./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-08_1a-drivers--iio--imu--inv_mpu6050--inv-mpu6050.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-08_1a-drivers--iio--imu--inv_mpu6050--inv-mpu6050.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 e6c477e3f3753c58922818522be04156e728e59c50f004b5ce835b763e4b3e35 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 15:42:21,570 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 15:42:21,571 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 15:42:21,606 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 15:42:21,607 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 15:42:21,610 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 15:42:21,611 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 15:42:21,617 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 15:42:21,619 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 15:42:21,624 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 15:42:21,624 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 15:42:21,626 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 15:42:21,626 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 15:42:21,628 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 15:42:21,630 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 15:42:21,632 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 15:42:21,635 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 15:42:21,636 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 15:42:21,637 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 15:42:21,640 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 15:42:21,643 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 15:42:21,647 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 15:42:21,648 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 15:42:21,649 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 15:42:21,651 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 15:42:21,654 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 15:42:21,654 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 15:42:21,655 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 15:42:21,656 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 15:42:21,657 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 15:42:21,657 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 15:42:21,658 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 15:42:21,659 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 15:42:21,660 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 15:42:21,661 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 15:42:21,661 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 15:42:21,662 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 15:42:21,662 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 15:42:21,662 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 15:42:21,663 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 15:42:21,664 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 15:42:21,664 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 15:42:21,685 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 15:42:21,687 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 15:42:21,688 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 15:42:21,688 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 15:42:21,689 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 15:42:21,690 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 15:42:21,690 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 15:42:21,690 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 15:42:21,690 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 15:42:21,690 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 15:42:21,691 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 15:42:21,691 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 15:42:21,692 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 15:42:21,692 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 15:42:21,692 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 15:42:21,692 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 15:42:21,692 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 15:42:21,693 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 15:42:21,693 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 15:42:21,693 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 15:42:21,693 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 15:42:21,693 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 15:42:21,693 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 15:42:21,694 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 15:42:21,694 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 15:42:21,694 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 15:42:21,694 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 15:42:21,695 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 15:42:21,695 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 15:42:21,696 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e6c477e3f3753c58922818522be04156e728e59c50f004b5ce835b763e4b3e35 [2021-11-06 15:42:21,889 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 15:42:21,905 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 15:42:21,907 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 15:42:21,908 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 15:42:21,909 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 15:42:21,909 INFO L432 ainManager$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-08_1a-drivers--iio--imu--inv_mpu6050--inv-mpu6050.ko-entry_point.cil.out.i [2021-11-06 15:42:21,958 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1dc6a3e67/f1ee9f04ed5b435cbb5f33f78113d55a/FLAG7e825d608 [2021-11-06 15:42:22,567 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 15:42:22,568 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--iio--imu--inv_mpu6050--inv-mpu6050.ko-entry_point.cil.out.i [2021-11-06 15:42:22,611 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1dc6a3e67/f1ee9f04ed5b435cbb5f33f78113d55a/FLAG7e825d608 [2021-11-06 15:42:22,710 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1dc6a3e67/f1ee9f04ed5b435cbb5f33f78113d55a [2021-11-06 15:42:22,713 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 15:42:22,714 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 15:42:22,716 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 15:42:22,717 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 15:42:22,720 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 15:42:22,721 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 03:42:22" (1/1) ... [2021-11-06 15:42:22,722 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7067cca5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:42:22, skipping insertion in model container [2021-11-06 15:42:22,723 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 03:42:22" (1/1) ... [2021-11-06 15:42:22,728 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 15:42:22,821 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 15:42:23,988 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-08_1a-drivers--iio--imu--inv_mpu6050--inv-mpu6050.ko-entry_point.cil.out.i[208384,208397] [2021-11-06 15:42:24,039 WARN L612 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-11-06 15:42:24,052 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 15:42:24,101 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 15:42:24,332 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-08_1a-drivers--iio--imu--inv_mpu6050--inv-mpu6050.ko-entry_point.cil.out.i[208384,208397] [2021-11-06 15:42:24,337 WARN L612 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-11-06 15:42:24,339 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 15:42:24,437 INFO L208 MainTranslator]: Completed translation [2021-11-06 15:42:24,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:42:24 WrapperNode [2021-11-06 15:42:24,439 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 15:42:24,440 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 15:42:24,440 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 15:42:24,440 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 15:42:24,447 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:42:24" (1/1) ... [2021-11-06 15:42:24,506 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:42:24" (1/1) ... [2021-11-06 15:42:24,842 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 15:42:24,843 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 15:42:24,843 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 15:42:24,843 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 15:42:24,851 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:42:24" (1/1) ... [2021-11-06 15:42:24,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:42:24" (1/1) ... [2021-11-06 15:42:24,904 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:42:24" (1/1) ... [2021-11-06 15:42:24,904 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:42:24" (1/1) ... [2021-11-06 15:42:25,132 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:42:24" (1/1) ... [2021-11-06 15:42:25,185 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:42:24" (1/1) ... [2021-11-06 15:42:25,217 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:42:24" (1/1) ... [2021-11-06 15:42:25,265 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 15:42:25,267 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 15:42:25,267 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 15:42:25,267 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 15:42:25,268 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:42:24" (1/1) ... [2021-11-06 15:42:25,278 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 15:42:25,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:42:25,300 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 15:42:25,323 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 15:42:25,337 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 15:42:25,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 15:42:25,339 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 15:42:25,339 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 15:42:25,339 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-11-06 15:42:25,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 15:42:25,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 15:42:25,339 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 15:42:25,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 15:42:25,340 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 15:42:25,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 15:42:25,340 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 15:42:25,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 15:42:25,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 15:42:25,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 15:42:25,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 15:43:01,543 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 15:43:01,544 INFO L299 CfgBuilder]: Removed 1941 assume(true) statements. [2021-11-06 15:43:01,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 03:43:01 BoogieIcfgContainer [2021-11-06 15:43:01,547 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 15:43:01,549 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 15:43:01,549 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 15:43:01,551 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 15:43:01,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 03:42:22" (1/3) ... [2021-11-06 15:43:01,552 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11b9fe7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 03:43:01, skipping insertion in model container [2021-11-06 15:43:01,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:42:24" (2/3) ... [2021-11-06 15:43:01,553 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11b9fe7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 03:43:01, skipping insertion in model container [2021-11-06 15:43:01,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 03:43:01" (3/3) ... [2021-11-06 15:43:01,554 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--iio--imu--inv_mpu6050--inv-mpu6050.ko-entry_point.cil.out.i [2021-11-06 15:43:01,558 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 15:43:01,558 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-06 15:43:01,601 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 15:43:01,605 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 15:43:01,605 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-06 15:43:01,642 INFO L276 IsEmpty]: Start isEmpty. Operand has 1970 states, 1968 states have (on average 1.416158536585366) internal successors, (2787), 1969 states have internal predecessors, (2787), 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 15:43:01,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-06 15:43:01,655 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:43:01,655 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:43:01,656 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 15:43:01,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:43:01,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1900913398, now seen corresponding path program 1 times [2021-11-06 15:43:01,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:43:01,668 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708398263] [2021-11-06 15:43:01,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:43:01,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:43:02,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:43:02,348 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 15:43:02,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:43:02,349 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708398263] [2021-11-06 15:43:02,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708398263] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:43:02,350 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:43:02,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 15:43:02,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786817511] [2021-11-06 15:43:02,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 15:43:02,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:43:02,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 15:43:02,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 15:43:02,371 INFO L87 Difference]: Start difference. First operand has 1970 states, 1968 states have (on average 1.416158536585366) internal successors, (2787), 1969 states have internal predecessors, (2787), 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 47.0) internal successors, (94), 2 states have internal predecessors, (94), 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 15:43:02,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:43:02,474 INFO L93 Difference]: Finished difference Result 3936 states and 5569 transitions. [2021-11-06 15:43:02,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 15:43:02,476 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 47.0) internal successors, (94), 2 states have internal predecessors, (94), 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 94 [2021-11-06 15:43:02,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:43:02,495 INFO L225 Difference]: With dead ends: 3936 [2021-11-06 15:43:02,495 INFO L226 Difference]: Without dead ends: 1956 [2021-11-06 15:43:02,502 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 15:43:02,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1956 states. [2021-11-06 15:43:02,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1956 to 1956. [2021-11-06 15:43:02,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1956 states, 1955 states have (on average 1.3989769820971867) internal successors, (2735), 1955 states have internal predecessors, (2735), 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 15:43:02,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1956 states to 1956 states and 2735 transitions. [2021-11-06 15:43:02,607 INFO L78 Accepts]: Start accepts. Automaton has 1956 states and 2735 transitions. Word has length 94 [2021-11-06 15:43:02,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:43:02,607 INFO L470 AbstractCegarLoop]: Abstraction has 1956 states and 2735 transitions. [2021-11-06 15:43:02,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 47.0) internal successors, (94), 2 states have internal predecessors, (94), 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 15:43:02,608 INFO L276 IsEmpty]: Start isEmpty. Operand 1956 states and 2735 transitions. [2021-11-06 15:43:02,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-06 15:43:02,616 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:43:02,616 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:43:02,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 15:43:02,617 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 15:43:02,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:43:02,620 INFO L85 PathProgramCache]: Analyzing trace with hash 753017488, now seen corresponding path program 1 times [2021-11-06 15:43:02,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:43:02,621 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308433068] [2021-11-06 15:43:02,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:43:02,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:43:02,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:43:02,951 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 15:43:02,951 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:43:02,951 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308433068] [2021-11-06 15:43:02,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308433068] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:43:02,952 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:43:02,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 15:43:02,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2536013] [2021-11-06 15:43:02,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:43:02,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:43:02,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:43:02,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:43:02,956 INFO L87 Difference]: Start difference. First operand 1956 states and 2735 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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 15:43:05,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:43:05,293 INFO L93 Difference]: Finished difference Result 5678 states and 8005 transitions. [2021-11-06 15:43:05,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:43:05,294 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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 94 [2021-11-06 15:43:05,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:43:05,315 INFO L225 Difference]: With dead ends: 5678 [2021-11-06 15:43:05,315 INFO L226 Difference]: Without dead ends: 3800 [2021-11-06 15:43:05,321 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 15:43:05,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3800 states. [2021-11-06 15:43:05,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3800 to 3800. [2021-11-06 15:43:05,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3800 states, 3799 states have (on average 1.4082653329823638) internal successors, (5350), 3799 states have internal predecessors, (5350), 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 15:43:05,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3800 states to 3800 states and 5350 transitions. [2021-11-06 15:43:05,411 INFO L78 Accepts]: Start accepts. Automaton has 3800 states and 5350 transitions. Word has length 94 [2021-11-06 15:43:05,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:43:05,413 INFO L470 AbstractCegarLoop]: Abstraction has 3800 states and 5350 transitions. [2021-11-06 15:43:05,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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 15:43:05,413 INFO L276 IsEmpty]: Start isEmpty. Operand 3800 states and 5350 transitions. [2021-11-06 15:43:05,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-06 15:43:05,416 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:43:05,417 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:43:05,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 15:43:05,419 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 15:43:05,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:43:05,427 INFO L85 PathProgramCache]: Analyzing trace with hash -493821856, now seen corresponding path program 1 times [2021-11-06 15:43:05,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:43:05,428 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175545761] [2021-11-06 15:43:05,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:43:05,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:43:05,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:43:05,745 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 15:43:05,748 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:43:05,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175545761] [2021-11-06 15:43:05,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175545761] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:43:05,749 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:43:05,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 15:43:05,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710966] [2021-11-06 15:43:05,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:43:05,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:43:05,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:43:05,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:43:05,750 INFO L87 Difference]: Start difference. First operand 3800 states and 5350 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 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 15:43:05,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:43:05,882 INFO L93 Difference]: Finished difference Result 7522 states and 10617 transitions. [2021-11-06 15:43:05,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:43:05,883 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 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 98 [2021-11-06 15:43:05,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:43:05,919 INFO L225 Difference]: With dead ends: 7522 [2021-11-06 15:43:05,919 INFO L226 Difference]: Without dead ends: 7518 [2021-11-06 15:43:05,925 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:43:05,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7518 states. [2021-11-06 15:43:06,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7518 to 7518. [2021-11-06 15:43:06,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7518 states, 7517 states have (on average 1.411600372489025) internal successors, (10611), 7517 states have internal predecessors, (10611), 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 15:43:06,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7518 states to 7518 states and 10611 transitions. [2021-11-06 15:43:06,210 INFO L78 Accepts]: Start accepts. Automaton has 7518 states and 10611 transitions. Word has length 98 [2021-11-06 15:43:06,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:43:06,211 INFO L470 AbstractCegarLoop]: Abstraction has 7518 states and 10611 transitions. [2021-11-06 15:43:06,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 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 15:43:06,212 INFO L276 IsEmpty]: Start isEmpty. Operand 7518 states and 10611 transitions. [2021-11-06 15:43:06,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-06 15:43:06,221 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:43:06,221 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:43:06,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 15:43:06,221 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 15:43:06,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:43:06,222 INFO L85 PathProgramCache]: Analyzing trace with hash 645158019, now seen corresponding path program 1 times [2021-11-06 15:43:06,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:43:06,223 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135181778] [2021-11-06 15:43:06,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:43:06,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:43:06,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:43:06,447 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:43:06,448 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:43:06,448 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135181778] [2021-11-06 15:43:06,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135181778] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:43:06,448 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:43:06,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 15:43:06,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910855605] [2021-11-06 15:43:06,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:43:06,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:43:06,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:43:06,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:43:06,450 INFO L87 Difference]: Start difference. First operand 7518 states and 10611 transitions. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 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 15:43:06,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:43:06,779 INFO L93 Difference]: Finished difference Result 21152 states and 29896 transitions. [2021-11-06 15:43:06,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:43:06,779 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 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 167 [2021-11-06 15:43:06,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:43:06,835 INFO L225 Difference]: With dead ends: 21152 [2021-11-06 15:43:06,835 INFO L226 Difference]: Without dead ends: 13712 [2021-11-06 15:43:06,852 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 15:43:06,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13712 states. [2021-11-06 15:43:07,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13712 to 13698. [2021-11-06 15:43:07,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13698 states, 13697 states have (on average 1.412791122143535) internal successors, (19351), 13697 states have internal predecessors, (19351), 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 15:43:07,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13698 states to 13698 states and 19351 transitions. [2021-11-06 15:43:07,218 INFO L78 Accepts]: Start accepts. Automaton has 13698 states and 19351 transitions. Word has length 167 [2021-11-06 15:43:07,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:43:07,220 INFO L470 AbstractCegarLoop]: Abstraction has 13698 states and 19351 transitions. [2021-11-06 15:43:07,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 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 15:43:07,221 INFO L276 IsEmpty]: Start isEmpty. Operand 13698 states and 19351 transitions. [2021-11-06 15:43:07,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2021-11-06 15:43:07,241 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:43:07,241 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:43:07,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 15:43:07,241 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 15:43:07,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:43:07,243 INFO L85 PathProgramCache]: Analyzing trace with hash -256455826, now seen corresponding path program 1 times [2021-11-06 15:43:07,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:43:07,243 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008019993] [2021-11-06 15:43:07,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:43:07,243 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:43:07,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:43:07,587 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-06 15:43:07,588 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:43:07,588 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008019993] [2021-11-06 15:43:07,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008019993] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:43:07,589 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:43:07,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 15:43:07,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973493127] [2021-11-06 15:43:07,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:43:07,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:43:07,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:43:07,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:43:07,591 INFO L87 Difference]: Start difference. First operand 13698 states and 19351 transitions. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:43:08,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:43:08,434 INFO L93 Difference]: Finished difference Result 39786 states and 56223 transitions. [2021-11-06 15:43:08,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:43:08,434 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 208 [2021-11-06 15:43:08,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:43:08,511 INFO L225 Difference]: With dead ends: 39786 [2021-11-06 15:43:08,511 INFO L226 Difference]: Without dead ends: 26166 [2021-11-06 15:43:08,546 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 15:43:08,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26166 states. [2021-11-06 15:43:09,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26166 to 13954. [2021-11-06 15:43:09,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13954 states, 13953 states have (on average 1.4052175159463915) internal successors, (19607), 13953 states have internal predecessors, (19607), 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 15:43:09,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13954 states to 13954 states and 19607 transitions. [2021-11-06 15:43:09,178 INFO L78 Accepts]: Start accepts. Automaton has 13954 states and 19607 transitions. Word has length 208 [2021-11-06 15:43:09,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:43:09,178 INFO L470 AbstractCegarLoop]: Abstraction has 13954 states and 19607 transitions. [2021-11-06 15:43:09,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:43:09,179 INFO L276 IsEmpty]: Start isEmpty. Operand 13954 states and 19607 transitions. [2021-11-06 15:43:09,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-11-06 15:43:09,195 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:43:09,196 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:43:09,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 15:43:09,196 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 15:43:09,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:43:09,198 INFO L85 PathProgramCache]: Analyzing trace with hash 958334802, now seen corresponding path program 1 times [2021-11-06 15:43:09,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:43:09,201 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405015500] [2021-11-06 15:43:09,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:43:09,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:43:09,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:43:09,580 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-06 15:43:09,580 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:43:09,580 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405015500] [2021-11-06 15:43:09,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405015500] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:43:09,580 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:43:09,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 15:43:09,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699183699] [2021-11-06 15:43:09,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 15:43:09,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:43:09,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 15:43:09,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 15:43:09,582 INFO L87 Difference]: Start difference. First operand 13954 states and 19607 transitions. Second operand has 4 states, 4 states have (on average 50.5) internal successors, (202), 4 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:43:11,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:43:11,245 INFO L93 Difference]: Finished difference Result 65322 states and 91703 transitions. [2021-11-06 15:43:11,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 15:43:11,245 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.5) internal successors, (202), 4 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 210 [2021-11-06 15:43:11,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:43:11,396 INFO L225 Difference]: With dead ends: 65322 [2021-11-06 15:43:11,397 INFO L226 Difference]: Without dead ends: 51446 [2021-11-06 15:43:11,441 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 15:43:11,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51446 states. [2021-11-06 15:43:12,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51446 to 13962. [2021-11-06 15:43:12,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13962 states, 13961 states have (on average 1.4049853162380919) internal successors, (19615), 13961 states have internal predecessors, (19615), 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 15:43:12,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13962 states to 13962 states and 19615 transitions. [2021-11-06 15:43:12,349 INFO L78 Accepts]: Start accepts. Automaton has 13962 states and 19615 transitions. Word has length 210 [2021-11-06 15:43:12,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:43:12,350 INFO L470 AbstractCegarLoop]: Abstraction has 13962 states and 19615 transitions. [2021-11-06 15:43:12,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.5) internal successors, (202), 4 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:43:12,351 INFO L276 IsEmpty]: Start isEmpty. Operand 13962 states and 19615 transitions. [2021-11-06 15:43:12,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-11-06 15:43:12,368 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:43:12,368 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:43:12,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 15:43:12,369 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 15:43:12,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:43:12,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1564351022, now seen corresponding path program 1 times [2021-11-06 15:43:12,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:43:12,370 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723909085] [2021-11-06 15:43:12,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:43:12,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:43:12,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:43:12,685 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-06 15:43:12,686 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:43:12,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723909085] [2021-11-06 15:43:12,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723909085] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:43:12,686 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:43:12,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 15:43:12,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829778283] [2021-11-06 15:43:12,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 15:43:12,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:43:12,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 15:43:12,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 15:43:12,688 INFO L87 Difference]: Start difference. First operand 13962 states and 19615 transitions. Second operand has 4 states, 4 states have (on average 50.5) internal successors, (202), 4 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:43:14,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:43:14,228 INFO L93 Difference]: Finished difference Result 67186 states and 94475 transitions. [2021-11-06 15:43:14,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 15:43:14,229 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.5) internal successors, (202), 4 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 210 [2021-11-06 15:43:14,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:43:14,358 INFO L225 Difference]: With dead ends: 67186 [2021-11-06 15:43:14,358 INFO L226 Difference]: Without dead ends: 53302 [2021-11-06 15:43:14,397 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 15:43:14,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53302 states. [2021-11-06 15:43:15,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53302 to 13970. [2021-11-06 15:43:15,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13970 states, 13969 states have (on average 1.4047533824897989) internal successors, (19623), 13969 states have internal predecessors, (19623), 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 15:43:15,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13970 states to 13970 states and 19623 transitions. [2021-11-06 15:43:15,286 INFO L78 Accepts]: Start accepts. Automaton has 13970 states and 19623 transitions. Word has length 210 [2021-11-06 15:43:15,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:43:15,287 INFO L470 AbstractCegarLoop]: Abstraction has 13970 states and 19623 transitions. [2021-11-06 15:43:15,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.5) internal successors, (202), 4 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:43:15,287 INFO L276 IsEmpty]: Start isEmpty. Operand 13970 states and 19623 transitions. [2021-11-06 15:43:15,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2021-11-06 15:43:15,303 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:43:15,303 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:43:15,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 15:43:15,304 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 15:43:15,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:43:15,305 INFO L85 PathProgramCache]: Analyzing trace with hash 770784155, now seen corresponding path program 1 times [2021-11-06 15:43:15,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:43:15,305 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087079800] [2021-11-06 15:43:15,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:43:15,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:43:15,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:43:15,654 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-06 15:43:15,655 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:43:15,655 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087079800] [2021-11-06 15:43:15,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087079800] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:43:15,656 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:43:15,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 15:43:15,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484410320] [2021-11-06 15:43:15,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:43:15,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:43:15,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:43:15,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:43:15,659 INFO L87 Difference]: Start difference. First operand 13970 states and 19623 transitions. Second operand has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 2 states have internal predecessors, (208), 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 15:43:16,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:43:16,626 INFO L93 Difference]: Finished difference Result 41718 states and 58631 transitions. [2021-11-06 15:43:16,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:43:16,627 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 2 states have internal predecessors, (208), 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 216 [2021-11-06 15:43:16,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:43:16,694 INFO L225 Difference]: With dead ends: 41718 [2021-11-06 15:43:16,695 INFO L226 Difference]: Without dead ends: 27826 [2021-11-06 15:43:16,731 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:43:16,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27826 states. [2021-11-06 15:43:17,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27826 to 24654. [2021-11-06 15:43:17,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24654 states, 24653 states have (on average 1.4133776822293433) internal successors, (34844), 24653 states have internal predecessors, (34844), 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 15:43:17,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24654 states to 24654 states and 34844 transitions. [2021-11-06 15:43:17,864 INFO L78 Accepts]: Start accepts. Automaton has 24654 states and 34844 transitions. Word has length 216 [2021-11-06 15:43:17,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:43:17,864 INFO L470 AbstractCegarLoop]: Abstraction has 24654 states and 34844 transitions. [2021-11-06 15:43:17,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 2 states have internal predecessors, (208), 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 15:43:17,865 INFO L276 IsEmpty]: Start isEmpty. Operand 24654 states and 34844 transitions. [2021-11-06 15:43:17,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-11-06 15:43:17,905 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:43:17,906 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:43:17,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 15:43:17,906 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 15:43:17,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:43:17,907 INFO L85 PathProgramCache]: Analyzing trace with hash -580959769, now seen corresponding path program 1 times [2021-11-06 15:43:17,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:43:17,907 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754938926] [2021-11-06 15:43:17,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:43:17,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:43:18,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:43:18,237 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-06 15:43:18,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:43:18,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754938926] [2021-11-06 15:43:18,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754938926] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:43:18,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441790357] [2021-11-06 15:43:18,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:43:18,238 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:43:18,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:43:18,240 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 15:43:18,241 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 15:43:19,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:43:19,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 4039 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 15:43:19,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 15:43:20,487 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-06 15:43:20,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [441790357] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:43:20,487 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 15:43:20,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2021-11-06 15:43:20,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99511554] [2021-11-06 15:43:20,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 15:43:20,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:43:20,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 15:43:20,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 15:43:20,489 INFO L87 Difference]: Start difference. First operand 24654 states and 34844 transitions. Second operand has 4 states, 4 states have (on average 52.25) internal successors, (209), 4 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:43:24,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:43:24,849 INFO L93 Difference]: Finished difference Result 73808 states and 104367 transitions. [2021-11-06 15:43:24,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 15:43:24,850 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.25) internal successors, (209), 4 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 217 [2021-11-06 15:43:24,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:43:24,997 INFO L225 Difference]: With dead ends: 73808 [2021-11-06 15:43:24,998 INFO L226 Difference]: Without dead ends: 73804 [2021-11-06 15:43:25,024 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 15:43:25,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73804 states. [2021-11-06 15:43:27,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73804 to 73594. [2021-11-06 15:43:27,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73594 states, 73593 states have (on average 1.4145367086543557) internal successors, (104100), 73593 states have internal predecessors, (104100), 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 15:43:27,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73594 states to 73594 states and 104100 transitions. [2021-11-06 15:43:27,637 INFO L78 Accepts]: Start accepts. Automaton has 73594 states and 104100 transitions. Word has length 217 [2021-11-06 15:43:27,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:43:27,638 INFO L470 AbstractCegarLoop]: Abstraction has 73594 states and 104100 transitions. [2021-11-06 15:43:27,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.25) internal successors, (209), 4 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:43:27,638 INFO L276 IsEmpty]: Start isEmpty. Operand 73594 states and 104100 transitions. [2021-11-06 15:43:27,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-11-06 15:43:27,728 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:43:27,729 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:43:27,768 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-06 15:43:27,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:43:27,944 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 15:43:27,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:43:27,944 INFO L85 PathProgramCache]: Analyzing trace with hash 2125659625, now seen corresponding path program 1 times [2021-11-06 15:43:27,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:43:27,944 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406555061] [2021-11-06 15:43:27,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:43:27,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:43:28,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:43:28,743 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-06 15:43:28,743 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:43:28,744 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406555061] [2021-11-06 15:43:28,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406555061] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:43:28,744 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:43:28,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 15:43:28,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294561650] [2021-11-06 15:43:28,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 15:43:28,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:43:28,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 15:43:28,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 15:43:28,745 INFO L87 Difference]: Start difference. First operand 73594 states and 104100 transitions. Second operand has 5 states, 5 states have (on average 41.8) internal successors, (209), 5 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:43:38,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:43:38,556 INFO L93 Difference]: Finished difference Result 350102 states and 495436 transitions. [2021-11-06 15:43:38,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 15:43:38,557 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 41.8) internal successors, (209), 5 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 217 [2021-11-06 15:43:38,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:43:39,418 INFO L225 Difference]: With dead ends: 350102 [2021-11-06 15:43:39,418 INFO L226 Difference]: Without dead ends: 276586 [2021-11-06 15:43:39,575 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-06 15:43:39,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276586 states. [2021-11-06 15:43:43,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276586 to 73666. [2021-11-06 15:43:44,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73666 states, 73665 states have (on average 1.414131541437589) internal successors, (104172), 73665 states have internal predecessors, (104172), 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 15:43:44,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73666 states to 73666 states and 104172 transitions. [2021-11-06 15:43:44,331 INFO L78 Accepts]: Start accepts. Automaton has 73666 states and 104172 transitions. Word has length 217 [2021-11-06 15:43:44,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:43:44,332 INFO L470 AbstractCegarLoop]: Abstraction has 73666 states and 104172 transitions. [2021-11-06 15:43:44,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.8) internal successors, (209), 5 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:43:44,332 INFO L276 IsEmpty]: Start isEmpty. Operand 73666 states and 104172 transitions. [2021-11-06 15:43:44,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2021-11-06 15:43:44,398 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:43:44,398 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:43:44,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-06 15:43:44,399 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 15:43:44,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:43:44,400 INFO L85 PathProgramCache]: Analyzing trace with hash -768494651, now seen corresponding path program 1 times [2021-11-06 15:43:44,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:43:44,400 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716419685] [2021-11-06 15:43:44,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:43:44,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:43:44,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:43:44,736 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-06 15:43:44,736 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:43:44,736 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716419685] [2021-11-06 15:43:44,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716419685] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:43:44,737 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:43:44,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 15:43:44,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165489388] [2021-11-06 15:43:44,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:43:44,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:43:44,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:43:44,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:43:44,739 INFO L87 Difference]: Start difference. First operand 73666 states and 104172 transitions. Second operand has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 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)