479 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-06 17:16:19,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:16:19,480 INFO L85 PathProgramCache]: Analyzing trace with hash -715939706, now seen corresponding path program 1 times [2021-11-06 17:16:19,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:16:19,480 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542649288] [2021-11-06 17:16:19,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:16:19,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:16:19,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:16:19,565 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 17:16:19,566 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:16:19,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542649288] [2021-11-06 17:16:19,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542649288] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:16:19,566 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:16:19,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:16:19,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092148573] [2021-11-06 17:16:19,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:16:19,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:16:19,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:16:19,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:16:19,568 INFO L87 Difference]: Start difference. First operand 7799 states and 10379 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 17:16:19,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:16:19,803 INFO L93 Difference]: Finished difference Result 21417 states and 28630 transitions. [2021-11-06 17:16:19,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:16:19,803 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 83 [2021-11-06 17:16:19,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:16:19,841 INFO L225 Difference]: With dead ends: 21417 [2021-11-06 17:16:19,842 INFO L226 Difference]: Without dead ends: 13658 [2021-11-06 17:16:19,855 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 17:16:19,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13658 states. [2021-11-06 17:16:20,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13658 to 13644. [2021-11-06 17:16:20,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13644 states, 13635 states have (on average 1.340960762742941) internal successors, (18284), 13643 states have internal predecessors, (18284), 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 17:16:20,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13644 states to 13644 states and 18284 transitions. [2021-11-06 17:16:20,101 INFO L78 Accepts]: Start accepts. Automaton has 13644 states and 18284 transitions. Word has length 83 [2021-11-06 17:16:20,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:16:20,101 INFO L470 AbstractCegarLoop]: Abstraction has 13644 states and 18284 transitions. [2021-11-06 17:16:20,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 17:16:20,102 INFO L276 IsEmpty]: Start isEmpty. Operand 13644 states and 18284 transitions. [2021-11-06 17:16:20,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-06 17:16:20,107 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:16:20,107 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:16:20,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 17:16:20,108 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-06 17:16:20,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:16:20,108 INFO L85 PathProgramCache]: Analyzing trace with hash -545595546, now seen corresponding path program 1 times [2021-11-06 17:16:20,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:16:20,108 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104337068] [2021-11-06 17:16:20,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:16:20,109 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:16:20,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:16:20,190 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:16:20,191 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:16:20,191 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104337068] [2021-11-06 17:16:20,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104337068] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:16:20,191 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:16:20,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:16:20,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151588378] [2021-11-06 17:16:20,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:16:20,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:16:20,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:16:20,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:16:20,193 INFO L87 Difference]: Start difference. First operand 13644 states and 18284 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) 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) [2021-11-06 17:16:20,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:16:20,500 INFO L93 Difference]: Finished difference Result 27248 states and 36525 transitions. [2021-11-06 17:16:20,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:16:20,501 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) 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 [2021-11-06 17:16:20,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:16:20,525 INFO L225 Difference]: With dead ends: 27248 [2021-11-06 17:16:20,526 INFO L226 Difference]: Without dead ends: 13644 [2021-11-06 17:16:20,546 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 17:16:20,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13644 states. [2021-11-06 17:16:20,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13644 to 13644. [2021-11-06 17:16:20,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13644 states, 13635 states have (on average 1.3408140814081408) internal successors, (18282), 13643 states have internal predecessors, (18282), 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 17:16:20,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13644 states to 13644 states and 18282 transitions. [2021-11-06 17:16:20,780 INFO L78 Accepts]: Start accepts. Automaton has 13644 states and 18282 transitions. Word has length 101 [2021-11-06 17:16:20,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:16:20,780 INFO L470 AbstractCegarLoop]: Abstraction has 13644 states and 18282 transitions. [2021-11-06 17:16:20,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) 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) [2021-11-06 17:16:20,781 INFO L276 IsEmpty]: Start isEmpty. Operand 13644 states and 18282 transitions. [2021-11-06 17:16:20,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-06 17:16:20,787 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:16:20,787 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:16:20,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 17:16:20,787 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-06 17:16:20,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:16:20,788 INFO L85 PathProgramCache]: Analyzing trace with hash 378896821, now seen corresponding path program 1 times [2021-11-06 17:16:20,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:16:20,788 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42310220] [2021-11-06 17:16:20,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:16:20,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:16:20,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:16:20,902 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:16:20,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:16:20,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42310220] [2021-11-06 17:16:20,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42310220] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:16:20,903 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:16:20,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:16:20,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688670082] [2021-11-06 17:16:20,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:16:20,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:16:20,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:16:20,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:16:20,904 INFO L87 Difference]: Start difference. First operand 13644 states and 18282 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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 17:16:21,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:16:21,512 INFO L93 Difference]: Finished difference Result 33157 states and 44532 transitions. [2021-11-06 17:16:21,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:16:21,512 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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 113 [2021-11-06 17:16:21,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:16:21,550 INFO L225 Difference]: With dead ends: 33157 [2021-11-06 17:16:21,550 INFO L226 Difference]: Without dead ends: 19553 [2021-11-06 17:16:21,573 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 17:16:21,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19553 states. [2021-11-06 17:16:21,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19553 to 19539. [2021-11-06 17:16:22,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19539 states, 19530 states have (on average 1.3441372247823862) internal successors, (26251), 19538 states have internal predecessors, (26251), 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 17:16:22,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19539 states to 19539 states and 26251 transitions. [2021-11-06 17:16:22,054 INFO L78 Accepts]: Start accepts. Automaton has 19539 states and 26251 transitions. Word has length 113 [2021-11-06 17:16:22,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:16:22,054 INFO L470 AbstractCegarLoop]: Abstraction has 19539 states and 26251 transitions. [2021-11-06 17:16:22,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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 17:16:22,054 INFO L276 IsEmpty]: Start isEmpty. Operand 19539 states and 26251 transitions. [2021-11-06 17:16:22,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-06 17:16:22,062 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:16:22,063 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:16:22,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 17:16:22,063 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-06 17:16:22,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:16:22,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1406290303, now seen corresponding path program 1 times [2021-11-06 17:16:22,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:16:22,064 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028817134] [2021-11-06 17:16:22,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:16:22,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:16:22,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:16:22,173 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-06 17:16:22,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:16:22,173 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028817134] [2021-11-06 17:16:22,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028817134] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:16:22,174 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:16:22,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:16:22,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991474573] [2021-11-06 17:16:22,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:16:22,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:16:22,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:16:22,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:16:22,179 INFO L87 Difference]: Start difference. First operand 19539 states and 26251 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 17:16:22,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:16:22,906 INFO L93 Difference]: Finished difference Result 44945 states and 60466 transitions. [2021-11-06 17:16:22,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:16:22,907 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 125 [2021-11-06 17:16:22,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:16:22,957 INFO L225 Difference]: With dead ends: 44945 [2021-11-06 17:16:22,957 INFO L226 Difference]: Without dead ends: 25446 [2021-11-06 17:16:22,985 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 17:16:23,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25446 states. [2021-11-06 17:16:23,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25446 to 25432. [2021-11-06 17:16:23,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25432 states, 25423 states have (on average 1.3460252527239114) internal successors, (34220), 25431 states have internal predecessors, (34220), 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 17:16:23,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25432 states to 25432 states and 34220 transitions. [2021-11-06 17:16:23,565 INFO L78 Accepts]: Start accepts. Automaton has 25432 states and 34220 transitions. Word has length 125 [2021-11-06 17:16:23,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:16:23,565 INFO L470 AbstractCegarLoop]: Abstraction has 25432 states and 34220 transitions. [2021-11-06 17:16:23,566 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 17:16:23,566 INFO L276 IsEmpty]: Start isEmpty. Operand 25432 states and 34220 transitions. [2021-11-06 17:16:23,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-06 17:16:23,577 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:16:23,578 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:16:23,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 17:16:23,578 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-06 17:16:23,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:16:23,579 INFO L85 PathProgramCache]: Analyzing trace with hash 140030528, now seen corresponding path program 1 times [2021-11-06 17:16:23,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:16:23,579 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249474578] [2021-11-06 17:16:23,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:16:23,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:16:23,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:16:23,698 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-06 17:16:23,699 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:16:23,701 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249474578] [2021-11-06 17:16:23,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249474578] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:16:23,701 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:16:23,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:16:23,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970979695] [2021-11-06 17:16:23,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:16:23,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:16:23,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:16:23,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:16:23,703 INFO L87 Difference]: Start difference. First operand 25432 states and 34220 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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 17:16:24,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:16:24,393 INFO L93 Difference]: Finished difference Result 76112 states and 102458 transitions. [2021-11-06 17:16:24,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:16:24,394 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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 143 [2021-11-06 17:16:24,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:16:24,502 INFO L225 Difference]: With dead ends: 76112 [2021-11-06 17:16:24,502 INFO L226 Difference]: Without dead ends: 50720 [2021-11-06 17:16:24,556 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 17:16:24,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50720 states. [2021-11-06 17:16:25,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50720 to 25434. [2021-11-06 17:16:25,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25434 states, 25425 states have (on average 1.3459980334316617) internal successors, (34222), 25433 states have internal predecessors, (34222), 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 17:16:25,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25434 states to 25434 states and 34222 transitions. [2021-11-06 17:16:25,291 INFO L78 Accepts]: Start accepts. Automaton has 25434 states and 34222 transitions. Word has length 143 [2021-11-06 17:16:25,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:16:25,291 INFO L470 AbstractCegarLoop]: Abstraction has 25434 states and 34222 transitions. [2021-11-06 17:16:25,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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 17:16:25,291 INFO L276 IsEmpty]: Start isEmpty. Operand 25434 states and 34222 transitions. [2021-11-06 17:16:25,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-06 17:16:25,302 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:16:25,302 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:16:25,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 17:16:25,302 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-06 17:16:25,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:16:25,303 INFO L85 PathProgramCache]: Analyzing trace with hash -213057854, now seen corresponding path program 1 times [2021-11-06 17:16:25,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:16:25,303 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002498182] [2021-11-06 17:16:25,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:16:25,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:16:25,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:16:25,400 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-06 17:16:25,400 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:16:25,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002498182] [2021-11-06 17:16:25,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002498182] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:16:25,400 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:16:25,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:16:25,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743549714] [2021-11-06 17:16:25,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:16:25,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:16:25,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:16:25,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:16:25,402 INFO L87 Difference]: Start difference. First operand 25434 states and 34222 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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 17:16:26,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:16:26,304 INFO L93 Difference]: Finished difference Result 56733 states and 76404 transitions. [2021-11-06 17:16:26,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:16:26,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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 143 [2021-11-06 17:16:26,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:16:26,356 INFO L225 Difference]: With dead ends: 56733 [2021-11-06 17:16:26,356 INFO L226 Difference]: Without dead ends: 31339 [2021-11-06 17:16:26,387 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 17:16:26,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31339 states. [2021-11-06 17:16:27,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31339 to 31325. [2021-11-06 17:16:27,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31325 states, 31316 states have (on average 1.3471388427640822) internal successors, (42187), 31324 states have internal predecessors, (42187), 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 17:16:27,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31325 states to 31325 states and 42187 transitions. [2021-11-06 17:16:27,088 INFO L78 Accepts]: Start accepts. Automaton has 31325 states and 42187 transitions. Word has length 143 [2021-11-06 17:16:27,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:16:27,089 INFO L470 AbstractCegarLoop]: Abstraction has 31325 states and 42187 transitions. [2021-11-06 17:16:27,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 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 17:16:27,089 INFO L276 IsEmpty]: Start isEmpty. Operand 31325 states and 42187 transitions. [2021-11-06 17:16:27,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-06 17:16:27,101 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:16:27,101 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:16:27,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 17:16:27,102 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-06 17:16:27,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:16:27,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1932458536, now seen corresponding path program 1 times [2021-11-06 17:16:27,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:16:27,102 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666931642] [2021-11-06 17:16:27,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:16:27,103 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:16:27,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:16:27,214 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-06 17:16:27,214 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:16:27,215 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666931642] [2021-11-06 17:16:27,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666931642] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:16:27,216 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:16:27,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:16:27,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198947068] [2021-11-06 17:16:27,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:16:27,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:16:27,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:16:27,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:16:27,218 INFO L87 Difference]: Start difference. First operand 31325 states and 42187 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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 17:16:28,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:16:28,128 INFO L93 Difference]: Finished difference Result 64168 states and 86381 transitions. [2021-11-06 17:16:28,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:16:28,129 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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 144 [2021-11-06 17:16:28,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:16:28,176 INFO L225 Difference]: With dead ends: 64168 [2021-11-06 17:16:28,177 INFO L226 Difference]: Without dead ends: 32883 [2021-11-06 17:16:28,215 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 17:16:28,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32883 states. [2021-11-06 17:16:28,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32883 to 31407. [2021-11-06 17:16:28,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31407 states, 31398 states have (on average 1.3462322440919803) internal successors, (42269), 31406 states have internal predecessors, (42269), 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 17:16:28,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31407 states to 31407 states and 42269 transitions. [2021-11-06 17:16:28,929 INFO L78 Accepts]: Start accepts. Automaton has 31407 states and 42269 transitions. Word has length 144 [2021-11-06 17:16:28,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:16:28,929 INFO L470 AbstractCegarLoop]: Abstraction has 31407 states and 42269 transitions. [2021-11-06 17:16:28,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 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 17:16:28,930 INFO L276 IsEmpty]: Start isEmpty. Operand 31407 states and 42269 transitions. [2021-11-06 17:16:28,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-11-06 17:16:28,944 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:16:28,945 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:16:28,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 17:16:28,945 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-06 17:16:28,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:16:28,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1195307448, now seen corresponding path program 1 times [2021-11-06 17:16:28,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:16:28,946 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275794419] [2021-11-06 17:16:28,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:16:28,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:16:29,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:16:29,074 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-06 17:16:29,075 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:16:29,075 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275794419] [2021-11-06 17:16:29,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275794419] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 17:16:29,075 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916406945] [2021-11-06 17:16:29,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:16:29,076 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 17:16:29,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 17:16:29,077 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 17:16:29,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-06 17:16:29,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:16:29,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 2600 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 17:16:29,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 17:16:30,239 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-06 17:16:30,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916406945] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 17:16:30,239 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 17:16:30,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-11-06 17:16:30,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153805776] [2021-11-06 17:16:30,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 17:16:30,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:16:30,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 17:16:30,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-06 17:16:30,241 INFO L87 Difference]: Start difference. First operand 31407 states and 42269 transitions. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 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 17:16:31,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:16:31,332 INFO L93 Difference]: Finished difference Result 65808 states and 88431 transitions. [2021-11-06 17:16:31,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 17:16:31,333 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 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 152 [2021-11-06 17:16:31,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:16:31,379 INFO L225 Difference]: With dead ends: 65808 [2021-11-06 17:16:31,379 INFO L226 Difference]: Without dead ends: 34441 [2021-11-06 17:16:31,413 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-06 17:16:31,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34441 states. [2021-11-06 17:16:32,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34441 to 32965. [2021-11-06 17:16:32,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32965 states, 32956 states have (on average 1.342304891370312) internal successors, (44237), 32964 states have internal predecessors, (44237), 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 17:16:32,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32965 states to 32965 states and 44237 transitions. [2021-11-06 17:16:32,143 INFO L78 Accepts]: Start accepts. Automaton has 32965 states and 44237 transitions. Word has length 152 [2021-11-06 17:16:32,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:16:32,144 INFO L470 AbstractCegarLoop]: Abstraction has 32965 states and 44237 transitions. [2021-11-06 17:16:32,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 5 states have internal predecessors, (141), 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 17:16:32,144 INFO L276 IsEmpty]: Start isEmpty. Operand 32965 states and 44237 transitions. [2021-11-06 17:16:32,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-06 17:16:32,156 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:16:32,157 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:16:32,178 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-06 17:16:32,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-06 17:16:32,372 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-06 17:16:32,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:16:32,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1555693623, now seen corresponding path program 1 times [2021-11-06 17:16:32,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:16:32,372 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172770228] [2021-11-06 17:16:32,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:16:32,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:16:32,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:16:32,612 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-06 17:16:32,612 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:16:32,613 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172770228] [2021-11-06 17:16:32,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172770228] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:16:32,613 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:16:32,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 17:16:32,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575277180] [2021-11-06 17:16:32,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 17:16:32,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:16:32,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 17:16:32,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-06 17:16:32,614 INFO L87 Difference]: Start difference. First operand 32965 states and 44237 transitions. Second operand has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 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 17:16:37,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:16:37,593 INFO L93 Difference]: Finished difference Result 213786 states and 287959 transitions. [2021-11-06 17:16:37,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-06 17:16:37,594 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 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 154 [2021-11-06 17:16:37,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:16:38,040 INFO L225 Difference]: With dead ends: 213786 [2021-11-06 17:16:38,042 INFO L226 Difference]: Without dead ends: 180861 [2021-11-06 17:16:38,207 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-06 17:16:38,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180861 states. [2021-11-06 17:16:40,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180861 to 33109. [2021-11-06 17:16:40,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33109 states, 33100 states have (on average 1.3408157099697886) internal successors, (44381), 33108 states have internal predecessors, (44381), 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 17:16:40,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33109 states to 33109 states and 44381 transitions. [2021-11-06 17:16:40,476 INFO L78 Accepts]: Start accepts. Automaton has 33109 states and 44381 transitions. Word has length 154 [2021-11-06 17:16:40,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:16:40,477 INFO L470 AbstractCegarLoop]: Abstraction has 33109 states and 44381 transitions. [2021-11-06 17:16:40,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 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 17:16:40,477 INFO L276 IsEmpty]: Start isEmpty. Operand 33109 states and 44381 transitions. [2021-11-06 17:16:40,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-06 17:16:40,488 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:16:40,489 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 17:16:40,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-06 17:16:40,489 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-06 17:16:40,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:16:40,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1317006267, now seen corresponding path program 1 times [2021-11-06 17:16:40,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:16:40,490 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69547480] [2021-11-06 17:16:40,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:16:40,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:16:40,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:16:40,652 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-06 17:16:40,652 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:16:40,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69547480] [2021-11-06 17:16:40,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69547480] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:16:40,653 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:16:40,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 17:16:40,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805096270] [2021-11-06 17:16:40,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 17:16:40,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:16:40,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 17:16:40,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-06 17:16:40,654 INFO L87 Difference]: Start difference. First operand 33109 states and 44381 transitions. Second operand has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 6 states have internal predecessors, (140), 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)